GB/T 13147-1991 Technical requirements for welding of copper and copper alloy composite steel plates
Some standard content:
tmc621.791：669.35+669.142-413uds
National Standard of the People's Republic of China
GB/T 1314791
Technical Conditions
The specification for welding of copperandcopperalloyclad steel platePublished on August 23, 1991
Implemented on May 1, 1992
Published by the State Administration of Technical Supervision
WNational Standard of the People's Republic of China
Technical Conditions
The specification for welding of copperAnd copper alloy clad steel plateSubject Content and Scope of Application
GB/T 13147-91
This standard specifies the technical requirements for welding copper and copper alloy composite steel plates (hereinafter referred to as composite steel plates), materials, welders, preparation before welding, welding quality inspection, and welding defect repair. This standard is applicable to the welding of steel composite plates with a total thickness of more than 8 mm, with the composite material being copper or steel alloy and the base material being pseudo-magnetic steel or low alloy steel. The welding of copper-steel composite plates not specified in this standard can also be referred to. Cited standards GB 150 GB 85 GB 13986 Basic types and dimensions of welds for gas welding, manual electric neck welding and gas shielded welding Basic types and dimensions of weld grooves for arc welding GP 1300 Test method for mechanical properties of welded joints GB 2649 Impact test method for welded joints GB 2650 GB 2651 Tension test method for welded joints GB 2653 GB 3120 G 3125 G 3323 GB 3670 GB 4191
G 484?
CB 5117
GB 5231
GB 5293
GE6032
[E 115?
JB 27:56
Test methods for bending and flattening of joints
Self-welding
Creation of fusion transfer welding and quality classification of copper alloy electrodes
Generated gas shielded arc welding and plasma welding, electrode chlorine gas for cutting
Carbon frying pan
Ao alloy screw
Processing of self-made chemical composition and product shape
Liu Gong and nickel Taiwan concept of chemical composition and production of super energy account carbon steel buried welding flux
Industrial liquid second end
River protection and production! Large container butt joint seam ultrasonic damage and copper miscellaneous welding wire
Positive force container Tan welding process plan
IB 3964
National Technical Supervision Reported on August 23, 1991, and implemented on May 1, 1992
W.CB1207 Copper and copper alloy composite steel plate
3 Terminology
GB/T 13147-91
3.1 Transition weld bead hiluring weld bead
To prevent the adverse effects of small base material components on the composite weld metal fan and to ensure the quality and performance of the joint, a metal layer of specified composition is melted in advance on the surface of the base weld metal.
3.2 Ferro dilution rate iztion) During welding, the base layer rust and the iron content of the over-layer weld are increased by 4.1. The copper-steel composite and its supporting welding materials used for welding must have a factory certificate of quality; and can only be used after manufacturing inspection and training.
4.2 The quality of the copper-steel composite coating shall comply with (312(7) and relevant standards or the provisions of the agreement between the supply and demand parties. 4.3 Welding materials
4.3. 1 Base welding materials
Carbon steel and low alloy steel welding materials shall be selected according to design drawings or special technical documents. The used baking rods, wires and flux shall comply with G321T, R5118.GB130, GE5293 and other relevant standards. 4.3.2 Composite welding materials
Composite welding materials shall be selected according to design drawings or special technical documents and shall comply with GB3125, GB3670, GB5234.JI3273 § and other relevant standards.
4.3.3 Filtering materials
Through-layer welding materials can be selected according to the composite and base materials according to Table 1, or according to the design drawings or special technical conditions. But it should comply with the provisions of GF3129, GB3870, GB5235, JE2736 and other relevant standards. 1Through-layer welding handle materials
Xiacun Science
Low-color low
Huai alloy|| 4.3.4 Welding process materials Aluminum alloy 4.3.4.1 Fluorine gas for welding shall comply with the provisions of B1842. 4.3.4.2 Fluorine gas for welding shall comply with the provisions of (GR6052). 4.3.4.3 Welding gas shall comply with the provisions of GB4191. 5 Welding materials N.e.N.) StCuAl 5.1 The welding test shall be conducted after strict technical training and passing the examination. Welding 1. The welding test shall refer to the "Boiler Welding Test Regulations" of the Ministry of Labor and Human Resources and the welding requirements of copper-steel plates in this specification. The welding test committee of the construction unit shall formulate the welding test requirements and obtain the approval of the relevant quality and supervision departments. WGB/T 13.147 — 91
5.2 Welders can only engage in welding of material groups, joint types, welding positions and welding methods permitted in the certification code. 6 Preparation before welding
6.1 Cutting
The material of the weldment can be cut by any method such as mechanical processing, plasma cutting, cutting, and welding. 6. 1. 1 Cutting [
Directly before the machine bed, the planing work is done by the cutting machine. 6.1.2 When plasma cutting
, pay attention to the composite layer facing up and the base layer facing down, starting from the composite layer. 6.1.3 When starting to cut
, the composite layer to be cut should be removed by mechanical methods (such as planing, cutting, etc.) first, and then the composite layer should face down, and flame cutting should be performed.
