CN105057925A - Metal powder core-type seamless flux-cored wire for angle welding - Google Patents

Metal powder core-type seamless flux-cored wire for angle welding Download PDF

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Publication number
CN105057925A
CN105057925A CN201510457357.7A CN201510457357A CN105057925A CN 105057925 A CN105057925 A CN 105057925A CN 201510457357 A CN201510457357 A CN 201510457357A CN 105057925 A CN105057925 A CN 105057925A
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China
Prior art keywords
cored wire
metal powder
welding
flux
powder core
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Granted
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CN201510457357.7A
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Chinese (zh)
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CN105057925B (en
Inventor
张晓�
朱官朋
冯兆龙
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No 725 Research Institute of China Shipbuilding Industry Corp
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LUOYANG SHUANGRUI SPECIAL ALLOY MATERIAL Co Ltd
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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
    • B23K35/02—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
    • B23K35/0266—Rods, electrodes, wires flux-cored
    • 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
    • B23K35/22—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
    • B23K35/3601—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 with inorganic compounds as principal constituents
    • B23K35/3608—Titania or titanates
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/16—Arc welding or cutting making use of shielding gas

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Nonmetallic Welding Materials (AREA)

Abstract

The invention discloses a metal powder core-type seamless flux-cored wire for angle welding. Flaws are prevented by reducing the content of diffusible hydrogen in weld metal and reducing the content of slag formers in the formula of the flux-cored wire. The metal powder core-type seamless flux-cored wire has good anti-porosity property when used for transverse angle welding of a primer steel plate and has good low temperature impact toughness while the -20 DEG C impact energy average value can be up to 47 J. The metal powder core-type seamless flux-cored wire has good welding manufacturability, is stable in electric arc during welding, can form spray transfer easily, is easy to operate, is good in weld appearance and generates a little slag. The surface of the flux-cored wire can be plated with copper, so that the electric conductivity is improved. Wire feeding is stable, automatic welding is facilitated, and the diffusible hydrogen of deposited metal is smaller than 4 ml/100g.

