CN103737198A - Gas-shielded flux-cored wire for stainless steel welding - Google Patents

Gas-shielded flux-cored wire for stainless steel welding Download PDF

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Publication number
CN103737198A
CN103737198A CN201410016873.1A CN201410016873A CN103737198A CN 103737198 A CN103737198 A CN 103737198A CN 201410016873 A CN201410016873 A CN 201410016873A CN 103737198 A CN103737198 A CN 103737198A
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China
Prior art keywords
gas
cored wire
shielded flux
welding
flux
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CN201410016873.1A
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CN103737198B (en
Inventor
袁均山
赵佳
蒋勇
赵庆国
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SICHUAN ATLANTIC CHINA WELDING CONSUMABLES Inc
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SICHUAN ATLANTIC CHINA WELDING CONSUMABLES Inc
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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
    • 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
    • B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
    • B23K35/368—Selection of non-metallic compositions of core materials either alone or conjoint with selection of soldering or welding materials
    • 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
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys

Abstract

The invention provides a gas-shielded flux-cored wire for stainless steel welding and belongs to the field of welding materials. A flux core of the gas-shielded flux-cored wire is composed of, by weight, 1-6% of Mn, 0.1-5% of Si, 10-30% of Cr, 5-25% of Ni, 1-10% of Na2O and K2O, 0.1-2% of fluoride, 15-30% of TiO2 and the balance Fe, and filling rate of the flux core is 22-30%. The gas-shielded flux-cored wire is used for welding under the condition of pure CO2, and deposited metal after being welded is larger than or equal to 520Mpa in tensile strength and larger than or equal to 35% in elongation rate. The gas-shielded flux-cored wire is good in welding process performance, stable in electric arc, slight in spattering and attractive in welding seam formation, and vertical downward welding can be realized by adopting short circuit transition.

