This standard specifies the model classification, technical requirements, test methods, inspection rules, winding, packaging and other items of carbon steel and low alloy steel solid welding wire and filler wire. This standard applies to solid welding wire for gas shielded arc welding of carbon steel and low alloy steel, and is recommended for filler wire for gas tungsten arc welding and plasma arc welding (hereinafter referred to as welding wire). GB/T 8110-1995 Carbon steel and low alloy steel welding wire for gas shielded arc welding GB/T8110-1995 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Welding wires for gas shielding arc welding of carbon and low alloy steelsSubject content and scope of application
GB/T8110-1995
Replaces GB8110--87
This standard specifies the model classification, technical requirements, test methods, inspection rules, winding, packaging and other items of solid welding wires and filler wires of carbon steel and low alloy steel.
This standard applies to solid welding wires for gas shielding arc welding of carbon steel and low alloy steel, and is recommended for filler wires (hereinafter referred to as welding wires) for gas tungsten arc welding and plasma arc welding. 2 Reference standards
GB3323 Radiography and quality classification of steel fusion welded butt joints GB223.1~223.70 Chemical analysis methods for steel and alloys GB2652 Tensile test methods for welds and deposited metals Impact test methods for welded joints
GB2650
GB700 Carbon structural steel
GB/T1591 Low alloy high strength structural steel
GB228 Tensile test methods for metals
3 Terms
3.1 Relaxed diameter
The diameter of the circle or arc formed by cutting a sufficient length of welding wire from the welding wire reel (coil) and placing it on a plane without restraint. 3.2 Warp distance
The distance from the highest point of the welding wire warping to the plane when cutting a sufficient length of welding wire from the welding wire reel (coil) and placing it on a plane without restraint.
4 Model classification
4.1 Classification of welding wires according to chemical composition and mechanical properties of deposited metal when arc welding with consumable gas shielding 4.2 The model of welding wire is ERXX-X, where the letters ER represent welding wire, the two digits after ER represent the minimum tensile strength of deposited metal, and the letters or numbers after the short dash "" represent the classification code of chemical composition of welding wire. If other chemical components are added, they are directly represented by the yuan rope symbol and separated from the preceding digits by a short dash "". 4.3 Examples of welding wire models in this standard are as follows: Approved by the State Bureau of Technical Supervision on July 12, 1995 and implemented on May 1, 1996
5 Technical requirements
GB/T8110---1995
Indicates that the welding wire contains manganese
Indicates the classification code of the chemical composition of the welding wire
Indicates that the minimum tensile strength of the deposited metal is 550MPa Indicates the welding wire
5.1 The chemical composition of the welding wire shall comply with the provisions of Table 1. 5.2 The mechanical property tests and radiographic flaw detection tests required for different types of welding wires are specified in Table 2. 5.3 Mechanical properties of deposited metal
5.3.1 The results of the tensile test of the deposited metal shall comply with the provisions of Table 3. 5.3.2 The results of the V-notch impact test of the deposited metal shall comply with the provisions of Table 4. 5.4 Radiographic flaw detection of welds shall comply with the Class I provisions in GB3323. 5.5 Size and allowable deviation of welding wire
5.5.1 The diameter and allowable deviation of welding wire shall comply with the provisions of Table 5. 5.5.2 The length of filler wire shall be 1000±10mm. 5.6 Surface quality of welding wire
5.6.1 The surface of welding wire shall be smooth and flat, and shall not have burrs, scratches, rust and oxide scale, etc., nor shall there be other impurities that have adverse effects on welding performance or welding equipment operation performance. 5.6.2 The copper plating layer of welding wire shall be uniform and firm. When checking the bonding strength of copper plating layer by winding method, there shall be no scaling and peeling. 5.7 The stiffness of welding wire shall enable the welding wire to be evenly hooked and continuously fed. The tensile strength of welding wire shall comply with the provisions of Table 6. 5.8 The relaxed diameter and warping distance of welding wire shall comply with the provisions of Table 7. 5.9 When welding wire is butt-jointed, the butt joint shall be properly processed to ensure uniform and continuous wire feeding. 5.10 According to the supply and demand contract, welding wires of other sizes may be supplied, and the surface of the welding wire may also be treated with other surface protection methods that do not affect welding and mechanical properties.