Description

A kind of fillet welding metal powder core pattern seamless flux-cored wire
[technical field]
The present invention relates to field of welding material, particularly relate to a kind of fillet welding metal powder core pattern seamless flux-cored wire, be specifically related to one and be adapted to adopt 100%CO 2the low-alloy steel fillet welding fillet welding metal powder core pattern seamless flux-cored wire of gas shielded welding inorganic zinc primer and phosphoric acid priming paint.
[background technology]
Known, along with flux-cored wire is in the extensive use of the industry such as boats and ships, bridge, in the fillet-welded joint of welded unit, adopt flux-cored wire to carry out the intensifying trend of semiautomatic welding, desk-top automatic welding and electroplating equipment wielding machine automation.But, being generally and preventing steel plate from getting rusty, need to coat priming paint in advance at steel plate, wherein, is inorganic zinc primer and phosphoric acid priming paint mostly.When using general flux-cored wire to carry out the horizontal fillet welding of priming paint steel plate, all there is weld defect as generations such as pit, channeling and pores.
Metal powder type flux-cored wire cross section has more high current density, therefore brings higher welding efficiency, and has multi-pass welding without scarfing cinder, the advantage of greatly increasing work efficiency.Metal powder type flux-cored wire has better wetability and permeability, especially in V-type weld seam and angle welding, can reduce incomplete fusion defect tendency, face of weld smooth and beautiful appearance.
Chinese patent, publication number are CN101323057A, publication date is on December 17th, 2008, patent name is a kind of high intensity metallic core type seamless flux-cored wire, it discloses a kind of yield strength more than 785MPa low-alloy steel welding seamless flux-cored wire, the weld metal intensity that embodiment provides more than 785Mpa, but does not reach the requirement of 890MPa.
Find through retrieval, also relevant for adopting 100%CO at present 2gas shield, is applicable to the public technology of the metal powder core pattern seamless flux-cored wire being with the horizontal fillet welding of priming paint steel plate.
[summary of the invention]
In order to overcome the deficiency existed in background technology, the invention provides a kind of fillet welding metal powder core pattern seamless flux-cored wire, the present invention prevents the generation of defect from reducing weld metal diffusible hydrogen content and reducing slag former content two aspects solder wire formula, the present invention has excellent anti-pore ability, and property indices is excellent.
For realizing goal of the invention as above, the present invention adopts technical scheme as described below:
A kind of fillet welding metal powder core pattern seamless flux-cored wire, comprise crust and medicine core powder, described crust is mild-carbon steel strip, and intracutaneous is provided with medicine core powder outside, and in described medicine core powder, each component comprises following composition by weight:
0.08 ~ 0.48 part, carbon;
Silicon 0.8 ~ 2.8 part;
4 ~ 12 parts, manganese;
Iron 24 ~ 70 parts;
TiO 212 ~ 36 parts;
SiO 24 ~ 12 parts;
Arc stabilizer 0 ~ 2 part.
Described fillet welding metal powder core pattern seamless flux-cored wire, described carbon add the combination that form is any one or two kinds in graphite or ferroalloy.
Described fillet welding metal powder core pattern seamless flux-cored wire, the form that adds of described silicon is any one or two kinds of combinations in ferrosilicon or silicomangan.
Described fillet welding metal powder core pattern seamless flux-cored wire, the form that adds of described manganese is any one or two or more combination in ferromanganese or manganese metal or silicomangan.
Described fillet welding metal powder core pattern seamless flux-cored wire, described TiO 2interpolation form be any one or two or more combination in rutile or titanium dioxide or potassium titanate.
Described fillet welding metal powder core pattern seamless flux-cored wire, described arc stabilizer comprises Na 2o or K 2o or NaF or K 2siF 6or K 2zrF 6or K 3alF 6in any one or two or more combination.
Described fillet welding metal powder core pattern seamless flux-cored wire, the filling weight of described medicine core powder accounts for 10 ~ 25% of welding wire gross weight.
Adopt technical scheme as above, there is following beneficial effect:
A kind of fillet welding metal powder core pattern seamless flux-cored wire of the present invention, the present invention prevents the generation of defect from reducing weld metal diffusible hydrogen content and reducing slag former content two aspects solder wire formula, the present invention, when the horizontal fillet welding of priming paint steel plate, has excellent anti-pore ability; Have good low-temperature impact toughness ,-20 DEG C of ballistic work mean values reach more than 47J; Have good welding usability, arc stability during welding, be easy to form spray transfer, processing ease, appearance of weld is good, and slag is few; Flux-cored wire surface can copper facing, improves conductive capability, and wire feed is stablized, and is beneficial to automatic welding; Deposited metal diffusible hydrogen is less than 4ml/100g etc.
[detailed description of the invention]
Can explain the present invention in more detail by the following examples, the present invention is not limited to the following examples;
A kind of fillet welding metal powder core pattern seamless flux-cored wire of the present invention, comprise crust and medicine core powder, described crust is mild-carbon steel strip, intracutaneous is provided with medicine core powder outside, the filling weight of described medicine core powder accounts for 10 ~ 25% of welding wire gross weight, and in medicine core powder, each component comprises following composition by weight:
0.08 ~ 0.48 part, carbon; Silicon 0.8 ~ 2.8 part;
4 ~ 12 parts, manganese; Iron 24 ~ 70 parts;
TiO 212 ~ 36 parts; SiO 24 ~ 12 parts;
Arc stabilizer 0 ~ 2 part.
Wherein said carbon add the combination that form is any one or two kinds in graphite or ferroalloy; The form that adds of described silicon is any one or two kinds of combinations in ferrosilicon or silicomangan; The form that adds of described manganese is any one or two or more combination in ferromanganese or manganese metal or silicomangan; Described TiO 2interpolation form be any one or two or more combination in rutile or titanium dioxide or potassium titanate; Described arc stabilizer comprises Na 2o or K 2o or NaF or K 2siF 6or K 2zrF 6or K 3alF 6in any one or two or more combination.
