CN106891104A - A kind of ultralow-hydrogen low high-toughness metal powder core type seamless flux-cored wire of all-position welding - Google Patents

A kind of ultralow-hydrogen low high-toughness metal powder core type seamless flux-cored wire of all-position welding Download PDF

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Publication number
CN106891104A
CN106891104A CN201710136732.7A CN201710136732A CN106891104A CN 106891104 A CN106891104 A CN 106891104A CN 201710136732 A CN201710136732 A CN 201710136732A CN 106891104 A CN106891104 A CN 106891104A
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China
Prior art keywords
welding
powder
low
cored wire
metal powder
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CN201710136732.7A
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Chinese (zh)
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CN106891104B (en
Inventor
郭纯
李猛
张学杰
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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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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0255Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
    • B23K35/0261Rods, electrodes, wires
    • B23K35/0266Rods, electrodes, wires flux-cored
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/36Selection 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
    • B23K35/368Selection of non-metallic compositions of core materials either alone or conjoint with selection of soldering or welding materials

Abstract

A kind of ultralow-hydrogen low high-toughness metal powder core type seamless flux-cored wire of all-position welding, crust and medicine core powder, medicine core powder are filled in inside crust, and the crust is mild-carbon steel strip, it is characterised in that:The percentage by weight of each component is in medicine core powder:Low-carbon ferromanganese 10 15%, atomization ferrosilicon 15% 20%, rutile 2% 5%, ice crystal 1% 5%, atomization nickel powder 1% 3%, quartz 1% 2%, feldspar 0.5 2%, balance of iron powder.The present invention is adapted to carbon steel, the low-alloy steel all-position welding connect using the CO2 mixed gas arc weldings of 75 85% Ar+15 25%.Welding usability is good, stable mechanical property, and crack resistance is good, and diffusible hydrogen is low, and anti-moisture absorption is strong, can all-position welding.