Description

A kind of gas-shielded flux-cored wire of stainless steel welding use
Technical field
The invention belongs to field of welding material, be specifically related to a kind of welding wire, particularly a kind of gas-shielded flux-cored wire of stainless steel welding use.
Background technology
In recent years, along with economic fast development, stainless steel industry is also developed faster.The strong growth of stainless steel consumption figure, will drive the rapid growth that welds market: on the one hand, the quality progress of steel impels the update of stainless steel welding material; On the other hand, efficient (automation) process of stainless steel welding obviously raises speed, and impels the breed structure readjustment paces of welding material to accelerate.
Compared with traditional stick electrode, copper plating solid core welding wire, submerged arc welding flux, adopt stainless flux-cored wire to weld and there is obvious advantage, one, welding process is more continuous, and can realize automatic welding, thereby reduced welding point, having improved greatly production efficiency, is 3-4 times of manual electric arc welding, and welding quality is good, save the energy, reduced integrated cost; Its two, there is not heating and rubescent phenomenon in stainless flux-cored wire, and it is minimum to splash, weld seam light is silvery white in color, postwelding does not generally need pickling, grinding and buffing; Its three, the medicinal powder in flux-cored wire all passes through high temperature and cures, moisture is few, welding before do not need dry, stomata sensitivity is lower.So stainless flux-cored wire is widely used in the industries such as shipbuilding, petrochemical industry, pressure vessel, steel construction and engineering machinery.
Therefore, along with quick, stable, the sustainable development of economy, the demand rapid growth of market to stainless steel material, also increasing to the demand of stainless flux-cored wire, develop, develop flux core welding wire a kind of and that stainless steel is supporting, it being met cheaply in situation, also have that welding technological properties is good, an arc stability, the feature little, appearance of weld is attractive in appearance of splashing, is very important research topic.
Summary of the invention
A gas-shielded flux-cored wire for stainless steel welding use, comprises stainless steel crust and medicine core, it is characterized in that, described medicine core comprises the component of following percentage by weight:
Mn:1-6%; Si:0.1-5%; Cr:10-30%; Ni:5-25%; Na 2o and K 2the total amount of O: 1-10%; Fluoride: 0.1-2%; TiO 2: 15-30%; Fe: surplus;
The filling rate of described medicine core is 22-30%.
Preferably, described Si joins in medicine core with the form of ferrosilicon.
Preferably, described fluoride is one or more the combination in sodium fluoride, prodan, potassium fluosilicate and cryolite.
Preferably, described TiO 2with the form of natural rutile, join in medicine core.
Preferably, described stainless steel crust comprises the component of following percentage by weight:
C:0.01-0.1%; Mn:0.5-1.5%; Si:0.1-1%; S:0.005-0.015%; P:0.005-0.035%; Cr:15-25%; Ni:5-15%; Fe: surplus.
Preferably, the thickness of described stainless steel crust is 0.3-0.5mm.
Preferably, the diameter of described gas-shielded flux-cored wire is 1.0-1.6mm.
Preferably, described gas-shielded flux-cored wire is at CO 2protection gas under weld.
Design of the present invention is as follows:
Manganese metal: manganese is important deoxidier is also the important alloying constituent of weld metal simultaneously.Intensity and the toughness of Resistance of Weld Metal have material impact.Manganese can reduce austenite to ferritic transformation temperature, promotes the strong ferrite of AF(pin) form.The increase of manganese content can improve the low-temperature impact toughness of weld seam, but contrary when too high.The ratio of Mn and Si is controlled at 3-8 simultaneously.Manganese can also form MnS with sulphur, reduces the impurity content of weld seam.Test of many times determine Mn content approximately when (1-6%) performance better.
Ferrosilicon: silicon is that important deoxidier is also the important alloying constituent of weld metal simultaneously.Silicon can reduce the oxygen content of weld metal, improves the impact flexibility of weld metal, but contrary when too high.Adopt silicomanganese combined deoxidation, test of many times is determined Si content better performances when (0.1-5%).
Magnesium powder: magnesium is strong deoxidier, plays an important role to controlling the oxygen content of weld metal, can play the effect of stabilising arc simultaneously, but can increase weld fumes during its too high levels, is unfavorable for welder's health.When its content is controlled at (0.1-5%), performance is good.
Crome metal: chromium is conventional alloying constituent, chromium is medium carbide former, and in all various carbide, chromium carbide is the most tiny one, and it can be evenly distributed in steel volume, plays the left and right of crystal grain thinning.Under short time heating, there is the effect of the grain growth of obstruction, so can reduce overheated sensitlzing effect.Proportion control performance when 10-30% that crome metal accounts for medicine core is good.
