GB/T 15001-1994 General provisions for dimensions, shape, surface quality, test methods and inspection rules for soft magnetic alloys
Some standard content:
National Standard of the People's Republic of China
General rules af dimensions shape surface qualitytest metherd and inspection rules for soft magniticalloyGB/T 15001—94
Replaces GBn 197—88
This standard applies to the general provisions of dimensions, shape, surface quality, test methods and inspection rules for cold-rolled strips, hot-rolled (forged) flats and rolled products, as well as cold-drawn tubes and wires of soft alloys. 1 Dimensions and shapes
1.1 Cold-rolled strips
1.1.1 Dimensions
The dimensions and permissible deviations of cold-rolled strips shall comply with the provisions of Tables 1, 2 and 3. According to the requirements of the purchaser, for strips with a thickness greater than or equal to 0.35 mm, strips with a width of 300 mm to 450 mm can be supplied, and the thickness deviation is allowed to be relaxed compared with the provisions of Table 1. Table 1 Allowable deviation of cold-rolled strip size and thickness
2-0.001 3~0.002
0.092--0,003
>0.005 --0,01
2>01.01 ~ 0.04
>0.04~- 0.09
≥0.09--1.15
≥>0.15--0. 25
Thickness tolerance
±0.000 15
±0.000 2
±0.000 3
± 0.000 5
-- 0.003
National Technical Supervision Approval 1994-04-04 Width
101~100
20~250
Length, not less than
20 000
30 000
20:000
1994-05-01 Implementation
>0.25 ~ 0.40
≥>1.40~ 0. 70 | | tt | ~3. 00
GB/T 15001— 94
Continued Table 1
Thickness allowable deviation
80~300
Table 2 Untrimmed cold-rolled strip width allowable deviation100
>-100-150
Not more than
>150～250
Table 3 Trimmed cold-rolled strip width allowable deviationWidth
Allowable deviation
0. 06 ~ 0. 50
>0. 50 ~1. 00
1.1.2 Appearance
Not too dry
Length, not too dry
Cold-rolled strips should generally be delivered in coils or straight bars. They can also be delivered in coils after being welded from the same heat number, but the weld should be GB/T 15(001--94
shall be clearly marked.
Each batch is allowed to deliver short-length cold-rolled strips not exceeding 30% of the total weight of the batch, but the shortest length shall not be less than 30% of the length specified in Table 1.
1.1.2.2 Cold-rolled strips shall not have bends or obvious waves (the ratio of peak height to peak distance shall not be greater than 4%), and the insert bend shall not exceed 3mm per meter. However, strips with a thickness of 0.02mm or less shall not be allowed to be delivered in a free state. (Not tightened), undulating waves are allowed. 1.1.2.3 Cold-rolled strips should generally be delivered with trimmed edges. The edges of trimmed cold-rolled strips should not have cracks or burrs that exceed the thickness tolerance. The edges of untrimmed strips are allowed to have defects such as cracks, and their depth should not make the strip width less than the minimum allowable width. 1.2 Cold-drawn wires
1.2.1 Diameter
The diameter and allowable deviation of cold-drawn wires shall comply with the provisions of Table 4. Table
0. 05 ~ 0. 10
>0. 10 ~0. 30
>0. 30 ~ 0. 60
>0. 60~1. 0
>1. 0~3. 0
>3. 0 ~ 6. 0
1.2.2 Appearance
1.2.2.1 The ovality of cold-drawn wire shall not be greater than half of the straightness tolerance. 1.2.2.2 Cold-drawn wire shall be coiled neatly and shall not be scattered or "co\shaped" when the wire coil is unwound. 1.3 Drawn pipe
The appearance, size and allowable deviation of cold-drawn pipe shall be agreed upon by both parties. 1.4 Hot-rolled (forged) flat products and bars
1.4. 1. Size
Hot-rolled material dimensions and allowable deviations shall comply with the provisions of Table 5 1. 4. 1. 1
Table 5 Hot-rolled flat material dimensions Allowable deviation
3. 0 ~ 4. 0
>4. 0-7. 0
7. 0~13. 0
≥13. 0~/22. 0
Thickness allowable box difference
1.4. 1.2 Hot-rolled material dimensions and allowable deviations shall comply with the provisions of Table 6. Allowable deviation
20
Width allowable deviation
Length, not less than ten
GB/F 15001—94
Table 6 Dimensions and allowable deviations of hot-rolled wrought materials
>20~30
>80~50
>50--80
The dimensions and allowable deviations of hot-forged materials shall comply with the provisions of Equipment 7. 1. 4. 1. 3
Table? Dimensions and allowable deviations of hot-dip galvanized materials
Side length or weight
>12~35
>35~50
>50--80
>80100
1.4.2 Appearance
1. 4. 2. 1 Hot-rolled flat materials
Hot-rolled flat materials shall be straight, and the sickle bend shall not be greater than 4mm per meter. The difference between the diagonals of the hot-rolled flat materials in the same section shall not be greater than half of the width tolerance. 1.4.2.2 Hot-rolled (forged) bars
Hot-rolled (forged) bars shall generally be delivered in straight bars, but bars with a diameter less than 12 mm may be delivered in coils. Allowable tolerance
Allowable deviation
±2, 0
Straight hot-rolled bars shall be straight, with a curvature of no more than 4 mm per meter, and a total ridge curvature of no more than 0.1% of the total length of the alloy. mm
The roundness of hot-rolled round bars shall comply with the provisions of Table 8. The difference between the diagonals of hot-rolled square bars in the same section shall not be greater than half of the side length tolerance. Forged bars shall be straight, with a curvature of no more than 5 mm per meter, and a total curvature of no more than 0.5% of the total length. The ovality of forged round bars shall not be greater than 70% of the lower straightness tolerance. The difference between the diagonals of forged cubes in the same section shall not be greater than half of the side length tolerance.
2 Surface quality
2.1 Cold-rolled strip
G3/ 15001—94
Table 8 Roundness of hot-rolled bars
Precise roundness, not too large T
% of diameter tolerance
% of diameter tolerance
75% of diameter tolerance
The surface of cold-rolled strip should be flat and smooth, but it is allowed to have slight color and pitting, spots, scars, cracks, fire impurities, pores, roll decay, grinding marks, slight scratches and welds whose depth does not exceed the allowable deviation of thickness. 2.2 Cold-drawn wire
The surface of cold-drawn wire should be smooth, but it is allowed to have slight color and pitting, spots, scars, marks and slight scratches whose depth does not exceed the allowable deviation of diameter.
