GB/T 15006-1994 General provisions for dimensions, shape, surface quality, test methods and inspection rules for elastic alloys GB/T15006-1994 standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
General rules of dimensions, shape, surface qualitytest metherd and inspection rules for elastic alloysGB/T 15006—94
Replaces GBn 21584
This standard applies to the general provisions of dimensions, shape, surface quality, test methods and inspection rules for elastic alloy cold-rolled strip, cold-drawn wire, cold-drawn wrought material, cold-drawn polished bar and hot-rolled (forged) material. 1: Dimensions, shape
1.1 Cold-rolled strip
1.1. 1 Dimensions
The dimensions and permissible deviations of cold-rolled strips shall comply with the provisions of Table 1. The thickness accuracy level shall be indicated in the contract, otherwise delivery shall be based on ordinary accuracy.
Allow deviation
Normal accuracy
0.05 ~~0. 07
>0. 07~-0. 12
>0.12~-0.20
>0. 20~-0. 30
0. 30~0. 40
>0. 40~0. 60
≥>0, 60--0. 80
>0. 80 ~1. 00
>1. 00~1, 30
>1. 30~-1. 80
>1.B0~2.50
>2. 50~ 3. 50
1. 1.2 Appearance
— 0. 06
— 0. 08
.0. 15
Approved by the State Administration of Technical Supervision on April 4, 1994High sugar content
— 0. 02
50~250
Allowable deviation
Non-tough edge
Implemented on May 1, 1994
GB/T15006—94
1.1.2.1 Cold-rolled strips with a thickness of no more than 1.5 mm are generally delivered in coils. Straight strips, fixed lengths or multiple lengths can also be delivered after negotiation between the supply and demand parties, but it should be noted in the contract that strips with a thickness of more than 1.5 mm are generally delivered in straight strips. 1.1.2.2 The length of cold-rolled strip should be greater than 10 times the width. The heavy order is allowed to submit strips with a length of not less than 0.3m, which does not exceed 10% of the weight of the batch.
1.1.2.3 Cold-rolled strips should be delivered with trimmed edges. Strips with a thickness of more than 1.3m can be delivered without trimming. 1.1.2.4 Cold-rolled strips delivered with trimmed edges are not allowed to have burrs and raised edges that affect use. Defects are allowed on the edges of untrimmed strips. However, the width should be guaranteed.
1.1.2.5 Cold-rolled strips shall not have obvious wins and waves. The sickle bend within each meter of length shall not be greater than 3mm. 1.2 Cold-drawn wire
1.2.1 Size
The diameter of cold-drawn wire and its allowable deviation shall comply with the provisions of Table 2. The accuracy level should be specified in the contract, otherwise delivery shall be based on normal accuracy.
Normal accuracy
01, 10 --0. 20
≥>0. 20 ~ 0. 50
>0. 50 ~ 0. 80
>0.80~1. 80
>1. 80~3. 50
>3. 50 ~6. 00
1.2.2 Appearance
二0, 03
1.2.2.1 The ovality of cold-drawn wire shall not be greater than half of the diameter tolerance. 1.2.2.2 Cold-drawn wire shall be coiled neatly and shall not have a \c\ shape. 1.3 Cold drawn bars and cold drawn polished bars
1,3.1 Dimensions
The diameter and allowable deviation of cold drawn bars and cold drawn polished bars shall conform to the provisions of Table 3. Table 3
3. 0~~7. 0
>7. 0~10. 0
>10, 0 -18. 0
>18. 0~30. 0
1.3.2 Shape
Drawn bars
Allowable deviation
1.3.2.1 The ovality of cold drawn bars and cold drawn polished bars shall not exceed half of the diameter tolerance. Difference
Higher precision
+ 0: 005
Cold drawn polished bars
1.3.2.2 The delivery length of cold drawn bars and cold drawn polished bars is usually 1~3m+bars with a length not less than 0.3m and a weight not exceeding 10% of the weight of the batch are allowed to be submitted.