Nickel powder: nickel can significantly improve weld metal intensity, has the effect of crystal grain thinning, can reduce the overheated tendentiousness of steel, improves intensity, hardness, heat endurance.Reduce temper brittleness, but too high meeting affect weld metal toughness.In order to control the nickel content that is transitioned into weld metal, when nickel powder is controlled at (5-25%), performance is good.
Na 2o, K 2o: as the arc stabilizer in formula.Mainly from K 2tiO 3, K 2siO 3, Na 2siO 3, albite and potassic feldspar.Na 2o, K 2o increase, arc stability increase, be spray transfer, droplet size reduces, electric arc sound improves.While being controlled at (1-10%), performance is good.
Fluoride: select a kind of and multiple in sodium fluoride, prodan, potassium fluosilicate, oryolite.Reduce the diffusible hydrogen content of deposited metal.Too high levels, electric arc shakiness, splashing becomes large, electric arc sound variation.While controlling the ratio (0.5-2%) of fluoride, performance is good.
Natural rutile: natural rutile is conventional slag former and arc stabilizer, and main component is TiO 2, content is more, and electric arc is more stable.When natural rutile ratio is (15-30%), performance is good.
Iron powder: improve welding efficiency and provide a small amount of oxygen for stabilising arc.In order to guarantee high deposition efficiency, iron powder is controlled at (surplus).
Compared with the prior art, the invention has the beneficial effects as follows:
1. with the deposited metal after gas-shielded flux-cored wire welding provided by the invention: tensile strength >=550Mpa, percentage elongation >=43%.And welding technological properties is good, arc stability, splash little, appearance of weld is attractive in appearance, adopts short circuiting transfer can realize vertical welding downwards.
2 these invention preparation technology of welding wire are simple, alloy system is reasonable in design, and welding wire integrated cost is low.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art further to understand the present invention, but not limit in any form the present invention.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
embodiment 1
Select the steel band of 10mm × 0.4mm, the silicon of the carbon of its chemical composition (by weight percentage) 0.01-0.1%, the manganese of 0.5-1.5%, 0.1-1%, the sulphur of 0.005-0.015%, the phosphorus of 0.005-0.035%, the chromium of 15-25%, the nickel of 5-15%, surplus are iron, medicine core forms percentage meter by weight, medicine core accounts for 25% of welding wire weight, the electrolytic manganese that the mass percent of medicine core composition is wherein 6%, 0.6% ferrosilicon, 0.4% magnesium powder, 18% crome metal, 16% nickel powder, 6% Na 2o, K 2the iron powder of O, 0.8% fluoride, 24% natural rutile, surplus.Welding parameter: I=200-220A, U=30-32V, gas flow 20L/min, pure CO 2gas.
Deposited metal composition (count by weight percentage, surplus is Fe) sees the following form:
C Mn Si S S P Cr Ni
0.025 1.33 0.50 0.002 0.012 18.78 9.67
Deposited metal mechanical performance (pure CO 2gas) see the following form:
embodiment 2
Select the steel band of 10mm*0.4mm, the silicon of the carbon of its chemical composition (by weight percentage) 0.01-0.1%, the manganese of 0.5-1.5%, 0.1-1%, the sulphur of 0.005-0.015%, the phosphorus of 0.005-0.035%, the chromium of 15-25%, the nickel of 5-15%, the iron of surplus, medicine core forms percentage meter by weight, medicine core accounts for 25% of welding wire weight, the electrolytic manganese that medicine core composition mass percent is wherein 5.4%, the ferrosilicon of 0.5 %, 0.3% magnesium powder, 18% crome metal, 17% nickel powder, 6% Na 2o, K 2the iron powder of O, 0.8% fluoride, 24% natural rutile, surplus.Welding parameter: I=200-220A, U=30-32V, gas flow 20L/min, pure CO 2gas.
Deposited metal composition (count by weight percentage, surplus is Fe) sees the following form:
C Mn Si S S P Cr Ni
0.022 1.30 0.52 0.002 0.012 18.87 10.08
Deposited metal mechanical performance (pure CO 2gas) see the following form:
embodiment 3
Select the steel band of 10mm*0.4mm, the silicon of the carbon of its chemical composition (by weight percentage) 0.01-0.1%, the manganese of 0.5-1.5%, 0.1-1%, the sulphur of 0.005-0.015%, the phosphorus of 0.005-0.035%, the chromium of 15-25%, the nickel of 5-15%, the iron of surplus, medicine core forms percentage meter by weight, medicine core accounts for 25% of welding wire weight, the electrolytic manganese that medicine core composition mass percent is wherein 7%, the ferrosilicon of 0.6 %, 0.3% magnesium powder, 18% crome metal, 17% nickel powder, 6% Na 2o, K 2the iron powder of O, 0.8% fluoride, 24% natural rutile, surplus.Welding parameter: I=200-220A, U=30-32V, gas flow 20L/min, pure CO 2gas
Deposited metal composition (count by weight percentage, surplus is Fe) sees the following form:
C Mn Si S S P Cr Ni
0.022 1.50 0.51 0.002 0.012 18.86 9.82
Deposited metal mechanical performance (pure CO 2gas) see the following form:
Figure 2014100168731100002DEST_PATH_IMAGE006