In the present invention, carbon is the important element that solution strengthening ensures deposited metal intensity, and certain carbon content can lower the splashing of welding wire short circuiting transfer simultaneously, and the form that adds of carbon can be graphite, various ferroalloy, flux-cored wire steel band.Carbon content is less than 0.08 part can not proof strength, and carbon content is greater than 0.48 part of one side can cause that intensity is too high, low-temperature flexibility declines, and can worsen welding usability on the other hand.
Silicon is important deoxidant element, is also intensified element simultaneously, and a certain amount of silicon has important function for raising intensity and toughness, but excessive silicon can worsen weld metal low-temperature flexibility.Therefore silicone content controls between 0.8 ~ 2.8 part.The form that adds of silicon can be ferrosilicon, silicomangan.
Manganese is important deoxidant element, also be intensified element simultaneously, a certain amount of manganese can play reduction austenite transformation temperature, crystal grain thinning, this has important function for raising intensity and toughness, but excessive manganese can cause intensity too high, impaired low temperature toughness, and therefore Fe content controls between 4 ~ 12 parts.The form that adds of manganese can be ferromanganese, manganese metal, silicomangan.
Arc stabilizer comprises Na 2o, K 2o, NaF, K 2siF 6, K 2zrF 6, K 3alF 6, K 4o 4ti, it has stabilising arc effect, improves welding usability, improves and forms the welding procedure scope of spray transfer, therefore amount of filling otherwise higher than 2 parts, if dose excessive, then can cause de-slag difficulty.Wherein the content of fluoride more than 0.40 part, otherwise can not can produce a large amount of splashing.
TiO 2: the effect with stabilising arc and slag making, improves fusing point and the viscosity of slag, ensures appearance of weld, therefore amount of filling otherwise lower than 12 parts, otherwise can not reach corresponding effect, if dose more than 36 parts, then can cause de-slag difficulty.Interpolation form can be rutile, titanium dioxide, potassium titanate.
SiO 2: the effect with stabilising arc and slag making, improves fusing point and the viscosity of slag, ensures appearance of weld, therefore amount of filling otherwise lower than 4 parts, otherwise corresponding effect can not reached, if dose more than 12 parts, then can reduce slag viscosity, make slag can not cover molten bath completely, appearance of weld is deteriorated.
Iron has the effect regulating filling rate and improve welding arc stablility, but excessive iron can produce a large amount of splashing.Therefore iron content controls between 24 ~ 70 parts.
When using general flux-cored wire to carry out the horizontal fillet welding of priming paint steel plate, all have weld defect as generations such as pit, channeling and pores, the reason producing defect, mainly because the priming paint on steel plate is under the heat effect of electric arc, resolves into H 2, CO and metallic vapour, in them, a part is overflowed between riser and base plate, and remainder will enter welding pool, if molten bath cooling velocity is too fast, gas can not be overflowed completely, then can form pore and worm channel at face of weld.Therefore the present invention prevents the generation of defect from following two aspects.One, reduce weld metal diffusible hydrogen content.Two, reduce slag former content in solder wire formula.
The present invention has following features:
1, when the horizontal fillet welding of priming paint steel plate, there is excellent anti-pore ability.
2, have good low-temperature impact toughness ,-20 DEG C of ballistic work mean values reach more than 47J.
3, have good welding usability, arc stability during welding, be easy to form spray transfer, processing ease, appearance of weld is good, and slag is few.
4, flux-cored wire surface can copper facing, improves conductive capability, and wire feed is stablized, and is beneficial to automatic welding.
5, deposited metal diffusible hydrogen is low is less than 4ml/100g.
Specific embodiments of the invention are as follows:
Embodiment 1,2,3 is the metal powder core pattern seamless flux-cored wire being adapted to be with the horizontal fillet welding of priming paint steel plate high speed, and be fill medicinal powder in steel coating, charge grain weight amount accounts for 10 ~ 25% of welding wire gross weight.
Raw material title Iron Graphite SiO 2 Ferrosilicon Manganese metal Na 2O K 2O K 3AlF 6 Rutile Potassium titanate K 2ZrF 6
Embodiment 1 40.55 0.25 11 2.7 10 0.04 0.05 0.1 35 0.3 0.01
Embodiment 2 56.75 0.35 8 1.4 8 0.01 0.01 0. 04 25 0.4 0.04
Embodiment 3 64.35 0.45 6 1.7 9 0.02 0.03 0. 2 18 0.2 0.05
Implementation result example:
Deposited metal mechanical property test is carried out to above-mentioned three kinds of obtained welding wires; test plate (panel) groove, size, sampling method and position are all carried out according to CNS GB/T17493-1998 " low-alloy steel flux-cored wire "; protective gas and the welding conditions of employing are as described below: protective gas adopts 100%CO2; access DC reverse connection formula power supply carries out welding operation; embodiment 1,2,3 welding current 240A ~ 280A, weldingvoltage 26 ~ 30V.Speed of welding 30cm/min, temperature between the preheating of 150 DEG C and road, measure the deposited metal diffusible hydrogen content of welding according to CNS GB/T3965-1995 " Diffusible Hydrogen In Deposited Metal assay method ", the performance of each deposited metal is as follows:
deposited metal mechanical property
deposited metal diffusible hydrogenml/100g
Embodiment 1 1.88
Embodiment 2 2.08
Embodiment 3 3.16
As can be seen here, for above-mentioned three kinds of formulas, different welding conditions are adopted according to national standard, each embodiment welding wire all can meet the needs of welding, and deposited metal diffusible hydrogen content is all less than 4ml/100g deposited metal simultaneously, and every measurement result is all better than the regulation of national technical standard, in sum, metal powder core pattern seamless flux-cored wire of the present invention is when the horizontal fillet welding of priming paint steel plate, and have excellent anti-pore ability, property indices is excellent.
Part not in the detailed description of the invention is prior art.
In order to open object of the present invention and the embodiment selected in this article, currently think to be suitable for.But it is to be understood that the present invention is intended to comprise all changes belonging to the embodiment in this design and invention scope and improvement.

