JB/T 4747-2002 Technical conditions for ordering steel welding rods for pressure vessels
Some standard content:
JB
Industry Standards of the People's Republic of China
JB/T4747—2002
Steel welding rods for pressure vessels
Ordering technical conditions
Released on 08-22
Implemented on 2003-03-01
Released by the National Economic and Trade Commission
Foreword
Introduction
1
Scope| | tt | |5
6 batch division
Quality certificate
Appendix A (normative appendix)
Product identification
Item
Times| |tt||JB/T4747—2002
11
14
15
15
IS
16
This standard is formulated for the first time.
Appendix A of this standard is a normative appendix.
Foreword
This standard is proposed by the National Pressure Vessel Standardization Technical Committee. This standard was approved by the National Economic and Trade Commission. This standard is under the jurisdiction of the Manufacturing Subcommittee of the National Pressure Vessel Standardization Technical Committee. JB/T4747—2002
The organizations responsible for drafting this standard: Hefei General Machinery Research Institute, Tianjin Jinqiao Welding Materials Co., Ltd., Jinzhou Jintai Metal Industry Co., Ltd., Shanghai Electric Power Repair and Manufacturing Plant Co., Ltd. and Shanghai Welding Equipment Co., Ltd. . The main drafters of this standard: Ge Zhaowen, Hou Lizun, Wang Daliang, Dou Wanbo, Qiu Zhizhong, Xie Yongdan. This standard is interpreted by the National Pressure Vessel Standardization Technical Committee. Introduction | |tt | On the basis of steel welding rods), several technical requirements have been added, improved and changed. 1 Scope
Technical conditions for ordering steel welding rods for pressure vessels This standard specifies the technical conditions for ordering steel welding rods for pressure vessels. This standard applies to carbon steel electrodes, low alloy steel electrodes, and stainless steel electrodes for pressure vessels. 2 Normative reference documents
JB/T 47472002
The clauses in the following documents become the clauses of this standard through reference in this standard. For dated reference documents, all subsequent amendments (excluding corrigenda) or revisions do not apply to this standard. However, parties that reach an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. Version. For undated referenced documents, the latest edition applies to this standard. CB/T232—1999 Bending test method for metallic materials GB/T 983—1995
Stainless steel welding rods
GB/T5117—1995 Carbon steel welding rods
GB/T 5118—1995||tt ||Low box gold steel welding rod
JB/T4709-—2000
Welding regulations for steel pressure vessels
JB 4730—1994E
Non-destructive testing of pressure vessels||tt ||3 Technical Requirements
The factory inspection of steel welding rods for pressure vessels shall not only comply with the provisions of GB/T983-1995, GB/T5117-1995, GB/T5118-1995 respectively, but also shall comply with the provisions of this standard.
3.1 Eccentricity of welding rods
a) For welding rods with a diameter not greater than 2.5rmm, the eccentricity should not be greater than 5%. The eccentricity of 5% of the number of electrodes inspected is allowed to be greater than 5%, but not greater than 7%:
b) For electrodes with diameters of 3.2mm and 4.0mm, the eccentricity should not be greater than 4%. The eccentricity of 5% of the number of welding rods inspected is allowed to be greater than 4%, but not greater than 5%;
c) For welding rods with a diameter of not less than 5.0mm, the eccentricity should not be greater than 3%. The eccentricity of 5% of the number of inspected electrodes is allowed to be greater than 3%, but not greater than 4%.
3.2T-type joint fillet weld
The root of the T-type joint fillet weld is not allowed to be unfused or not penetrated. During the test, the gap between the vertical plate and the bottom plate was 0mm~2mm. The chemical composition of the 3.3 melting number metal | The phosphorus and sulfur content of the metallization should not be higher than the values ??specified in the corresponding base material standards.