2.5 Cold drawn tubes
The surface quality of cold drawn tubes shall be subject to the agreement between the supplier and the buyer. 2.4 Hot rolled (forged) flats and bars
The surface of hot rolled (forged) flats and bars shall not have cracks, folds, spots, etc. Scratches, small spots, concave and roller marks that do not exceed the allowable deviation of the size are allowed. Local defects are allowed to be removed by grinding, and the minimum allowable size should be guaranteed after removal. 3 Test method
3.1 Chemical composition
For the chemical composition test of alloys, samples are taken from alloy ingots or alloy liquids. The sampling method and analysis method are respectively carried out in accordance with the relevant provisions of GB222-84 "Sampling Method for Chemical Analysis of Samples and Permissible Deviation of Chemical Composition of Finished Products" and (B223 "Chemical Analysis Methods for Steel and Alloys". 3.2 Surface Quality
For the surface quality test of alloys, the finished products are inspected with the naked eye. 3.3 Dimensions
The dimensions of the finished alloy products are measured with measuring tools such as sub-scales, vernier calipers and copper tape measures that can ensure accuracy. 3.4 Magnetic properties
3. 4. 1 The magnetic properties test samples of Taijin are generally cut from the finished products. However, wires, pipes and wires with a diameter less than or equal to 40 mm The hot rolled (forged) bars or wire rods are cut from the bad.
3.4.2 The preparation of the sample for the alloy magnetic property test shall be carried out in accordance with the provisions of GB3657-83 "Measurement Method of DC Magnetic Properties of Soft Alloys" and CB3658-83 "Measurement Method of AC Magnetic Properties of Soft Magnetic Alloys". 3.4.3 The magnetic properties of the alloy shall be measured on the sample after heat treatment. Heat treatment shall generally be carried out in accordance with the system recommended in the appendix of this standard. The sample annealing medium shall generally be pure argon gas. If annealing in vacuum is required, it shall be indicated in the order contract. 3.4.4 The DC magnetic properties of the alloy shall be measured in accordance with CB 3657--83. The AC magnetic properties of the alloy shall be determined in accordance with the provisions of GB3658-83.
4 Inspection rules
Inspection and acceptance
The inspection and acceptance of finished alloys shall be carried out by the supplier's technical supervision department. 4.2 Batch rules
GB/T15001-94
Alloys shall be submitted for inspection and acceptance in batches. Each batch shall consist of alloy materials of the same grade, same furnace number, same size, and same delivery status.
4.3 Sampling quantity
4.3.1 Chemical composition Take one sample from each furnace for analysis. 4.3.2 Surface quality and size inspection should be carried out remotely (by hand), 4.3.3 Magnetic performance inspection should take one sample from each batch, 4.4 Re-inspection and judgment rules
When the magnetic performance fails the initial inspection, it is allowed to take double the number of samples for re-inspection. When the re-inspection fails, it is allowed to take another sample and change the heat treatment system for inspection.
GB/T15001---94
Appendix A
Recommended sample heat treatment system
(Supplement)
A.1 The sample should generally be heated at a dew point not higher than -40 ℃ purified hydrogen. If vacuum fire is required, the vacuum should be carried out with a residual pressure of no more than 1.5 Pa.
A,2 The annealed specimen should be smooth. Five-phase bonding and mechanical deformation are not allowed during annealing. A.3 The recommended heat treatment system is shown in Table A1.
A,4 In order to improve the mechanical properties of 1J46, 1J50, 1J79, 1J34.1J65.1J54, 1J77, 1J80, 1J85.1J86 alloys and semi-finished products, they can be preheated at 800-950 ℃ in the recommended basic heat treatment medium. Table A1 Recommended sample heat treatment system
Taiwan gold brand
1J46, 1.150,
1J79.1J83
J511J52
1.134, 1.165,
1J76.1J77
1.185, 1J86
Heating temperature
110~1150℃
! Preservation time,
First: 1 100～1150 ℃
First, 60 ℃ tempering in a longitudinal micro-field of not less than 800A/m
1100~110
1100~1150℃
1100~-1200℃
Step 1: 1 200℃
Second step, 650 ℃ annealing in a 16 × 10'A/m horizontal magnetic field
950~-1 050
900~1000
Cooling system: not more than 200/h Cool to 600℃ at a rate of not less than 400℃/h and then cool to 200℃ at a rate of not more than 200℃ and then take out of the furnace. Cool to 600℃ at a rate of not more than 200℃ and then take out of the furnace at a cooling rate of 300℃. Cool to 200℃ at a cooling rate of 25~100℃/h and then take out of the furnace. Cool to 400~500℃ at a rate of 200C/h and then take out of the furnace at a rate of not less than 400/1. Cool to 200℃ at a rate of 100~150℃/h and then cool to 200℃ at a rate of 10~50℃/h and then take out of the furnace. Cool to 600℃ at a speed of 100℃/h, then cool to 300℃ at a speed of not less than 400℃/h and take out of the furnace
Cool to 600 at a speed of 100℃/h, then cool to 300℃ at a speed of not less than 400℃/h and take out of the furnace
Cool to 200℃ at a speed of 50~110:/1 and take out of the furnace
Cool to 200℃ at a speed of 100~-150℃/h The speed of cooling is 200℃, then it is cooled to 250℃ and then taken out of the furnace. Applicable to making iron core alloy grades 1330, 1J31, 1J32, 1J33. Additional instructions: Heating temperature 1050～1200, 900~950, 780800℃, keep warm at 950℃ for 4h, then heat up to 1 050℃ with the furnace, 850~900℃, 1100℃, 850℃, the first step: 1100～1200~1600℃ / m longitudinal foundation
600 ~ 700 ℃ return
1150 ~ 1250 ℃
GB/T 15001-94
Continued Table A1
: Holding time, h
Cooling system
Cool to 500 T: at a rate of 100 -→ 150 C: / h, then quickly cool (blowing) the piece to 200 C: out of the furnace and cool to 650 C: at a rate of 100%/h, then cool to 200 C: at a rate not greater than 60/h out of the furnace
Cool to 650 C: at a rate of 100 C: /h, then cool to 20 C: at a rate not greater than 6 C: /h out of the furnace
Cool to 60 C: in the furnace
Cool to 750 C: at a rate of 50 ~ 100/h Then, cool to 300°C at a speed of 180-240°C:/h and take out of the furnace
cool to 60°C at a speed of 50-10/h
keep warm for 3h, then cool to 700°C at a speed of 30/h, then cool to 300°C at a speed of 200°C/h and take out of the furnace
cool to 750°C at a speed of 50:/h and keep warm for 3h, then cool to 300°C at a speed of 200°C/h and take out. Start from heat preservation (750℃) and add 1200~1600 A/m DC magnetic field
furnace cooling to 2U0 out of the furnace
furnace cooling system is below 400℃ out of the furnace
cooled to 200℃ at a speed of 50~150℃/h and then cooled to 450～650℃ at a speed of 100~200℃/h, and then quickly cooled to 200℃ and then started. This standard was proposed by the Information Standard Research Institute of the Ministry of Metallurgical Industry. This standard was drafted by Dalian Steel Plant.
This standard level grade mark GB/T15001--941 is applicable to the wire
spindle ...2 Surface Quality
The surface quality inspection of alloys shall be carried out with naked eyes on finished products. 3.3 Dimensions
The dimensions of finished alloys shall be measured with measuring tools such as sub-scale, vernier caliper and copper tape measure that can ensure accuracy. 3.4 Magnetic Properties
3. 4. 1 The magnetic properties inspection specimens of Taijin are generally cut from finished products. However, wires, tubes and hot-rolled (forged) bars or wire rods with a diameter less than or equal to 40 mm are cut from the finished products.
