CN112935629A - High-strength solid welding wire special for 100kg grade T/P960E steel pipe - Google Patents
High-strength solid welding wire special for 100kg grade T/P960E steel pipe Download PDFInfo
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- CN112935629A CN112935629A CN202110179360.2A CN202110179360A CN112935629A CN 112935629 A CN112935629 A CN 112935629A CN 202110179360 A CN202110179360 A CN 202110179360A CN 112935629 A CN112935629 A CN 112935629A
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- welding wire
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- 238000003466 welding Methods 0.000 title claims abstract description 71
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 34
- 239000010959 steel Substances 0.000 title claims abstract description 34
- 239000007787 solid Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 5
- 239000012535 impurity Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 239000011324 bead Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 238000005728 strengthening Methods 0.000 description 5
- 239000003345 natural gas Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910001563 bainite Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 210000005067 joint tissue Anatomy 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/3066—Fe as the principal constituent with Ni as next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0261—Rods, electrodes, wires
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention provides a high-strength solid welding wire special for a 100 kg-grade T/P960E steel pipe, which comprises the following components by mass percent, wherein C is less than or equal to 0.1 percent, Mn is 1.0-2.0 percent, Si is less than or equal to 1.0 percent, Ni is 2.0-5.0 percent, Ti is less than or equal to 0.1 percent, Cr is less than or equal to 1.0 percent, Mo is 0.5-1.5 percent, Nb is less than or equal to 0.1 percent, Re is less than or equal to 0.1 percent, Cu is less than or equal to 0.30 percent, and the content; the balance of Fe, and the sum of the mass percentages of the components is 100%. The solid welding wire can meet the welding requirements of TP960E steel pipes, and the welding bead is beautiful in forming, excellent in welding seam mechanical property and good in corrosion resistance, and can ensure the welding quality. The method is also suitable for other 1000MPa grade high-strength steel.
Description
Technical Field
The invention belongs to the technical field of welding materials, and particularly relates to a high-strength solid welding wire special for a 100 kg-grade T/P960E steel pipe.
Background
With the construction and production of long-distance pipelines such as western gas transmission from east, shanjing second line, faithful line, puckery and Ninglan and the like, gas utilization areas are rapidly transferred to economically-developed coastal markets, consumption structures are changed, gas utilization for urban gas and power generation is obviously increased, gas utilization for industrial fuel and chemical raw materials is gradually reduced, and consumption of natural gas is gradually increased. With the further sophistication of the natural gas infrastructure, the natural gas consumption market is expanding rapidly.
At present, the discovered petroleum and natural gas resources are mostly concentrated in areas with severe environments, such as deep surface layers or polar oceans, and the exploitation depth gradually increases along with the continuous increase of the demand of oil and gas resources, which provides more rigorous requirements for the development of deep wells and ultra-deep well pipelines. At present, the matched steel realizes the development of high strength and high performance and the application of light-weight engineering, but most welding materials are foreign mature products, and the performance of domestic products is relatively poor in the face of blockade of the core technology of foreign related fields. In order to obtain a steel pipe welding joint with high strength, high toughness, extrusion resistance and good corrosion resistance, the lightweight steel pipe structure is realized, and the pipeline welding requirement of oil-gas deep well operation in China is met.
Disclosure of Invention
In view of the above, the invention aims to provide a high-strength solid welding wire special for 100 kg-grade T/P960E steel pipes, the solid welding wire can meet the welding requirements of TP960E steel pipes, the weld bead is attractive in shape, the mechanical property of the weld joint is excellent, the corrosion resistance is good, and the welding quality can be ensured. The method is also suitable for other 1000MPa grade high-strength steel.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a100 kg grade T/P960E steel tube special use high strength solid welding wire, include the following mass percent component, C is less than or equal to 0.1%, Mn 1.0% -2.0%, Si is less than or equal to 1.0%, Ni 2.0% -5.0%, Ti is less than or equal to 0.1%, Cr is less than or equal to 1.0%, Mo 0.5% -1.5%, Nb is less than or equal to 0.1%, Re is less than or equal to 0.1%, Cu is less than or equal to 0.30%, other impurity content is less than or equal to 0.1%; the balance of Fe, and the sum of the mass percentages of the components is 100%.
Preferably, the alloy comprises the following components, by mass, 0.05-0.085% of C, 1.30-1.80% of Mn, 0.35-0.60% of Si, 3.0-4.5% of Ni, 0.02-0.07% of Ti, 0.20-0.60% of Cr, 0.55-0.8% of Mo, 0.02-0.045% of Nb, 0.03-0.05% of Re, 0.25-0.30% of Cu, and the content of other impurities is less than or equal to 0.1%; the balance of Fe, and the sum of the mass percentages of the components is 100%.
Preferably, the diameter of the wire is 1.2mm ± 0.04 mm.
The invention provides a method for welding by using the high-strength solid welding wire special for the 100 kg-grade T/P960E steel pipe, wherein the current polarity DCEP, the welding current 180-240A, the welding voltage 22-26V and the protective gas Ar/Ar + O2。
The invention also provides the application of the solid welding wire in the welding of pipelines for oil-gas deep well operation.
