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GB/T 8110-2020 English PDF (GBT8110-2020)
GB/T 8110-2020 English PDF (GBT8110-2020)
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GB/T 8110-2020: Wire electrodes and weld deposits for gas shielded metal arc welding of non alloy and fine grain steels
GB/T 8110-2020
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 25.160.20
J 33
Replacing GB/T 8110-2008
Wire electrodes and weld deposits for gas shielded metal arc
welding of non alloy and fine grain steels
(ISO 14341:2010, Welding consumables - Wire electrodes and weld deposits for gas
shielded metal arc welding of non alloy and fine grain steels - Classification, MOD)
ISSUED ON: NOVEMBER 19, 2020
IMPLEMENTED ON: JUNE 01, 2021
Issued by: State Administration for Market Regulation.
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Models ... 6
4 Technical requirements ... 8
5 Test method ... 13
6 Re-test ... 15
7 Technical conditions of supply ... 16
Appendix A (Informative) The structural changes of this standard compared with ISO
14341:2010 ... 17
Appendix B (Informative) Technical differences between this standard and ISO
14341:2010 and their reasons ... 18
Appendix C (Informative) Comparison of welding electrode models ... 20
Wire electrodes and weld deposits for gas shielded metal arc
welding of non alloy and fine grain steels
1 Scope
This standard specifies the types, technical requirements, test methods, re-inspection,
supply technical conditions of wire electrodes and weld deposits for gas shielded metal
arc welding of non alloy and fine grain steels.
This standard applies to wire electrodes and weld deposits for gas shielded metal arc
welding of non alloy and fine grain steels, which have minimum tensile strength
requirements of deposited metal not greater than 570 MPa (hereinafter referred to as
"welding electrode").
2 Normative references
The following documents are essential to the application of this document. For the dated
documents, only the versions with the dates indicated are applicable to this document;
for the undated documents, only the latest version (including all the amendments) is
applicable to this standard.
GB/T 2650 Impact test methods on welded joints (GB/T 2650-2008, ISO 9016:2001,
IDT)
GB/T 2652 Tensile test methods on weld and deposited metal (GB/T 2652-2008,
ISO 5178:2001, IDT)
GB/T 3323.1 Non-destructive testing of welds - Radiographic testing - Part 1: X-
and gamma-ray techniques with film (GB/T 3323.1-2019, ISO 17636-1:2013, MOD)
GB/T 18591 Welding - Guidance on the measurement of preheating temperature,
interpass temperature and preheat maintenance temperature (GB/T 18591-2001,
ISO 13916:1996, IDT)
GB/T 25774.1 Test methods for welding consumables - Part 1: Preparation and
testing of deposited metal specimens for mechanical properties in steel nickel and
nickel alloys (GB/T 25774.1-2010, ISO 15792-1:2000, MOD)
GB/T 25775 Technical delivery conditions for welding consumables - Type of
product dimensions tolerances and markings (GB/T 25775-2010, ISO 544:2003,
MOD)
GB/T 25778 Procurement guidelines for welding consumables (GB/T 25778-2010,
ISO 14344:2010, MOD)
GB/T 37910.1-2019 Non-destructive testing of welds - Acceptance levels for
radiographic testing - Part 1: Steel, nickel, titanium and their alloys (ISO 10675-
1:2016, MOD)
GB/T 39255-2020 Gases and gas mixtures for welding and cutting processes (ISO
14175:2008, MOD)
3 Models
3.1 Model division
The welding electrode model is divided according to the mechanical properties of the
deposited metal, the state after welding, the type of shielding gas, and the chemical
composition of the welding electrode. Refer to Appendix C, for the comparison of solid
welding electrode models between this standard and other relevant standard.
3.2 Model compilation method
The welding electrode model consists of five parts:
1) First part: Use the letter "G", to indicate the solid welding electrode for gas
shielded metal arc welding;
2) Second part: Indicate the tensile strength code of the deposited metal, in the
welded state and post-weld heat treatment conditions, as shown in Table 1;
3) Third part: Indicate the test temperature code, when the impact absorbed energy
(KV2) is not less than 27 J, as shown in Table 2;
4) Fourth part: Indicate the type code of the shielding gas; the code of the shielding
gas type is in accordance with the provisions of GB/T 39255;
5) Fifth part: Indicate the classification of the chemical composition of the welding
electrode, as shown in 4.3.
In addition to the above mandatory codes, optional codes can be added to the model:
a) The letter "U", which is appended after the third part, means that under the
specified test temperature, the impact absorbed energy (KV2) shall not be less
than 47 J;
b) No copper-plated code "N", which is appended after the fifth part, means welding
electrode without copper-plating.
