JB/T 56102.3-1999 Carbon steel welding rods, low alloy steel welding rods, stainless steel welding rods Product quality classification Part 3: Stainless steel welding rod product quality classification

JB/T 56102.3-1999 Carbon steel welding rod, low alloy steel welding rod, stainless steel welding rod product quality classification Part 3: Stainless steel welding rod product quality classification JB/T56102.3-1999 standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T56102.3-1999
Carbon Steel Welding Rod, Low Alloy Steel Welding Rod,
Stainless Steel Welding Rod
Product Quality Grading Part 3:
Stainless Steel Welding Rod Product Quality Grading
(Internal Use)
Published on December 30, 1999
State Machinery Industry Bureau
Implementation on June 1, 2000
JB/T5610 2.3—1999
1 Scope
2 Reference standards
3 Technical requirements
4 Sampling
5 Test methods
Inspection rules
JB/T56102.3—1999
This standard is a revision of the stainless steel welding rod part in JB/T5610294 "Quality classification of carbon steel welding rods, low alloy steel welding rods and stainless steel welding rods" based on GB/T9831995 "Stainless steel welding rods". Compared with the stainless steel welding rod part in JB/T56102-94, the main technical contents of this standard have been changed as follows: E209, E219, E240, E308H, E316H, E320LR, E383, E385, E2209 and E2553 welding rods have been added; the re-arcing interval time has been adjusted; and the dust generation item in the process performance has been cancelled. This standard is part of the JB/T56102 series of standards "Quality classification of carbon steel welding rods, low alloy steel welding rods, and stainless steel welding rods". This series of standards includes the following three parts: JB/T56102.1-1999 Quality classification of carbon steel welding rods JB/T56102.2-1999 Quality classification of low alloy steel welding rods JB/T56102.3-1999 Quality classification of stainless steel welding rods This standard replaces JB/T56102-94 from the date of implementation. This standard is proposed and managed by the National Welding Standardization Technical Committee. The drafting units of this standard are Harbin Welding Research Institute, Tianjin Jinqiao Welding Material Co., Ltd., and Jiande Xinanjiang Electric Welding Rod Factory. The drafters of this standard are Chu Jijun, Chen Mo, Wu Zhenxiang, Hou Yongtai, and Du Jiancai. This standard was first issued in 1980, revised for the first time in 1985, revised for the second time in 1988, and this is the third revision. I
1 Scope
Machinery Industry Standard of the People's Republic of China
Carbon Steel Welding Rod, Low Alloy Steel Welding Rod,
Stainless Steel Welding Rod
Product Quality Grading Part 3
Stainless Steel Welding Rod Product Quality Grading
(Internal Use)
JB/T56102.3-1999
Replaces JBT56102-94
This standard specifies the technical requirements, sampling, test methods and inspection rules for the product quality grade of stainless steel welding rods. This standard applies to the product quality grade of stainless steel welding rods. 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard was published, the versions shown were all valid. All standards will be revised. Parties using this standard should explore the possibility of using the latest version of the following standards. GB/T9831995 Stainless steel welding rod
3 Technical requirements
The product quality of stainless steel welding rods is divided into three levels: qualified products, first-class products and superior products. They are assessed according to their external quality, internal quality and process performance.
3.1 External quality
The external quality shall comply with the provisions of Table 1.
Table 1 External quality
Inspection items
External quality
(score)
Average root pass rate%
Eccentricity (score)
3.2 Internal quality
3.2.1 Chemical composition of deposited metal
Qualified products
The chemical composition of deposited metal shall comply with the provisions of Table 2. Approved by the State Bureau of Machinery Industry on December 30, 1999, high-quality products
implemented on June 1, 2000
welding rod model
E209-××
E219-Xx
E240-××
E307-××
E308-××
E308H-XX
E308L-××
E308Mo-XX||t t||E308MoL-X×
E309-××
E309L-××
E309Nb-XX
E309Mo-XX
E309MoL-X ×
E310-××
E310H-××
E310Nb-××
E310Mo-XX
E312-Xx
E316-×|| tt||E316H-××
E316L-XX
E317-××
E317L-X×
E317MoCu-XX
E317MoCu L-XX
E318-××
E318V-XX
E320-××
E320LR-XX
E330-X×
E330H-× ×
0.04-0.14
0.04-0.08
0.08-0.20
0.35-0.45
0.04-0.08
0.1 8-0.25
0.35-0.45
JB/T56102.3—1999
Chemical composition of deposited metal
20.5~24.0
19.0-21 .5
17.0~19.0
