GB/T 13148-1991 Technical requirements for welding of stainless steel composite plates
Some standard content:
UDC 621. 791 + 669. 14. 018. 8-413U 05
National Standard of the People's Republic of China
GB/T 13148—91
Specification for welding of stainless steel clad steel plate1991-08-23Promulgated
State Administration of Technical Supervision
1992-05-01Implementation
W.National Standard of the People's Republic of China
Specification for weldiag of stainless steel clad steel plate1Subject content and scope of application
GB/T 13148—91
This standard specifies the technical requirements for materials, welders, pre-welding preparation, welding process, welding quality inspection and welding defect repair when welding stainless steel composite steel plates.
This standard is applicable to the welding of stainless composite steel plates with a total thickness of 4 mm or more, which are made of various stainless steels as composite materials and low-carbon structural or low-alloy structural steels as base materials.
2 Reference standards
Steel pressure penetrators
Stainless steel welding rods
GB1300
GB 2611F
GB2651
GB2653
GB 3323
GB 4191
GI3 4241
GB 4334
Steel wire for welding
Methods for sampling for mechanical property test of welded joints-Tensile test method for welded joints
Test methods for bending and flattening of welded joints
Line photography and quality classification of welded butt joints of steel-welded steel-wire shielded arc welding and plasma welding, cutting of tungsten electrodes for welding of old stainless steel strips
Test methods for corrosion resistance of stainless steel
GH 4842
GB E117
GB 5118
GH 5293
GB 6052
GB 6396
GB8165
Carbon steel welding rod
Low alloy steel welding rod
Magnetic steel arc welding flux
1. Liquid carbon dioxide
Test method for properties of composite steel plate
Stainless steel composite steel plate
ZB JQ4 005
JB1152
JB3964
Diagnostic flaw detection method
Ultrasonic flaw detection of butt welds of boilers and steel pressure vesselsWelding procedure assessment of pressure vessels
Magnetic particle flaw detection of steel pressure vessels
3 Terminology
3.1 Oversplash layer
In the welded joint of stainless steel composite steel plate, it is the weld layer located at the junction of the base material and the composite material, and connects the two and their welds into one. Approved by the State Bureau of Technical Supervision on August 23, 1991 and implemented on May 1, 1992
W.4 Materials
GB/T 13148—91
4.1 Stainless steel composite plates and their supporting welding materials must have a factory quality certificate. If necessary, they should be retrospectively re-inspected according to relevant standards.
4.2 The quality of stainless steel composite plates shall comply with the provisions of GH8165 or the agreement between the supply and demand parties. 4.3 The stove rods used shall comply with the provisions of GB983 and GB5117 (R5118 respectively. 4.4 The welding wires shall comply with the provisions of GB1300 and GB 4241 respectively. 4.5 The flux used shall comply with the provisions of GB5293 or other relevant standards. 4.6 The hydrogen used shall comply with the provisions of GB4842, and the carbon dioxide used shall comply with the provisions of Class 1 and Class II in GR6052. 4.7 When welding with the fox welding method, it is recommended to use tungsten electrodes, and their quality shall comply with the provisions of G134191. 5 Welders
5. 1 The welder shall undergo necessary technical training and pass the examination. 5.2 Welding! The examination rules can be implemented according to the technical requirements of the product and the original Ministry of Labor and Personnel "Boiler Pressure Penetrator Yegong. Examination Rules\ Execution: or the welder of the construction unit will test the committee and the meeting to set it by himself, and obtain the approval of the relevant quality supervision department. 5.3 The welding of bacteria on the weld shall be consistent with the items approved by his qualification certificate. 5.4 Welding must strictly comply with the welding process regulations. 6 Preparation before welding
6.1 Cutting
Cutting should be done by mechanical processing methods. Plasma arc cutting, oxygen flux cutting, gas cutting (cutting from the surface of the substrate) and other methods can also be used for cutting. However, when using these methods for cutting, appropriate processing allowances should be left. 6. 2 Joint type
Welded joints are mainly of two types: butt joint and fillet joint. 6.3 Bevel type, size and processing
