JB/T 4281-1999 Materials for resistance welding electrodes and accessories
Some standard content:
JB/T4281-1999
This standard is equivalent to the international standard ISO5182:1991E "Materials for resistance welding electrodes and accessories". The main technical content of this standard is the same as ISO5182:1991E, with the addition of surface quality technical requirements and the deletion of Appendix D (text log).
The writing format of this standard conforms to the provisions of GB/T1.1-1993. Compared with the previous version, this standard adds the "Foreword" section, adds some new varieties in the "Material Composition and Properties", and adds hardness conversion charts.
Appendix A, Appendix B and Appendix C of this standard are all informative appendices. This standard replaces JB4281-86 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Standardization of Electrical Alloys. The drafting units of this standard are: Shanghai Electric Science Research Institute, Shanghai Volkswagen Automotive Co., Ltd., and Shanghai Yongxin Color Picture Tube Co., Ltd. The main drafters of this standard are: Ding Yaqin, Cheng Jinglei, Qiu Xiaochuan, Hua Jianqing, and He Guofang. This standard is entrusted to Shanghai Electric Science Research Institute for interpretation. This standard was first published in July 1986.
JB/T4281-1999
ISO Foreword
ISO (International Organization for Standardization) is a joint organization of national standardization organizations (ISO member groups) in various countries around the world. The drafting of international standards is generally carried out by ISO technical committees. Each member organization interested in the topic determined by the technical committee has the right to propose drafts to the committee. There are government and non-governmental organizations and international organizations that have working relations with ISO. ISO and the International Electrotechnical Commission (IEC) work closely in all matters of electrotechnical standardization. The draft international standard accepted by the technical committee is circulated among the member groups. At least 75% of the member groups must vote in favor before it can be published as an international standard.
ISO5182 international standard was developed by ISO/TC44 welding and joining process technical committee. This second version of the standard, which has been technically revised, cancels and replaces the first version of the standard (ISO5182:1978). Appendices A, B, C and D in this standard are for reference only. 1
Mechanical Industry Standard of the People's Republic of China
Material for resistance welding electrodes and accessories
Welding-materials for resistance weldingelectrodes and ancillary equipmentJB/T4281—1999
eqvISO5182:1991(E)
Replaces JB4281--86
This standard specifies the performance of materials for electrodes and accessories used to carry welding current and transmit working pressure in resistance welding. Typical uses of materials are shown in Appendix A (indicative appendix). 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. At the time of publication of the standard, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T230—1991
Metal Rockwell hardness test method
GB/T3048.21994
Electrical property test method for wire and cableResistivity test for metal conductor materialsGB/T4340—1984
3 Definitions and symbols
Metal Vickers hardness test method
3.1 Softening temperature: It refers to the highest temperature at which the maximum value of the room temperature hardness reduction of a material after being kept at this temperature for 2 hours is 15% of the original temperature.
3.2 Symbols
Materials should be named by group, class and number:
For example: CuCrl should be marked as A2/1—JB/T4281—1999W75Cu should be marked as B10—JB/T4281—19994 Classification
Materials are divided into two groups according to their state:
Group A - copper and copper alloys;
Group B - sintered materials.
4.1 Group A - Copper and Copper Alloys
This group is divided into four categories of materials:
Class 1 non-heat-treatable alloys with high conductivity and medium hardness, whose strength is improved by cold working during the manufacturing process; Class 2 The hardness of this type of alloy is higher than that of Class 1, and the mechanical strength is improved by heat treatment or heat treatment combined with cold working during the manufacturing process; Class 3 Heat-treatable alloys have higher mechanical properties than Class 2, but lower conductivity than Class 1 or Class 2; Class 4 Special performance alloys, whose properties are achieved by heat treatment or cold working, this type of alloy Generally, they cannot be used interchangeably. 4.2 Group B - Sintered materials
Approved by the State Machinery Industry Bureau on August 6, 1999, 18
Implementation on January 1, 2000
This group consists of six categories according to use requirements: Category 10 and Category 11 copper and tungsten sintered products:
5 Technical requirements
Copper and tungsten carbide sintered products;
Sintered and processed products of molybdenum;
Sintered and processed products of tungsten;
Sintered products of silver and tungsten.