The coiled welding electrode shall be suitable for continuous feeding. The welding
electrode joints shall be properly treated, to ensure uniform and continuous electrode
feeding.
4.6 X-ray detection of welds
The acceptance level of X-ray detection of weld seam shall comply with Level 2, which
is specified in Table 1 of GB/T 37910.1-2019.
5 Test method
5.1 Size and surface quality of welding electrode
5.1.1 Sizes
Use a measuring tool, which has an accuracy of 0.01 mm, for the inspection of welding
electrode diameter. Measure at the same position perpendicular to each other. Make at
least two measurements.
5.1.2 Surface quality
The surface quality of the welding electrode is in accordance with the provisions of
GB/T 25775. Any part of the welding electrode is visually inspected.
5.2 Relaxed diameter and warping distance of welding electrode
When measuring the relaxed diameter and warping distance of the welding electrode,
which is wound on the electrode reel (coil), according to the requirements in Table 3,
cut off a sufficient length of welding electrode from the wire reel. Place it on a plane
without restraint. Measure the diameter of the circle or arc formed, which is the relaxed
diameter. The distance from the highest point of the welding electrode to the plane is
the warping distance.
5.3 Chemical analysis
The chemical composition analysis of welding electrode shall be sampled on the
finished welding electrode. Any suitable analysis method can be used for chemical
composition analysis; the arbitration test shall be carried out, according to the analysis
method confirmed by both parties.
5.4 Mechanical property test
5.4.1 Base metal for test
The base metal for the mechanical property test of the deposited metal shall be a steel
plate, which has the same chemical composition or mechanical properties as the
deposited metal. If other base metals are used, it shall use test welding consumables or
other equivalent welding consumables, to weld the isolation layer on the groove surface
and backing plate surface; its thickness shall not be less than 3 mm after processing.
5.4.2 Preparation of specimens
5.4.2.1 The mechanical properties of deposited metal specimen shall be prepared,
according to GB/T 25774.1. Use the specimen type 1.3. The width of the test plate shall
not be less than 125 mm. When welding, use ϕ1.2 mm or ϕ1.6 mm welding electrode,
to weld according to the specifications specified in Table 5. The control requirements
for the number of welding passes and layers are as specified in Table 5. When welding
electrodes of other sizes are used, weld according to the specifications recommended
by the manufacturer.
5.4.2.2 A...
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GB/T 8110-2020: Wire electrodes and weld deposits for gas shielded metal arc welding of non alloy and fine grain steels
GB/T 8110-2020
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 25.160.20
J 33
Replacing GB/T 8110-2008
Wire electrodes and weld deposits for gas shielded metal arc
welding of non alloy and fine grain steels
(ISO 14341:2010, Welding consumables - Wire electrodes and weld deposits for gas
shielded metal arc welding of non alloy and fine grain steels - Classification, MOD)
ISSUED ON: NOVEMBER 19, 2020
IMPLEMENTED ON: JUNE 01, 2021
Issued by: State Administration for Market Regulation.
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Models ... 6
4 Technical requirements ... 8
5 Test method ... 13
6 Re-test ... 15
7 Technical conditions of supply ... 16
Appendix A (Informative) The structural changes of this standard compared with ISO
14341:2010 ... 17
Appendix B (Informative) Technical differences between this standard and ISO
14341:2010 and their reasons ... 18
Appendix C (Informative) Comparison of welding electrode models ... 20
Wire electrodes and weld deposits for gas shielded metal arc
welding of non alloy and fine grain steels
1 Scope
This standard specifies the types, technical requirements, test methods, re-inspection,
supply technical conditions of wire electrodes and weld deposits for gas shielded metal
arc welding of non alloy and fine grain steels.
This standard applies to wire electrodes and weld deposits for gas shielded metal arc
welding of non alloy and fine grain steels, which have minimum tensile strength
requirements of deposited metal not greater than 570 MPa (hereinafter referred to as
"welding electrode").
2 Normative references
The following documents are essential to the application of this document. For the dated
documents, only the versions with the dates indicated are applicable to this document;
for the undated documents, only the latest version (including all the amendments) is
applicable to this standard.