3.4.2 The specimens for alloy magnetic properties testing shall be prepared in accordance with the provisions of GB3657-83 "Measurement Method of DC Magnetic Properties of Soft Alloys" and CB3658-83 "Measurement Method of AC Magnetic Properties of Soft Magnetic Alloys". 3.4.3 The magnetic properties of the alloy shall be measured on the specimens after heat treatment. Heat treatment shall generally be carried out in accordance with the system recommended in the appendix of this standard. The annealing medium of the specimen shall generally be pure argon. When annealing in vacuum is required, it should be indicated in the order contract. 3.4.4 The DC magnetic properties of the alloy shall be measured in accordance with the provisions of CB 3657--83. The AC magnetic properties of the alloy shall be measured in accordance with the provisions of GB3658-83.
4 Inspection rules
Inspection and acceptance
The inspection and acceptance of finished alloy products shall be carried out by the supplier's technical supervision department. 4.2 Batch rules
GB/T15001-94
Alloys shall be submitted for inspection and acceptance in batches. Each batch shall consist of alloy materials of the same grade, same furnace number, same size and same delivery status.
4.3 Sampling quantity
4.3.1 Chemical composition analysis Take one sample from each furnace. 4.3.2 Surface quality and dimension inspection shall be conducted remotely (disk), 4.3.3 Magnetic property inspection: take 100 samples per batch, 4.4 Re-inspection and judgment rules
When the magnetic property fails the initial inspection, it is allowed to take double the number of samples for re-inspection. When the re-inspection fails, it is allowed to take samples again and change the heat treatment system for inspection.
GB/T15001---94
Appendix A
Recommended heat treatment system for samples
(Supplement)
A.1 The sample shall generally be heat treated in purified hydrogen with a dew point not higher than -40 ℃. If vacuum fire is required, it shall be carried out in a vacuum with a residual pressure not greater than 10, Pa.
A.2 The annealed sample shall be smooth. Five-phase bonding and mechanical deformation are not allowed during the annealing process. A.3 The recommended heat treatment system is shown in Table A1.
A,4 In order to improve the mechanical properties of 1J46, 1J50, 1J79, 1J34.1J65.1J54, 1J77, 1J80, 1J85.1J86 alloys and semi-finished products, they can be preheated at 800~950℃ in the recommended basic heat treatment medium. Table A1 Recommended sample heat treatment system
Taiwan gold brand
1J46, 1.150,
1J79.1J83
J511J52
1.134, 1.165,
1J76.1J77
1.185, 1J86
Heating temperature
110~1150℃
! Preservation time,
First: 1 100～1150 ℃
First, 60 ℃ tempering in a longitudinal micro-field of not less than 800A/m
1100~110
1100~1150℃
1100~-1200℃
Step 1: 1 200℃
Second step, 650 ℃ annealing in a 16 × 10'A/m horizontal magnetic field
950~-1 050
900~1000
Cooling system: not more than 200/h Cool to 600℃ at a rate of not less than 400℃/h and then cool to 200℃ at a rate of not more than 200℃ and then take out of the furnace. Cool to 600℃ at a rate of not more than 200℃ and then take out of the furnace at a cooling rate of 300℃. Cool to 200℃ at a cooling rate of 25~100℃/h and then take out of the furnace. Cool to 400~500℃ at a rate of 200C/h and then take out of the furnace at a rate of not less than 400/1. Cool to 200℃ at a rate of 100~150℃/h and then cool to 200℃ at a rate of 10~50℃/h and then take out of the furnace. Cool to 600℃ at a speed of 100℃/h, then cool to 300℃ at a speed of not less than 400℃/h and take out of the furnace
Cool to 600 at a speed of 100℃/h, then cool to 300℃ at a speed of not less than 400℃/h and take out of the furnace
Cool to 200℃ at a speed of 50~110:/1 and take out of the furnace
Cool to 200℃ at a speed of 100~-150℃/h The speed of cooling is 200℃, then it is cooled to 250℃ and then taken out of the furnace. Applicable to making iron core alloy grades 1330, 1J31, 1J32, 1J33. Additional instructions: Heating temperature 1050～1200, 900~950, 780800℃, keep warm at 950℃ for 4h, then heat up to 1 050℃ with the furnace, 850~900℃, 1100℃, 850℃, the first step: 1100～1200~1600℃ / m longitudinal foundation
600 ~ 700 ℃ return
1150 ~ 1250 ℃
GB/T 15001-94
Continued Table A1
: Holding time, h
Cooling system
Cool to 500 T: at a rate of 100 -→ 150 C: / h, then quickly cool (blowing) the piece to 200 C: out of the furnace and cool to 650 C: at a rate of 100%/h, then cool to 200 C: at a rate not greater than 60/h out of the furnace
Cool to 650 C: at a rate of 100 C: /h, then cool to 20 C: at a rate not greater than 6 C: /h out of the furnace
Cool to 60 C: in the furnace
Cool to 750 C: at a rate of 50 ~ 100/h Then, cool to 300°C at a speed of 180-240°C:/h and take out of the furnace
cool to 60°C at a speed of 50-10/h
keep warm for 3h, then cool to 700°C at a speed of 30/h, then cool to 300°C at a speed of 200°C/h and take out of the furnace
cool to 750°C at a speed of 50:/h and keep warm for 3h, then cool to 300°C at a speed of 200°C/h and take out. Start from heat preservation (750℃) and add 1200~1600 A/m DC magnetic field
furnace cooling to 2U0 out of the furnace
furnace cooling system is below 400℃ out of the furnace
cooled to 200℃ at a speed of 50~150℃/h and then cooled to 450～650℃ at a speed of 100~200℃/h, and then quickly cooled to 200℃ and then started. This standard was proposed by the Information Standard Research Institute of the Ministry of Metallurgical Industry. This standard was drafted by Dalian Steel Plant.
This standard level grade mark GB/T15001--941 is applicable to the wire
spindle ...2 Surface Quality
The surface quality inspection of alloys shall be carried out with naked eyes on finished products. 3.3 Dimensions
The dimensions of finished alloys shall be measured with measuring tools such as sub-scale, vernier caliper and copper tape measure that can ensure accuracy. 3.4 Magnetic Properties
3. 4. 1 The magnetic properties inspection specimens of Taijin are generally cut from finished products. However, wires, tubes and hot-rolled (forged) bars or wire rods with a diameter less than or equal to 40 mm are cut from the finished products.