6.2 Processing of welding grooves
, the processing must be carried out by mechanical methods, and the surface after flame cutting should be removed. The finished groove can be checked with the naked eye or a low-profile magnifying glass, and it can also be checked with a mirror. The welded groove should not have defects such as grain, inclusions, burrs, and delamination of the base layer and composite lip. If there are any of the above defects: remove them before welding. 6.3 Joint type
The main joint types are butt joint and corner joint. 6.3.1 Butt joint
6.3.1.1 When welding steel composite plates, the general groove type and size are selected according to Table 2. Among them: 1~ groove type is suitable for welding the base layer first and welding the composite layer; 56 groove type is suitable for welding the composite layer first and welding the base layer (such as small diameter pipes can only weld the composite layer first and then the dry layer)
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W numberwww.bzxz.net
GH/T 13147-91
6.3.1.2 For other groove types and sizes used in the welding end of the base steel, they can be implemented according to GB985 and GB986 respectively according to the manual electric welding and buried arc welding processes. 6.3.2 Corner joint 6.3.2.1 The groove type and size of the copper-steel composite plate corner joint shall be selected according to Table 3. Table 3 Groove type and size selection. Serial number Groove type in inches GB/T 13147-91 Line table 3 6.3.2.2 For other types of corner joints not mentioned in Table 3, they shall be specifically formulated according to the design requirements of Table 4 and refer to the provisions of GE985 and GE.986.
Good connection sequence
Welding requirements
Process according to the requirements of Table 1, and make the surface treatment of the bevel according to 6.1!1 Select the village shaking reverse alkane that matches the hanging steel. When welding the bottom channel, it should be noted that the composite braided and umbrella part should not be welded full of the benzene layer to read the bevel, and the bottom channel 1
Chuan and the grinding machine have a reverse elimination of the base channel 1,After cleaning, use the corresponding welding material to weld the weld pass 2. The height of weld pass 2 should pass the interface and fill the interface by more than 0.5-1.0 mm. The transition weld should be less than 3.0 mm. After the transition weld is inspected and qualified, the weld pass 3 is welded with the same material as the composite layer. The thickness of the weld pass 2 should be less than 0.5-1.0 mm. The transition weld should be less than 3.0 mm. After the transition weld is inspected and qualified, the weld pass 3 is welded with the same material as the composite layer. The thickness of the weld pass 2 should be less than 0.5-1.0 mm. The transition weld should be less than 0.5-1.0 mm. After the transition weld is inspected and qualified, the weld pass 3 is welded with the same material as the composite layer. The thickness of the weld pass 2 should be less than 0.5-1.0 mm. The transition weld should be less than 0.5-1.0 mm. Welding should avoid sliding over the benzene layer: when the benzene layer is relatively thick, the benzene layer can be welded after the benzene layer is completely welded, so as to prevent deformation. 6.4 Cleaning before welding
GB/T 13147.-91
Before welding, the oil, rust and other dirt, oxide film, etc. on the wire surface and both sides of the welding groove should be removed at least 20 mm. When welding multiple passes, the surface slag, oxide film and other dirt must be removed before the next weld can be welded. 6.5 Assembly and positioning welding
6.5.1 Assembly
Avoid forced assembly of welded parts, the misalignment of the butt joint is ≤0.s (s is the total thickness of the composite plate), not more than 2mm, and the welded assembly is based on the composite layer. When the thickness of the two butt joint composite plates is different, the smaller thickness should be considered. When the difference in the order of the clad layers and the base layers of two butted composite plates exceeds the provisions of Article 3 of GB985, the thicker clad layer and base plate edge shall be beveled. The bevel length shall be calculated according to the thickness difference of each layer. The calculation formula is shown in formula (1) and formula (2): 1 B (Valley-)
Where:
武:-
Bevel length, mu), see Figure 1:
: clad layer thickness, mm, see Figure 1.
1. 2: 3(1 - ,)
Bevel length, mm, see Figure 14
Base thickness. mm, see Figure 1.
Figure 1 Group bevel treatment diagram
6.5.2 Positioning
Position welding shall be performed on the base steel. A welder with a certificate of qualification shall be responsible for the work. The spacing and length are generally 200-300 mm and 30-50 mm respectively. It can also be determined according to the physical condition of the weldment. If the positioning weld is found to have lines or other defects, it should be removed and repositioned.