1.3.2.3 The curvature of cold drawn bars and cold drawn polished bars with a diameter not less than 6mm shall not exceed 3mm per meter. 1.3.3 Rectangular cross-section cold drawn bars can be supplied upon agreement between the supplier and the buyer. 1.4 Hot rolled (forged) bars
1. 4.1 Dimensions
GB/T15006-94
The dimensions and allowable deviations of hot rolled (forged) bars shall comply with the provisions of Table 4. Table 4
Hot-rolled (defective) round materials
Nominal size
Allowable deviation
10. 0~-14, 0
≥14. 0~20. 0
>20.0~-25.0
>25. 0~50. 0
>50.0~100,0
1.4. 2 Appearance
Nominal size
4. 0~-7. 0
≥7. 0~ 10. 0
21.0~13.0
Hot-rolled round materials
Allowable deviation of width
Allowable deviation
1.4.2.1 Hot-rolled round materials with a diameter of 6~9mm shall be delivered in coils. If the purchaser requires delivery in straight bars, it shall be noted in the contract. Hot-rolled (forged) materials of other sizes and shapes shall be delivered in straight bars. 1.4.2.2 The curvature of hot-rolled (forged) materials delivered in straight bars shall not exceed 6m per meter. 2 Surface quality
2.1 Cold-rolled strip
2.1.1 The surface of cold-rolled strip shall be smooth. Cracks, delamination, peeling, spots and rust are not allowed. Minor scratches, individual pits, roller marks and other defects that do not affect use are allowed. 2.1.2 Softened cold-rolled strips are allowed to have oxidation color. 2.2 Cold drawn wire
The surface of cold drawn wire should be smooth, without cracks, folds, peeling and thorns. Minor scratches, marks, individual pits and other defects that do not affect the use are allowed. Residual lubricant is allowed on the surface of cold drawn wire. 2.3 Cold drawn bar and cold drawn polished bar
The surface of cold drawn bar should be smooth, without cracks, folds, peeling and scars. Minor scratches and pits, pits and straightening marks with a depth not exceeding half of the diameter tolerance are allowed on the surface of cold drawn ladder. Residual lubricant is allowed on the surface of cold drawn bar. The surface of cold drawn polished material should be bright, without any defects. 2.4 Hot shoe (plated) material
The surface of hot rolled (forged) material shall not have folds, cracks, depressions, ears and other defects that affect the use. The defects on the surface can be cleaned, but the diameter (or thickness) after removal shall not be less than the nominal diameter (or thickness) specified in Table 4. 3 Test method
The sampling location and test method of the alloy material inspection items shall comply with the provisions of Table 5. R+
Test items
Surface quality
Chemical analysis
Frequency coefficient:
Longitudinal vibration wave transmission speed
Mechanical quality factor-,
Tensile test
Vickers hardness
Cup test
Rotation test
Winding test
4 Inspection rules
General mother tool
Naked eye
GB/T 15006—94
Test method
GB 223—81.82
See Appendix A (Supplement) A. 1
See A.2 in Appendix A (Supplement) 2
See A.3 in Appendix A (Supplement) 3
GB 228—76
GH3076—82
YB53 64
YR38—64
GB 238--82
GR239——82
YB 37:65
4.1 Inspection and Acceptance
The inspection and acceptance of alloy materials shall be carried out by the supplier's technical supervision department. 4.2 Batch Rules
Sampling Location
Ingot or Finished Product
Any Location on Finished Product
Any Location on Finished Product
Any Location on Finished Product
Any Location on Finished Product
Any Location on Finished Product
Any Location on Finished Product
Any Location on Finished Product|| tt||Finished product 1: Any part
Any part on finished product
Number of samples
1 piece per furnace
2 pieces per batch
2 pieces per batch
2 pieces per batch
2 pieces per batch
2 pieces per batch
2 pieces per batch
2 pieces per batch
2 pieces per batch
2 pieces per batch
2 pieces per batch
Alloy materials shall be submitted for inspection and acceptance in batches. Each batch shall consist of alloy materials of the same grade, furnace number, shape, size, accuracy grade and state.
