CN110625289A - Tungsten electrode argon arc welding wire for welding Mn-Mo-Ni steel of nuclear island main equipment - Google Patents
Tungsten electrode argon arc welding wire for welding Mn-Mo-Ni steel of nuclear island main equipment Download PDFInfo
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- CN110625289A CN110625289A CN201910727130.8A CN201910727130A CN110625289A CN 110625289 A CN110625289 A CN 110625289A CN 201910727130 A CN201910727130 A CN 201910727130A CN 110625289 A CN110625289 A CN 110625289A
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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
-
- 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
- B23K35/3073—Fe as the principal constituent with Mn 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
- B23K35/40—Making wire or rods for soldering or welding
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a tungsten electrode argon arc welding wire for welding Mn-Mo-Ni steel of a nuclear island main device, which comprises the following components in percentage by mass: c is less than or equal to 0.12%, Si is less than or equal to 0.60%, Mn: 1.20-1.80%, S is less than or equal to 0.010%, P is less than or equal to 0.010%, Cu is less than or equal to 0.05%, Ni is less than or equal to 0.90%, Cr is less than or equal to 0.10%, Mo: 0.40-0.60%, V is less than or equal to 0.05%, Nb is less than or equal to 0.01%, Al is less than or equal to 0.01%, Co is less than or equal to 0.02%, B is less than or equal to 0.0005%, O is less than or equal to 0.003%, N is less than or equal to 0.006%, and the balance of Fe and unavoidable trace elements. The welding wire is a copper-free welding wire, has good appearance quality, meets the requirement of uniform and continuous wire feeding on automatic and semi-automatic welding machines, and has good anti-corrosion performance. The welding process is stable, the splashing is small, the forming is attractive, the welding defects such as slag inclusion, air holes and incomplete fusion are avoided, the welding manufacturability of manual and mechanical TIG welding is excellent, the comprehensive performance of obdurability is excellent, and the welding use of Mn-Mo-Ni steel of the nuclear island main equipment is met.
Description
Technical Field
The invention relates to a welding wire, in particular to a tungsten electrode argon arc welding wire for welding Mn-Mo-Ni steel of a nuclear island main device.
Background
The localization of the welding material for the nuclear island main equipment is an important link for realizing the localization of the nuclear island main equipment. At present, the localization degree of steel for nuclear island equipment is higher, but the localization degree of high-end welding materials is lower, and the steel depends on import for a long time.
The service environment of the nuclear island main equipment is harsh (high irradiation environment, high temperature, high pressure and boron-containing water), the service life is as long as 60 years, and the requirements on the conventional and special properties of the Mn-Mo-Ni low alloy steel welding material are high, including non-plastic transformation temperature, impact toughness, irradiation sensitivity, fracture toughness and the like at series temperature. At present, the related technical report of the argon tungsten-arc welding wire for Mn-Mo-Ni steel welding is not seen.
Disclosure of Invention
According to the technical problems, the tungsten electrode argon arc welding wire for welding the Mn-Mo-Ni steel of the nuclear island main equipment is provided. The technical means adopted by the invention are as follows:
a tungsten electrode argon arc welding wire for welding Mn-Mo-Ni steel of nuclear island main equipment comprises the following components in percentage by mass:
c is less than or equal to 0.12%, Si is less than or equal to 0.60%, Mn: 1.20-1.80%, S is less than or equal to 0.010%, P is less than or equal to 0.010%, Cu is less than or equal to 0.05%, Ni is less than or equal to 0.90%, Cr is less than or equal to 0.10%, Mo: 0.40-0.60%, V is less than or equal to 0.05%, Nb is less than or equal to 0.01%, Al is less than or equal to 0.01%, Co is less than or equal to 0.02%, B is less than or equal to 0.0005%, O is less than or equal to 0.003%, N is less than or equal to 0.006%, and the balance of Fe and unavoidable trace elements.