6.3.1 For the bevel type and size of butt joint and fillet joint, please refer to Figures 1 and 2.2
W Sealed joint No. 1
Liu joint No. 4
Butt joint No. 5
Note: The dimensions in brackets are for buried spot welding, GB/T13148-91
Butt joint No. 2
Butt joint No. 5
Figure 1 Bevel type and size of butt joint for butt welding
W Year
GB/T 13148---91
2 Commonly used Amber welding groove types and sizes Small welding No. 3
Use welding No. 6
6.3.2 Welding grooves should be made by mechanical processing methods. If the groove is made by plasma arc cutting, gas cutting, etc., the oxide layer and overheating layer on the surface of the composite groove must be removed: the groove surface should be smooth and clean. 6.4 Cleaning before welding
Before welding, mechanical methods and organic solvents (such as propylene glycol, alcohol, banana oil, etc.) should be used to clean the surface of the welding wire and the welding groove I on both sides of the welding groove by at least 20mm. Oil stains, calcium traces, metal rust, oxide film and other contaminants in the surrounding area. When welding multiple layers and multiple passes, the molten liquid and defects on the surface of the previous weld must be removed.
6.5 Welding Matching
The assembly of stainless steel composite steel plate weldments with the same thickness (the thickness of the base material and the composite material are the same) should be based on the surface of the other material. The misalignment shall not be greater than half of the thickness of the composite material and shall not exceed 2mm. The assembly benchmark of stainless steel composite steel plate weldments with different degrees (or different composite material thickness, or different benzene thickness, or both different) shall be implemented in accordance with the provisions of the design drawings. 7 Welding
7.1 Welding Method
For welding of base materials, manual arc welding, submerged arc welding and carbon dioxide gas shielded welding are recommended. For welding of composite materials and transition layers, pigeon plate hydrogen fox welding and center grab welding are recommended. Other welding methods that can ensure welding quality can also be used. 7.2 Welding equipment
Welding equipment shall meet the requirements of welding process and comply with the provisions of relevant design standards. 7.3 Selection of welding materials
7.3.1 The selected welding materials such as bars, welding wires, and flux shall comply with the provisions of 1.3 to 4.5 and the design drawings.
7.3.2 For the selection of welding materials for strips, refer to Table 1. Other welding materials that can ensure the performance of the joints are allowed. 7.3.3 For other stainless steel composite plates not listed in Table 1, the selection of transition layer welding materials shall be based on the material feeding principle of dissimilar steel welding to ensure good metallurgical bonding and metallographic structure that meet the requirements between the composite material and the base material and its welding chain. 7.4 Welding process assessment
GB/T 13148--91
7.4.1 When the technical conditions of the product require welding process assessment, the welding process assessment must be carried out before the start of work. 7.4.2 The welding process assessment method shall be formulated by the construction unit according to the product structure characteristics and technical requirements, and approved by the relevant quality supervision department.
7.4.3 The test items and sample numbers of welding process assessment are shown in Table 2. The sampling method can refer to (H2649 and (R6396). The qualified standard shall comply with 7.4.4~7.1 when there is no clear provision for product design samples and technical conditions.6. Table 1 Stainless steel composite steel plate welding material selection table mother bZxz.net
steel B,
A3A3F20B0g
20 R 22 # 3C
16Mn6MnR
1e Mng
5Mny15MnVR
1i MnVN
15 CeM 16MnNb | ||JC.18Nii2Moz1
QCrIRNit2M3Ti
00E1N42
G0Cr19Ni13M03
AI(B,--B,)
4 -- [B, -B,]
Manual arc welding electrodes
HoSHnA
Ho8MnA
H10Mn2
Es003F5016
GBE5501G
GR F55 15-G
GBF55 16-G
E0-1S-10-15
F0-19-10-16
Eu-19-J0 Nh-15
Kr-19-10 Nb-16
E00 19.10-15
EL-19-10-16
F3-18-12Mn2-15
E0-18-12Mo2-16
E0-19-13Mo3-16||E0-18 J2M2Nb-
F0n-18-12M2-16|| tt||E00 23--J3Mo2-16
F:1-23-13-15
E1-23-1316
E2-26-21-15
E2-26-21-16
F1-23-13Mo2-16
E1-26-2IM02-16||tt| |E2-26-21-15
K2-26 21 16
Gas for shielded welding
HI 431 H08Mu125i
S 101 HeAMn2SiA.