4.3 Sampling quantity
The sampling quantity of alloy material inspection items shall comply with the provisions of Table 5. 4.4 Re-inspection and judgment rules
4.4.1 If the physical and mechanical properties of the alloy material after aging heat treatment are unqualified, it is allowed to re-sample and re-inspect after changing the aging heat treatment system. The qualified ones will be delivered. The aging heat treatment system of the samples of all inspection items should be the same. 4.4.2 If the initial inspection results of the mechanical properties and process properties of the alloy material in the delivery state are unqualified, it is allowed to take double the number of samples for re-inspection of the unqualified items. If even one sample is unqualified in the re-inspection results, the batch of alloy materials will not be accepted. The supplier is allowed to inspect each (coil, disk) one by one. Only qualified ones can be delivered.
4.4.3 If the initial inspection results of the chemical composition of the alloy are unqualified, the supplier can re-sample the steel ingot (bar) for re-inspection. If the re-inspection is unqualified, the quality should be judged.
When there is doubt about the surface quality, the cold-drawn samples and cold-drawn polished samples can be observed with a magnifying glass of no more than 5 cycles; hot-rolled (forged) materials are allowed to be inspected after pickling.
Diameter is 8~10mmn Cold drawn bars and cold drawn polished samples are allowed to be processed into samples with a diameter less than 8mm for measurement. *US
Length ratio: Strip material is measured at 5jo. Bar material is measured at 3; + Wire material has a specified gauge length of 50m1m. A.1 Measurement of frequency temperature coefficient
GB.T 15006.- 94
Appendix A
Physical property test methods
(Supplement)
A, 1.1 The co-embedded fundamental frequency of the alloy sample shall be measured in accordance with GB1586-79 (Method for measuring Young's modulus of metallic materials), and the signal source stability shall not be less than +1×106/d.
A.1.2 The frequency temperature coefficient is calculated in two sections: high temperature and low temperature. The frequency temperature coefficient calculation formula is: f-fa
Where: β,——frequency temperature coefficient, 1/℃te room temperature, 20=5℃
1——final measurement temperature, t
——resonance fundamental frequency of the sample at room temperature, Hzt
fo (tr-to)
f--The fundamental frequency of the resonance of the sample at the final measurement temperature (tt), I1z. A.1.3 Measurement procedure: measure the high temperature section first, then measure the low temperature section: after the furnace rises (drops) to the predetermined temperature, it must be kept warm for 30 minutes before measuring again.
A.1.4 The heating (cooling) equipment should keep the sample constant temperature, and the temperature difference in the constant temperature zone should not exceed 5°C. A.1.5 The temperature measurement accuracy should not be less than 1°C.
A,1.6 The frequency temperature coefficient value is rounded to significant figures. A.1.7 The sample size should refer to the relevant provisions of GB158679. A,2 Measurement of longitudinal vibration propagation velocity
A.2.1 Use the magnetostrictive method to measure the fundamental frequency of longitudinal vibration of the sample (kHz), and calculate the longitudinal vibration propagation velocity Vm/s
V = according to the measured fundamental frequency of longitudinal vibration resonance according to formula (A2)i 2Rf!
where: R—specimen size correction factor
1——specimen length, mm. The calculated value of the longitudinal wave propagation velocity is rounded to the significant figures. A2.2 The size correction factor of the rod-shaped specimen is calculated according to formula (A3): R=[1 +0.12633()]
where: d—specimen point diameter, mm,
specimen length, mm. The size correction factor of the strip-shaped specimen is calculated according to formula (A4): 2ah2+h2
R = (1 +0.08422
Where: 6—
- sample width, mm
h sample thickness, mm
- sample length, mm.