Except elements C, Si, Mn, S, P, Cu, Ni, Cr, Mo, V and Fe, the sum of the chemical components of the other elements is not more than 0.25 percent by mass. The preparation method of the tungsten electrode argon arc welding wire for welding the Mn-Mo-Ni steel of the nuclear island main equipment can be prepared according to the following steps:
(1) smelting and preparing billet
An electric furnace, external refining and vacuum degassing smelting are used for preparing steel ingots, and the steel ingots comprise the following basic chemical components in percentage by mass: c is less than or equal to 0.12%, Si is less than or equal to 0.60%, Mn: 1.20-1.80%, S is less than or equal to 0.010%, P is less than or equal to 0.010%, Cu is less than or equal to 0.05%, Ni is less than or equal to 0.90%, Cr is less than or equal to 0.10%, Mo: 0.40-0.60%, V is less than or equal to 0.05%, Nb is less than or equal to 0.01%, Al is less than or equal to 0.01%, Co is less than or equal to 0.02%, B is less than or equal to 0.0005%, O is less than or equal to 0.003%, N is less than or equal to 0.006%, the balance is Fe and unavoidable trace elements, and the sum of the mass percentages of chemical components of other elements except C, Si, Mn, S, P, Cu, Ni, Cr, Mo, V and Fe is less than or equal to 0.25%. (2) And forging, cogging, rolling and annealing the steel ingot to finish the manufacture of a wire rod with the diameter of 5.5mm, wherein the quality of the wire rod meets the requirement of continuous drawing manufacture of welding wires. After rust removal, the wire rod is subjected to rough drawing, medium drawing, fine drawing and multi-pass cold drawing and annealing treatment, copper plating-free treatment is carried out on the surface of the welding wire, and the welding wire is wound and packaged in layers, so that the preparation of the welding wire with the diameter of 1.2mm is finally completed.
In the invention, the welding wire can be smelted and produced by a vacuum induction furnace, or can be smelted and produced by an electric furnace, external refining and a vacuum degassing method, as long as the final chemical components of the welding wire can meet the requirements of the invention.
A tungsten electrode argon arc welding wire for welding Mn-Mo-Ni steel of nuclear island main equipment adopts a tungsten electrode argon arc welding (TIG) welding process:
mechanical TIG welding; current type/polarity: DC/SP (direct current/direct current); welding current: peak value 240-; the welding voltage is 10-15V; the welding speed is 90-160 mm/min; protective gas Ar (the purity is more than 99.99 percent), and the gas flow is 10-25L/min; preheating, the interlayer temperature is 150 ℃ and 250 ℃.
The chemical components of the final cladding metal are as follows: c is less than or equal to 0.12%, Si is less than or equal to 0.60%, Mn: 1.20-1.80%, S is less than or equal to 0.010%, P is less than or equal to 0.010%, Cu is less than or equal to 0.05%, Ni is less than or equal to 0.90%, Cr is less than or equal to 0.10%, Mo: 0.40-0.60%, V is less than or equal to 0.05%, Nb is less than or equal to 0.01%, Al is less than or equal to 0.01%, Co is less than or equal to 0.02%, B is less than or equal to 0.0005%, O is less than or equal to 0.003%, N is less than or equal to 0.006%, and the sum of the chemical components of other elements except C, Si, Mn, S, P, Cu, Ni, Cr, Mo, V and Fe in percentage by mass is not more than 0.25%.
The invention has the following advantages:
the welding wire has low contents of S, P and other impurity elements and gas elements, and reasonable design of C, Si, Mn, Ni, Mo, Cr and other alloy systems, and through experiments, the welding wire has excellent toughness and meets the requirements on comprehensive performance, and can be used for welding Mn-Mo-Ni steel of a nuclear island main device.