H08Mn2SiA S. 10i
IH08Mn2MoA SJ 30E
SJ 501
Ho&Mn25iA
HO8MnMuA
HloMnSi
HoCr14
HOC-20N10T
HoC.20Ni10N
HCt21Ni10
Hr19Ni12Mn 2
HoCr20Ni14Mo3
JH00C 119Ni12M02
HiCr24N13
Hoc126Ni2!
HiC-2.1Ni13Mo2
Aike and
Each village in the same
or separate
absolute specification list
material required shear
can be made into
total friction
specified test items
GB/T 13148-91
Welding procedure qualification test items and number of test specimens Additional test items
Base material joint
Head impact
Notch located in weld and heat
affected zone 3
Bean material weld
Composition analysis
Defective
Contains
Austin stainless steel welding
Metallic
Additional test items shall be determined by agreement between the supplier and the supplier. 7.4.4 When the composite material does not participate in the strength design of the composite steel plate, the tensile strength of the butt joint shall not be lower than the lower limit of the tensile strength of the base steel specified in the standard: When the composite material participates in the strength design of the composite steel plate, it shall not be lower than the calculated value of the following formula: t + ota
武中; 一
Tensile strength of butt joint, MPa;
Lower limit of tensile strength of base material specified in standard, MPa: Lower limit of tensile strength of composite material specified in standard, MPa,,\. 一Nominal thickness of base material, mm;
Nominal thickness of composite material, mm,
7.4.5 The bending angle of butt joint at room temperature (bending axis diameter is 3t, support distance is 5.2t, t is specimen thickness) shall comply with the provisions of Table 3 or the agreement between supply and demand parties,
Inner curvature
Outer curvature
Table 3 Temperature bending angle of butt joint of stainless steel composite steel plate
Br/A~As
B:B,/A
Bending angle, (°)
7.4.6 The qualified standard of additional test items shall be determined by negotiation between supply and demand parties. :150
B--B./A,~A
7.5 Welding Procedures
Before welding, a reasonable welding procedure should be formulated according to the structural characteristics, technical requirements and qualified welding procedures of the product. Welding construction must strictly comply with the welding procedure. 7.6 Welding Procedures
The welding process parameters of the product can be determined by the construction unit according to the specific conditions of the weld, technical requirements, welding methods and parameters of welding process assessment. In principle, a smaller welding line energy should be used to minimize overheating of the weldment. 7.7 Positioning Welding
Positioning welding should be carried out on the base material and should be carried out by a certified welder. The spacing and length can be determined by the specific conditions of the weldment. If cracks or other defects that are not allowed to exist are found in the positioning weld, they should be removed and re-welded. 7.8 Welding procedure: 7.8.1 Generally, the base material should be welded first, and after the root cleaning and the specified quality inspection items are passed, the transition layer should be welded, and finally the composite material should be welded. 7.8.2 If it is not possible to weld according to the procedure in 7.8.1, the composite material can be welded first, then the transition layer, and finally the base material. However, in this case, the base material must be welded with the same austenitic electrode or wire as the transition layer; it can also be welded with carbon steel or low alloy steel electrode (or wire) after the pure iron body WGB/T13148-91
transition (the transition speed should be greater than or equal to 5rtr) on the austenitic oversplash layer. 7.9 Welding of the base material When welding the base material, its flash channel shall not reach and melt the composite material. When welding the base material first, the root or surface of the flash channel should be 12IT away from the composite interface. The weld excess height should meet the requirements of relevant standards. Depending on the material quality, steel type and structure, appropriate preheating measures may be taken when necessary.
