This standard specifies the type classification, technical requirements, test methods, inspection rules, winding, packaging and other items of nickel and nickel alloy welding wire. This standard applies to nickel and nickel alloy welding wire for gas shielded arc welding, tungsten inert gas arc welding, plasma arc welding and submerged arc welding. GB/T 15620-1995 Nickel and nickel alloy welding wire GB/T15620-1995 standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Nickel and nickel alloy welding wires
Nickel and nickel alloy welding wires 1 Subject content and applicable scope
GB/T 15620--1995
This standard specifies the model classification, technical requirements, test methods, inspection rules, winding, packaging and other items of nickel and nickel alloy welding wires (including welding wires with nickel content exceeding the content of any other element). This standard is applicable to nickel and nickel alloy welding wires (hereinafter referred to as welding wires) used for gas shielded arc welding, tungsten inert gas arc welding, plasma arc welding and submerged arc welding.
2 Reference standards
GB223.1~223.70 Chemical analysis methods for steel and alloys GB8647.1~8647.10 Chemical analysis methods for nickel 3 Terminology
3.1 Relaxed diameter
The diameter of a circle or arc formed by cutting a sufficient length of welding wire from a welding wire reel (coil) and placing it on a plane without restraint. 3.2 Distance
The distance from the highest point of the welding wire to the plane when cutting a sufficient length of welding wire from a welding wire reel (coil) and placing it on a plane without restraint to form a circular coil.
4 Model classification
4.1 The welding wires included in this standard are classified according to their chemical composition. 4.2 The welding wire model is represented by ERNi×X-×, where the letter ER represents the welding wire, the chemical symbol Ni after ER represents nickel and nickel alloy welding wire, and other main alloying elements in the welding wire are represented by chemical symbols and placed after the symbol Ni. The number after the short dash "-" represents the chemical composition classification code of the welding wire.
4.3 Examples of welding wire models in this standard are as followsER
5 Technical requirements
represents the chemical composition classification code of the welding wire
represents the main alloying elements in the welding wire are chromium and iron represents nickel and nickel alloy welding wire
- represents the welding wirebZxz.net
5.1 The chemical composition of the welding wire shall comply with the provisions of Table 1. Approved by the State Bureau of Technical Supervision on July 12, 1995 and implemented on May 1, 1996
GB/T15620—1995
5.2 Size and allowable deviation of welding wire
GB/T 15620--1995
5.2.1 The diameter and allowable deviation of welding wire shall comply with the provisions of Table 2. Table 2
Packaging form
Straight welding wire and welding wire coil
Wire reel
The length of straight welding wire is 1000±5mm.
Welding wire diameter
1.6,2.0,2.5,3.0
3.2,4.0,5.0,6.0
0.8,1.0,1.2,1.6
5.2.3 According to the supply and demand contract, Other specifications of welding wire can be supplied. Allowable deviation
5.3 Surface quality of welding wire
5.3.1 The surface of welding wire should not have burrs, scratches, foreign impurities and other defects that affect the performance of weld or welding operation. mm
5.3.2 When welding wire is butt-jointed, the size of welding wire at the butt joint shall comply with the provisions of Article 5.2.1 to ensure uniform and continuous feeding on automatic or semi-automatic welding equipment.
5.4 The relaxation diameter and warpage of welding wire shall comply with the provisions of Table 3. Table 3
Welding wire diameter
0. 6~1. 6
Welding wire reel outer diameter
Relaxed diameter
65~380
250900
380~1300
5.5 The requirements for the mechanical properties of the deposited metal and other special properties such as heat resistance, corrosion resistance, and low temperature shall be determined by negotiation between the supply and demand parties. 6 Test method
6.1 The chemical analysis samples of the welding wire shall be taken from the finished welding wire, and sufficient samples for repeated analysis shall be prepared. 6.2 The chemical analysis method of the welding wire can be Any method agreed upon by both parties shall be adopted. The arbitration test shall be conducted in accordance with GB8647.1~8647.10 and GB223.1~223.70.
6.3 The mechanical properties of the deposited metal and other special properties such as heat resistance, corrosion resistance and low temperature shall be tested according to the test items and methods agreed upon by both parties.
