CN113020839A - Novel Ni-Cr-Mo type nickel-based welding wire with excellent manufacturability - Google Patents
Novel Ni-Cr-Mo type nickel-based welding wire with excellent manufacturability Download PDFInfo
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- CN113020839A CN113020839A CN202110292899.9A CN202110292899A CN113020839A CN 113020839 A CN113020839 A CN 113020839A CN 202110292899 A CN202110292899 A CN 202110292899A CN 113020839 A CN113020839 A CN 113020839A
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- 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
- B23K35/3033—Ni as the principal constituent
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- 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
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- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention provides a novel Ni-Cr-Mo type nickel-based welding wire with excellent manufacturability, which comprises the following components, by mass, less than or equal to 0.05% of C, 0.35-1.0% of Mn, 4.0-7.0% of Fe, 0.08-0.50% of Si, 1.0-2.5% of Co, 14.5-16.5% of Cr, less than or equal to 0.35% of V, 0.15-0.5% of Cu, 3.0-4.5% of W, 15.0-17.0% of Mo, and the balance of Ni and inevitable impurities, wherein the sum of the mass fractions of the components is 100%. The welding wire can meet the welding requirements of storage tanks such as LNG (liquefied natural gas), LEG (Long-LEG gas), liquid nitrogen, liquid oxygen and the like, and the welding bead is attractive in forming, good in technological property, excellent in welding seam mechanical property at ultralow temperature, better in corrosion resistance and capable of ensuring the welding quality.
Description
Technical Field
The invention belongs to the technical field of welding materials, and particularly relates to a novel Ni-Cr-Mo type nickel-based welding wire with excellent manufacturability.
Background
In recent years, the nation speeds up the pace of controlling atmospheric pollution, strives to win the blue sky guard war, and builds beautiful China. The steady promotion of various environmental protection policies promotes the rapid transformation of energy structure of China towards clean energy.
Natural gas is increasingly receiving high attention as the most environmentally friendly clean energy source. Internationally, the proportion of natural gas in a primary energy consumption structure is 23%, while the proportion of natural gas in China is only 7.8%, so that the natural gas has a great development space. With the increasing proportion of natural gas in energy consumption, 6000 billion cubic meters of natural gas are predicted to be consumed in 2030, wherein about 40% of imported LNG (liquefied natural gas) and 2400 billion cubic meters (about 17150 ten million tons) are consumed.
LNG (-163 ℃ LNG) volume is 1/600 at normal temperature, and cryogenic storage and transportation are the most economical means and the most convenient and efficient means to meet peak shaving and interruption.
In 2003, the liquefied natural gas receiving station of the Guangdong Dapeng of China's offshore oil institute was first subjected to general engineering contract by the European STTS company, China began to build large LNG storage tanks successively, 9% Ni (06Ni9DR) steel plates and welding materials thereof for the storage tanks began to be imported from abroad, and with the increase of the number of the built steel plates, the 9% Ni steel for the large LNG storage tanks as the LNG receiving station also began to be subjected to localization research. Nanjing Steel company, Anshan Steel company, Taiyuan Steel company, Bao Steel group, Danyang Steel company, Zhongxing Cheng Steel company, Laiwu Steel company, Chuqin Steel company, etc. developed 9% Ni steel plates in sequence, and most of them passed the technical review of the national pressure vessel standardization technical Committee organization. Among them, 9% Ni steel plates manufactured by nanjing steel company, sadan steel company, taiyuan steel company, bao steel group, zhongxing Cheng steel company, etc. have been used in domestic LNG storage tanks. Since 2013, domestic 9% Ni steel plates gradually replace imported steel plates, and the 9% Ni steel plates for large LNG storage tanks are completely domestic at present. However, up to now, all welding materials for 9% Ni steel plates have required import.