GB/T 2650 Impact test methods on welded joints (GB/T 2650-2008, ISO 9016:2001,
IDT)
GB/T 2652 Tensile test methods on weld and deposited metal (GB/T 2652-2008,
ISO 5178:2001, IDT)
GB/T 3323.1 Non-destructive testing of welds - Radiographic testing - Part 1: X-
and gamma-ray techniques with film (GB/T 3323.1-2019, ISO 17636-1:2013, MOD)
GB/T 18591 Welding - Guidance on the measurement of preheating temperature,
interpass temperature and preheat maintenance temperature (GB/T 18591-2001,
ISO 13916:1996, IDT)
GB/T 25774.1 Test methods for welding consumables - Part 1: Preparation and
testing of deposited metal specimens for mechanical properties in steel nickel and
nickel alloys (GB/T 25774.1-2010, ISO 15792-1:2000, MOD)
GB/T 25775 Technical delivery conditions for welding consumables - Type of
product dimensions tolerances and markings (GB/T 25775-2010, ISO 544:2003,
MOD)
GB/T 25778 Procurement guidelines for welding consumables (GB/T 25778-2010,
ISO 14344:2010, MOD)
GB/T 37910.1-2019 Non-destructive testing of welds - Acceptance levels for
radiographic testing - Part 1: Steel, nickel, titanium and their alloys (ISO 10675-
1:2016, MOD)
GB/T 39255-2020 Gases and gas mixtures for welding and cutting processes (ISO
14175:2008, MOD)
3 Models
3.1 Model division
The welding electrode model is divided according to the mechanical properties of the
deposited metal, the state after welding, the type of shielding gas, and the chemical
composition of the welding electrode. Refer to Appendix C, for the comparison of solid
welding electrode models between this standard and other relevant standard.
3.2 Model compilation method
The welding electrode model consists of five parts:
1) First part: Use the letter "G", to indicate the solid welding electrode for gas
shielded metal arc welding;
2) Second part: Indicate the tensile strength code of the deposited metal, in the
welded state and post-weld heat treatment conditions, as shown in Table 1;
3) Third part: Indicate the test temperature code, when the impact absorbed energy
(KV2) is not less than 27 J, as shown in Table 2;
4) Fourth part: Indicate the type code of the shielding gas; the code of the shielding
gas type is in accordance with the provisions of GB/T 39255;
5) Fifth part: Indicate the classification of the chemical composition of the welding
electrode, as shown in 4.3.
In addition to the above mandatory codes, optional codes can be added to the model:
a) The letter "U", which is appended after the third part, means that under the
specified test temperature, the impact absorbed energy (KV2) shall not be less
than 47 J;
b) No copper-plated code "N", which is appended after the fifth part, means welding
electrode without copper-plating.
The coiled welding electrode shall be suitable for continuous feeding. The welding
electrode joints shall be properly treated, to ensure uniform and continuous electrode
feeding.
4.6 X-ray detection of welds
The acceptance level of X-ray detection of weld seam shall comply with Level 2, which
is specified in Table 1 of GB/T 37910.1-2019.
5 Test method
5.1 Size and surface quality of welding electrode
5.1.1 Sizes
Use a measuring tool, which has an accuracy of 0.01 mm, for the inspection of welding
electrode diameter. Measure at the same position perpendicular to each other. Make at
least two measurements.
5.1.2 Surface quality
The surface quality of the welding electrode is in accordance with the provisions of
GB/T 25775. Any part of the welding electrode is visually inspected.
5.2 Relaxed diameter and warping distance of welding electrode
When measuring the relaxed diameter and warping distance of the welding electrode,
which is wound on the electrode reel (coil), according to the requirements in Table 3,
cut off a sufficient length of welding electrode from the wire reel. Place it on a plane
without restraint. Measure the diameter of the circle or arc formed, which is the relaxed
diameter. The distance from the highest point of the welding electrode to the plane is
the warping distance.
5.3 Chemical analysis
The chemical composition analysis of welding electrode shall be sampled on the
finished welding electrode. Any suitable analysis method can be used for chemical
composition analysis; the arbitration test shall be carried out, according to the analysis
method confirmed by both parties.
5.4 Mechanical property test
5.4.1 Base metal for test
The base metal for the mechanical property test of the deposited metal shall be a steel
plate, which has the same chemical composition or mechanical properties as the
deposited metal. If other base metals are used, it shall use test welding consumables or
other equivalent welding consumables, to weld the isolation layer on the groove surface
and backing plate surface; its thickness shall not be less than 3 mm after processing.
5.4.2 Preparation of specimens
5.4.2.1 The mechanical properties of deposited metal specimen shall be prepared,
according to GB/T 25774.1. Use the specimen type 1.3. The width of the test plate shall
not be less than 125 mm. When welding, use ϕ1.2 mm or ϕ1.6 mm welding electrode,
to weld according to the specifications specified in Table 5. The control requirements
for the number of welding passes and layers are as specified in Table 5. When welding
electrodes of other sizes are used, weld according to the specifications recommended
by the manufacturer.
5.4.2.2 A...
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