A.2.3 The bias magnetic field strength used when measuring the fundamental frequency of the resonance of the mouse sample shall be determined by the agreement between the supplier and the buyer. A.2.4 The longitudinal vibration wave propagation velocity test sample shall comply with the provisions of the following table. (A2)
Sample shape
A.3 Mechanical quality factor measurement
GB/T 15006—94
Hundred diameter or thick
(1.5~3,5) ×b*
Sample length change
35 ± 0. 1
End and axis degree
A.3.1 Use the peak width method to determine and calculate the mechanical quality factor Q value of the sample. According to GB1586-79, determine its fundamental frequency f and the frequency corresponding to the power point, and ensure that they belong to the same resonance curve. A.3.2 The hanging point is 0.210f～0.2151, "is the length of the sample. A.3.3
Kaiji quality factor (A5) calculation: Q
Mechanical quality factor:
The fundamental frequency of the resonance of the sample at room temperature, Hz5
—The lower limit frequency corresponding to the amplitude of 0.707 times its service amplitude, Hz——The upper limit frequency corresponding to the amplitude of 0.707 times the resonance amplitude, Hz. The mechanical quality factor takes two significant figures. A.3.4 The size of the sample should refer to the provisions of GB 586-79. b is the width change, which should be less than 5 mm.
(A5)
CB/T 15006—94
Appendix B
Recommended aging heat treatment system for elastic alloys
(reference)
B.1 The recommended aging heat treatment system for elastic alloys is shown in the table below. Alloy grade
Additional instructions:
Product shape
Delivery statebZxz.net
Hot rolling or hot forging
This standard is proposed by the Ministry of Metallurgical Industry of the People's Republic of China. This standard is drafted by Shanghai Iron and Steel Research Institute. The main drafter of this standard is Feng Yinglei.
*Consolidation treatment is required before aging heat treatment, 950~980r, insulation for 15min, water rate. *"Applicable to frequency components.
Aging heat treatment system
Heating temperature
600~700
650~750
600~700
650-750
650~750*
450~550
480~530
500~E50**
Hot-keeping time2 If the initial inspection results of the mechanical properties and process properties of the alloy materials in the delivery state are unqualified, it is allowed to take double the number of samples for re-inspection of the unqualified items. If even one sample fails in the re-inspection results, the batch of alloy materials will not be accepted. The supplier is allowed to inspect each (coil, disk) one by one. Only qualified ones can be delivered.
4.4.3 If the initial inspection results of the chemical composition of the alloy are unqualified, the supplier can re-sample the ingot (bad) for re-inspection. If the re-inspection fails, the degree should be determined.
When there is doubt about the surface quality, the cold-drawn samples and cold-drawn polished samples can be observed with a magnifying glass of no more than 5 cycles; hot-rolled (forged) materials are allowed to be checked after pickling.
Diameter 8~10mmn Cold-drawn bars and cold-drawn polished samples are allowed to be processed into samples with a diameter of less than 8mm for measurement. *US
Elongation: Strip material is measured at 5jo. Bar material is measured at 3; + The specified gauge length of wire is 50m1m. A.1 Measurement of frequency temperature coefficient
GB.T 15006.- 94
Appendix A
Physical property test methods
(Supplement)
A, 1.1 The co-embedded fundamental frequency of the alloy sample shall be measured in accordance with GB1586-79 (Method for measuring Young's modulus of metallic materials), and the signal source stability shall not be less than +1×106/d.
A.1.2 The frequency temperature coefficient is calculated in two sections: high temperature and low temperature. The frequency temperature coefficient calculation formula is: f-fa
Where: β,——frequency temperature coefficient, 1/℃te room temperature, 20=5℃
1——final measurement temperature, t
——resonance fundamental frequency of the sample at room temperature, Hzt
fo (tr-to)
f--The fundamental frequency of the resonance of the sample at the final measurement temperature (tt), I1z. A.1.3 Measurement procedure: measure the high temperature section first, then measure the low temperature section: after the furnace rises (drops) to the predetermined temperature, it must be kept warm for 30 minutes before measuring again.
A.1.4 The heating (cooling) equipment should keep the sample constant temperature, and the temperature difference in the constant temperature zone should not exceed 5°C. A.1.5 The temperature measurement accuracy should not be less than 1°C.