JB/T4747—2002
Welding rod model
E4303
E4316
E4315
E5016
E5015||tt ||E5016G
E5015G
E5015-C
E5516G
E5515C
E6015G
E6016DI
E6015-DI1| |tt||E5515B1
E5515B2
E5515 B2 V
E6015B3
E5MoV15
E30816
E308- 15
E34716
E347 - 15
E316-16
E31615
E316L16
E31816
E317-16
E308L16| | tt | | E317L16 | |tt||J426
J427
J506
J507
W707www.bzxz.net
J506RH
W607
JS07RH||tt ||J556RH
J557
J607RH
J606
J60
R207
R307
R317
R407
R507
A102
A107
A132
A137
A202
A207
A022| | tt | . 12
s
0.035
0.020
0.020
0.020
0.020
0.015
0.015| |tt||0.015
0.015
0.015
0.015
0.015
0.015
0.015
0.030||tt ||0.020
0.020
0.015
0.020
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030| |tt||P
0.035
0.030
0.030
0.030
0.030
0.020
0.025||tt ||0.025
0.025
0.025
0.025
0.020*
0.025
0.025
0.030||tt| |0.025
0.030
0.025
0.030
0.035
0.035
0.035
0.035
0.035
0.035
0.035
0.035| |tt||0.035
0.035
0.035
0.035
0.035
%
3.4 ??Melting number Metal mechanical properties and bending properties JB /T4747-2002
3.4.1 The difference between the tensile strength value of melted metal and the lower limit value of GB/T5117-1995 and GB/T5118-1995 should not exceed 100MPa. Among them, the difference between the tensile strength value of the deposited metal of heat-resistant low-alloy steel electrodes with a diameter of no more than 2.5mm and the lower limit of GB/T5118-1995 is not allowed to exceed 120MPa.
3.4.2 The elongation of the deposited metal in the tensile test shall not be lower than the lower limit specified in GB/T983-1995, GB/T5117-1995, and GB/T5118-1995, and shall not be lower than 20%.
3.4.3 Take three impact test specimens, and the average impact test result shall not be lower than the following specified value. The impact test result of one of the specimens is allowed to be lower than the following specified value, but shall not be lower than 70% of the specified value below. The specified values ??for Charpy V-notch impact test of weld metal of steel electrodes commonly used in pressure vessels are shown in Table 2; a
The specified values ??of Charpy V-notch impact test of weld metal of steel electrodes not listed in Table 2 should be Not less than the b)
limit value specified in the corresponding parent material standard. | |tt | ||ES015-C
E5016G
E5015-G
E5515-G
E5516-G
E6016-D
E6015Di| |tt||E6015G
E5515B1
E5515 -B2
E5515-B2-V
E6015B3
E5MoV15
Grade example|| tt||J422
J426
J427
J506
J507
W607
J506RH
J507RH||tt| |W707
J557
J556RH
J606
J607
J607RH
R207
R307H
R307
R317
R407
R507
Test temperature
0
30
- 30
60
40
70
30
40
30
- 50
glushi
normal temperature
Normal temperature
Normal humidity
Slippery
Impact absorption energy
J
27
27||tt| |27
27
34
54
27
34
27
54
34
47
47
55
41
3.4.4 After the longitudinal bending specimen is bent to a specified angle, the welding on the tensile surface There shall be no single crack or defect with a length greater than 3mm in any direction in the joint metal. Corner cracking of the specimen is generally not counted, but corner cracking caused by slag inclusions or other welding defects is accrued. If required by the ordering unit, bending test results should be provided. 3.5 Weld metal radiographic transillumination inspection
Weld metal radiographic transillumination inspection is carried out in accordance with the standard JB4730-1994. The quality of radiographic transillumination should not be lower than AB level, and the weld defect level should not be lower than level I.