GB/T8110-1995
021 0~20'010500
1:0~90
g9 0~s 0z 1~06 0
0~2020~s8~00
590~0m
68:0~0t
o2*0 ~0 00z '0~01
1020088-29 3
060090
01~900
o 0~0t 002'0~0 0
10~20028-99
180~0s 002~09 10~202-09 2
08008.100109009-9
08000061200
*099009 100 020-
'0～℃
*0~0℃
56*0~99 001'2~08 1
GB/T 8110-1995
99~580
0906·
s0~920
0o·1~090f
0~02
08\1~0f
p80~00
0902081
2-69 3
08 0~05 0b1 2~09 15t0~20 0
680~0t
Welding wire model
ER49-1
ER50-2
ER50-3
ER50-4
ER50-5
ER50-6
ER50-7
ER55-B2
ER55-B2L
ER 55-B2-MnV
ER 55-B2-Mn
ER62-B3
ER62-B3L
ER55-C1
FR55-C2
ER55-C3
ER 55-D2-Ti
ER55-D2
ER69-1
ER69-2
ER 69-3
ER 76-1
ER83-1
ER XX-G
Ray ray detection
GB/T 8110—1995
Deposited metal tensile test
Carbon steel welding wire
V-notch impact test
Not required
Chromium-molybdenum steel welding wire
Not required
Manganese-molybdenum steel welding wire
Other low alloy steel welding wire
Not required
Negotiation between the supply and demand parties
Post-weld status
Post-weld heat treatment status
Post-weld status
Post-weld heat treatment status
Post-weld status
Post-weld status
Negotiation between the supplier and the buyer
Welding wire model
ER49-1
ER50-2
ER50-3
ER50-4
ER50-5
ER50-6
ER50-7
ER 55-D2-Ti
ER 55-D2
ER55-B2
ER55-B2L
ER 55-B2-MnV
ER 55-B2-Mn
ER55-C1
ER 55-C2
ER55-C3
ER62-B3
ER62-B3L
ER 69-1
ER69-2
ER69-3
ER76-1
ER 83-1
ER XX-G
Protective gas
Ar+1~5%0z
Ar+20%cOz
Ar+1～5%0
Ar+2%02
Ar+2%02
GB/T8110—1995
Tensile strength
≥490
≥500
≥620
≥690
≥760
≥830
Yield strength o.2
≥372
≥420
≥470
≥440
≥470
610～700
660~740
730~840
negotiated by both parties
Elongation
Note: For ER50-2, ER50-3, ER50-4, ER50-5, ER50-6 and ER50-7 welding wire, when the elongation exceeds the minimum value, the yield strength and tensile strength may be reduced by 10MPa for every 1% increase, but the minimum tensile strength shall not be less than 480MPa, and the minimum yield strength shall not be less than 400MPa. 398
Welding wire model
ER49-1
ER50-2
ER50-3
ER50-4
ER50-5
ER50-6||tt ||ER50-7
ER55-D2-Ti
ER55-D2
ER55-B2
ER55-B2L
ER55-B2-MnV
ER 55-B2-Mn
ER55-C1
ER 55-C2
ER55-C3
ER62-B3
ER62-B3L
FR69-1
ER69-2
ER69-3
ER76-1
ER83-1
ER XX-G
GB/T 8110—1995
Test temperature, ℃
Not required
Not required
Not required
V-notch impact absorption energy, J
Negotiation between the supplier and the buyer
Wire diameter
0.5, 0.6
0.8,1.0,1.2,1.4,1.6,2.0,2.5
Wire diameter, mm
0.8,1 .0,1.2
1.4,1.6,2.0
2.5.3.0,3.2
GB/T8110—1995
Allowable deviation
Wire tensile strength, MPa
≥930
≥860
≥550
Note: Wire tensile strength is only applicable to welding wire wound into wire reels, wire coils and wire cylinders with a diameter of >200mm. Table 7
Welding wire diameter
6 Test method
6.1 Chemical analysis of welding wire
Outer diameter of welding wire reel (coil)
≥350
Relaxed diameter
≥100
≥350
Relaxed diameter
Relaxed diameter
6.1.1 Chemical analysis samples of welding wire shall be taken from finished welding wire, and sufficient samples for repeated analysis shall be prepared. 6.1.2 The chemical analysis method of welding wire can be carried out according to any method agreed upon by the supply and demand parties. The arbitration test shall be carried out in accordance with GB223.1223.70.