The welding material for 9% Ni steel is a special Ni-based welding material, the import supply period is long, the price is high, the domestic LNG large-scale project is often limited by people, and a large amount of profits are captured abroad. Therefore, the task of developing high-end welding materials for large-scale LNG storage tanks with proprietary intellectual property rights is urgent. In view of the increasing demand of clean fuel natural gas in China, a plurality of large LNG storage tanks need to be built in the future, and the localization of welding materials is urgent. The localization of the 9% Ni steel welding material is realized, the enterprise brand of the welding material in China can be promoted, the technical level of the high-end welding material in China is improved, and the restriction of foreign products and technologies to China is eliminated.
Disclosure of Invention
In view of the above, the invention aims to provide a novel Ni-Cr-Mo type nickel-based welding wire with excellent manufacturability so as to overcome the defects in the prior art, the welding wire can meet the welding requirements of storage tanks such as LNG, LEG, liquid nitrogen, liquid oxygen and the like, the welding bead is attractive in forming, the technological performance is good, the mechanical property of the welding bead at ultralow temperature is excellent, the corrosion resistance is good, and the welding quality can be ensured.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a novel Ni-Cr-Mo type nickel-based welding wire with excellent manufacturability comprises the following components in percentage by mass, C is less than or equal to 0.05%, Mn is 0.35-1.0%, and Fe: 4.0-7.0 percent of Ni, 0.08-0.50 percent of Si, 1.0-2.5 percent of Co, 14.5-16.5 percent of Cr, less than or equal to 0.35 percent of V, 0.15-0.5 percent of Cu, 3.0-4.5 percent of W, 15.0-17.0 percent of Mo, the balance of Ni and inevitable impurities, wherein the sum of the mass fractions of the components is 100 percent.
Preferably, the alloy comprises the following components, by mass, 0.02-0.04% of C, 0.5-0.7% of Mn, 5.0-6.0% of Fe, 0.1-0.2% of Si, 1.0-2.0% of Co, 15.0-16.0% of Cr, 0.1-0.25% of V, 0.2-0.35% of Cu, 3.0-3.5% of W, 15.0-16.0% of Mo, and the balance of Ni and unavoidable impurities, wherein the sum of the mass fractions of the components is 100%.
Preferably, the diameter of the nickel-based welding wire is 1.2mm +/-0.04 mm.
The invention also provides a method for using the sameThe novel Ni-Cr-Mo type nickel-based welding wire with excellent manufacturability is used for welding, and comprises the following steps of current polarity DCEP, welding current 180-240A, welding voltage 22-26V and protective gas Ar/Ar + O2。
The invention also provides the application of the nickel-based welding wire in the welding of LNG, LEG, liquid nitrogen or liquid oxygen storage tanks.
The invention also provides the application of the nickel-based welding wire in 9Ni steel plate welding.
Preferably, the post-weld is used at ambient temperature-163 ℃.
The formula analysis of the invention:
c is one of main elements in weld metal, and can improve the strength of the weld metal to a certain extent, but the welding manufacturability is influenced by too high content.
Mn is an element which mainly strengthens and plays roles in desulfurization and deoxidation, can expand an austenite region, but is not too high, and the toughness of the weld metal is reduced due to the too high content of Mn.
Si as deoxidizing element, reacting with oxygen to form Si02And the function of deoxidation is achieved. Si element is also the main element for improving the flow process performance of the welding molten iron. The proper amount of Si can improve the processing performance of the welding material to a certain extent.
Cr is a ferrite forming element, can reduce the structure phase transition temperature, has a certain solid solution strengthening effect, and can improve the hardenability of the welding seam. And the Cr element is a corrosion-resistant element, so that a welded joint has certain corrosion resistance after welding.
Mo promotes acicular ferrite to generate, so that the overall mechanical property and low-temperature toughness of the weld joint are greatly improved, but the Mo content is too high, strong solid solution strengthening can be generated, and the impact toughness of weld joint metal is reduced.