The invention also provides application of the solid welding wire in welding of TP960E steel pipes.
The formula analysis of the invention:
c is a common element in metal materials and mainly plays a role in ensuring the strength in high-strength steel. But the content of the steel is too high, the steel can play a hardening effect on the structure, and the steel can play a role in counteracting the mechanical property of the high-strength steel.
Mn is a main strengthening and deoxidizing element, Mn + Si can effectively prevent oxygen in the air from entering a welding seam in a welding test, and Mn + Si is an effective deoxidizing element and can prevent the generation of welding seam pores. And the strength of the welding seam can be effectively improved by adding Mn element.
Ni is used for obtaining better low-temperature toughness, and the addition of Ni in the high-strength steel can well improve the low-temperature toughness of a welding seam and reduce the ductile-brittle transition temperature of the welding seam. In order to meet the engineering requirements of the TP960E steel pipe, the small content can not achieve good effect.
Mo is a main strengthening element, can effectively inhibit the generation of a structure in the direction of a coarse structure when a welded structure is formed, and is more favorable for transformation to the direction of lower bainite.
Ti is a deoxidizing element and can play a role in tissue refinement in high-strength steel, so that the toughness of a weld joint tissue can be improved.
Cr: cr element has certain solid solution strengthening effect and can improve the hardenability of the welding seam. When a certain amount of Cr is present in the steel, the weld hardness and strength may be increased, but when it is excessive, it may result in a decrease in ductility and toughness.
Si acts as a deoxidizing element and plays a role in deoxidation. Si also improves the processing property of weld metal, and the molten iron flow effect is better.
Cu can improve the hardenability and corrosion resistance of weld metal. The Cu element can also improve the conductivity of the weld metal, so that the electric arc is stable during welding.
One of the key points of the invention is that the Nb element is added, the Nb element can effectively strengthen the structure in the welding seam, and can effectively improve the mechanical property and the process property of the welding wire after welding due to the effects of fine grain strengthening and dispersion strengthening in high-strength steel.
One of the innovation points of the invention is that the Re element is added, the addition of the Re element can play a role in refining the structure, and the problem of component segregation and structural stress of a welding seam can be effectively solved.
Compared with the prior art, the high-strength solid welding wire special for the 100kg grade T/P960E steel pipe has the following advantages:
the high-strength solid welding wire special for the 100 kg-grade T/P960E steel pipe is added with a large amount of alloy elements to improve the strength and toughness of weld metal and ensure the mechanical property of the weld. Can effectively carry out the engineering welding of TP960E steel pipe.
Detailed Description
Unless defined otherwise, technical terms used in the following examples have the same meanings as commonly understood by one of ordinary skill in the art to which the present invention belongs. The test reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the experimental methods are conventional methods unless otherwise specified.
The present invention will be described in detail with reference to examples.
Examples
(1) The weight percentages of various raw materials in the welding wire are as follows: (%)
The balance being Fe.
(2) Welding wires are manufactured according to the components for detection, and according to the national standard, the welding wires are matched with a high-strength steel pipe TP960E for ray detection, ultrasonic detection and mechanical property detection. And (3) welding specification: the welding power source is in direct current reverse connection, and the temperature between channels is 145-150 ℃.
Detecting deposited metal rays: class I
Ultrasonic detection of deposited metal: qualified
Mechanical property of welding seam:
welding conditions are as follows:
| polarity of current | Wire diameter of welding wire | Welding current | Welding voltage | Protective gas | Welding position |
| DCEP | 1.2mm | 180-240A | 22-26V | Ar/Ar+O2 | Circumferential weld |
Through the welding test, the comprehensive performance of the invention is verified, and the following results are obtained:
(1) the composition control in the above-mentioned invention can ensure the welding mechanical property requirement of TP 960E.
(2) When the welding wire is used for welding, the welding bead is attractive in appearance, and has excellent technological performance and low-temperature toughness.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. The utility model provides a special high strength solid welding wire of 100kg grade T/P960E steel pipe which characterized in that: comprises the following components, by mass, less than or equal to 0.1% of C, 1.0-2.0% of Mn, less than or equal to 1.0% of Si, 2.0-5.0% of Ni, less than or equal to 0.1% of Ti, less than or equal to 1.0% of Cr, 0.5-1.5% of Mo, less than or equal to 0.1% of Nb, less than or equal to 0.1% of Re, less than or equal to 0.30% of Cu, and less than or equal to 0.1%; the balance of Fe, and the sum of the mass percentages of the components is 100%.
2. The high-strength solid welding wire special for the 100kg grade T/P960E steel pipe according to claim 1, wherein the high-strength solid welding wire comprises the following components in percentage by weight: comprises the following components, by mass, 0.05-0.085% of C, 1.30-1.80% of Mn1, 0.35-0.60% of Si, 3.0-4.5% of Ni, 0.02-0.07% of Ti, 0.20-0.60% of Cr0.20, 0.55-0.8% of Mo, 0.02-0.045% of Nb, 0.03-0.05% of Re, 0.25-0.30% of Cu, and the content of other impurities is less than or equal to 0.1%; the balance of Fe, and the sum of the mass percentages of the components is 100%.