3.4.2 The specimens for alloy magnetic properties testing shall be prepared in accordance with the provisions of GB3657-83 "Measurement Method of DC Magnetic Properties of Soft Alloys" and CB3658-83 "Measurement Method of AC Magnetic Properties of Soft Magnetic Alloys". 3.4.3 The magnetic properties of the alloy shall be measured on the specimens after heat treatment. Heat treatment shall generally be carried out in accordance with the system recommended in the appendix of this standard. The annealing medium of the specimen shall generally be pure argon. When annealing in vacuum is required, it should be indicated in the order contract. 3.4.4 The DC magnetic properties of the alloy shall be measured in accordance with the provisions of CB 3657--83. The AC magnetic properties of the alloy shall be measured in accordance with the provisions of GB3658-83.
4 Inspection rules
Inspection and acceptance
The inspection and acceptance of finished alloy products shall be carried out by the supplier's technical supervision department. 4.2 Batch rules
GB/T15001-94
Alloys shall be submitted for inspection and acceptance in batches. Each batch shall consist of alloy materials of the same grade, same furnace number, same size and same delivery status.
4.3 Sampling quantity
4.3.1 Chemical composition analysis Take one sample from each furnace. 4.3.2 Surface quality and dimension inspection shall be conducted remotely (disk), 4.3.3 Magnetic property inspection: take 100 samples per batch, 4.4 Re-inspection and judgment rules
When the magnetic property fails the initial inspection, it is allowed to take double the number of samples for re-inspection. When the re-inspection fails, it is allowed to take samples again and change the heat treatment system for inspection.
GB/T15001---94
Appendix A
Recommended heat treatment system for samples
(Supplement)
A.1 The sample shall generally be heat treated in purified hydrogen with a dew point not higher than -40 ℃. If vacuum fire is required, it shall be carried out in a vacuum with a residual pressure not greater than 10, Pa.
A.2 The annealed sample shall be smooth. Five-phase bonding and mechanical deformation are not allowed during the annealing process. A.3 The recommended heat treatment system is shown in Table A1.
A,4 In order to improve the mechanical properties of 1J46, 1J50, 1J79, 1J34.1J65.1J54, 1J77, 1J80, 1J85.1J86 alloys and semi-finished products, they can be preheated at 800~950℃ in the recommended basic heat treatment medium. Table A1 Recommended sample heat treatment system
Taiwan gold brand
1J46, 1.150,
1J79.1J83
J511J52
1.134, 1.165,
1J76.1J77
1.185, 1J86
Heating temperature
110~1150℃
! Preservation time,
First: 1 100～1150 ℃
First, 60 ℃ tempering in a longitudinal micro-field of not less than 800A/m
1100~110
1100~1150℃
1100~-1200℃
Step 1: 1 200℃
Second step, 650 ℃ annealing in a 16 × 10'A/m horizontal magnetic field
950~-1 050
900~1000
Cooling system: not more than 200/h Cool to 600℃ at a rate of not less than 400℃/h and then cool to 200℃ at a rate of not more than 200℃ and then take out of the furnace. Cool to 600℃ at a rate of not more than 200℃ and then take out of the furnace at a cooling rate of 300℃. Cool to 200℃ at a cooling rate of 25~100℃/h and then take out of the furnace. Cool to 400~500℃ at a rate of 200C/h and then take out of the furnace at a rate of not less than 400/1. Cool to 200℃ at a rate of 100~150℃/h and then cool to 200℃ at a rate of 10~50℃/h and then take out of the furnace. Cool to 600℃ at a speed of 100℃/h, then cool to 300℃ at a speed of not less than 400℃/h and take out of the furnace
Cool to 600 at a speed of 100℃/h, then cool to 300℃ at a speed of not less than 400℃/h and take out of the furnace
Cool to 200℃ at a speed of 50~110:/1 and take out of the furnace
Cool to 200℃ at a speed of 100~-150℃/h The speed of cooling is 200℃, then it is cooled to 250℃ and then taken out of the furnace. Applicable to making iron core alloy grades 1330, 1J31, 1J32, 1J33. Additional instructions: Heating temperature 1050～1200, 900~950, 780800℃, keep warm at 950℃ for 4h, then heat up to 1 050℃ with the furnace, 850~900℃, 1100℃, 850℃, the first step: 1100～1200~1600℃ / m longitudinal foundation
600 ~ 700 ℃ return
1150 ~ 1250 ℃
GB/T 15001-94
Continued Table A1
: Holding time, h
Cooling system
Cool to 500 T: at a rate of 100 -→ 150 C: / h, then quickly cool (blowing) the piece to 200 C: out of the furnace and cool to 650 C: at a rate of 100%/h, then cool to 200 C: at a rate not greater than 60/h out of the furnace
Cool to 650 C: at a rate of 100 C: /h, then cool to 20 C: at a rate not greater than 6 C: /h out of the furnace
Cool to 60 C: in the furnace
Cool to 750 C: at a rate of 50 ~ 100/h Then, cool to 300°C at a speed of 180-240°C:/h and take out of the furnace
cool to 60°C at a speed of 50-10/h
keep warm for 3h, then cool to 700°C at a speed of 30/h, then cool to 300°C at a speed of 200°C/h and take out of the furnace
cool to 750°C at a speed of 50:/h and keep warm for 3h, then cool to 300°C at a speed of 200°C/h and take out. Start from heat preservation (750℃) and add 1200~1600 A/m DC magnetic field
furnace cooling to 2U0 out of the furnace
furnace cooling system is below 400℃ out of the furnace
cooled to 200℃ at a speed of 50~150℃/h and then cooled to 450～650℃ at a speed of 100~200℃/h, and then quickly cooled to 200℃ and then started. This standard was proposed by the Information Standard Research Institute of the Ministry of Metallurgical Industry. This standard was drafted by Dalian Steel Plant.
This standard level grade mark GB/T15001--941 is applicable to the wire
spindle ...2 The preparation of samples for alloy magnetic property test shall be carried out in accordance with the provisions of GB3657-83 "Measurement Method of DC Magnetic Properties of Soft Alloys" and CB3658-83 "Measurement Method of AC Magnetic Properties of Soft Magnetic Alloys". 3.4.3 The magnetic properties of the alloy shall be measured on the sample after heat treatment. Heat treatment shall generally be carried out in accordance with the recommended system in the appendix of this standard. The sample annealing medium shall generally be pure argon gas. When annealing in vacuum is required, it shall be indicated in the order contract. 3.4.4 The DC magnetic properties of the alloy shall be measured in accordance with the provisions of CB 3657--83. The AC magnetic properties of the alloy shall be measured in accordance with the provisions of GB3658-83.
4 Inspection rules
Inspection and acceptance
The inspection and acceptance of finished alloy products shall be carried out by the supplier's technical supervision department. 4.2 Batch rules
GB/T15001-94
Alloys shall be submitted for inspection and acceptance in batches. Each batch shall consist of alloy materials of the same grade, furnace number, size and delivery status.
4.3 Sampling quantity
4.3.1 One sample shall be taken from each furnace for chemical composition analysis. 4.3.2 Surface quality and dimension inspection shall be conducted remotely (by plate). 4.3.3 Magnetic property inspection shall take one sample from each batch. 4.4 Re-inspection and judgment rules
When the magnetic property fails the initial inspection, double the number of samples may be taken for re-inspection. When the re-inspection fails, re-sampling may be performed with the heat treatment system changed for inspection.
