CN103659052B - Carbon dioxide gas arc welding is with containing Ti and Type B metal flux-cored wire - Google Patents

Carbon dioxide gas arc welding is with containing Ti and Type B metal flux-cored wire Download PDF

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Publication number
CN103659052B
CN103659052B CN201210343049.8A CN201210343049A CN103659052B CN 103659052 B CN103659052 B CN 103659052B CN 201210343049 A CN201210343049 A CN 201210343049A CN 103659052 B CN103659052 B CN 103659052B
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metal
medicine core
core powder
welding
cored wire
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CN103659052A (en
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蔡鸿祥
庄石城
叶桂林
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KUNSHAN GINTUNE WELDING CO Ltd
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KUNSHAN GINTUNE WELDING CO Ltd
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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
    • B23K35/3053—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
    • B23K35/368—Selection of non-metallic compositions of core materials either alone or conjoint with selection of soldering or welding materials

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nonmetallic Welding Materials (AREA)

Abstract

The invention discloses a kind of carbon dioxide gas arc welding with containing Ti and Type B metal flux-cored wire, be applicable to the high speed flat fillet weld of slab bottoming welding and high thickness priming paint steel plate.Its metal medicine core powder weight accounts for welding wire gross weight 10 ~ 30%; Is steel-tape sheath by C in the total weight percent of steel-tape sheath 0.001 ~ 0.025%; Si 0.001 ~ 0.030 %; Mn 0.01 ~ 0.35%; Al 0.001 ~ 0.030 %; P 0.001 ~ 0.020%; S 0.001 ~ 0.020% and surplus Fe composition; In the total weight percent of metal medicine core powder, metal medicine core powder is by fluoride 0.1 ~ 5.0%; C 0.01 ~ 0.5%; Mn 8 ~ 20%; Si 2 ~ 8%; Ti 0.1 ~ 5.0%; B 0.01 ~ 0.1%; Zr 0.01 ~ 2.0% and surplus Fe composition.This metal flux-cored wire splashing amount when slab bottoming is welded is little and can reach the crack resistance suitable with solid welding wire, can obtain excellent resistance to gas porosity when scribbling high speed flat fillet weld on 30-40 μm high thickness priming paint steel plate, and the good mechanical performance of deposited metal.<!--1-->