Claims (8)

1. a gas-shielded flux-cored wire for stainless steel welding use, comprises stainless steel crust and medicine core, it is characterized in that, described medicine core comprises the component of following percentage by weight:
Mn:1-6%; Si:0.1-5%; Cr:10-30%; Ni:5-25%; Na 2o and K 2the total amount of O: 1-10%; Fluoride: 0.1-2%; TiO 2: 15-30%; Fe: surplus;
The filling rate of described medicine core is 22-30%.
2. gas-shielded flux-cored wire according to claim 1, is characterized in that, described Si joins in medicine core with the form of ferrosilicon.
3. gas-shielded flux-cored wire according to claim 1, is characterized in that, described fluoride is one or more the combination in sodium fluoride, prodan, potassium fluosilicate and cryolite.
4. gas-shielded flux-cored wire according to claim 1, is characterized in that, described TiO 2with the form of natural rutile, join in medicine core.
5. gas-shielded flux-cored wire according to claim 1, is characterized in that, described stainless steel crust comprises the component of following percentage by weight:
C:0.01-0.1%; Mn:0.5-1.5%; Si:0.1-1%; S:0.005-0.015%; P:0.005-0.035%; Cr:15-25%; Ni:5-15%; Fe: surplus.
6. gas-shielded flux-cored wire according to claim 1, is characterized in that, the thickness of described stainless steel crust is 0.3-0.5mm.
7. according to the gas-shielded flux-cored wire described in any one in claim 1-6, it is characterized in that, the diameter of described gas-shielded flux-cored wire is 1.0-1.6mm.
8. gas-shielded flux-cored wire according to claim 1, is characterized in that, described gas-shielded flux-cored wire is at CO 2protection gas under weld.
CN201410016873.1A 2014-01-15 2014-01-15 A kind of stainless steel welded gas-shielded flux-cored wire Active CN103737198B (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103949796A (en) * 2014-05-05 2014-07-30 常州新德焊材科技有限公司 Austenitic stainless steel flux-cored wire having no oxidation tint on surface of welding joint
CN104772582A (en) * 2015-04-10 2015-07-15 河北京锐焊接材料有限公司 High-strength low-hydrogen self-shielded flux-core wire applicable to petroleum pipeline
CN105269176A (en) * 2015-11-20 2016-01-27 四川大西洋焊接材料股份有限公司 Gas-shielded flux-cored wire for oil tank corrosion resistant steel and preparation method for gas-shielded flux-cored wire
CN106514040A (en) * 2016-11-04 2017-03-22 四川大西洋焊接材料股份有限公司 Gas-shielded stainless steel flux-cored wire for boiler burner, and production process thereof
CN107030413A (en) * 2017-04-12 2017-08-11 广东省焊接技术研究所（广东省中乌研究院） A kind of flux-cored wire suitable for slab high-strength steel narrow-clearance submerged arc welding
CN107877033A (en) * 2016-09-30 2018-04-06 天津沃盾耐磨材料有限公司 A kind of flux-cored wire and preparation method thereof
KR20190017413A (en) * 2017-08-11 2019-02-20 현대종합금속 주식회사 Flux cored wire welding wire for cryogenic applications
CN112388202A (en) * 2020-12-01 2021-02-23 四川大西洋焊接材料股份有限公司 Welding wire flux core, welding wire, preparation method of welding wire and welding method
CN112404793A (en) * 2020-10-08 2021-02-26 武汉科技大学 Seamless flux-cored wire for welding low-nitrogen non-magnetic naval vessel steel
CN114055013A (en) * 2021-11-26 2022-02-18 四川大西洋焊接材料股份有限公司 Flux-cored wire, flux-cored wire and preparation method and application thereof
CN115194362A (en) * 2021-04-12 2022-10-18 天津市金桥焊材集团股份有限公司 Low-smoke 55-kilogram-level weather-resistant flux-cored wire
CN115255712A (en) * 2022-04-11 2022-11-01 江苏东南焊材有限公司 Stainless steel self-protection flux-cored wire
CN115255712B (en) * 2022-04-11 2024-04-26 江苏东南焊材有限公司 Stainless steel self-protection flux-cored wire