GB/T15001---94
Appendix A
Recommended sample heat treatment system
(Supplement)
A.1 The sample shall generally be heat treated in purified hydrogen with a dew point not higher than -40 ℃. If vacuum is required for fire, it shall be carried out in a vacuum with a residual pressure not greater than 10, Pa.
A,2 The annealed specimens shall be smooth. Five-phase bonding and mechanical deformation are not allowed during annealing. A.3 The recommended heat treatment system is shown in Table A1.
A,4 In order to improve the mechanical properties of 1J46, 1J50, 1J79, 1J34.1J65.1J54, 1J77, 1J80, 1J85.1J86 alloys and semi-finished products, they can be preheated at 800-950 ℃ in the recommended basic heat treatment medium. Table A1 Recommended heat treatment system for samples
Taiwan gold brand
1J46, 1.150,
1J79.1J83
J511J52
1.134, 1.165,
1J76.1J77
1.185, 1J86
Heating temperature
110~1150℃
! Preservation time,
First: 1 100～1150 ℃
First, 60 ℃ tempering in a longitudinal micro-field of not less than 800A/m
1100~110
1100~1150℃
1100~-1200℃
Step 1: 1 200℃
Second step, 650 ℃ annealing in a 16 × 10'A/m horizontal magnetic field
950~-1 050
900~1000
Cooling system: not more than 200/h Cool to 600℃ at a rate of not less than 400℃/h and then cool to 200℃ at a rate of not more than 200℃ and then take out of the furnace. Cool to 600℃ at a rate of not more than 200℃ and then take out of the furnace at a cooling rate of 300℃. Cool to 200℃ at a cooling rate of 25~100℃/h and then take out of the furnace. Cool to 400~500℃ at a rate of 200C/h and then take out of the furnace at a rate of not less than 400/1. Cool to 200℃ at a rate of 100~150℃/h and then cool to 200℃ at a rate of 10~50℃/h and then take out of the furnace. Cool to 600℃ at a speed of 100℃/h, then cool to 300℃ at a speed of not less than 400℃/h and take out of the furnace
Cool to 600 at a speed of 100℃/h, then cool to 300℃ at a speed of not less than 400℃/h and take out of the furnace
Cool to 200℃ at a speed of 50~110:/1 and take out of the furnace
Cool to 200℃ at a speed of 100~-150℃/h The speed of cooling is 200℃, then it is cooled to 250℃ and then taken out of the furnace. Applicable to making iron core alloy grades 1330, 1J31, 1J32, 1J33. Additional instructions: Heating temperature 1050～1200, 900~950, 780800℃, keep warm at 950℃ for 4h, then heat up to 1 050℃ with the furnace, 850~900℃, 1100℃, 850℃, the first step: 1100～1200~1600℃ / m longitudinal foundation
600 ~ 700 ℃ return
1150 ~ 1250 ℃
GB/T 15001-94
Continued Table A1
: Holding time, h
Cooling system
Cool to 500 T: at a rate of 100 -→ 150 C: / h, then quickly cool (blowing) the piece to 200 C: out of the furnace and cool to 650 C: at a rate of 100%/h, then cool to 200 C: at a rate not greater than 60/h out of the furnace
Cool to 650 C: at a rate of 100 C: /h, then cool to 20 C: at a rate not greater than 6 C: /h out of the furnace
Cool to 60 C: in the furnace
Cool to 750 C: at a rate of 50 ~ 100/h Then, cool to 300°C at a speed of 180-240°C:/h and take out of the furnace
cool to 60°C at a speed of 50-10/h
keep warm for 3h, then cool to 700°C at a speed of 30/h, then cool to 300°C at a speed of 200°C/h and take out of the furnace
cool to 750°C at a speed of 50:/h and keep warm for 3h, then cool to 300°C at a speed of 200°C/h and take out. Start from heat preservation (750℃) and add 1200~1600 A/m DC magnetic field
furnace cooling to 2U0 out of the furnace
furnace cooling system is below 400℃ out of the furnace
cooled to 200℃ at a speed of 50~150℃/h and then cooled to 450～650℃ at a speed of 100~200℃/h, and then quickly cooled to 200℃ and then started. This standard was proposed by the Information Standard Research Institute of the Ministry of Metallurgical Industry. This standard was drafted by Dalian Steel Plant.
This standard level grade mark GB/T15001--941 is applicable to the wire
spindle ...2 The preparation of samples for alloy magnetic property test shall be carried out in accordance with the provisions of GB3657-83 "Measurement Method of DC Magnetic Properties of Soft Alloys" and CB3658-83 "Measurement Method of AC Magnetic Properties of Soft Magnetic Alloys". 3.4.3 The magnetic properties of the alloy shall be measured on the sample after heat treatment. Heat treatment shall generally be carried out in accordance with the recommended system in the appendix of this standard. The sample annealing medium shall generally be pure argon gas. When annealing in vacuum is required, it shall be indicated in the order contract. 3.4.4 The DC magnetic properties of the alloy shall be measured in accordance with the provisions of CB 3657--83. The AC magnetic properties of the alloy shall be measured in accordance with the provisions of GB3658-83.
4 Inspection rules
Inspection and acceptance
The inspection and acceptance of finished alloy products shall be carried out by the supplier's technical supervision department. 4.2 Batch rulesbZxz.net
GB/T15001-94
Alloys shall be submitted for inspection and acceptance in batches. Each batch shall consist of alloy materials of the same grade, furnace number, size and delivery status.
4.3 Sampling quantity
4.3.1 One sample shall be taken from each furnace for chemical composition analysis. 4.3.2 Surface quality and dimension inspection shall be conducted remotely (by plate). 4.3.3 Magnetic property inspection shall take one sample from each batch. 4.4 Re-inspection and judgment rules
When the magnetic property fails the initial inspection, double the number of samples may be taken for re-inspection. When the re-inspection fails, re-sampling may be performed with the heat treatment system changed for inspection.
GB/T15001---94
Appendix A
Recommended sample heat treatment system
(Supplement)
A.1 The sample shall generally be heat treated in purified hydrogen with a dew point not higher than -40 ℃. If vacuum is required for fire, it shall be carried out in a vacuum with a residual pressure not greater than 10, Pa.
A,2 The annealed specimens shall be smooth. Five-phase bonding and mechanical deformation are not allowed during annealing. A.3 The recommended heat treatment system is shown in Table A1.