Claims (7)

1. a fillet welding metal powder core pattern seamless flux-cored wire, comprise crust and medicine core powder, it is characterized in that: described crust is mild-carbon steel strip, intracutaneous is provided with medicine core powder outside, and in described medicine core powder, each component comprises following composition by weight:
0.08 ~ 0.48 part, carbon;
Silicon 0.8 ~ 2.8 part;
4 ~ 12 parts, manganese;
Iron 24 ~ 70 parts;
TiO 212 ~ 36 parts;
SiO 24 ~ 12 parts;
Arc stabilizer 0 ~ 2 part.
2. fillet welding metal powder core pattern seamless flux-cored wire according to claim 1, is characterized in that: described carbon add the combination that form is any one or two kinds in graphite or ferroalloy.
3. fillet welding metal powder core pattern seamless flux-cored wire according to claim 1, is characterized in that: the form that adds of described silicon is any one or two kinds of combinations in ferrosilicon or silicomangan.
4. fillet welding metal powder core pattern seamless flux-cored wire according to claim 1, is characterized in that: the form that adds of described manganese is any one or two or more combination in ferromanganese or manganese metal or silicomangan.
5. fillet welding metal powder core pattern seamless flux-cored wire according to claim 1, is characterized in that: described TiO 2interpolation form be any one or two or more combination in rutile or titanium dioxide or potassium titanate.
6. fillet welding metal powder core pattern seamless flux-cored wire according to claim 1, is characterized in that: described arc stabilizer comprises Na 2o or K 2o or NaF or K 2siF 6or K 2zrF 6or K 3alF 6in any one or two or more combination.
7. fillet welding metal powder core pattern seamless flux-cored wire according to claim 1, is characterized in that: the filling weight of described medicine core powder accounts for 10 ~ 25% of welding wire gross weight.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106181128A (en) * 2016-08-18 2016-12-07 洛阳双瑞特种合金材料有限公司 A kind of seamless without copper plated flux-cored wires
CN106736048A (en) * 2016-11-29 2017-05-31 洛阳双瑞特种合金材料有限公司 A kind of high-strength weathering steel metal powder core pattern seamless flux-cored wire
CN115971721A (en) * 2022-12-21 2023-04-18 武汉铁锚焊接材料股份有限公司 Flux-cored wire with high crack arrest performance and application thereof

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CN1271634A (en) * 1999-04-23 2000-11-01 日铁溶接工业株式会社 Flux cord welding rod used in gas shielded arc welding
CN1775452A (en) * 2005-11-24 2006-05-24 武汉铁锚焊接材料股份有限公司 Carbon steel cored solder wire for gas-shielded arc welding
CN101104232A (en) * 2007-08-09 2008-01-16 武汉铁锚焊接材料股份有限公司 Low alloy steel flux-cored welding wire for carbon dioxide gas protection welding
CN101125399A (en) * 2007-08-27 2008-02-20 常州华通焊丝有限公司 Carbon steel flux-cored wire used for gas shield welding
CN101450427A (en) * 2008-12-31 2009-06-10 宁波隆兴焊割科技股份有限公司 Metal powder type flux-cored wire for primer steel-plate corner welding
JP2010284682A (en) * 2009-06-11 2010-12-24 Nippon Steel & Sumikin Welding Co Ltd Flux cored wire for gas shielded arc welding
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
CN103878501A (en) * 2013-11-29 2014-06-25 中国船舶重工集团公司第七二五研究所 Metal-cored seamless flux-cored wire for high-strength steel

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Publication number Priority date Publication date Assignee Title
CN1271634A (en) * 1999-04-23 2000-11-01 日铁溶接工业株式会社 Flux cord welding rod used in gas shielded arc welding
CN1775452A (en) * 2005-11-24 2006-05-24 武汉铁锚焊接材料股份有限公司 Carbon steel cored solder wire for gas-shielded arc welding
CN101104232A (en) * 2007-08-09 2008-01-16 武汉铁锚焊接材料股份有限公司 Low alloy steel flux-cored welding wire for carbon dioxide gas protection welding
CN101125399A (en) * 2007-08-27 2008-02-20 常州华通焊丝有限公司 Carbon steel flux-cored wire used for gas shield welding
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CN103878501A (en) * 2013-11-29 2014-06-25 中国船舶重工集团公司第七二五研究所 Metal-cored seamless flux-cored wire for high-strength steel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106181128A (en) * 2016-08-18 2016-12-07 洛阳双瑞特种合金材料有限公司 A kind of seamless without copper plated flux-cored wires
CN106736048A (en) * 2016-11-29 2017-05-31 洛阳双瑞特种合金材料有限公司 A kind of high-strength weathering steel metal powder core pattern seamless flux-cored wire
CN106736048B (en) * 2016-11-29 2019-04-19 洛阳双瑞特种合金材料有限公司 A kind of high-strength weathering steel metal powder core pattern seamless flux-cored wire
CN115971721A (en) * 2022-12-21 2023-04-18 武汉铁锚焊接材料股份有限公司 Flux-cored wire with high crack arrest performance and application thereof

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