18.0-21.5
18.0-21.0
22.0~25.0
25.0-28.0
2 8.0-32.0
17.0-20.0
18.0-21.0
17.0~20.0
19.0~21.0
14.0~17.0|| tt||12.0-14.0
20.0-22.5
20.0-22.0
11.0-14.0
12.0-14.0
11.0-1 4.0 | | tt | | 32.0-36.0 | | tt | | 33.0-37.0 | 30
N：010-030
Nb:0.70-1.00
Nb:0.70-1.00
Nb:6XC-1.00
030-070
Nb:8XC-1.00
Nb:8XC-0.40
Electrode model
E330MoMnWNbXx
E347-××
E349 -××
E383-××
E385-X×
E410-××
E410NiMo-XX
E430-××
E502-X×
E505XX
E630-××
E16-8-2-××
E16-25MbN-××
ETCr-××
ESMoV-X X
E9Mo-X×
E11MoVNi-×X
ElIMoVNiW-× ×
E2209-××
E2553-XX
1The single values ​​in the table are all maximum values
15.0~17.0
26.5~29.0
11.0-13.5
80-105
16.00-1675
145~165
140-180
85-100
21.5~23.5
JB/T56102.3—1999
Table 2 (end)
33.0-37.0
30.0-33.0
24.0-26.0
22.0-27.0
0.60-0.90
Qualified product,
0.35-0.65||t t||0.45-0.70
0.45-0.65
0.65~1.20
0.45-0.65|| tt||0.40-0.70
0.70-1.00
0.60-0.90
0.80-1.00| |tt||First class product,
Excellent product
0.25-0.75
Nb:1.0-20
W:2.0~ 3.0
Nb:8XC-1.00
Nb：0.75-1.20
010-030
Ti:Q15
W:1.25-1.75
3.25-4.00Nb：
0.15-0.30
N≥01
V:a10-035
V:020-040
0.20-0.40
W:0.40-0.70
2When other elements are present in the chemical analysis of the elements given in the table, the total amount of these elements shall not exceed 0.5% (except iron). 3 The letter L in the electrode model indicates a lower carbon content, H indicates a higher carbon content, and R indicates a lower carbon, phosphorus, and silicon content. 2 Mechanical properties of deposited metal
The results of the deposited metal tensile test shall conform to the requirements of Table 3. 3
E209-××
E219-××
E240-X×
E307-XX
E308××
E308H-X×
E308L-XX
E308Mb-X×
E308MbL-XX| |tt||E309-××
E309L-XX
E309Nb-XX
E309Mb-XX
E309MbL-XX
E310-××
E310HXX||tt| |E310Nb-XX
E310Mb-××
E312-XX
E316-××
E316HXX
E316L-xx
E317-X×
E317L-X X
E317MbCu-XX
E317MbCuL-X×
E318-×x
E318V-××
E320-××
E320LR-XX
E330-××
JB/T56102.3—1999bzxZ.net
Mechanical properties of deposited metal
Tensile strength 0%
Elongation 85
Qualified products, first-class products, superior products
Heat treatment
Electrode model
E330HXX
E330MbMnWNb-XX
E347-× ×
E349-XX
E383-××
E385-××
E410-××
E410NiMo-XX
E430-X×
E502-XX
E505-××
E630-X×
El6-82-××
E16-25MoN-XX
E7Cr-× ×
ESMoV-XX
E9Mo-××
ElIMoVNi-X X
ElIMoVNiW-××
E2209-××
E2553-X×
1The values ​​in the table are all minimum values
JB/T56102.3-1999
Table 3 (end)
Tensile strength
2The letters in the heat treatment column indicate the following: elongation 85
Qualified products,|| tt||First-class and superior products
The specimen is kept at 730-760℃ for 1h, cooled to 315℃ with the furnace at a rate not exceeding 60℃/h, and then air-cooled:
The specimen is kept at 595-620℃ for 1h, and then air-cooled:b
Then air-cooled:
The specimen is kept at 760~790℃ for 2h, cooled to 595℃ with the furnace at a rate not exceeding 55℃/h, heat treated|| tt||The specimen was kept at 840-870℃ for 2h, cooled to 595℃ with the furnace at a rate not exceeding 55℃/h, and then air-cooled: d
eThe specimen was kept at 1025-1050℃ for 1h, then air-cooled to room temperature, then heated to 610-630℃ for 4h, precipitation hardened, and then air-cooled to room temperature:
The specimen was kept at 740-760℃ for 4h, then air-cooled gThe specimen was kept at 73 0~750℃ insulation for 1h, then air cooling 3 Corrosion resistance of deposited metal
The corrosion resistance test of deposited metal of qualified, first-class and superior welding rods shall be determined by agreement between the supply and demand parties 5
3.2.4 Ferrite content of deposited metal
JB/T56102.3—1999
The ferrite content of deposited metal of qualified, first-class and superior welding rods shall be determined by agreement between the supply and demand parties. 3.3 Process performance
3.3.1 T-joint fillet weld
The test results of T-joint fillet welds of qualified, first-class and superior welding rods shall comply with the provisions of 3.3.1.1 and 3.3.1.2. 3.3.1.1 The surface of the fillet weld shall be free of cracks, weld bumps, slag inclusions and surface pores after visual inspection. 3.3.1.2 The cross section of the fillet weld shall meet the following requirements after polishing and etching: a) The fillet weld on each side shall be melted to or through the intersection of the two plates; b) The weld leg size of the fillet weld on each side and the difference between the two weld leg lengths shall comply with the requirements of Table 4 (see Figure 1); c) The convexity of the convex fillet weld on each side shall comply with the requirements of Figure 2; d) Upon visual inspection, there shall be no cracks on the transverse end face of the fillet weld; e) The weld shall be free of slag inclusions and pores.