A,1.6 The frequency temperature coefficient value is rounded to significant figures. A.1.7 The sample size should refer to the relevant provisions of GB158679. A,2 Measurement of longitudinal vibration propagation velocity
A.2.1 Use the magnetostrictive method to measure the fundamental frequency of longitudinal vibration of the sample (kHz), and calculate the longitudinal vibration propagation velocity Vm/s
V = according to the measured fundamental frequency of longitudinal vibration resonance according to formula (A2)i 2Rf!
where: R—specimen size correction factor
1——specimen length, mm. The calculated value of the longitudinal wave propagation velocity is rounded to the significant figures. A2.2 The size correction factor of the rod-shaped specimen is calculated according to formula (A3): R=[1 +0.12633()]
where: d—specimen point diameter, mm,
specimen length, mm. The size correction factor of the strip-shaped specimen is calculated according to formula (A4): 2ah2+h2
R = (1 +0.08422
Where: 6—
- sample width, mm
h sample thickness, mm
- sample length, mm.
A.2.3 The bias magnetic field strength used when measuring the fundamental frequency of the resonance of the mouse sample shall be determined by the agreement between the supplier and the buyer. A.2.4 The longitudinal vibration wave propagation velocity test sample shall comply with the provisions of the following table. (A2)
Sample shape
A.3 Mechanical quality factor measurement
GB/T 15006—94
Hundred diameter or thick
(1.5~3,5) ×b*
Sample length change
35 ± 0. 1
End and axis degree
A.3.1 Use the peak width method to determine and calculate the mechanical quality factor Q value of the sample. According to GB1586-79, determine its fundamental frequency f and the frequency corresponding to the power point, and ensure that they belong to the same resonance curve. A.3.2 The hanging point is 0.210f～0.2151, "is the length of the sample. A.3.3
Kaiji quality factor (A5) calculation: Q
Mechanical quality factor:
The fundamental frequency of the resonance of the sample at room temperature, Hz5
—The lower limit frequency corresponding to the amplitude of 0.707 times its service amplitude, Hz——The upper limit frequency corresponding to the amplitude of 0.707 times the resonance amplitude, Hz. The mechanical quality factor takes two significant figures. A.3.4 The size of the sample should refer to the provisions of GB 586-79. b is the width change, which should be less than 5 mm.
(A5)
CB/T 15006—94
Appendix B
Recommended aging heat treatment system for elastic alloys
(reference)
B.1 The recommended aging heat treatment system for elastic alloys is shown in the table below. Alloy grade
Additional instructions:
Product shape
Delivery state
Hot rolling or hot forging
This standard is proposed by the Ministry of Metallurgical Industry of the People's Republic of China. This standard is drafted by Shanghai Iron and Steel Research Institute. The main drafter of this standard is Feng Yinglei.
*Consolidation treatment is required before aging heat treatment, 950~980r, insulation for 15min, water rate. *"Applicable to frequency components.
Aging heat treatment system
Heating temperature
600~700
650~750
600~700
650-750
650~750*
450~550
480~530
500~E50**
Hot-keeping time2 If the initial inspection results of the mechanical properties and process properties of the alloy materials in the delivery state are unqualified, it is allowed to take double the number of samples for re-inspection of the unqualified items. If even one sample fails in the re-inspection results, the batch of alloy materials will not be accepted. The supplier is allowed to inspect each (coil, disk) one by one. Only qualified ones can be delivered.
4.4.3 If the initial inspection results of the chemical composition of the alloy are unqualified, the supplier can re-sample the ingot (bad) for re-inspection. If the re-inspection fails, the degree should be determined.
When there is doubt about the surface quality, the cold-drawn samples and cold-drawn polished samples can be observed with a magnifying glass of no more than 5 cycles; hot-rolled (forged) materials are allowed to be checked after pickling.