7 Welding
7.1 General requirements
7.1.1 The welded joint should have the same mechanical properties as the steel composite plate. 6
W.GB/T 1314791
7.1.2 During welding, the base layer and the composite layer should be prevented from penetrating. 7.1.3 The composite layer should have the same performance as the copper-steel composite plate. 7.1.4 It is not allowed to strike an arc, weld a collar, and a temporary bracket on the composite layer. 7.2 Welding method
The basic welding method is recommended for welding. It can also be buried and gas shielded welding; the welding of the hydrogen layer and the transition layer adopts arc welding and manual electric arc welding. Other welding methods that can ensure the welding quality are allowed. 7.3 Welding process evaluation
7.3.1 When the technical conditions or design drawings of the product require welding process evaluation, welding process evaluation must be carried out before welding. 7.3.2 Welding process evaluation method refers to the requirements of JB 3964, and combined with the welding regulations confirmed by this standard, the unit shall formulate the evaluation method according to the structure and technical requirements, and obtain the approval of the corresponding supervision department. 7.3.3 According to the requirements of the welding process design, the specific welding process specifications shall be formulated. 7.3.4 According to the approved welding process and design drawings and their overall structural requirements, the unit shall formulate the welding process parameters of the specific structure.
7.4 Welding procedure
7.4.1 In general, the welding of copper-steel composite plates should first weld the base steel, then weld the transition layer after the root cleaning and qualified according to the specified quality inspection, and finally weld the cladding layer. Table 4 is an example and requirement of the welding procedure. The welding of the joint types with serial numbers 1 to 1 in Table 2 shall be carried out according to the requirements of Table 4.
7.4.2 When the structure is limited (welding of small-diameter pipes), the cladding layer is welded first, then the transition layer, and finally the forbidden layer (such as the joint type with serial number 5.6 in Table 2). The smallest wire should be used for complex welding to ensure good single and double welding, and then the transition layer is welded with matching welding materials, and finally the base layer is welded. It is required to be carried out according to Table 4. 7.4.3 To prevent the composite layer from penetrating into the composite layer during welding, thereby increasing the dilution of iron in the composite layer weld and reducing the performance of the composite weld chain, the welding current and welding speed of the composite layer weld should be strictly controlled. Under the premise of ensuring good welding, the welding gradient should be minimized. 7.4.4 When the composite layer is not required to be preheated, the preheating temperature should be determined according to the plate thickness and material through experiments. 7.4.5 When preheating is required before welding, the preheating temperature should be determined according to the plate thickness and material through experiments. 7.4.6 The connection of fillet welding shall refer to Table 3. The overall principle is the same as that of butt welding. However, when the weld chain is the base material and the composite material, the transition layer welding material should be used for reverse welding. 7.5 Product welding test plate The welding test plate for testing the product connection performance should be selected with plate specifications that can replace the product. The pre-welding preparation, welding method, welding materials and welding process parameters of the product welding test plate should be the same as those of the product. And it should be carried out at the same time as the product welding. Its performance inspection frequency and qualified standards should comply with the product design requirements and relevant regulations. 7.6 Post-weld heat treatment
7.6.1 When the post-weld band needs to eliminate stress, it should be heat treated. Its heat treatment system should be determined according to the base material, and its calculated thickness should be the total thickness of the entire composite plate.
7.6.2 If the heat treatment affects the performance of the base layer welding hoop, the composite layer weld should be welded after the base weld has completed the heat treatment. 7.7 Post-weld treatment
After welding, the surface welding slag, spatter and other dirt should be carefully cleaned. 7.8 Welder's mark
After the weld is polished and cleaned, the welder's steel stamp should be stamped on the obvious part of the base steel weld for verification. 8 Welding quality inspection
8.1 Inspectors
Inspectors should receive certain technical training, correctly understand the characteristics of copper-steel composite plate welding and quality rating standards, and obtain the approval qualification of relevant departments.
8.2 Process inspection
GH/T 13147-91
After each process in the welding process is completed, it can be transferred to the next process only after passing the inspection. 8.3 Appearance inspection
8.3.1 The outer dimensions of the weld should meet the requirements of the drawing B.3.2 The weld and thermal image adjustment area shall not have cracks, incomplete penetration, incomplete fusion, and excessive edges, arc pits, slag inclusions, etc. 8.3.3 The composite welding chain is not allowed to have undercuts. The undercut depth of the base weld chain shall not exceed 10% of the surface of the layer plate, and the undercut length shall not exceed 10.5mm. The length of the undercut shall not exceed 10mm, and the total length of the weld shall not exceed 10% of the total length of the weld. 8.4 Radiographic flaw detection inspection
Ultrasonic flaw detection shall be carried out in accordance with G3323. The film convexity ratio and qualified standards shall comply with the provisions of the design drawings and technical conditions. In order to reduce the effect of rejection, the first flaw detection inspection shall generally be carried out after the base weld is completed. The second radiographic flaw detection inspection shall be carried out after all welds are welded. B.5 Ultrasonic flaw detection inspection
Ultrasonic flaw detection inspection is used for base steel weld chains. The flaw detection method shall be carried out in accordance with B1152. The convexity ratio and qualified standards shall comply with the provisions of the design drawings and technical conditions.