7.10 Welding of transition layer
When welding the transition layer, the amount of base metal melted in should be reduced as much as possible while ensuring good fusion, that is, the fusion ratio should be reduced. For this purpose, smaller diameter welding rods or welding wires and smaller connection energy should be used. The thickness of the transition layer should not be less than 2mm. 7.11 Welding of composite materials
The surface of the short material seam should be kept as smooth and smooth as possible with the composite surface. The excess height of the butt weld should not be greater than 1.mm. The convexity and leg height of the transfer weld should comply with the requirements of the design drawings. For austenitic stainless steel, the interlayer temperature should be above 1°C and the smallest baking energy should be used as much as possible.
7.12 Product welding test plate
When the product technical conditions require it, the product welding test plate should be welded. The process conditions of the product welding test plate should be the same as those of the product. The welding agent should be welded synchronously with the product by the welding of the product. The welding quality, inspection items and qualified standards of the product welding test plate should comply with the product design technical requirements or other relevant regulations. 13 Post-weld heat treatment and welding residual stress elimination Post-weld heat treatment shall be carried out according to the design requirements. It is recommended to eliminate welding residual stress by mechanical force method. When heat treatment is used to eliminate welding residual stress, it is recommended to be carried out before the transition layer is welded. When the composite stainless steel has the tendency of intergranular corrosion, the heat treatment temperature should not exceed its tenderizing temperature.
7.14 Surface quality protection of composite materials
During the construction process, attention should be paid to protecting the surface quality of the composite materials. When rolling and rounding, the roller surface should be cleaned thoroughly; the composite surface should not be hit with a hammer: it is necessary to prevent welding spatter from damaging the composite surface; arcing, welding card, hanging and temporary brackets should not be left on the composite surface.
7.15 Post-weld cleaning
After welding, the weld slag, weld nodules, spatter and other dirt on the weld surface should be carefully cleaned. If necessary, the weld should be partially trimmed. 7.16 Welder's mark
After post-weld cleaning, a mark should be made on the obvious part near the base material weld (including the weld mark of the base material and the composite material). Check it later.
8 Welding quality inspection
8. 1 Inspectors
Welding quality inspectors should receive necessary technical training and correctly master the welding quality assessment standards and inspection methods of stainless steel composite plates. In particular, inspection personnel should have the corresponding qualifications recognized by the relevant departments. 8.2 Inspection Items
The welding quality inspection items of stainless steel composite plate structure generally include appearance inspection, nondestructive testing (including radiographic testing, color testing, ultrasonic testing, magnetic particle testing, etc.), mechanical properties test, pressure test, tightness test, inter-product corrosion test and metallographic inspection, etc. The inspection items of each product shall be implemented in accordance with the provisions of the product design drawings and technical conditions. 8.3 Process Inspection
After the welding and related processes are completed and passed the quality inspection, they can be transferred to the next process for construction. 8.4 Appearance Inspection
8.4.1 Appearance Inspection is carried out by visual inspection or 4-~10 times magnifying glass. The appearance inspection rate of the weld is 100%. 8.4.2 The geometric dimensions of the weld shape shall comply with the provisions of the design drawings. 7
WGB/T 13148—91
8.4.3 The weld and heat affected zone shall not have cracks, flash, lack of fusion, bite, arc resistance, slag inclusion and other defects exceeding the allowable limit. 8.4.4 When there is no clear provision in the product design drawings and technical conditions, the depth of the weld edge shall not exceed 10% of the plate thickness (composite base material). H, not more than 0.5 m. The continuous length of the edge shall not exceed 1011 mm, and the total length of the edge on both sides of the weld shall not exceed 10% of the length of the weld.