Diameter 8~10mmn Cold-drawn bars and cold-drawn polished samples are allowed to be processed into samples with a diameter of less than 8mm for measurement. *US
Elongation: Strip material is measured at 5jo. Bar material is measured at 3; + The specified gauge length of wire is 50m1m. A.1 Measurement of frequency temperature coefficient
GB.T 15006.- 94
Appendix A
Physical property test methods
(Supplement)
A, 1.1 The co-embedded fundamental frequency of the alloy sample shall be measured in accordance with GB1586-79 (Method for measuring Young's modulus of metallic materials), and the signal source stability shall not be less than +1×106/d.
A.1.2 The frequency temperature coefficient is calculated in two sections: high temperature and low temperature. The frequency temperature coefficient calculation formula is: f-fa
Where: β,——frequency temperature coefficient, 1/℃te room temperature, 20=5℃
1——final measurement temperature, t
——resonance fundamental frequency of the sample at room temperature, Hzt
fo (tr-to)
f--The fundamental frequency of the resonance of the sample at the final measurement temperature (tt), I1z. A.1.3 Measurement procedure: measure the high temperature section first, then measure the low temperature section: after the furnace rises (drops) to the predetermined temperature, it must be kept warm for 30 minutes before measuring again.
A.1.4 The heating (cooling) equipment should keep the sample constant temperature, and the temperature difference in the constant temperature zone should not exceed 5°C. A.1.5 The temperature measurement accuracy should not be less than 1°C.
A,1.6 The frequency temperature coefficient value is rounded to significant figures. A.1.7 The sample size should refer to the relevant provisions of GB158679. A,2 Measurement of longitudinal vibration propagation velocity
A.2.1 Use the magnetostrictive method to measure the fundamental frequency of longitudinal vibration of the sample (kHz), and calculate the longitudinal vibration propagation velocity Vm/s
V = according to the measured fundamental frequency of longitudinal vibration resonance according to formula (A2)i 2Rf!
where: R—specimen size correction factor
1——specimen length, mm. The calculated value of the longitudinal wave propagation velocity is rounded to the significant figures. A2.2 The size correction factor of the rod-shaped specimen is calculated according to formula (A3): R=[1 +0.12633()]
where: d—specimen point diameter, mm,
specimen length, mm. The size correction factor of the strip-shaped specimen is calculated according to formula (A4): 2ah2+h2
R = (1 +0.08422
Where: 6—
- sample width, mm
h sample thickness, mm
- sample length, mm.
A.2.3 The bias magnetic field strength used when measuring the fundamental frequency of the resonance of the mouse sample shall be determined by the agreement between the supplier and the buyer. A.2.4 The longitudinal vibration wave propagation velocity test sample shall comply with the provisions of the following table. (A2)
Sample shape
A.3 Mechanical quality factor measurement
GB/T 15006—94
Hundred diameter or thick
(1.5~3,5) ×b*
Sample length change
35 ± 0. 1
End and axis degree
A.3.1 Use the peak width method to determine and calculate the mechanical quality factor Q value of the sample. According to GB1586-79, determine its fundamental frequency f and the frequency corresponding to the power point, and ensure that they belong to the same resonance curve. A.3.2 The hanging point is 0.210f～0.2151, "is the length of the sample. A.3.3
Kaiji quality factor (A5) calculation: Q
Mechanical quality factor:
The fundamental frequency of the resonance of the sample at room temperature, Hz5
—The lower limit frequency corresponding to the amplitude of 0.707 times its service amplitude, Hz——The upper limit frequency corresponding to the amplitude of 0.707 times the resonance amplitude, Hz. The mechanical quality factor takes two significant figures. A.3.4 The size of the sample should refer to the provisions of GB 586-79. b is the width change, which should be less than 5 mm.
(A5)
CB/T 15006—94
Appendix B
Recommended aging heat treatment system for elastic alloys
(reference)
B.1 The recommended aging heat treatment system for elastic alloys is shown in the table below. Alloy grade
Additional instructions:
Product shape
Delivery state
Hot rolling or hot forging
This standard is proposed by the Ministry of Metallurgical Industry of the People's Republic of China. This standard is drafted by Shanghai Iron and Steel Research Institute. The main drafter of this standard is Feng Yinglei.