13
JB/T 4747—2002
3.6 Moisture content of electrode coating or diffusion of molten metal Hydrogen content Low hydrogen type coating Moisture content of electrode coating or diffusion of molten metal The hydrogen content should comply with the requirements in Table 3. The welding rod manufacturer should provide the moisture content of the welding rod coating in the warranty document. If the ordering unit requires it, the diffused hydrogen content of the deposited metal should also be provided. Table 3 Low-hydrogen coated welding electrode coating moisture content or molten metal diffusible hydrogen content specified electrode model
EA3××
E50×x
E50 × × ×||tt| |E55×××
E60 × × ×
E70 Method)
mL/100g
4.0
34.0
≤3.0
#2.0
Moisture content of drug skin (normal state)| |tt||%
$0.35
≤0.25
0.20
≤0.15
Vertical welding test pieces and overhead welding test pieces should be prepared separately. The thickness and groove of the parts shall be in accordance with the national standards for welding rods. 4.1 | When hot-heating is used, the heat-affected zone should be removed by cold working. 4.3.2 The specimen should be cold leveled before removing the weld reinforcement from the specimen. 4.3.3 The surface of the specimen after removing the coal seam reinforcement and backing plate should be flush. Take one face bending specimen and one back bending specimen each. 4.3.4
When preparing a face-bent (back-bent) specimen, the excess thickness should be removed from the back (front), and the tensile surface of the specimen should be as close to the surface of the steel as possible.
4.3.5
See Figure 1 for sample dimensions.
165
Note: The tension surface angle of the sample is R≤2.
Picture!
4.4 The bending test shall comply with the provisions of Table 4 and GB/T232-1999. Table 4 Bend test regulations
Sample thickness
mem
10
14
Bending center diameter
BU
40
Distance between supports
mm
63
Bending angle
()
180
5 packaging| |tt||Welding rod packaging should be sealed and moisture-proof.
Batch division
6
6.1 Carbon steel welding rods and low alloy steel welding rods shall not exceed 30t per batch. 2 Low-temperature steel welding rods and stainless steel welding rods shall not exceed 10t per batch. 6.2
7
Quality certificate
The content of the quality certificate should be complete, and all data should be filled with actual measurement results. JB/T4747—2002
15
3 Take 3 impact specimens, the average value of the impact test results shall not be lower than the following specified value, and the impact test result of one of the specimens is allowed to be lower than the following specified value, but shall not be lower than 70% of the following specified value. The specified values ??of Charpy V-notch impact test of weld metal of commonly used steel welding rods for pressure vessels are shown in Table 2; the specified values ??of Charpy V-notch impact test of weld metal of steel welding rods not listed in Table 2 shall not be lower than the specified values ??of the corresponding parent material standards.
Table 2 Impact test requirements for commonly used steel welding rods for pressure vessels Welding rod model
E4303
E4316
E4315
E5016
E5015
ES015-C
E5016G
E5015-G
E5515-G
E5516-G
E6016-D
E6015Di
E6015G
E5515B1
E5515 -B2
E5515-B2-V
E6015B3
E5MoV15
Grade Example
J422
J426
J427
J506
J507
W607
J506RH
J507RH
W70 7
J557
J556RH
J606
J607
J607RH
R207
R307H
R307
R317
R407
R507
Test temperature
0
30
- 30
60
40
70
30
40
30
- 50
Wet
Room temperature
Room temperature
Normal wet
Slippery wet
Impact absorbed energy
J
27
27
27
34
54
27
34
27
54
34
47
47
55
41
3.4.4 After the longitudinal bending specimen is bent to the specified angle, there shall be no single crack or defect with a length greater than 3mm in any direction along the weld metal on the tensile surface. The corner cracking of the specimen is generally not counted, but the corner cracking caused by slag inclusion or other welding defects shall be counted. If required by the ordering unit, the bending test results shall be provided. 3.5 Radiographic inspection of weld metal
Radiographic inspection of weld metal shall be carried out in accordance with the standard JB4730-1994. The quality of radiographic inspection shall not be lower than AB grade, and the weld defect grade shall not be lower than I grade.