6.4 The diameter of the welding wire shall be measured in two mutually perpendicular directions on the same cross section with a measuring tool with an accuracy of 0.01mm, and the measuring position shall be no less than two. 7 Inspection rules
The welding wire shall be inspected in batches by the technical inspection department of the manufacturer. 7.2
Each batch of welding wire shall consist of welding wires with the same furnace number, the same processing technology and the same specifications. The maximum weight of each batch of welding wire is 3t. Each batch of welding wire shall be randomly selected according to the number of coils (rolls) and packages, but shall not be less than two coils (rolls) and packages, and chemical analysis shall be carried out separately. 7.4
For each batch of welding wire, 1% of the number of reels shall be selected, but not less than two reels, for inspection of relaxation diameter and warpage. 7.5 Acceptance
The chemical composition of each batch of welding wire shall comply with the provisions of Article 5.1. 7.5.2 The mechanical properties of the deposited metal of each batch of welding wire and other special properties such as heat resistance, corrosion resistance, low temperature, etc. shall comply with the provisions agreed upon by the supply and demand parties.
7.6 Re-inspection
GB/T15620-1995
7.6.1 When any test fails, the item shall be re-inspected twice, and the re-inspection results shall meet the requirements of the test for that item. 7.6.2 When re-inspecting the chemical composition, it can be taken from the original sample or re-sampled. Only the unqualified elements can be re-inspected. 8 Winding, packaging, marking and quality certificate of welding wire 8.1 Winding of welding wire
8.1-1 The welding wire is supplied in the form of welding wire reel, welding wire coil and straight welding wire. 8.1.2 The size of welding wire reel shall comply with the provisions of Figure 1 and Table 4. The material and design of welding wire reel shall ensure that the welding wire is not easily damaged during normal handling. The welding wire reel shall be clean and dry to ensure the cleanliness of the welding wire. The weight wound on the welding wire reel shall comply with the provisions of Table 5. Driving hole
Welding wire diameter.mm
Outer diameter of welding wire reel, mm
8.1.3 The size of welding wire coil and the weight of winding shall be determined by negotiation between the supply and demand parties. Drive hole
Axis center distance
Drive hole
Maximum weight of wound welding wire, kg
8.1.4 The welding wire wound on the welding wire reel or welding wire coil shall be the welding wire of the same batch number and continuous length. The welding wire shall not be disordered, bent or knotted. The starting end of the welding wire shall be obvious, easy to find and firm. 8.1.5 Each package of straight welding wire shall be the welding wire of the same batch number. The maximum weight of each package of welding wire is 2.5, 5 or 10kg.8.1.6 Other supply forms and packaging weights may be adopted according to the supply and demand contract. 480
8.2 Packaging
GB/T15620—1995
8.2.1 Appropriate inner packaging shall be adopted to facilitate the storage of welding wire. 8.2.2 Appropriate outer packaging shall be adopted to prevent the welding wire from being damaged during transportation and storage. 8.3 Marking
8.3.1 The outer packaging of each welding wire shall be marked with: welding wire model, batch number, specification, net weight, manufacturer name, and production date. 8.3.2 The inner packaging of each welding wire shall be marked with: welding wire model and this standard number, batch number, inspection number, specification, net weight, manufacturer name by label or other methods.
8.4 Quality Certificate
The manufacturer shall issue a quality certificate for each batch of welding wire based on the actual inspection results. When the user makes a request, the manufacturer shall provide a copy of the inspection results.
Welding wire model
ERNi-1
ERNiCu-7
ERNiCr-3
ERNiCrFe-5
ERNiCrFe-6
ERNiFeCr-1
ERNiFeCr-2
ERNiMo-1
ERNiMo-2
GB/T15620—1995
Appendix A
Typical deposited metal tensile strength
(reference)
Tensile strength
Note: ()Except ERNiFeCr-2, All are tensile strength welding wire models in the post-weld state
ERNiMo-3
ERNiMo-?
FRNiCrMo-1
ERNiCrMo-8
ERNiCrMo-9
FRNiCrMo-2
ERNiCrMo-3
ERNiCrMo-4
ERNiCrMo-?
Tensile strength%
②ERNiFeCr-2 is the tensile strength after aging, aging conditions: heating to 718℃, keeping warm for 8h, cooling to 620℃ at a rate of 55℃/h and then air cooling.
Additional remarks:
This standard is proposed by the Ministry of Machinery Industry of the People's Republic of China. This standard is under the jurisdiction of Harbin Welding Research Institute of the Ministry of Machinery Industry. This standard is drafted by Harbin Welding Research Institute. The drafters of this standard are Zhang Rang'er and Wen Anran. 482
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