*Consolidation treatment is required before aging heat treatment, 950~980r, insulation for 15min, water rate. *"Applicable to frequency components.
Aging heat treatment system
Heating temperature
600~700
650~750
600~700
650-750
650~750*
450~550
480~530
500~E50**
Hot-keeping time4 The longitudinal wave propagation velocity test specimen shall comply with the provisions of the following table. (A2)
Specimen shape
A.3 Mechanical quality factor measurement
GB/T 15006—94
100 diameter or thickness
(1.5~3,5) ×b*
Specimen length change
35 ± 0. 1
End and axis angle
A.3.1 Calculate the mechanical quality factor Q value of the specimen by the peak width method. Determine its fundamental frequency f according to GB1586-79 and the frequency corresponding to the power point, and ensure that they belong to the same resonance curve. A.3.2 The hanging point is 0.210f～0.2151, "is the length of the sample. A.3.3
Kaiji quality factor (A5) calculation: Q
Mechanical quality factor:
The fundamental frequency of the resonance of the sample at room temperature, Hz5
—The lower limit frequency corresponding to the amplitude of 0.707 times its service amplitude, Hz——The upper limit frequency corresponding to the amplitude of 0.707 times the resonance amplitude, Hz. The mechanical quality factor takes two significant figures. A.3.4 The size of the sample should refer to the provisions of GB 586-79. b is the width change, which should be less than 5 mm.
(A5)
CB/T 15006—94
Appendix B
Recommended aging heat treatment system for elastic alloys
(reference)
B.1 The recommended aging heat treatment system for elastic alloys is shown in the table below. Alloy grade
Additional instructions:
Product shape
Delivery state
Hot rolling or hot forging
This standard is proposed by the Ministry of Metallurgical Industry of the People's Republic of China. This standard is drafted by Shanghai Iron and Steel Research Institute. The main drafter of this standard is Feng Yinglei.
*Consolidation treatment is required before aging heat treatment, 950~980r, insulation for 15min, water rate. *"Applicable to frequency components.
Aging heat treatment system
Heating temperature
600~700
650~750
600~700
650-750
650~750*
450~550
480~530
500~E50**
Hot-keeping time4 The longitudinal wave propagation velocity test specimen shall comply with the provisions of the following table. (A2)
Specimen shape
A.3 Mechanical quality factor measurement
GB/T 15006—94
100 diameter or thickness
(1.5~3,5) ×b*
Specimen length change
35 ± 0. 1
End and axis angle
A.3.1 Calculate the mechanical quality factor Q value of the specimen by the peak width method. Determine its fundamental frequency f according to GB1586-79 and the frequency corresponding to the power point, and ensure that they belong to the same resonance curve. A.3.2 The hanging point is 0.210f～0.2151, "is the length of the sample. A.3.3
Kaiji quality factor (A5) calculation: Q
Mechanical quality factor:
The fundamental frequency of the resonance of the sample at room temperature, Hz5
—The lower limit frequency corresponding to the amplitude of 0.707 times its service amplitude, Hz——The upper limit frequency corresponding to the amplitude of 0.707 times the resonance amplitude, Hz. The mechanical quality factor takes two significant figures. A.3.4 The size of the sample should refer to the provisions of GB 586-79. b is the width change, which should be less than 5 mm.
(A5)
CB/T 15006—94
Appendix B
Recommended aging heat treatment system for elastic alloys
(reference)
B.1 The recommended aging heat treatment system for elastic alloys is shown in the table below. Alloy grade
Additional instructions:
Product shape
Delivery state
Hot rolling or hot forging
This standard is proposed by the Ministry of Metallurgical Industry of the People's Republic of China. This standard is drafted by Shanghai Iron and Steel Research Institute. The main drafter of this standard is Feng Yinglei.
*Consolidation treatment is required before aging heat treatment, 950~980r, insulation for 15min, water rate. *"Applicable to frequency components.
Aging heat treatment system
Heating temperature
600~700
650~750
600~700
650-750
650~750*
450~550
480~530
500~E50**
Hot-keeping time
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