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5099103A (en) * 1989-12-08 1992-03-24 Kabushiki Kaisha Kobe Seiko Sho Flux-cored wire for gas shielded arc welding
JP2005186138A (en) * 2003-12-26 2005-07-14 Kobe Steel Ltd Metal based flux-containing wire for gas-shielded arc welding, and gas shielded arc welding method
CN101323057A (en) * 2007-06-13 2008-12-17 中国船舶重工集团公司第七二五研究所 High intensity metallic core type seamless flux-cored wire
CN102430877A (en) * 2011-11-04 2012-05-02 武汉铁锚焊接材料股份有限公司 Metal powder type flux-cored wire and preparation and application thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5099103A (en) * 1989-12-08 1992-03-24 Kabushiki Kaisha Kobe Seiko Sho Flux-cored wire for gas shielded arc welding
JP2005186138A (en) * 2003-12-26 2005-07-14 Kobe Steel Ltd Metal based flux-containing wire for gas-shielded arc welding, and gas shielded arc welding method
CN101323057A (en) * 2007-06-13 2008-12-17 中国船舶重工集团公司第七二五研究所 High intensity metallic core type seamless flux-cored wire
CN102430877A (en) * 2011-11-04 2012-05-02 武汉铁锚焊接材料股份有限公司 Metal powder type flux-cored wire and preparation and application thereof

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103949796B (en) * 2014-05-05 2016-08-31 常州新德焊材科技有限公司 A kind of face of weld non-oxidation color austenitic stainless steel flux-cored wire
CN103949796A (en) * 2014-05-05 2014-07-30 常州新德焊材科技有限公司 Austenitic stainless steel flux-cored wire having no oxidation tint on surface of welding joint
CN104772582A (en) * 2015-04-10 2015-07-15 河北京锐焊接材料有限公司 High-strength low-hydrogen self-shielded flux-core wire applicable to petroleum pipeline
CN104772582B (en) * 2015-04-10 2017-09-05 河北京锐焊接材料有限公司 A kind of high intensity low hydrogen self-protection flux-cored wire suitable for petroleum pipeline
CN105269176A (en) * 2015-11-20 2016-01-27 四川大西洋焊接材料股份有限公司 Gas-shielded flux-cored wire for oil tank corrosion resistant steel and preparation method for gas-shielded flux-cored wire
CN107877033A (en) * 2016-09-30 2018-04-06 天津沃盾耐磨材料有限公司 A kind of flux-cored wire and preparation method thereof
CN107877033B (en) * 2016-09-30 2020-03-31 天津沃盾耐磨材料有限公司 Flux-cored wire and preparation method thereof
CN106514040B (en) * 2016-11-04 2019-07-26 四川大西洋焊接材料股份有限公司 A kind of gas shielded stainless flux-cored wire and its production technology for boiler-burner
CN106514040A (en) * 2016-11-04 2017-03-22 四川大西洋焊接材料股份有限公司 Gas-shielded stainless steel flux-cored wire for boiler burner, and production process thereof
CN107030413A (en) * 2017-04-12 2017-08-11 广东省焊接技术研究所（广东省中乌研究院） A kind of flux-cored wire suitable for slab high-strength steel narrow-clearance submerged arc welding
KR20190017413A (en) * 2017-08-11 2019-02-20 현대종합금속 주식회사 Flux cored wire welding wire for cryogenic applications
KR101965666B1 (en) 2017-08-11 2019-04-04 현대종합금속 주식회사 Flux cored wire welding wire for cryogenic applications
CN112404793A (en) * 2020-10-08 2021-02-26 武汉科技大学 Seamless flux-cored wire for welding low-nitrogen non-magnetic naval vessel steel
CN112388202A (en) * 2020-12-01 2021-02-23 四川大西洋焊接材料股份有限公司 Welding wire flux core, welding wire, preparation method of welding wire and welding method
CN112388202B (en) * 2020-12-01 2022-06-24 四川大西洋焊接材料股份有限公司 Welding wire flux core, welding wire, preparation method of welding wire and welding method
CN115194362A (en) * 2021-04-12 2022-10-18 天津市金桥焊材集团股份有限公司 Low-smoke 55-kilogram-level weather-resistant flux-cored wire
CN114055013A (en) * 2021-11-26 2022-02-18 四川大西洋焊接材料股份有限公司 Flux-cored wire, flux-cored wire and preparation method and application thereof
CN115255712A (en) * 2022-04-11 2022-11-01 江苏东南焊材有限公司 Stainless steel self-protection flux-cored wire
CN115255712B (en) * 2022-04-11 2024-04-26 江苏东南焊材有限公司 Stainless steel self-protection flux-cored wire

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