Ni is an austenite stabilizing element and can improve the low-temperature impact toughness of the weld metal. With the increase of the content of the Ni element, the weld joint of the high-strength steel is changed from a structure with lath bainite and martensite as main parts into a mixed structure of martensite and bainite with finer laths, the strength of the weld joint is increased, and good low-temperature toughness is kept.
V: v and C form VC, and tiny VC can play certain hindrance effect to the dislocation, improves the intensity of welding seam, but more V content can form the VC granule of alligatoring, reduces impact property.
The addition of a small amount of Al to the steel can reduce the oxygen and nitrogen levels, refine the crystal grains and improve the impact toughness.
The addition of Co element can improve the comprehensive mechanical property of the welding seam, and especially greatly improve the ductility and toughness. Can also improve the oxidation resistance of the welding line and improve the process performance.
The addition of W element can maintain the wear resistance of the welding seam, and the lasting strength and hardness at high temperature.
The addition of Cu element can improve the corrosion capability of the material to a certain extent and can improve the strength of the welding seam.
Compared with the prior art, the novel Ni-Cr-Mo nickel-based welding wire with excellent manufacturability has the following advantages:
the Ni-Cr-Mo type nickel-based welding wire with good manufacturability can optimize the technological property of the existing welding wire and can be used in an ultralow temperature environment.
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
The welding wire is produced by adopting advanced and automatic welding wire production equipment, and the performance and the components of the welding wire refer to GB/T15620.
(1) The weight percentages of various raw materials in the welding wire are as follows: (%) (balance Ni)
| Element(s) | C | Mn | Fe | Si | Cu | Co | Mo | V | Cr | W |
| Example one | 0.04 | 0.51 | 5.6 | 0.18 | 0.31 | 1.8 | 15.5 | 0.18 | 15.5 | 3.2 |
| Example two | 0.03 | 0.60 | 5.4 | 0.16 | 0.23 | 1.2 | 15.2 | 0.21 | 15.4 | 3.5 |
| EXAMPLE III | 0.04 | 0.65 | 5.5 | 0.15 | 0.27 | 1.1 | 15.7 | 0.157 | 16.0 | 3.4 |
(2) The mechanical property of the welding seam is as follows:
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 | PA |
Through the welding test, the comprehensive performance of the invention is verified, and the following results are obtained:
(1) the welding wire has good molten iron fluidity, beautiful welding bead forming and very good manufacturability.
(2) The welding wire has good comprehensive performance of welding seams.
The Ni-Cr-Mo type nickel-based welding wire has good manufacturability, good molten iron fluidity, attractive weld bead forming appearance, very good manufacturability, capability of ensuring welding quality and better mechanical property at the temperature of minus 192 ℃.
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 (7)
1. A novel Ni-Cr-Mo type nickel-based welding wire with excellent manufacturability is characterized in that: the steel comprises the following components in percentage by mass, C is less than or equal to 0.05%, Mn is 0.35-1.0%, and Fe: 4.0-7.0 percent of Ni, 0.08-0.50 percent of Si, 1.0-2.5 percent of Co, 14.5-16.5 percent of Cr, less than or equal to 0.35 percent of V, 0.15-0.5 percent of Cu, 3.0-4.5 percent of W, 15.0-17.0 percent of Mo, the balance of Ni and inevitable impurities, wherein the sum of the mass fractions of the components is 100 percent.
2. The novel Ni-Cr-Mo type nickel-based welding wire with excellent manufacturability according to claim 1, characterized in that: the alloy comprises, by mass, 0.02-0.04% of C, 0.5-0.7% of Mn, 5.0-6.0% of Fe, 0.1-0.2% of Si, 1.0-2.0% of Co, 15.0-16.0% of Cr, 0.1-0.25% of V, 0.2-0.35% of Cu, 3.0-3.5% of W, 15.0-16.0% of Mo, and the balance of Ni and unavoidable impurities, wherein the sum of the mass fractions of the components is 100%.