Description

Carbon dioxide gas arc welding is with containing Ti and Type B metal flux-cored wire
Technical field
The present invention relates to a kind of welding wire for gas shielded welding, particularly relate to a kind of carbon dioxide gas arc welding with containing Ti and Type B metal flux-cored wire, be applicable to slab bottoming welding and the flat fillet weld of high thickness priming paint steel plate high speed, belong to welding material of metal field.
Background technology
In the slab bottoming welding procedure of steel construction, solid welding wire welding is mainly used to improve the crack resistance of road, end weld seam the earliest.But when adopting solid welding wire in carbon dioxide gas arc welding, under higher welding condition, usually easily cause many shortcomings of splashing, thus cause puzzlement to subsequent treatment, and the stress of sheet material may be caused to concentrate because splash, Pitting Susceptibility is raised.And in Ship Welding field, current most of shipyard adopts the welding agent type flux-cored wire of resistance to priming paint to carry out car-type automatic welding, this wlding welds under the low thickness condition being less than 25 μm can obtain comparatively ideal resistance to gas porosity, but under the high thickness condition being greater than 30 μm, its resistance to paint is not satisfactory.
Summary of the invention
In order to overcome above-mentioned technological deficiency; the invention provides a kind of carbon dioxide gas arc welding with containing Ti and Type B metal flux-cored wire; this metal flux-cored wire is when slab bottoming is welded; when the crack resistance suitable with solid core welding wire can be ensured; improve the shortcoming that solid welding wire splashing is many; and very excellent resistance to gas porosity can be obtained when carrying out high speed flat fillet weld on the steel plate scribbling 30 ~ 40 μm high thickness priming paint, excellent deposited metal mechanical performance can be obtained simultaneously.
The present invention in order to solve the problems of the technologies described above adopted technical scheme is:
A kind of carbon dioxide gas arc welding is with containing Ti and Type B metal flux-cored wire, and by steel-tape sheath and metal medicine core powder constituent, described metal medicine core powder wrapped is in described steel-tape sheath, and described metal medicine core powder weight accounts for 10 ~ 30% of welding wire gross weight;
In the total weight percent of steel-tape sheath, the component of described steel-tape sheath and percentage by weight are: C0.001 ~ 0.025%; Si0.001 ~ 0.030%; Mn0.01 ~ 0.35%; Al0.001 ~ 0.030%; P0.001 ~ 0.020%; S0.001 ~ 0.020% and surplus Fe;
In the total weight percent of metal medicine core powder, component and the percentage by weight of described metal medicine core powder are: fluoride 0.1 ~ 5.0%; C0.01 ~ 0.5%; Mn8 ~ 20%; Si2 ~ 8%; Ti0.1 ~ 5.0%; B0.01 ~ 0.1%; Zr0.01 ~ 2.0% and surplus Fe; Wherein said fluoride is K 2siF 6, NaF, K 3alF 6and Na 3alF 6in the mixture of the arbitrary proportion of any one or several.
Further technical scheme is:
In the total weight percent of metal medicine core powder, component and the percentage by weight of described metal medicine core powder are: fluoride 0.1 ~ 2.0%, C0.05 ~ 0.15%, Mn12 ~ 20%, Si4 ~ 8%, Ti0.1 ~ 3.0%, B0.01 ~ 0.1%, Zr0.01 ~ 0.50% and surplus Fe;
Wherein said fluoride is K 2siF 6, NaF, K 3alF 6and Na 3alF 6the mixture of arbitrary proportion.
In metal medicine core powder of the present invention, the Main Function of each component is as described below:
Fluoride (comprises Na 3alF 6, K 3alF 6, K 2siF 6, NaF) Main Function be stabilising arc and dehydrogenation.When fluoride is very few, electric arc is unstable, and dehydrogenation is little; When fluoride is too much, weld fumes amount obviously increases, and electric arc is also unstable, splashes more.
The Main Function of C is to provide suitable mechanical property.When carbon content is too low, intensity is not enough; When carbon content is too high, intensity is too high, and impact value is not good.
The Main Function of Mn is deoxidation, desulfurization and to transition alloy elements in weld seam.When Fe content is too low, then easily produce pore, intensity is not enough, and when Fe content is too high, intensity is too high, and impact value is not good, and welding bead narrows.
The primary effect of Si is by silicomanganese combined deoxidation, and such deoxidation effect is better, simultaneously transition alloy elements.When silicone content is too low, then easily produce pore, intensity is not enough, and welding bead is narrow; When silicone content is too high, intensity is too high, and impact value is not good, and molten bath is too rare, shaping bad.
The Main Function of Ti is transition alloy elements in weld seam.When Ti content is too low, little to the effect improving impact value; When Ti content is too high, then intensity is too high, even can produce martensitic structure, and make impact value low.
The Main Function of B is transition alloy elements in weld seam.When boron element is too low, little to the effect improving impact value; When Boron contents is too low, then unfavorable to hot-cracking resistance.
The Main Function of Zr is deoxidation, denitrogenation, and has certain dehydrogenation, the function of desulfurization, can improve impact flexibility by crystal grain thinning in addition.
Advantageous Effects of the present invention is: adopt silicomanganese combined deoxidation in flux-cored wire of the present invention, can reduce by the carbon monoxide of high thickness priming paint burning release, in addition metal medicine core powder makes face of weld substantially without slag, the effusion of gas when being conducive to welding, above-mentioned element all can improve resistance to gas porosity; In metal medicine core powder, appropriate fluoride can play the effect of dehydrogenation, thus improves crack resistance, is applicable to slab bottoming welding; Splash during welding few, improve welding procedure, make because the shortcoming of adhering to the pitting corrosion resistance deterioration caused of splashing improves; Titanium elements can make tissue have more a high proportion of acicular ferrite, and boron element, as the forming core point of acicular ferrite, more easily produces acicular ferrite, through titanium, boron composite refining crystal grain thus, more can improve impact value.Flux-cored wire of the present invention not only improves the many shortcomings of solid welding wire splashing and reaches the crack resistance suitable with solid welding wire when slab bottoming is welded, and very excellent resistance to gas porosity can be obtained when carrying out high speed flat fillet weld on the steel plate scribbling 30-40 μm high thickness priming paint, excellent deposited metal mechanical performance can be obtained simultaneously.
Detailed description of the invention
Carbon dioxide gas arc welding of the present invention is with containing Ti and Type B metal flux-cored wire, by steel-tape sheath and metal medicine core powder constituent, described metal medicine core powder wrapped is in described steel-tape sheath, and described metal medicine core powder weight accounts for 10 ~ 30% of welding wire gross weight;
In the total weight percent of steel-tape sheath, the component of described steel-tape sheath and percentage by weight are: C0.001 ~ 0.025%; Si0.001 ~ 0.030%; Mn0.01 ~ 0.35%; Al0.001 ~ 0.030%; P0.001 ~ 0.020%; S0.001 ~ 0.020% and surplus Fe;
In the total weight percent of metal medicine core powder, component and the percentage by weight of described metal medicine core powder are: fluoride 0.1 ~ 5.0%; C0.01 ~ 0.5%; Mn8 ~ 20%; Si2 ~ 8%; Ti0.1 ~ 5.0%; B0.01 ~ 0.1%; Zr0.01 ~ 2.0% and surplus Fe; Wherein said fluoride is K 2siF 6, NaF, K 3alF 6and Na 3alF 6in the mixture of the arbitrary proportion of any one or several.
The component that wherein metal medicine core powder is more excellent and percentage by weight are: in the total weight percent of metal medicine core powder, component and the percentage by weight of described metal medicine core powder are: fluoride 0.1 ~ 2.0%, C0.05 ~ 0.15%, Mn12 ~ 20%, Si4 ~ 8%, Ti0.1 ~ 3.0%, B0.01 ~ 0.1%, Zr0.01 ~ 0.50% and surplus Fe;
Wherein said fluoride is K 2siF 6, NaF, K 3alF 6and Na 3alF 6the mixture of arbitrary proportion.
For a better understanding of the present invention, further illustrate below by embodiment 1 ~ 8, but the present invention is not limited to following embodiment.
Adopt manufacturing process general in welding wire production industry, make steel-tape sheath according to the steel band component described in table 1, carry out the configuration of metal medicine core powder according to the metal medicine core component described in table 2, and by metal medicine core powder wrapped in steel-tape sheath.
Table 1 steel-tape sheath component and percentage by weight (%)
Table 2 metal medicine core powdery components and percentage by weight (%)
The chemical composition (%) of table 3 deposited metal
The mechanical performance of table 4 deposited metal
Note: ballistic work is measurement result at-20 DEG C
Table 5 flux-cored wire of the present invention compares with solid welding wire splashing amount
Described in embodiment 1 ~ 8, the wire diameter of flux-cored wire and solid core welding wire is 1.2mm, and welding operation condition is all consistent: electric current is 320A, and voltage is 37V, and speed of welding is 600mm/min, and weld interval is 30s.
Table 6 flux-cored wire one pole of the present invention fillet welding workability and weld size
Above-mentioned experiment is visible; carbon dioxide gas arc welding of the present invention is with not only improving the many shortcomings of solid welding wire splashing containing Ti and Type B metal flux-cored wire when slab bottoming is welded and reaching the crack resistance suitable with solid welding wire; and very excellent resistance to gas porosity can be obtained when carrying out high speed flat fillet weld on the steel plate scribbling 30-40 μm high thickness priming paint, deposited metal can obtain excellent mechanical performance simultaneously.