The welding wire is a copper-free welding wire, has good appearance quality, meets the requirement of uniform and continuous wire feeding on automatic and semi-automatic welding machines, and has good anti-corrosion performance. The welding process is stable, the splashing is small, the forming is attractive, the welding defects such as slag inclusion, air holes and incomplete fusion are avoided, the welding manufacturability of manual and mechanical TIG welding is excellent, and the welding use of Mn-Mo-Ni steel of the nuclear island main equipment is met. The welding wire can be specially used for argon tungsten-arc welding of Mn-Mo-Ni steel of a nuclear island main device, and can also be used for other container devices made of Mn-Mo-Ni steel.
For the reasons, the invention can be widely popularized in the fields of welding wires and the like.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A tungsten electrode argon arc welding wire for welding Mn-Mo-Ni steel of nuclear island main equipment comprises the following components in percentage by mass:
c is less than or equal to 0.12%, Si is less than or equal to 0.60%, Mn: 1.20-1.80%, S is less than or equal to 0.010%, P is less than or equal to 0.010%, Cu is less than or equal to 0.05%, Ni is less than or equal to 0.90%, Cr is less than or equal to 0.10%, Mo: 0.40-0.60%, V is less than or equal to 0.05%, Nb is less than or equal to 0.01%, Al is less than or equal to 0.01%, Co is less than or equal to 0.02%, B is less than or equal to 0.0005%, O is less than or equal to 0.003%, N is less than or equal to 0.006%, and the balance of Fe and unavoidable trace elements.
Except elements C, Si, Mn, S, P, Cu, Ni, Cr, Mo, V and Fe, the sum of the chemical components of the other elements is not more than 0.25 percent by mass.
The welding wire can be prepared by the following method:
(1) smelting and preparing billet
An electric furnace, external refining and vacuum degassing smelting are used for preparing steel ingots, and the steel ingots comprise the following basic chemical components in percentage by mass: c is less than or equal to 0.12%, Si is less than or equal to 0.60%, Mn: 1.20-1.80%, S is less than or equal to 0.010%, P is less than or equal to 0.010%, Cu is less than or equal to 0.05%, Ni is less than or equal to 0.90%, Cr is less than or equal to 0.10%, Mo: 0.40-0.60%, V is less than or equal to 0.05%, Nb is less than or equal to 0.01%, Al is less than or equal to 0.01%, Co is less than or equal to 0.02%, B is less than or equal to 0.0005%, O is less than or equal to 0.003%, N is less than or equal to 0.006%, the balance is Fe and unavoidable trace elements, and the sum of the mass percentages of chemical components of other elements except C, Si, Mn, S, P, Cu, Ni, Cr, Mo, V and Fe is less than or equal to 0.25%. (2) And forging, cogging, rolling and annealing the steel ingot to finish the manufacture of a wire rod with the diameter of 5.5mm, wherein the quality of the wire rod meets the requirement of continuous drawing manufacture of welding wires. After rust removal, the wire rod is subjected to rough drawing, medium drawing, fine drawing and multi-pass cold drawing and annealing treatment, copper plating-free treatment is carried out on the surface of the welding wire, and the welding wire is wound and packaged in layers, so that the preparation of the welding wire with the diameter of 1.2mm is finally completed.
In order to show the excellent performance of the welding wire, the following comparative experiments are carried out:
the contrast experiment adopts the welding wire and a certain similar imported welding wire for contrast, and the object of the experiment is a welding test plate;
welding a test plate: carbon steel board + isolation layer, 700mm 300mm 20mm, backing plate thickness is 10mm, root clearance 16mm, groove angle 20.
The welding method comprises the following steps: mechanical TIG welding; current type/polarity: DC/SP (direct current/direct current); welding current: peak current 280A, base current 170A; the welding voltage is 11-12V; the welding speed is 90-160 mm/min; argon flow is 10-25L/min; the interlayer temperature is 150 ℃ and 250 ℃.