The properties of the material shall comply with the provisions of Table 5.2 Chemical composition
JB/T4281-1999
The chemical composition and impurity content of the material can refer to the provisions of the relevant material standards. 5.3 Mechanical properties
5.3.1 The hardness of the material shall not be lower than the specified value in Table 1. 5.3.2 These materials are mainly used for resistance welding, so their properties are different from those of materials for general purposes. For the tensile strength and elongation of copper alloys with special requirements, refer to the relevant standards. 5.4 Electrical properties
The electrical conductivity of the material shall not be lower than the values specified in Table 1. 5.5 Surface quality
The surface of the rod and plate shall be clean and smooth, without defects such as cracks, edges, pores, etc. 5.5.2
The surface of the forging shall be clean Clean, complete, without cracks, inclusions and other defects. Castings should be clean and free of harmful defects.
Sintered materials should not have cracks, inclusions and other defects. 6 Test methods and inspection rules
The Vickers hardness test shall be in accordance with GB/T4340. If Rockwell hardness is required, it can be carried out in accordance with GB/T230. 2 The conductivity test shall be carried out in accordance with GB/T3048.2. When the above method cannot be used, the test shall be carried out in accordance with the method agreed upon by the supply and demand parties or by a jointly 6.2
accepted arbitration unit.
6.3 Hardness test and conductivity test can generally guarantee the quality of materials, but softening temperature test is allowed. Usually, softening temperature test does not need to be carried out on every batch of materials. The softening temperature test is carried out according to the test method agreed upon by the supply and demand parties. 6.4 The surface quality of the material is inspected by the naked eye. Check 2]. 6.5 If one of the test results is unqualified during the test, the test should be repeated. The repeated test should take double the number of test samples for retesting the item. If the retest still has unqualified samples, the batch of materials is unqualified3. Adoption instructions:
13) This content is not included in the adopted standard. This standard is consistent with the previous version. 19
Cur-ETP
CuCrIZr
CuCrZr
CuCo2Be
CuNi2Si
CuNiiP
CuBe2CoM
CuAl10Fe5Ni5
JB/T4281-1999
Table 1 Composition and properties of materials
Nominal composition
Cu(-Ag)99.90min
Cd0.7 to 1.3
Cr0.3 to 1.2
Cr0.5 to 1.4
0.02 to 0.2
0.4 to 1.0
Zr0.02 to 0.2
0.11 to 0.25
Co 2.0 to 2.8
Be0.4 to 0.7www.bzxz.net
Ni1.6 to 2.5
0.5 to 0.8
Ni0.8 to 1.2
0.16 to 0.25
Be1.8 to 2.1
CoNiFe0.20 to 0.6
Ag6 to 7
AI 8.5 to 11.5
2.0 to 6.0
Ni4.0 to 6.0
Mn0 to 2.0
The nominal composition of the material is for reference only. The properties of the production materials are shown in the table. General form
Drawing rod>25
Drawing skill rod<25
Drawing wedge>25
Drawing rod<25
Drawing rod>25
Drawing rod25
Drawing ladder>25
Drawing ladder<25
Increase hardness
Polished parts<45
Increase hardness
Polished parts<30
Drawing sample>25
Drawing standard<25
Drawing skill rod>25
Drawing rod<25
Drawing rod>25
Drawing ladder<25
Drawing rod>25
Drawing rod<25
Forging<25| |tt||Plated parts 25 to 50
HV(30kg)
Minimum value
Conductivity
Minimum value
Softening temperature
Minimum value
Welding lead electrode
Welding lead electrode, welding coated steel (sharp,
tin, lead) electrode
Welding mild steel electrodes, grip rods, shafts and
Welding mild steel and coated steel electrodes
Welding mild steel, coated steel and high strength low alloy copper electrodes
Incandescent low carbon plated steel and high strength
low alloy steel electrodes
Welding stainless steel and heat-resistant steel electrodes have
Stress electrode lifting rods, shafts and electrodes
With stress core electrode grip rods. Axis and electric
Electrode swing and curved stop
Electrode grip under strong mechanical stress
Electrode grip
Welding high conductive copper-based material with electric
Welding high conductive copper-based material with electric
JB/T 42811999
Appendix A
《Appendix of Tips》
Typical Applications of Resistance Welding Electrode Materials