Claims (2)

1. carbon dioxide gas arc welding is with containing Ti and a Type B metal flux-cored wire, and by steel-tape sheath and metal medicine core powder constituent, described metal medicine core powder wrapped, in described steel-tape sheath, is characterized in that:
Described metal medicine core powder weight accounts for 10 ~ 30% of welding wire gross weight;
In the total weight percent of steel-tape sheath, the component of described steel-tape sheath and percentage by weight are: C0.001 ~ 0.025%; Si0.001 ~ 0.030%; Mn0.01 ~ 0.35%; Al0.001 ~ 0.030%; P0.001 ~ 0.020%; S0.001 ~ 0.020% and surplus Fe;
In the total weight percent of metal medicine core powder, component and the percentage by weight of described metal medicine core powder are: fluoride 0.1 ~ 5.0%; C0.01 ~ 0.5%; Mn8 ~ 20%; Si2 ~ 8%; Ti0.1 ~ 5.0%; B0.01 ~ 0.1%; Zr0.01 ~ 2.0% and surplus Fe; Wherein said fluoride is K 2siF 6, NaF, K 3alF 6and Na 3alF 6in the mixture of the arbitrary proportion of any one or several.
2. carbon dioxide gas arc welding according to claim 1 is with containing Ti and Type B metal flux-cored wire, it is characterized in that: in the total weight percent of metal medicine core powder, component and the percentage by weight of described metal medicine core powder are: fluoride 0.1 ~ 2.0%, C0.05 ~ 0.15%, Mn12 ~ 20%, Si4 ~ 8%, Ti0.1 ~ 3.0%, B0.01 ~ 0.1%, Zr0.01 ~ 0.50% and surplus Fe;
Wherein said fluoride is K 2siF 6, NaF, K 3alF 6and Na 3alF 6the mixture of arbitrary proportion.
CN201210343049.8A 2012-09-17 2012-09-17 Carbon dioxide gas arc welding is with containing Ti and Type B metal flux-cored wire Active CN103659052B (en)

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CN109719428A (en) * 2019-03-12 2019-05-07 江苏南通瑞舶莱焊业科技有限公司 The resistance to stomata steel of resistance to preliminary larquering flux-cored wire

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6340396B1 (en) * 1998-12-09 2002-01-22 Kabushiki Kaisha Kobe Seiko Sho Flux cored wire for welding duplex stainless steel
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
CN102528317A (en) * 2010-12-20 2012-07-04 昆山京群焊材科技有限公司 Flux-cored wire for electrogas welding

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100355581B1 (en) * 2000-09-23 2002-10-11 고려용접봉 주식회사 Flux cored wire for gas shield arc welding

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6340396B1 (en) * 1998-12-09 2002-01-22 Kabushiki Kaisha Kobe Seiko Sho Flux cored wire for welding duplex stainless steel
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
CN102528317A (en) * 2010-12-20 2012-07-04 昆山京群焊材科技有限公司 Flux-cored wire for electrogas welding

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