13
JB/T 4747-2002
3.6 Water content of electrode coating or diffusible hydrogen content of molten metal The water content of low-hydrogen coating electrode coating or diffusible hydrogen content of molten metal shall comply with the provisions of Table 3. The electrode manufacturer shall provide the water content of electrode coating in the warranty. If required by the ordering unit, the diffusible hydrogen content of deposited metal shall also be provided. Table 3 Specifications for moisture content of coating or diffusible hydrogen content of molten metal for low-hydrogen coated electrodes Electrode model
EA3××
E50×x
E50 × × ×
E55×× ×
E60 × × ×
E70 ×× ×
4 Method for longitudinal bending test of melt metal
Diffusible hydrogen content of deposited metal (glycerol method)
mL/100g
4.0
34.0
≤3.0
#2.0
Water content of coating (normal state)
%
$0.35
≤0.25
0.20
≤0.15
Vertical welding specimens and overhead welding specimens shall be prepared separately, and the thickness and groove of the specimens shall comply with the national standards for welding rods. 4.1
4.2 The diameter of the welding rod is 3.2mm or 4mmg
4.3 Test specimens
4.3.1 The test specimens can be cut by cold working method or hot cutting method. When hot cutting is used, the heat affected zone should be removed by cold working. 4.3.2 Before removing the weld excess of the specimen, the specimen should be cold leveled. 4.3.3 After removing the weld excess and the pad, the surface of the specimen should be flush. Take one face bend specimen and one back bend specimen. 4.3.4
When preparing the face bend (back bend) specimen, the excess thickness should be removed from the back (front) and the tensile surface of the specimen should be as close to the steel surface of the specimen as possible.
4.3.5
See Figure 1 for specimen dimensions.
165
Note: The tensile surface of the specimen should be corrected with an angle R≤2.
Figure!
4.4 The bending test should comply with the provisions of Table 4 and GB/T232-1999. Table 4 Bending test regulations
Specimen thickness
mem
10
14
Bending center diameter
BU
40
Distance between supports
mm
63
Bending angle
()
180
5 Packaging
Welding rod packaging should be sealed and moisture-proof.
Batch division
6
6.1 Carbon steel welding rods and low alloy steel welding rods shall not exceed 30t per batch. 2 Low temperature steel welding rods and stainless steel welding rods shall not exceed 10t per batch. 6.2
7
Quality certificate
The content of the quality certificate shall be complete, and each data shall be filled with the actual measurement results. JB/T4747—2002
15
3 Take three impact test specimens, and the average impact test result shall not be lower than the following specified value. The impact test result of one of the specimens is allowed to be lower than the following specified value, but shall not be lower than 70% of the following specified value. %. The specified values ??for Charpy V-notch impact test of weld metal of steel electrodes commonly used in pressure vessels are shown in Table 2; a
The specified values ??of Charpy V-notch impact test of weld metal of steel electrodes not listed in Table 2 should be Not less than the b)
limit value specified in the corresponding parent material standard. | |tt | ||ES015-C
E5016G
E5015-G
E5515-G
E5516-G
E6016-D
E6015Di| |tt||E6015G
E5515B1
E5515 -B2
E5515-B2-V
E6015B3
E5MoV15
Grade example|| tt||J422
J426
J427
J506
J507
W607
J506RH
J507RH||tt| |W707
J557
J556RH
J606
J607
J607RH
R207
R307H
R307
R317
R407
R507
Test temperature
0
30
- 30
60
40
70
30
40
30
- 50
glushi
normal temperature
Normal temperature
Normal humidity
Slippery
Impact absorption energy
J
27
27||tt| |27
27
34
54
27
34
27
54
34
47
47
55
41
3.4.4 After the longitudinal bending specimen is bent to a specified angle, the welding on the tensile surface There shall be no single crack or defect with a length greater than 3mm in any direction in the joint metal. Corner cracking of the specimen is generally not counted, but corner cracking caused by slag inclusions or other welding defects is accrued. If required by the ordering unit, bending test results should be provided. 3.5 Weld metal radiographic transillumination inspection
Weld metal radiographic transillumination inspection is carried out in accordance with the standard JB4730-1994. The quality of radiographic transillumination should not be lower than AB level, and the weld defect level should not be lower than level I.