Preparing a welding part according to the welding method, and testing the mechanical property and the impact toughness of the cladding metal to obtain the following comparison results:
TABLE 1 cladding Metal mechanical Properties
TABLE 2 impact toughness of clad metals
As can be seen from tables 1 and 2:
the various cladding metal performances of the welding wire provided by the invention are not lower than those of the imported welding wire, and even higher than those of the imported welding wire.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (2)
1. A tungsten electrode argon arc welding wire for welding Mn-Mo-Ni steel of nuclear island main equipment is characterized by comprising the following components in percentage by mass:
c is less than or equal to 0.12%, Si is less than or equal to 0.60%, Mn: 1.20-1.80%, S is less than or equal to 0.010%, P is less than or equal to 0.010%, Cu is less than or equal to 0.05%, Ni is less than or equal to 0.90%, Cr is less than or equal to 0.10%, Mo: 0.40-0.60%, V is less than or equal to 0.05%, Nb is less than or equal to 0.01%, Al is less than or equal to 0.01%, Co is less than or equal to 0.02%, B is less than or equal to 0.0005%, O is less than or equal to 0.003%, N is less than or equal to 0.006%, and the balance of Fe and unavoidable trace elements.
2. The tungsten argon arc welding wire for welding the Mn-Mo-Ni steel of the nuclear island main equipment according to claim 1, which is characterized in that: except elements C, Si, Mn, S, P, Cu, Ni, Cr, Mo, V and Fe, the sum of the chemical components of the other elements is not more than 0.25 percent by mass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910727130.8A CN110625289A (en) | 2019-08-07 | 2019-08-07 | Tungsten electrode argon arc welding wire for welding Mn-Mo-Ni steel of nuclear island main equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910727130.8A CN110625289A (en) | 2019-08-07 | 2019-08-07 | Tungsten electrode argon arc welding wire for welding Mn-Mo-Ni steel of nuclear island main equipment |
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| CN110625289A true CN110625289A (en) | 2019-12-31 |
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| CN201910727130.8A Pending CN110625289A (en) | 2019-08-07 | 2019-08-07 | Tungsten electrode argon arc welding wire for welding Mn-Mo-Ni steel of nuclear island main equipment |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001001181A (en) * | 1999-04-15 | 2001-01-09 | Kawasaki Steel Corp | Wire for gas shielded arc welding |
| CN102528318A (en) * | 2010-12-17 | 2012-07-04 | 鞍钢股份有限公司 | Gas shield welding wire for nuclear power |
| CN102649203A (en) * | 2012-05-24 | 2012-08-29 | 宝山钢铁股份有限公司 | Gas shielded welding wire and coil rod, with low cost, for nuclear power containment shell |
| CN104907726A (en) * | 2014-03-10 | 2015-09-16 | 株式会社神户制钢所 | Solid wire for gas metal arc welding |
| CN108941975A (en) * | 2018-09-18 | 2018-12-07 | 天津市永昌焊丝有限公司 | A kind of nuclear power manganese nickel molybdenum low-alloy high-strength steel high tenacity gas tungstun arc welding silk |
-
2019
- 2019-08-07 CN CN201910727130.8A patent/CN110625289A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001001181A (en) * | 1999-04-15 | 2001-01-09 | Kawasaki Steel Corp | Wire for gas shielded arc welding |
| CN102528318A (en) * | 2010-12-17 | 2012-07-04 | 鞍钢股份有限公司 | Gas shield welding wire for nuclear power |
| CN102649203A (en) * | 2012-05-24 | 2012-08-29 | 宝山钢铁股份有限公司 | Gas shielded welding wire and coil rod, with low cost, for nuclear power containment shell |
| CN104907726A (en) * | 2014-03-10 | 2015-09-16 | 株式会社神户制钢所 | Solid wire for gas metal arc welding |
| CN108941975A (en) * | 2018-09-18 | 2018-12-07 | 天津市永昌焊丝有限公司 | A kind of nuclear power manganese nickel molybdenum low-alloy high-strength steel high tenacity gas tungstun arc welding silk |
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Application publication date: 20191231 |