Description

A kind of ultralow-hydrogen low high-toughness metal powder core type seamless flux-cored wire of all-position welding
Technical field
The present invention relates to field of welding material, more particularly, to a kind of ultralow-hydrogen low high-toughness metal powder core of all-position welding Type seamless flux-cored wire.
Background technology
Metal powder type flux-cored wire is the new trend of Overseas Development in recent years, and Japan and the U.S. are few slag type metal at present Powder type medicine welding wire is used as one of emphasis researched and developed.Metal powder type flux-cored wire is for slag type flux-cored wire , its medicine core major part is metal powder(Iron powder, deoxidier), only a small amount of arc stabilizer and slag former.Why it is evaluated It is " instead of the wlding of solid core welding wire " because the strong point of its few solid core welding wire of the existing quantity of slag, high deposition rate, excellent to be had both again The strong point of elegant appearance of weld, low spatter type flux-cored wire, and hydrogen content can easily be limited in very low level, make to resist Fragility can be improved.Compared with solid core welding wire or common flux-cored wire, productivity ratio is improved metal powder type flux-cored wire, weld seam Quality is good, and the expense for filling metal is low, reduces cleaning up cost.
Number of patent application, the A of 201510457357.7 CN of publication number 105057925 disclose a kind of fillet welding metal powder Core pattern seamless flux-cored wire, it is adaptable to which fillet welding welding still cannot all-position welding.Number of patent application 201310628417.8, public affairs The number of opening CN 103878501A disclose a kind of high-strength steel metal powder core pattern seamless flux-cored wire, super for welding buckling strength The high-strength steel of 690MPa is crossed, and is not suitable for all-position welding.
Found by retrieval, at home and abroad there is no the mixed gas protected for using of correlation, it is adaptable to all-position welding The publication of metal powder core pattern seamless flux-cored wire.
The content of the invention
The purpose of the present invention is to solve the problems, such as that it is mixed gas protected that existing welding wire cannot be used, there is provided a kind of full position Put the ultralow-hydrogen low high-toughness metal powder core type seamless flux-cored wire of welding.
The present invention is the deficiency of solution above-mentioned technical problem, and the technical scheme for being used is:
A kind of ultralow-hydrogen low high-toughness metal powder core type seamless flux-cored wire of all-position welding, crust and medicine core powder, medicine core powder are filled out Fill in outer intracutaneous portion, the crust is mild-carbon steel strip, it is characterised in that:The percentage by weight of each component is in medicine core powder:Low-carbon (LC) Ferromanganese 10-15%, atomization ferrosilicon 15%-20%, rutile 2%-5%, ice crystal 1%-5%, atomization nickel powder 1%-3%, quartz 1%-2%, Feldspar 0.5-2%, balance of iron powder.
Heretofore described metal powder core pattern seamless flux-cored wire uses metal powder-cored wire slag system.Rutile melts Slag setting temperature is high, can improve all-position welding, and addition is advisable with 2-5%, and the too low all-position welding of addition is poor, plus Entering the too high face of weld of amount can produce a large amount of welding slags.
Feldspar is added in the medicine core powder of metal powder core pattern seamless flux-cored wire of the invention.Feldspar can adjust molten iron and The viscosity of slag, is conducive to all-position welding.But addition is too high to cause flue dust and increase of splashing.Therefore the addition of feldspar Should control between 0.5%-2%.
Low-carbon ferromanganese is added in the medicine core powder of metal powder core pattern seamless flux-cored wire of the invention, main purpose is deoxidation While improve weld metal tensile strength and toughness.The too low weld metal intensity of content is too low, and too high levels cause weld seam Metal strength crosses high tenacity decline.Therefore the addition of low-carbon ferromanganese is 10%-15%.
Atomization ferrosilicon is added in the medicine core powder of metal powder core pattern seamless flux-cored wire of the invention.Silicon is important deoxidation unit Element, while being also intensified element, a certain amount of silicon plays an important roll for improving intensity and toughness, but the silicon of excess can be disliked Change weld metal low-temperature flexibility.Therefore the addition of atomization ferrosilicon is 15%-20%.
Atomization nickel powder is added in the medicine core powder of metal powder core pattern seamless flux-cored wire of the invention, main purpose is to improve The impact flexibility of weld metal.
Ice crystal and quartz are added in the medicine core powder of metal powder core pattern seamless flux-cored wire of the invention, main purpose is to adjust Saving the fusing point and viscosity of slag makes adaptation for all-position welding.The spreadability that quartz can also improve slag is conducive to appearance of weld.
Heretofore described metal powder core pattern seamless flux-cored wire, medicine core powder is added using on-line synchronous, adds medicine core Crust steel band after powder, through roll shaping and soldering after, then annealed, tube reducing and copper coating treatment, what is prepared is seamless Flux-cored wire.
Heretofore described metal powder core pattern seamless flux-cored wire, a diameter of 1.0 mm of final products welding wire, 1.2mm, 1.6mm, the filling rate of medicine core powder is 14%-17%.
The beneficial effects of the invention are as follows:It is a kind of can all-position welding the weldering of ultralow-hydrogen low high-toughness metal powder core type seamless medicine core Silk, is adapted to carbon steel, the low-alloy steel all-position welding connect using 75-85% Ar+15-25% CO2 mixed gas arc weldings. Welding usability is good, stable mechanical property, and crack resistance is good, and diffusible hydrogen is low, and anti-moisture absorption is strong, can all-position welding.
Specific embodiment
Specific embodiment is as follows:
Embodiment 1:Medicine core powder composition low-carbon ferromanganese 10%, atomization ferrosilicon 20%, rutile 3%, ice crystal 1%, atomization nickel powder 3%, stone English 1%, feldspar 2%, surplus iron powder.Filling rate 16%, gage of wire 1.2mm.
Embodiment 2:Medicine core powder composition low-carbon ferromanganese 15%, atomization ferrosilicon 18%, rutile 5%, ice crystal 1.5%, atomization nickel Powder 2%, quartz 1.5%, feldspar 0.5%, surplus iron powder.Filling rate 14%, gage of wire 1.0mm.
Embodiment 3:Medicine core powder composition low-carbon ferromanganese 12%, atomization ferrosilicon 15%, rutile 2%, ice crystal 5%, atomization nickel powder 1%th, quartz 2%, feldspar 1.5%, surplus iron powder.Filling rate 17%, gage of wire 1.6mm.
The preparation method of metal powder core pattern seamless flux-cored wire of the present invention is as follows:Crust selects common mild-carbon steel strip, changes Study point and performance is shown in Table shown in 2 and table 3.Welding wire deposited metal composition and mechanical property are shown in Table 4 and table 5.Deposited metal Diffusible hydrogen content is shown in Table 6.
The chemical composition of the metal powder core pattern seamless flux-cored wire medicine core powder of the embodiment of the present invention of table 1(Weight %)
Low-carbon ferromanganese Atomization ferrosilicon Rutile Ice crystal Quartz Feldspar Atomization nickel powder Iron powder
Embodiment 1 10 20 3 1 1 2 3.5 Surplus
Embodiment 2 15 18 5 1.5 1.5 0.5 5 Surplus
Embodiment 3 12 15 2 5 2 1.5 1 Surplus
Chemical composition of the metal powder core pattern seamless flux-cored wire of the embodiment of the present invention of table 2 from steel band(Weight %)
Chemical composition C Si Mn S P Fe
Weight % 0.035 0.02 0.22 0.005 0.01 Surplus
Performance of the metal powder core pattern seamless flux-cored wire of the embodiment of the present invention of table 3 from steel band
Performance Microhardness(HV) Tensile strength(MPa) Elongation(%)
Guarantee value 188 340 44
The chemical composition of the metal powder core pattern seamless flux-cored wire deposited metal of the embodiment of the present invention of table 4(Weight %)
C Si Mn S P Ni
Embodiment 1 0.073 0.70 1.58 0.0056 0.012 0.48
Embodiment 2 0.081 0.65 1.65 0.0051 0.013 0.28
Embodiment 3 0.069 0.60 1.60 0.0050 0.013 0.17
The mechanical property of the metal powder core pattern seamless flux-cored wire deposited metal of the embodiment of the present invention of table 5
Performance indications Yield strength(MPa) Tensile strength(MPa) The contraction percentage of area(%) Elongation percentage(%) - 60 DEG C of ballistic works(J)
Embodiment 1 506 606 62 27.5 130
Embodiment 2 532 616 69 27 116
Embodiment 3 548 666 56 25.5 117
The diffusible hydrogen content of the metal powder core pattern seamless flux-cored wire deposited metal of the embodiment of the present invention of table 6
Diffusible hydrogen content(ml/100g)
Embodiment 1 2.17
Embodiment 2 2.23
Embodiment 3 2.10
Technical scheme and implementation method and non-limiting cited by the present invention, with the technical scheme cited by the present invention and implementation Mode is equivalent or effect same approach is all in the range of the present invention is protected.