13
JB/T 4747—2002
3.6 Moisture content of electrode coating or diffusion of molten metal Hydrogen content Low hydrogen type coating Moisture content of electrode coating or diffusion of molten metal The hydrogen content should comply with the requirements in Table 3. The welding rod manufacturer should provide the moisture content of the welding rod coating in the warranty document. If the ordering unit requires it, the diffused hydrogen content of the deposited metal should also be provided. Table 3 Low-hydrogen coated welding electrode coating moisture content or molten metal diffusible hydrogen content specified electrode model
EA3××
E50×x
E50 × × ×||tt| |E55×××
E60 × × ×
E70 Method)
mL/100g
4.0
34.0
≤3.0
#2.0
Moisture content of drug skin (normal state)| |tt||%
$0.35
≤0.25
0.20
≤0.15
Vertical welding test pieces and overhead welding test pieces should be prepared separately. The thickness and groove of the parts shall be in accordance with the national standards for welding rods. 4.1 | When hot-heating is used, the heat-affected zone should be removed by cold working. 4.3.2 The specimen should be cold leveled before removing the weld reinforcement from the specimen. 4.3.3 The surface of the specimen after removing the coal seam reinforcement and backing plate should be flush. Take one face bending specimen and one back bending specimen each. 4.3.4
When preparing a face-bent (back-bent) specimen, the excess thickness should be removed from the back (front), and the tensile surface of the specimen should be as close to the surface of the steel as possible.
4.3.5
See Figure 1 for sample dimensions.
165
Note: The tension surface angle of the sample is R≤2.
Picture!
4.4 The bending test shall comply with the provisions of Table 4 and GB/T232-1999. Table 4 Bend test regulations
Sample thickness
mem
10
14
Bending center diameter
BU
40
Distance between supports
mm
63
Bending angle
()
180
5 packaging| |tt||Welding rod packaging should be sealed and moisture-proof.
Batch division
6
6.1 Carbon steel welding rods and low alloy steel welding rods shall not exceed 30t per batch. 2 Low-temperature steel welding rods and stainless steel welding rods shall not exceed 10t per batch. 6.2
7
Quality certificate
The content of the quality certificate should be complete, and all data should be filled with actual measurement results. JB/T4747—2002
15
4. After the longitudinal bending specimen is bent to the specified angle, the weld metal on the tensile surface shall not have a single crack or defect with a length greater than 3mm in any direction. Angle cracking of the specimen is generally not counted, but it is caused by slag inclusion or Edge cracking caused by other welding defects shall be accrued. If required by the ordering unit, bending test results should be provided. 3.5 Weld metal radiographic transillumination inspection
Weld metal radiographic transillumination inspection is carried out in accordance with the standard JB4730-1994. The quality of radiographic transillumination should not be lower than AB level, and the weld defect level should not be lower than level I.
13
JB/T 4747—2002
3.6 Moisture content of electrode coating or diffusion of molten metal Hydrogen content Low hydrogen type coating Moisture content of electrode coating or diffusion of molten metal The hydrogen content should comply with the requirements in Table 3. The welding rod manufacturer should provide the moisture content of the welding rod coating in the warranty document. If the ordering unit requires it, the diffused hydrogen content of the deposited metal should also be provided. Table 3 Low-hydrogen coated welding electrode coating moisture content or molten metal diffusible hydrogen content specified electrode model
EA3××
E50×x
E50 × × ×||tt| |E55×××
E60 × × ×
E70 Method)
mL/100g
4.0
34.0
≤3.0
#2.0
Moisture content of drug skin (normal state)| |tt||%
$0.35
≤0.25
0.20
≤0.15
Vertical welding test pieces and overhead welding test pieces should be prepared separately. The thickness and groove of the parts shall be in accordance with the national standards for welding rods. 4.1 | When hot-heating is used, the heat-affected zone should be removed by cold working. 4.3.2 The specimen should be cold leveled before removing the weld reinforcement from the specimen. 4.3.3 The surface of the specimen after removing the coal seam reinforcement and backing plate should be flush. Take one face bending specimen and one back bending specimen each. 4.3.4
When preparing a face-bent (back-bent) specimen, the excess thickness should be removed from the back (front), and the tensile surface of the specimen should be as close to the surface of the steel as possible.