Table A》Typical Applications
Welding Aluminum Electrode Wheel
Welding Lead Electrode forging, Welding
Coated Steel (Zinc, Tin, Molybdenum, etc.) Electrode Wheel
Welding Low Carbon Steel Electrode
Welding Low Carbon Steel Slope Layer
Steel Electrode Wheel
Welding Low Carbon Steel and Coated
Steel Electrode Wheel
Welding Low Carbon Steel and Coated
Steel Electrode Wheel
Welding Stainless Steel and Heat Resistant
Steel Electrode Wheel Shaft and Shaft||Shaft and Shaft Bushing
Shaft and Shaft Bushing
Welding under Strong Mechanical Stress
Welding under High Thermal Stress Electrode wheels for low carbon steel, shafts and shafts under low electrical load, large molds, molds and micro-electrodes, molds and inlaid electrodes, molds and inlaid electrodes, molds and tank inlaid electrodes, molds or inlaid electrodes under high electric shuttle pressure, press plates and molds, good low steel monthly rollers, embedded electrodes, welding stainless steel inlays, flash welding or butt welding, welding low carbon steel molds or bottom electrodes, welding low carbon steel, carbon steel, stainless steel and heat-resistant steel molds, or embedded wave electrodes, high clamping force molds and plated embedded electrodes ||Flash welding durable mold
Welding low carbon
pot inlaid electrode
welding steel small mold or
inlaid electrode
transmission performance
stress-free current-carrying components
selection branch
non-ferrous metal high-frequency electric
tide welding electrode
stress-carrying components
Group B sintered material lining
stress-carrying components
gun parts, such as
grip rod, shaft
stress-carrying components
gun parts, such as
plastic rod, shaft
stress-carrying components
stress-carrying components
stress-carrying components
stress-carrying components
stress-carrying components Parts
Heat and heat micro-expansion
Hot-rolling and hot-rolling
Hot-rolling and hot-forging inlay
Hot riveting and hot-forging lock
Electrode, resistance nail welding
Inlay electrode
Hot riveting and hot micro-keying
Electrode: resistance welding
Inlay electrode
High-value electric welding color
Electrode for metal
JB/T4281-1999
Appendix B
(Suggestive Appendix)
Hardness conversion
Resistance welding materials - generally measure the hardness according to the Vickers, Orwell or Rockwell hardness test method in GB/T4340, GB/T230, ISO6507-1, ISO6506 or ISO6508. This standard adopts the Vickers hardness test method. In the laboratory, the test is carefully prepared and measured to obtain the most representative data. No matter what test method and load are used, the surface layer of the sample must be eliminated to measure representative data, especially when the material is heat-processed or heat-treated, such as hot forging to produce fluoride. When comparing the Vickers, Brinell, and Rockwell hardness values of the second type of alloy in Group A, the values do not conform to the standard comparison values that can be used for copper and brass. Therefore, Figures B1 and B2 give the approximate conversion relationship between CuCr and CuCrZr alloys, which is also valid for CuCoBe and CuNiP. The data band of the figure covers 80% of the results, achieving the expected dispersion. Since the Brinell hardness values measured with different steel ball sizes and loads have a larger dispersion, this conversion relationship may be valid for other alloys, but its equivalence should be agreed upon by both parties. 280
304050
Rockwell hardness (B)
Conversion of Vickers hardness (30kg) to Rockwell hardness (B)10/1000
80120160200240280
Brinell hardness
Figure B2, Conversion of Vickers hardness (30kg) to Brinell hardness22
Cu-ETP
CuCr1Zr
CuCtZt
CuCo2Be
CuNi2Si
CuNiiP
CuBe2CoNi
CuAl10Fe5Ni5
WC70Cu
JB/T4281-1999
Appendix C
(Suggestive Appendix)
ISO recommended material composition and properties
Chemical composition and mechanical properties
Chemical composition
ISO1337
ISO1336
ISO1336
ISO1336
ISO1187
ISO1187
Forging shape Formula
ISO1337
ISO1336
ISO1336
ISO1336
ISO1187
Iso187
Electrical properties
ISO1337
ISO1336
ISO1336
ISO1187
ISO1187
Must comply with
Mechanical properties
ISO1637
ISO1637
IS016341
ISO 1637 | | tt | |ISO3491
IS03486
IS03487
ISO3489
ISO3490
ISO3491
ISO3486
ISO3487
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