A,4 In order to improve the mechanical properties of 1J46, 1J50, 1J79, 1J34.1J65.1J54, 1J77, 1J80, 1J85.1J86 alloys and semi-finished products, they can be preheated at 800-950 ℃ in the recommended basic heat treatment medium. Table A1 Recommended heat treatment system for samples
Taiwan gold brand
1J46, 1.150,
1J79.1J83
J511J52
1.134, 1.165,
1J76.1J77
1.185, 1J86
Heating temperature
110~1150℃
! Preservation time,
First: 1 100～1150 ℃
First, 60 ℃ tempering in a longitudinal micro-field of not less than 800A/m
1100~110
1100~1150℃
1100~-1200℃
Step 1: 1 200℃
Second step, 650 ℃ annealing in a 16 × 10'A/m horizontal magnetic field
950~-1 050
900~1000
Cooling system: not more than 200/h Cool to 600℃ at a rate of not less than 400℃/h and then cool to 200℃ at a rate of not more than 200℃ and then take out of the furnace. Cool to 600℃ at a rate of not more than 200℃ and then take out of the furnace at a cooling rate of 300℃. Cool to 200℃ at a cooling rate of 25~100℃/h and then take out of the furnace. Cool to 400~500℃ at a rate of 200C/h and then take out of the furnace at a rate of not less than 400/1. Cool to 200℃ at a rate of 100~150℃/h and then cool to 200℃ at a rate of 10~50℃/h and then take out of the furnace. Cool to 600℃ at a speed of 100℃/h, then cool to 300℃ at a speed of not less than 400℃/h and take out of the furnace
Cool to 600 at a speed of 100℃/h, then cool to 300℃ at a speed of not less than 400℃/h and take out of the furnace
Cool to 200℃ at a speed of 50~110:/1 and take out of the furnace
Cool to 200℃ at a speed of 100~-150℃/h The speed of cooling is 200℃, then it is cooled to 250℃ and then taken out of the furnace. Applicable to making iron core alloy grades 1330, 1J31, 1J32, 1J33. Additional instructions: Heating temperature 1050～1200, 900~950, 780800℃, keep warm at 950℃ for 4h, then heat up to 1 050℃ with the furnace, 850~900℃, 1100℃, 850℃, the first step: 1100～1200~1600℃ / m longitudinal foundation
600 ~ 700 ℃ return
1150 ~ 1250 ℃
GB/T 15001-94
Continued Table A1
: Holding time, h
Cooling system
Cool to 500 T: at a rate of 100 -→ 150 C: / h, then quickly cool (blowing) the piece to 200 C: out of the furnace and cool to 650 C: at a rate of 100%/h, then cool to 200 C: at a rate not greater than 60/h out of the furnace
Cool to 650 C: at a rate of 100 C: /h, then cool to 20 C: at a rate not greater than 6 C: /h out of the furnace
Cool to 60 C: in the furnace
Cool to 750 C: at a rate of 50 ~ 100/h Then, cool to 300°C at a speed of 180-240°C:/h and take out of the furnace
cool to 60°C at a speed of 50-10/h
keep warm for 3h, then cool to 700°C at a speed of 30/h, then cool to 300°C at a speed of 200°C/h and take out of the furnace
cool to 750°C at a speed of 50:/h and keep warm for 3h, then cool to 300°C at a speed of 200°C/h and take out. Start from heat preservation (750℃) and add 1200~1600 A/m DC magnetic field
furnace cooling to 2U0 out of the furnace
furnace cooling system is below 400℃ out of the furnace
cooled to 200℃ at a speed of 50~150℃/h and then cooled to 450～650℃ at a speed of 100~200℃/h, and then quickly cooled to 200℃ and then started. This standard was proposed by the Information Standard Research Institute of the Ministry of Metallurgical Industry. This standard was drafted by Dalian Steel Plant.
This standard level grade mark GB/T15001--941 is applicable to the wire
spindle ...1 Chemical composition analysis Take one sample from each furnace. 4.3.2 Surface quality and size inspection should be carried out remotely (disk), 4.3.3 Magnetic properties inspection Take one sample from each batch, 4.4 Re-inspection and judgment rules
If the magnetic properties are not qualified in the initial inspection, it is allowed to take double the number of samples for re-inspection. If the re-inspection is not qualified, it is allowed to take samples again and change the heat treatment system for inspection.
GB/T15001---94
Appendix A
Recommended sample heat treatment system
(Supplement)
A.1 The sample should generally be heat treated in purified hydrogen with a dew point not higher than -40 ℃. If vacuum fire is required, it should be carried out in a vacuum with a residual pressure not greater than 10, Pa.
A, 2 The sample after annealing should be smooth. Five-phase bonding and mechanical deformation are not allowed during annealing. A.3 The recommended heat treatment system is shown in Table A1.
A,4 In order to improve the mechanical properties of 1J46, 1J50, 1J79, 1J34.1J65.1J54, 1J77, 1J80, 1J85.1J86 alloys and semi-finished products, they can be preheated at 800~950℃ in the recommended basic heat treatment medium. Table A1 Recommended sample heat treatment system
Taiwan gold brand
1J46, 1.150,
1J79.1J83
J511J52
1.134, 1.165,
1J76.1J77
1.185, 1J86
Heating temperature
110~1150℃
! Preservation time,
First: 1 100～1150 ℃
First, 60 ℃ tempering in a longitudinal micro-field of not less than 800A/m
1100~110
1100~1150℃
1100~-1200℃
Step 1: 1 200℃
Second step, 650 ℃ annealing in a 16 × 10'A/m horizontal magnetic field
950~-1 050
900~1000
Cooling system: not more than 200/h Cool to 600℃ at a rate of not less than 400℃/h and then cool to 200℃ at a rate of not more than 200℃ and then take out of the furnace. Cool to 600℃ at a rate of not more than 200℃ and then take out of the furnace at a cooling rate of 300℃. Cool to 200℃ at a cooling rate of 25~100℃/h and then take out of the furnace. Cool to 400~500℃ at a rate of 200C/h and then take out of the furnace at a rate of not less than 400/1. Cool to 200℃ at a rate of 100~150℃/h and then cool to 200℃ at a rate of 10~50℃/h and then take out of the furnace. Cool to 600℃ at a speed of 100℃/h, then cool to 300℃ at a speed of not less than 400℃/h and take out of the furnace
Cool to 600 at a speed of 100℃/h, then cool to 300℃ at a speed of not less than 400℃/h and take out of the furnace
Cool to 200℃ at a speed of 50~110:/1 and take out of the furnace
Cool to 200℃ at a speed of 100~-150℃/h The speed of cooling is 200℃, then it is cooled to 250℃ and then taken out of the furnace. Applicable to making iron core alloy grades 1330, 1J31, 1J32, 1J33. Additional instructions: Heating temperature 1050～1200, 900~950, 780800℃, keep warm at 950℃ for 4h, then heat up to 1 050℃ with the furnace, 850~900℃, 1100℃, 850℃, the first step: 1100～1200~1600℃ / m longitudinal foundation
600 ~ 700 ℃ return
1150 ~ 1250 ℃
GB/T 15001-94
Continued Table A1
: Holding time, h
Cooling system
Cool to 500 T: at a rate of 100 -→ 150 C: / h, then quickly cool (blowing) the piece to 200 C: out of the furnace and cool to 650 C: at a rate of 100%/h, then cool to 200 C: at a rate not greater than 60/h out of the furnace
Cool to 650 C: at a rate of 100 C: /h, then cool to 20 C: at a rate not greater than 6 C: /h out of the furnace
Cool to 60 C: in the furnace
Cool to 750 C: at a rate of 50 ~ 100/h Then, cool to 300°C at a speed of 180-240°C:/h and take out of the furnace
cool to 60°C at a speed of 50-10/h
keep warm for 3h, then cool to 700°C at a speed of 30/h, then cool to 300°C at a speed of 200°C/h and take out of the furnace
cool to 750°C at a speed of 50:/h and keep warm for 3h, then cool to 300°C at a speed of 200°C/h and take out. Start from heat preservation (750℃) and add 1200~1600 A/m DC magnetic field
furnace cooling to 2U0 out of the furnace
furnace cooling system is below 400℃ out of the furnace
cooled to 200℃ at a speed of 50~150℃/h and then cooled to 450～650℃ at a speed of 100~200℃/h, and then quickly cooled to 200℃ and then started. This standard was proposed by the Information Standard Research Institute of the Ministry of Metallurgical Industry. This standard was drafted by Dalian Steel Plant.