4.3.5
See Figure 1 for sample dimensions.
165
Note: The tension surface angle of the sample is R≤2.
Picture!
4.4 The bending test shall comply with the provisions of Table 4 and GB/T232-1999. Table 4 Bend test regulations
Sample thickness
mem
10
14
Bending center diameter
BU
40
Distance between supports
mm
63
Bending angle
()
180
5 packaging| |tt||Welding rod packaging should be sealed and moisture-proof.
Batch division
6
6.1 Carbon steel welding rods and low alloy steel welding rods shall not exceed 30t per batch. 2 Low-temperature steel welding rods and stainless steel welding rods shall not exceed 10t per batch. 6.2
7
Quality certificate
The content of the quality certificate should be complete, and all data should be filled with actual measurement results. JB/T4747—2002
15
4. After the longitudinal bending specimen is bent to the specified angle, the weld metal on the tensile surface shall not have a single crack or defect with a length greater than 3mm in any direction. Angle cracking of the specimen is generally not counted, but it is caused by slag inclusion or Edge cracking caused by other welding defects shall be accrued. If required by the ordering unit, bending test results should be provided. 3.5 Weld metal radiographic transillumination inspection
Weld metal radiographic transillumination inspection is carried out in accordance with the standard JB4730-1994. The quality of radiographic transillumination should not be lower than AB level, and the weld defect level should not be lower than level I.
13
JB/T 4747—2002
3.6 Moisture content of electrode coating or diffusion of molten metal Hydrogen content Low hydrogen type coating Moisture content of electrode coating or diffusion of molten metal The hydrogen content should comply with the requirements in Table 3. The welding rod manufacturer should provide the moisture content of the welding rod coating in the warranty document. If the ordering unit requires it, the diffused hydrogen content of the deposited metal should also be provided. Table 3 Low-hydrogen coated welding electrode coating moisture content or molten metal diffusible hydrogen content specified electrode model
EA3××
E50×x
E50 × × ×||tt| |E55×××
E60 × × ×
E70 Method)
mL/100g
4.0
34.0
≤3.0
#2.0
Moisture content of drug skin (normal state)| |tt||%
$0.35
≤0.25
0.20
≤0.15
Vertical welding test pieces and overhead welding test pieces should be prepared separately. The thickness and groove of the parts shall be in accordance with the national standards for welding rods. 4.1 | When hot-heating is used, the heat-affected zone should be removed by cold working. 4.3.2 The specimen should be cold leveled before removing the weld reinforcement from the specimen. 4.3.3 The surface of the specimen after removing the coal seam reinforcement and backing plate should be flush. Take one face bending specimen and one back bending specimen each. 4.3.4
When preparing a face-bent (back-bent) specimen, the excess thickness should be removed from the back (front), and the tensile surface of the specimen should be as close to the surface of the steel as possible.
4.3.5
See Figure 1 for sample dimensions.
165
Note: The tension surface angle of the sample is R≤2.
Picture!
4.4 The bending test shall comply with the provisions of Table 4 and GB/T232-1999. Table 4 Bend test regulations
Sample thickness
mem
10
14
Bending center diameter
BU
40
Distance between supports
mm
63
Bending angle
()
180
5 packaging| |tt||Welding rod packaging should be sealed and moisture-proof.
Batch division
6
6.1 Carbon steel welding rods and low alloy steel welding rods shall not exceed 30t per batch. 2 Low-temperature steel welding rods and stainless steel welding rods shall not exceed 10t per batch. 6.2
7
Quality certificate
The content of the quality certificate should be complete, and all data should be filled with actual measurement results. JB/T4747—2002
15
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