8.5 Non-radioactive
Radioscopic flaw detection shall be carried out in accordance with GI3323. Color flaw detection shall be carried out in accordance with ZBJ04005, only used to check the weld of composite materials. Ultrasonic flaw detection shall be carried out in accordance with FB1152, only used to check the base material. Magnetic particle inspection is carried out in accordance with B39165, and only the cracks of the materials are checked. The inspection scope and qualified standards of the above-mentioned non-destructive methods shall comply with the provisions of the design drawings and technical conditions, or with the provisions of the agreement between the supplier and the buyer. 8.6 Mechanical properties test
8.6.1 When the product technical conditions require the assessment of the welding process and the field requires the provision of the mechanical properties of the product welding test plate, this test shall be carried out.
8.6.2 Sampling and test methods for mechanical properties of welded joints shall refer to (GB2651, GB2653 and GB6396). 8.6.3 When the product design drawings and technical specifications do not have clear requirements, the mechanical properties test date and qualified standards of the joints shall comply with the provisions of 7.1.3-7.4.6.
8.7 Pressure test and tightness test
When the product design drawings and technical specifications have requirements, the specified pressure test and tightness test shall be carried out. The test method can be According to GB150.
8.8 Intergranular brain corrosion test
When there are intergranular corrosion tendency test requirements for composite stainless steel welded joints, GB4334 reverse test and assessment can be referred to. 8.9 Metallographic inspection
If there are requirements in the product design drawings and technical conditions, the welding process assessment and identification of the product welding test plate joint performance shall be carried out in time. If the quality inspection department deems it necessary, metallographic inspection shall be carried out in time, and it shall comply with the provisions of 7.4.3 and 7.4-6. 9 Welding defect repair
9.1 When When it is found that there are impermissible defects in the welded parts, the defects should be removed and repaired according to the relevant repair process requirements. 9.2 The number of times a defect is repaired in a part should not exceed two times. If it is still unqualified after two repairs, it is necessary to repair it, which must be approved by the chief technical officer of the construction unit. The repaired part, defect type and size, number of repairs and conditions, etc. should be recorded in the product quality control file. 9.3 For weldments that require post-weld heat treatment, the repair work should be carried out before the heat treatment; if it is carried out after the heat treatment, the original heat treatment requirements should be followed. The repaired parts should be heated again. 10 Welding construction environment and safety protection
The welding construction environment and safety protection can be implemented in accordance with GB150 and other relevant regulations. Additional notes,
This standard was proposed by China State Shipbuilding Corporation and was drafted by the National Ocean Shipping Standardization Technical Committee, Marine Material Application and Technology Sub-Technical Committee.
This standard was drafted by Jiyang Shipbuilding Research Institute of China State Shipbuilding Corporation. The main authors of this standard are Liu Kefei, Wu Pin, Cao Weixiang, and Xu Minglin. R
W3 For weldments that require post-weld heat treatment, rework should be performed before heat treatment; if it is performed after heat treatment, the reworked parts should be heat treated again according to the original heat treatment requirements. 10 Welding construction environment and safety protection
For welding construction environment and safety protection, please refer to GB150 and other relevant regulations. Additional notes,
This standard was proposed by China State Shipbuilding Corporation and was drafted by the National Technical Committee for Standardization of Ocean Shipping Materials Application and Technology Technical Committee.
This standard was drafted by Jiyang Shipbuilding Research Institute of China State Shipbuilding Corporation. The main authors of this standard are Liu Kefei, Wu Pin, Cao Weixiang, and Xu Minglin. R
W3 For weldments that require post-weld heat treatment, rework should be performed before heat treatment; if it is performed after heat treatment, the reworked parts should be heat treated again according to the original heat treatment requirements. 10 Welding construction environment and safety protection
For welding construction environment and safety protection, please refer to GB150 and other relevant regulations. Additional notes,
This standard was proposed by China State Shipbuilding Corporation and was drafted by the National Technical Committee for Standardization of Ocean Shipping Materials Application and Technology Technical Committee.
This standard was drafted by Jiyang Shipbuilding Research Institute of China State Shipbuilding Corporation. The main authors of this standard are Liu Kefei, Wu Pin, Cao Weixiang, and Xu Minglin. R
W
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