This standard level grade mark GB/T15001--941 is applicable to the wire
spindle ...1 Chemical composition analysis Take one sample from each furnace. 4.3.2 Surface quality and size inspection should be carried out remotely (disk), 4.3.3 Magnetic properties inspection Take one sample from each batch, 4.4 Re-inspection and judgment rules
If the magnetic properties are not qualified in the initial inspection, it is allowed to take double the number of samples for re-inspection. If the re-inspection is not qualified, it is allowed to take samples again and change the heat treatment system for inspection.
GB/T15001---94
Appendix A
Recommended sample heat treatment system
(Supplement)
A.1 The sample should generally be heat treated in purified hydrogen with a dew point not higher than -40 ℃. If vacuum fire is required, it should be carried out in a vacuum with a residual pressure not greater than 10, Pa.
A, 2 The sample after annealing should be smooth. Five-phase bonding and mechanical deformation are not allowed during annealing. A.3 The recommended heat treatment system is shown in Table A1.
A,4 In order to improve the mechanical properties of 1J46, 1J50, 1J79, 1J34.1J65.1J54, 1J77, 1J80, 1J85.1J86 alloys and semi-finished products, they can be preheated at 800~950℃ in the recommended basic heat treatment medium. Table A1 Recommended sample heat treatment system
Taiwan gold brand
1J46, 1.150,
1J79.1J83
J511J52
1.134, 1.165,
1J76.1J77
1.185, 1J86
Heating temperature
110~1150℃
! Preservation time,
First: 1 100～1150 ℃
First, 60 ℃ tempering in a longitudinal micro-field of not less than 800A/m
1100~110
1100~1150℃
1100~-1200℃
Step 1: 1 200℃
Second step, 650 ℃ annealing in a 16 × 10'A/m horizontal magnetic field
950~-1 050
900~1000
Cooling system: not more than 200/h Cool to 600℃ at a rate of not less than 400℃/h and then cool to 200℃ at a rate of not more than 200℃ and then take out of the furnace. Cool to 600℃ at a rate of not more than 200℃ and then take out of the furnace at a cooling rate of 300℃. Cool to 200℃ at a cooling rate of 25~100℃/h and then take out of the furnace. Cool to 400~500℃ at a rate of 200C/h and then take out of the furnace at a rate of not less than 400/1. Cool to 200℃ at a rate of 100~150℃/h and then cool to 200℃ at a rate of 10~50℃/h and then take out of the furnace. Cool to 600℃ at a speed of 100℃/h, then cool to 300℃ at a speed of not less than 400℃/h and take out of the furnace
Cool to 600 at a speed of 100℃/h, then cool to 300℃ at a speed of not less than 400℃/h and take out of the furnace
Cool to 200℃ at a speed of 50~110:/1 and take out of the furnace
Cool to 200℃ at a speed of 100~-150℃/h The speed of cooling is 200℃, then it is cooled to 250℃ and then taken out of the furnace. Applicable to making iron core alloy grades 1330, 1J31, 1J32, 1J33. Additional instructions: Heating temperature 1050～1200, 900~950, 780800℃, keep warm at 950℃ for 4h, then heat up to 1 050℃ with the furnace, 850~900℃, 1100℃, 850℃, the first step: 1100～1200~1600℃ / m longitudinal foundation
600 ~ 700 ℃ return
1150 ~ 1250 ℃
GB/T 15001-94
Continued Table A1
: Holding time, h
Cooling system
Cool to 500 T: at a rate of 100 -→ 150 C: / h, then quickly cool (blowing) the piece to 200 C: out of the furnace and cool to 650 C: at a rate of 100%/h, then cool to 200 C: at a rate not greater than 60/h out of the furnace
Cool to 650 C: at a rate of 100 C: /h, then cool to 20 C: at a rate not greater than 6 C: /h out of the furnace
Cool to 60 C: in the furnace
Cool to 750 C: at a rate of 50 ~ 100/h Then, cool to 300°C at a speed of 180-240°C:/h and take out of the furnace
cool to 60°C at a speed of 50-10/h
keep warm for 3h, then cool to 700°C at a speed of 30/h, then cool to 300°C at a speed of 200°C/h and take out of the furnace
cool to 750°C at a speed of 50:/h and keep warm for 3h, then cool to 300°C at a speed of 200°C/h and take out. Start from heat preservation (750℃) and add 1200~1600 A/m DC magnetic field
furnace cooling to 2U0 out of the furnace
furnace cooling system is below 400℃ out of the furnace
cooled to 200℃ at a speed of 50~150℃/h and then cooled to 450～650℃ at a speed of 100~200℃/h, and then quickly cooled to 200℃ and then started. This standard was proposed by the Information Standard Research Institute of the Ministry of Metallurgical Industry. This standard was drafted by Dalian Steel Plant.