Table 4 Fillet weld dimensions
Electrode diameter
9.0 or 13.0
6.0 or 9.0
1) Only applicable to EX××-17 type electrodes
Lead size
Lead size
Convex fillet weld
Welding position
Horizontal welding, overhead welding
Horizontal welding, overhead welding
Horizontal welding, overhead welding
Lead size!
Maximum leg size
Solution size
Convex fillet weld
Figure 1 Fillet weld shape
Difference between the lengths of the two weld legs
3.3.2 Re-striking
The re-striking performance shall comply with the requirements of Table 5.
JB/T56102.3—1999
Group foot size: mn
Figure 2 Convexity of convex fillet weld
Table 5 Re-ignition performance
Coating type
4 Sampling
4.1 Sampling quantity
Qualified products
Re-ignition interval time
Superior products
When the eccentricity of the welding rod is tested by non-destructive method, 110 welding rods should be sampled from each batch of welding rods, of which 5 should be taken for moisture resistance and coating strength tests respectively, and the other 100 should first be used to test other items of external quality, and then for internal quality and process performance. If the eccentricity of welding rods is tested by destructive methods, 110 welding rods should be sampled from each batch of welding rods, of which 5 are taken for moisture resistance and coating strength tests respectively. The other 100 are first used to test other external quality items except eccentricity, and then 20 are randomly selected from them for eccentricity testing. The remaining welding rods are used to test the internal quality and process performance. If the welding rods used to test the external quality need to be retained, the number of welding rods required for the internal quality, process performance or eccentricity test should be increased during sampling.
When the inspection fails and needs to be retested, the sampling should be doubled according to the above method. 4.2 Sampling method
When sampling each batch of welding rods, take representative samples at least three locations according to the required number. 5 Test method
5.1 External quality
The scores and inspection quantity of the 18 items of external quality of welding rods are shown in Table 6. 7
Inspection items
Eccentricity
Moisture resistance
Coating strength
Electrode diameter
Electrode length
Clamping end length
Bending
Unclean grinding tail
Blistering, wrinkled
5.1.1 Eccentricity
JB/T56102.3—1999
External quality score and inspection quantity
Number of inspection
100 or 20
Each inspection welding rod is measured at any point. The measurement point should not be selected at the defective part that affects the measurement of welding rod eccentricity. Magnetic welding rods are inspected by non-destructive methods, and 100 rods are tested. Non-magnetic welding rods can be inspected by non-destructive methods, testing 100 rods, or by destructive methods, testing 20 rods.
5.1.2 Moisture resistance
Put the welding rod in water and observe it after 1 hour. The coating should not expand or peel off. 5.1.3 Coating strength
Put the welding rod horizontally and let it fall freely onto a smooth and flat steel plate with a thickness of not less than 14mm and placed horizontally. The height of the welding rod falling is specified in Table 7. Only the coating at both ends of the inspected welding rod is allowed to be broken, and the total length of the breakage is not more than 40mm. Table 7 Height of welding rod falling
Welding rod diameter
Falling height
5.1.4 Welding rod diameter
The diameter of the welding rod shall comply with the provisions of Table 8.
5.1.5 Welding rod length
The length of the welding rod shall comply with the provisions of Table 8.
JB/T56102.3—1999
Table 8 Welding rod diameter and welding rod length
Welding rod diameter
Basic size
4.0, 5.0, 6.0
Limit deviation
Basic size
220-260
230-350
300-460
340-460
Welding rod length
1 It is allowed to manufacture 3.0mm diameter welding rod instead of 3.2mm welding rod, and 5.8mm diameter welding rod instead of 60mm welding rod. 2 According to the agreement between the supply and demand parties, it is allowed to supply welding rods of other sizes. 5.1.6 Clamping end length
The clamping end length shall comply with the provisions of Table 9.
Table 9 Clamping end length
Welding rod diameter
5.1.7 Curvature
The maximum bending deflection of the welding rod shall not exceed 1mm
5.1.8 Impurities
Limit deviation
Clamping end length
Impurities are not allowed on the surface of the coating. Wood chips, bamboo pieces, thin steel wires, oversized paint particles (exceeding the enterprise's raw material standards) or particles with obviously different colors on the surface of the coating are considered impurities. 5.1.9 Damage
Any of the following situations shall be judged as unqualified: a) The width and length of the scratch are greater than or equal to the welding core diameter; b) The width of the scratch is greater than 1mm and the total length is greater than or equal to 40mm; c) The width of the scratch is greater than 1mm and the length of one place is greater than or equal to 30mm; d) The width of the scratch is greater than 1mm, the length is greater than or equal to 2mm, and the depth is greater than or equal to 1/2 of the coating thickness; e) The width of the scratch is less than or equal to 1mm and the total length is greater than or equal to 200mm; f) The size of the pit is greater than 2mm and there is more than one place; the size of the pit is less than or equal to 2mm and there are more than two places; g) Except for the grinding head and grinding tail, the core is exposed on the surface of the coating; h) The welding rod indentation is treated as a scratch.
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