8.6 Liquid penetrant inspection
Liquid penetrant inspection is used for transition layer and multi-layer crack inspection. The inspection method shall be in accordance with (G115 0 Appendix H, its age test standard shall be used. It shall comply with the provisions of the technical conditions of the design drawing. 8.7 Mechanical properties test of welded joints
8.7.1 Test specimens
The test position ratio should be the same as the weld external inspection and non-destructive testing results. The effective length of the test specimen should be appropriately distributed. According to the provisions of (1325), combined with the characteristics of the composite plate, the test specimen position is shown in Figure 2. k
Figure 2 Schematic diagram of test position
8. 7.2 Test
1·Tension piece t2 - positive bend 13--reverse beggar:4--Impact; 5--The tensile test specimens with multiple layers are tested according to (2651). The tensile strength values of the two specimens shall not be lower than the lower limit of the composite standard. If one of the specimens fails to meet the standard, the two test groups shall be retested. If all are qualified, they are considered qualified. If there is still one unqualified, it is considered unqualified. If the specimen is broken and connected to the material, if the strength is not lower than the minimum tensile strength specified for the material, it can be considered as meeting the total requirements of the test. In the test, the two bend samples are tested according to GB2653. During the test, the braid and the combustion zone of the test bar are all within the technical solid of the test diameter bend. The qualified standard is specified in the table. If both samples are qualified, they are qualified. If one of the samples is unqualified, another sample should be taken for re-test. If all are qualified, they are qualified, otherwise they are unqualified. W base material
ferns pot
hypothesis alloy steel
zhi: e is the sample thickness, nm.
8. 7.4 Impact test
GB/T 13147-91
Bend shaft diameter
Horizontal bend
(Multi-layer Aila)
2180 not
00 not light
Extract the anti-bay
(Benzene layer Aila)
For copper-copper composite welding structure, this test is generally not required. When there are special requirements, this test can be carried out. Impact test is carried out according to GB2650
8. 8 The dilution rate of iron in the composite weld is determined by wet chemical analysis of metal chips taken from the composite weld chain, or by X-ray fluorescence spectrometry. For the structure of white and bronze materials with corrosion requirements, the iron release rate should not exceed 10%. The sampling position and sampling area for dilution rate determination are shown in Figure 3. The minimum thickness to be evaluated is determined based on the thickness of the composite layer calculated by the corrosion allowance design.
Recovery Enterprise Sleeping Main
Thickness of the Hollow Weld
Chemical Protection Zone
Under 10.5
Evaluated Minimum Thickness
Figure 3 Schematic Diagram of the Location of Iron Dilution Rate Sampling
9 Repair of Welding Defects
9.1 When there are unacceptable defects on the weld, repair should be carried out after elimination. , the repair of welds shall be carried out according to the welding procedures of the welded joints of the plate. 9.2 The repair process shall be approved by the supervisor. The repair times of the same person, regardless of the base layer, intermediate layer or composite layer, shall not exceed two times. If it exceeds two times, it shall be approved by the chief technical person in charge of the unit or resolved through consultation by the relevant parties. The repair records shall be recorded in the file.
10 Welding environment
Welding shall be carried out in an environment that can ensure the quality. For electric welding process, welding is prohibited when the wind speed in the welding environment is greater than 10m/s, the relative condensation is greater than 90%, or it is raining or raining. If manual calcium-hydrogen arc welding is used, it should be carried out in the air. If conditions do not allow, a temporary windbreak should be set up and there should be no cross-draft. When the temperature of the joint is below 0°C, it should be preheated to a temperature that feels warm to the touch within 100mm of the starting point.
11 Safety protection
11.1 The welding equipment must be installed correctly, the electric welder should be well grounded, and the cable insulation should be good. 11.2 The welding site must have good wind protection equipment - welding in a narrow container must be supervised by a dedicated person. 11.3 The welder must wear protective clothing as required to prevent burns, scalds and local light burns. WAdditional notes:
This standard was proposed by China State Shipbuilding Corporation. GB/T 13147 91
This standard is under the jurisdiction of the Marine Materials Application Technology Sub-Committee of the National Marine Ship Catalytic Technical Committee. This standard was drafted by the Luoyang Jiehang Materials Research Institute of China State Shipbuilding Corporation. The main drafters of this standard are Jiao Ruo, Wang Ting, Zhang Fali and Yan Cao. W/
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