This standard level grade mark GB/T15001--941 is applicable to the wire
spindle ...185, 1J86
Heating temperature
110~1150℃
! Preservation time,
First: 1 100～1150 ℃
First, 60 ℃ tempering in a longitudinal micro-field of not less than 800A/m
1100~110
1100~1150℃
1100~-1200℃
Step 1: 1 200℃
Second step, 650 ℃ annealing in a 16 × 10'A/m horizontal magnetic field
950~-1 050
900~1000
Cooling system: not more than 200/h Cool to 600℃ at a rate of not less than 400℃/h and then cool to 200℃ at a rate of not more than 200℃ and then take out of the furnace. Cool to 600℃ at a rate of not more than 200℃ and then take out of the furnace at a cooling rate of 300℃. Cool to 200℃ at a cooling rate of 25~100℃/h and then take out of the furnace. Cool to 400~500℃ at a rate of 200C/h and then take out of the furnace at a rate of not less than 400/1. Cool to 200℃ at a rate of 100~150℃/h and then cool to 200℃ at a rate of 10~50℃/h and then take out of the furnace. Cool to 600℃ at a speed of 100℃/h, then cool to 300℃ at a speed of not less than 400℃/h and take out of the furnace
Cool to 600 at a speed of 100℃/h, then cool to 300℃ at a speed of not less than 400℃/h and take out of the furnace
Cool to 200℃ at a speed of 50~110:/1 and take out of the furnace
Cool to 200℃ at a speed of 100~-150℃/h The speed of cooling is 200℃, then it is cooled to 250℃ and then taken out of the furnace. Applicable to making iron core alloy grades 1330, 1J31, 1J32, 1J33. Additional instructions: Heating temperature 1050～1200, 900~950, 780800℃, keep warm at 950℃ for 4h, then heat up to 1 050℃ with the furnace, 850~900℃, 1100℃, 850℃, the first step: 1100～1200~1600℃ / m longitudinal foundation
600 ~ 700 ℃ return
1150 ~ 1250 ℃
GB/T 15001-94
Continued Table A1
: Holding time, h
Cooling system
Cool to 500 T: at a rate of 100 -→ 150 C: / h, then quickly cool (blowing) the piece to 200 C: out of the furnace and cool to 650 C: at a rate of 100%/h, then cool to 200 C: at a rate not greater than 60/h out of the furnace
Cool to 650 C: at a rate of 100 C: /h, then cool to 20 C: at a rate not greater than 6 C: /h out of the furnace
Cool to 60 C: in the furnace
Cool to 750 C: at a rate of 50 ~ 100/h Then, cool to 300°C at a speed of 180-240°C:/h and take out of the furnace
cool to 60°C at a speed of 50-10/h
keep warm for 3h, then cool to 700°C at a speed of 30/h, then cool to 300°C at a speed of 200°C/h and take out of the furnace
cool to 750°C at a speed of 50:/h and keep warm for 3h, then cool to 300°C at a speed of 200°C/h and take out. Start from heat preservation (750℃) and add 1200~1600 A/m DC magnetic field
furnace cooling to 2U0 out of the furnace
furnace cooling system is below 400℃ out of the furnace
cooled to 200℃ at a speed of 50~150℃/h and then cooled to 450～650℃ at a speed of 100~200℃/h, and then quickly cooled to 200℃ and then started. This standard was proposed by the Information Standard Research Institute of the Ministry of Metallurgical Industry. This standard was drafted by Dalian Steel Plant.
This standard level grade mark GB/T15001--941 is applicable to the wire
spindle ...185, 1J86
Heating temperature
110~1150℃
! Preservation time,
First: 1 100～1150 ℃
First, 60 ℃ tempering in a longitudinal micro-field of not less than 800A/m
1100~110
1100~1150℃
1100~-1200℃
Step 1: 1 200℃
Second step, 650 ℃ annealing in a 16 × 10'A/m horizontal magnetic field
950~-1 050
900~1000
Cooling system: not more than 200/h Cool to 600℃ at a rate of not less than 400℃/h and then cool to 200℃ at a rate of not more than 200℃ and then take out of the furnace. Cool to 600℃ at a rate of not more than 200℃ and then take out of the furnace at a cooling rate of 300℃. Cool to 200℃ at a cooling rate of 25~100℃/h and then take out of the furnace. Cool to 400~500℃ at a rate of 200C/h and then take out of the furnace at a rate of not less than 400/1. Cool to 200℃ at a rate of 100~150℃/h and then cool to 200℃ at a rate of 10~50℃/h and then take out of the furnace. Cool to 600℃ at a speed of 100℃/h, then cool to 300℃ at a speed of not less than 400℃/h and take out of the furnace
Cool to 600 at a speed of 100℃/h, then cool to 300℃ at a speed of not less than 400℃/h and take out of the furnace
Cool to 200℃ at a speed of 50~110:/1 and take out of the furnace
Cool to 200℃ at a speed of 100~-150℃/h The speed of cooling is 200℃, then it is cooled to 250℃ and then taken out of the furnace. Applicable to making iron core alloy grades 1330, 1J31, 1J32, 1J33. Additional instructions: Heating temperature 1050～1200, 900~950, 780800℃, keep warm at 950℃ for 4h, then heat up to 1 050℃ with the furnace, 850~900℃, 1100℃, 850℃, the first step: 1100～1200~1600℃ / m longitudinal foundation
600 ~ 700 ℃ return
1150 ~ 1250 ℃
GB/T 15001-94
Continued Table A1
: Holding time, h
Cooling system
Cool to 500 T: at a rate of 100 -→ 150 C: / h, then quickly cool (blowing) the piece to 200 C: out of the furnace and cool to 650 C: at a rate of 100%/h, then cool to 200 C: at a rate not greater than 60/h out of the furnace
Cool to 650 C: at a rate of 100 C: /h, then cool to 20 C: at a rate not greater than 6 C: /h out of the furnace
Cool to 60 C: in the furnace
Cool to 750 C: at a rate of 50 ~ 100/h Then, cool to 300°C at a speed of 180-240°C:/h and take out of the furnace
cool to 60°C at a speed of 50-10/h
keep warm for 3h, then cool to 700°C at a speed of 30/h, then cool to 300°C at a speed of 200°C/h and take out of the furnace
cool to 750°C at a speed of 50:/h and keep warm for 3h, then cool to 300°C at a speed of 200°C/h and take out. Start from heat preservation (750℃) and add 1200~1600 A/m DC magnetic field
furnace cooling to 2U0 out of the furnace
furnace cooling system is below 400℃ out of the furnace
cooled to 200℃ at a speed of 50~150℃/h and then cooled to 450～650℃ at a speed of 100~200℃/h, and then quickly cooled to 200℃ and then started. This standard was proposed by the Information Standard Research Institute of the Ministry of Metallurgical Industry. This standard was drafted by Dalian Steel Plant.
This standard level grade mark GB/T15001--941 is applicable to the wire
spindle ...Start from heat preservation (750℃) and add 1200~1600 A/m DC magnetic field
furnace cooling to 2U0 out of the furnace
furnace cooling system below 400℃ out of the furnace
cool to 200℃ at a rate of 50~150℃/h and then cool to 450～650℃ at a rate of 100~200℃/h, then quickly cool to 200℃ and then start from this standard proposed by the Information Standard Research Institute of the Ministry of Metallurgical Industry. This standard was drafted by Dalian Steel Plant.
This standard level grade mark GB/T15001--941 is applicable to the wire
spindle ...Start from heat preservation (750℃) and add 1200~1600 A/m DC magnetic field
furnace cooling to 2U0 out of the furnace
furnace cooling system below 400℃ out of the furnace
cool to 200℃ at a rate of 50~150℃/h and then cool to 450～650℃ at a rate of 100~200℃/h, then quickly cool to 200℃ and then start from this standard proposed by the Information Standard Research Institute of the Ministry of Metallurgical Industry. This standard was drafted by Dalian Steel Plant.
This standard level grade mark GB/T15001--941 is applicable to the wire
spindle ...
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