6.2 Deposited metal mechanical properties test
6.2.1 The diameter of the welding wire used for the deposited metal mechanical properties test is 1.2mm or 1.6mm. If welding wires of other diameters are produced, welding wires with diameters close to 1.2mm or 1.6mm can be used for the test. 6.2.2 The test piece material shall meet the requirements of Table 8. When there is a difference from the requirements in Table 8, the test piece groove surface and the backing plate shall be welded with an isolation layer. The welding wire used shall be the same as the test welding wire. The thickness of the isolation layer shall be greater than 3mm after processing. The groove processing is shown in Figure 1. Other methods may also be used to ensure that the deposited metal is not affected by the test piece material. 400
Welding wire model
ER49-1
ER50-2
ER50-3
ER50-4
ER50-5
ER50-6
FR 50-7
ER55-B2
ER55-B2L
ER 55-B2-MnV
ER 55-B2-Mn
ER62-B3
ER62-B3L
ER 55-C1
ER55-C2
ER55-C3
ER 55-D2-Ti
ER55-D2
ER69-1
ER69-2
ER69-3
ER76-1
ER83-1
ER XX-G
GB/T8110—1995
Conform to Q235A grade, B grade in GB700
Q255A grade, B grade
16Mn in GB1591
Or other equivalent materials
Test piece material
Cr-Mo steel with equivalent tensile strength to deposited metalMn-Mo steel, Ni steel and other steels with equivalent tensile strength to deposited metal Other low alloy steel supply and demand parties negotiate
Strike test specimen
GB/T8110-1995
1/2 total length
--Temperature measurement point
Tensile test specimen
(a) Test specimen position and test specimen size
(b) Test specimen groove processing
Figure 1 Test specimen preparation for mechanical properties test
6.2.3 Test specimen size and sampling position shall be as specified in Figure 1. 6.2.4 Test specimens shall be assembled as shown in Figure 1 and welded in a horizontal position. After welding, the angular deformation shall be scrapped if it exceeds 5°. Correction of the test specimen after welding is not allowed. Reverse deformation or restraint methods may be used to prevent angular deformation. 6.2.5 After the test specimen is positioned and welded, it shall be heated to the preheating temperature range specified in Table 9 and measured with a temperature pen or surface thermometer at the position specified in Figure 1. The interpass temperature shall be maintained during the welding process and welding shall be carried out according to the welding conditions in Table 10. 402
Welding wire model
ER49-1
ER50-2
ER50-3
ER50-4
ER50-5
ER50-6
ER50-7
ER 55-D2-Ti
ER55-D2
ER55-B2
ER55-B2L
ER 55-B2-MnV
ER55-B2-Mn
ER55-C1
ER55-C2
ER55-C3
ER62-B3
ER62-B3L
ER69-1
ER 69-2
ER69-3
ER76-1
ER83-1
ER XX-G
GB/T 8110—1995
Preheating temperature
Not required
150±15
200±15
150±15
Interpass temperature
150±15
200±15
150±15
Negotiation between the supplier and the buyer
Post-weld heat treatment temperature
620±15
730±15
700±15
620±15
690± 15
Not required
Wire diameter, tmm
Shielding gas
Wire feeding speed, mm/s
Arc voltage, V
Welding current, A
Distance between electrode tip and workpiece, mm
Welding speed, mm/s
Preheating temperature and interpass temperature, ℃
GB/T8110-1995
190±10
260~290
Note: Wire feeding speed and distance between electrode tip and workpiece are reference values. See Table 3
DC reverse connection
See Table 9
102±5
330-360
6.2.6 If welding must be interrupted, the test piece shall be allowed to cool to room temperature in still air during the interruption. If necessary, an intermediate heat treatment shall be carried out in accordance with the requirements of 6.2.7.2. When re-welding, the test piece shall be heated to the interpass temperature specified in Table 9 and carried out in accordance with the provisions of 6.2.5.
6.2.7 Post-weld heat treatment
6.2.7.1 If post-weld heat treatment is required according to Table 9, it should be carried out before the impact test specimen and tensile test specimen are processed and in accordance with the requirements of 6.2.7.2.
6. 2. 7.2
When the test specimen is placed in the furnace, the furnace temperature shall not be higher than 310℃, and the maximum heating rate is 200℃/h. After heating to the heat treatment temperature specified in Table 9, it shall be kept warm for 1h and then start cooling. The maximum cooling rate is 170℃/h. When it cools to 310℃, the test specimen can be taken out of the furnace and cooled in still air. wwW.bzxz.Net
6.2.8 Deposited metal tensile test
6.2.8.1 According to the position shown in Figure 1, a deposited metal tensile test specimen shall be processed from the test specimen. The specimen size shall be as shown in Figure 2. Note: ① The size of the specimen head is determined by the fixture structure of the testing machine. ② When the yield strength is measured with an extensometer, the specimen length can be increased, but the gauge length for measuring elongation cannot be changed. Figure 2 Molten metal tensile test specimen
6.2.8.2 The deposited metal tensile test shall be carried out in accordance with GB2652. 6.2.9 Deposited metal V-notch impact test 6.2.9.1 According to the position shown in Figure 1, five impact test specimens shall be machined from the same specimen from which the deposited metal tensile test specimen was taken. The specimen dimensions shall be in accordance with Figure 3.
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