3. The high-strength solid welding wire special for the 100kg grade T/P960E steel pipe according to claim 1, wherein the high-strength solid welding wire comprises the following components in percentage by weight: the diameter of the welding wire is 1.2mm +/-0.04 mm.
4. The welding method by using the high-strength solid welding wire special for the 100kg grade T/P960E steel pipe as defined in any one of claims 1-3 is characterized in that: current polarity DCEP, welding current180-240A, welding voltage of 22-26V, and protective gas Ar/Ar + O2。
5. Use of a solid welding wire according to any one of claims 1 to 3 in the welding of pipelines for deep oil and gas well operations.
6. Use of a solid welding wire according to any one of claims 1 to 3 in the welding of TP960E steel pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110179360.2A CN112935629A (en) | 2021-02-09 | 2021-02-09 | High-strength solid welding wire special for 100kg grade T/P960E steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110179360.2A CN112935629A (en) | 2021-02-09 | 2021-02-09 | High-strength solid welding wire special for 100kg grade T/P960E steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112935629A true CN112935629A (en) | 2021-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110179360.2A Pending CN112935629A (en) | 2021-02-09 | 2021-02-09 | High-strength solid welding wire special for 100kg grade T/P960E steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112935629A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115365697A (en) * | 2022-08-23 | 2022-11-22 | 中国船舶重工集团公司第七二五研究所 | Gas-shielded solid welding wire for polar low-temperature steel and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03268877A (en) * | 1990-03-16 | 1991-11-29 | Sumitomo Metal Ind Ltd | Manufacture of sulfide stress cracking resistant welded steel pipe for oil well |
| US6106643A (en) * | 1997-10-14 | 2000-08-22 | Inco Alloys International, Inc. | Hot working high-chromium alloy |
| CN1385279A (en) * | 2002-05-30 | 2002-12-18 | 燕山大学 | High-toughness welding wire adaptive for low carbon microalloy |
| CN101456104A (en) * | 2008-10-13 | 2009-06-17 | 攀钢集团研究院有限公司 | Flux-cored wire for building up cold-rolling middle roller working layer and preparation method thereof |
| CN101716706A (en) * | 2009-08-06 | 2010-06-02 | 江苏立新合金实业总公司 | High-strength alloy solid cored welding wire |
| CN102019516A (en) * | 2010-11-01 | 2011-04-20 | 西安理工大学 | Solder wire for submerged arc welding of X100 pipeline steel and preparation method thereof |
| CN102152025A (en) * | 2011-05-04 | 2011-08-17 | 武汉钢铁(集团)公司 | Gas shielded welding wire with 900MPa tensile strength |
| CN105414799A (en) * | 2015-12-23 | 2016-03-23 | 宜昌猴王焊丝有限公司 | Solid cored welding wire of low-alloy and high-strength steel and application of solid cored welding wire |
| CN111299904A (en) * | 2020-02-25 | 2020-06-19 | 江苏九洲新材料科技有限公司 | Stainless steel solid core surfacing welding wire and preparation method thereof |
-
2021
- 2021-02-09 CN CN202110179360.2A patent/CN112935629A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03268877A (en) * | 1990-03-16 | 1991-11-29 | Sumitomo Metal Ind Ltd | Manufacture of sulfide stress cracking resistant welded steel pipe for oil well |
| US6106643A (en) * | 1997-10-14 | 2000-08-22 | Inco Alloys International, Inc. | Hot working high-chromium alloy |
| CN1385279A (en) * | 2002-05-30 | 2002-12-18 | 燕山大学 | High-toughness welding wire adaptive for low carbon microalloy |
| CN101456104A (en) * | 2008-10-13 | 2009-06-17 | 攀钢集团研究院有限公司 | Flux-cored wire for building up cold-rolling middle roller working layer and preparation method thereof |
| CN101716706A (en) * | 2009-08-06 | 2010-06-02 | 江苏立新合金实业总公司 | High-strength alloy solid cored welding wire |
| CN102019516A (en) * | 2010-11-01 | 2011-04-20 | 西安理工大学 | Solder wire for submerged arc welding of X100 pipeline steel and preparation method thereof |
| CN102152025A (en) * | 2011-05-04 | 2011-08-17 | 武汉钢铁(集团)公司 | Gas shielded welding wire with 900MPa tensile strength |
| CN105414799A (en) * | 2015-12-23 | 2016-03-23 | 宜昌猴王焊丝有限公司 | Solid cored welding wire of low-alloy and high-strength steel and application of solid cored welding wire |
| CN111299904A (en) * | 2020-02-25 | 2020-06-19 | 江苏九洲新材料科技有限公司 | Stainless steel solid core surfacing welding wire and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115365697A (en) * | 2022-08-23 | 2022-11-22 | 中国船舶重工集团公司第七二五研究所 | Gas-shielded solid welding wire for polar low-temperature steel and application thereof |
| CN115365697B (en) * | 2022-08-23 | 2024-05-14 | 中国船舶重工集团公司第七二五研究所 | Gas shielded solid welding wire for polar region low-temperature steel and application thereof |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210611 |
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