3. The novel Ni-Cr-Mo type nickel-based welding wire with excellent manufacturability according to claim 1, characterized in that: the diameter of the nickel-based welding wire is 1.2mm +/-0.04 mm.
4. A method of welding using the novel Ni-Cr-Mo type nickel-based welding wire excellent in manufacturability as set forth in any one of claims 1 to 3, characterized in that: current polarity DCEP, welding current 180-2。
5. Use of the nickel-based welding wire according to any one of claims 1 to 3 for storage tank welding of LNG, LEG, liquid nitrogen or liquid oxygen.
6. Use of the nickel-based welding wire according to any one of claims 1 to 3 for 9Ni steel plate welding.
7. Use according to claim 5 or 6, characterized in that the use is carried out after welding at ambient temperature-163 ℃.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110292899.9A CN113020839A (en) | 2021-03-18 | 2021-03-18 | Novel Ni-Cr-Mo type nickel-based welding wire with excellent manufacturability |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110292899.9A CN113020839A (en) | 2021-03-18 | 2021-03-18 | Novel Ni-Cr-Mo type nickel-based welding wire with excellent manufacturability |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10230386A (en) * | 1997-02-20 | 1998-09-02 | Nippon Steel Corp | Gas shield arc welding wire |
| CN1993488A (en) * | 2004-08-02 | 2007-07-04 | 住友金属工业株式会社 | Weld joint and weld material thereof |
| CN106425160A (en) * | 2016-11-25 | 2017-02-22 | 上海大西洋焊接材料有限责任公司 | Nickel base welding rod for welding UNSN10276 nickel base alloy and preparation method thereof |
| CN107617809A (en) * | 2016-07-13 | 2018-01-23 | 株式会社神户制钢所 | Submerged arc soldering method |
| CN110446582A (en) * | 2018-03-27 | 2019-11-12 | 日本制铁株式会社 | The manufacturing method of Ni based alloy silk and welding point used for submerged arc welding |
| CN110560961A (en) * | 2019-10-12 | 2019-12-13 | 哈尔滨威尔焊接有限责任公司 | Ta and Nb composite nickel-based welding wire for nuclear power equipment and welding method |
| CN112453671A (en) * | 2020-11-23 | 2021-03-09 | 华能国际电力股份有限公司 | Welding method of IN738 nickel-based high-temperature alloy |
-
2021
- 2021-03-18 CN CN202110292899.9A patent/CN113020839A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10230386A (en) * | 1997-02-20 | 1998-09-02 | Nippon Steel Corp | Gas shield arc welding wire |
| CN1993488A (en) * | 2004-08-02 | 2007-07-04 | 住友金属工业株式会社 | Weld joint and weld material thereof |
| CN107617809A (en) * | 2016-07-13 | 2018-01-23 | 株式会社神户制钢所 | Submerged arc soldering method |
| CN106425160A (en) * | 2016-11-25 | 2017-02-22 | 上海大西洋焊接材料有限责任公司 | Nickel base welding rod for welding UNSN10276 nickel base alloy and preparation method thereof |
| CN110446582A (en) * | 2018-03-27 | 2019-11-12 | 日本制铁株式会社 | The manufacturing method of Ni based alloy silk and welding point used for submerged arc welding |
| CN110560961A (en) * | 2019-10-12 | 2019-12-13 | 哈尔滨威尔焊接有限责任公司 | Ta and Nb composite nickel-based welding wire for nuclear power equipment and welding method |
| CN112453671A (en) * | 2020-11-23 | 2021-03-09 | 华能国际电力股份有限公司 | Welding method of IN738 nickel-based high-temperature alloy |
Non-Patent Citations (2)
| Title |
|---|
| 上海格群信息科技有限公司: "《ERNiCrMo-3/625与ERNiCrMo-4/276镍基合金焊丝焊接注意事项》", 25 July 2015 * |
| 王宗杰等: "《工程材料焊接技术问答》", 机械工业出版社 * |
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