Claims (1)

1. the ultralow-hydrogen low high-toughness metal powder core type seamless flux-cored wire of a kind of all-position welding, crust and medicine core powder, medicine core powder It is filled in inside crust, the crust is mild-carbon steel strip, it is characterised in that:The percentage by weight of each component is in medicine core powder:It is low Carbon ferromanganese 10-15%, atomization ferrosilicon 15%-20%, rutile 2%-5%, ice crystal 1%-5%, atomization nickel powder 1%-3%, quartz 1%- 2%th, feldspar 0.5-2%, balance of iron powder.
CN201710136732.7A 2017-03-09 2017-03-09 A kind of ultralow-hydrogen low high-toughness metal powder core type seamless flux-cored wire of all-position welding Active CN106891104B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111055040A (en) * 2019-10-29 2020-04-24 洛阳双瑞特种合金材料有限公司 Thermal crack resistant seamless flux-cored wire under large restraint condition

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58132393A (en) * 1982-01-30 1983-08-06 Sumikin Yousetsubou Kk Composite wire for welding 9% ni steel
JPS6234697A (en) * 1985-08-09 1987-02-14 Daido Steel Co Ltd Flux cored wide for welding
CN1454742A (en) * 2003-01-21 2003-11-12 湘潭大学 Cored welding wire for eliminating stress hardening
CN101428376A (en) * 2008-12-10 2009-05-13 天津三英焊业股份有限公司 High-chromium-manganese austenitic steel alkalescent full-position gas-protection flux-cored wire
CN102179640A (en) * 2011-04-26 2011-09-14 武汉铁锚焊接材料股份有限公司 High-strength and high-toughness metal powder flux-cored wire
CN104526188A (en) * 2014-12-24 2015-04-22 洛阳双瑞特种合金材料有限公司 Seamless flux-cored wire with postwelding stress relieving heat treatment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58132393A (en) * 1982-01-30 1983-08-06 Sumikin Yousetsubou Kk Composite wire for welding 9% ni steel
JPS6234697A (en) * 1985-08-09 1987-02-14 Daido Steel Co Ltd Flux cored wide for welding
CN1454742A (en) * 2003-01-21 2003-11-12 湘潭大学 Cored welding wire for eliminating stress hardening
CN101428376A (en) * 2008-12-10 2009-05-13 天津三英焊业股份有限公司 High-chromium-manganese austenitic steel alkalescent full-position gas-protection flux-cored wire
CN102179640A (en) * 2011-04-26 2011-09-14 武汉铁锚焊接材料股份有限公司 High-strength and high-toughness metal powder flux-cored wire
CN104526188A (en) * 2014-12-24 2015-04-22 洛阳双瑞特种合金材料有限公司 Seamless flux-cored wire with postwelding stress relieving heat treatment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111055040A (en) * 2019-10-29 2020-04-24 洛阳双瑞特种合金材料有限公司 Thermal crack resistant seamless flux-cored wire under large restraint condition

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Effective date of registration: 20210122

Address after: No. 169, Binhe South Road, Luolong District, Luoyang City, Henan Province

Patentee after: NO.725 RESEARCH INSTITUTE OF CHINA SHIPBUILDING INDUSTRY Corp.

Address before: 471000 No.20, Yanguang Road, high tech Development Zone, Luoyang City, Henan Province

Patentee before: LUOYANG SHUANGRUI SPEICAL ALLOY MATERIAL Co.,Ltd.