CN104741822A - Gas shielded welding wire - Google Patents

Gas shielded welding wire Download PDF

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Publication number
CN104741822A
CN104741822A CN201310736982.6A CN201310736982A CN104741822A CN 104741822 A CN104741822 A CN 104741822A CN 201310736982 A CN201310736982 A CN 201310736982A CN 104741822 A CN104741822 A CN 104741822A
Authority
CN
China
Prior art keywords
welding wire
gas
gas shield
gas shielded
welding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201310736982.6A
Other languages
Chinese (zh)
Inventor
宋波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI ATLANTIC WELDING CONSUMABLES CO Ltd
Original Assignee
SHANGHAI ATLANTIC WELDING CONSUMABLES CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHANGHAI ATLANTIC WELDING CONSUMABLES CO Ltd filed Critical SHANGHAI ATLANTIC WELDING CONSUMABLES CO Ltd
Priority to CN201310736982.6A priority Critical patent/CN104741822A/en
Publication of CN104741822A publication Critical patent/CN104741822A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B23K35/24Selection of soldering or welding materials proper
    • B23K35/30Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3053Fe as the principal constituent
    • B23K35/3073Fe as the principal constituent with Mn as next major constituent
    • 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
    • B23K9/00Arc welding or cutting
    • B23K9/16Arc welding or cutting making use of shielding gas
    • B23K9/173Arc welding or cutting making use of shielding gas and of a consumable electrode

Abstract

The invention discloses a gas shielded welding wire. The gas shielded welding wire comprises C not more than 1.0%, 1.20-1.60% of Mn, Si not more than 0.6%, S not more than 0.020%, P not more than 0.025%, 0.20-0.60% of Ni, 0.30-0.90% of Cr, 0.20-0.50% of Cu, 0.04-0.09% of Ti and the balance of Fe. Compared with the prior art, a low-alloy and high-toughness weathering resistant steel welding wire is simple and reasonable in component design; the gas shielded welding wire is used for welding, so that the strength and the toughness of welding line metal can be effectively improved; deposited metal of the gas shielded welding wire has excellent comprehensive mechanical performance; and the low-temperature toughness is obviously improved.

Description

A kind of gas shield welding wire
Technical field
The present invention relates to a kind of welding material, especially low-alloy high tenacity weathering steel gas shield welding wire, uses high-strength weather resisting steel.
Background technology
In the field of welding material of prior art, be comparatively used for the welding material of weather-resistant steel plate welding postwelding requirement high-strength and high-ductility, but those welding materials are generally welding rod.Due to the development of China railways cause, the demand for high-strength and high-ductility weathering steel increases day by day, and for the annual requirement of welding wire at more than 1000T, such steel are mainly used in the bogie of railway locomotive, the parts such as car body.Because welding rod efficiency is in use low, the demand of the weather-proof welded steel of current rail can not be met.
Summary of the invention
In order to meet the requirement of Novel welding material field, have developed a kind of gas shield welding wire, this gas shield welding wire, it is characterized in that, comprising: C≤1.0%, Mn are 1.20%-1.60%, Si≤0.6%, S≤0.020%, P≤0.025%, Ni be 0.20%-0.60%, Cr be 0.30%-0.90%, Cu be 0.20%-0.50%, Ti are 0.04%-0.09%.
Described gas shield welding wire, wherein more comprises Fe.
Described gas shield welding wire, wherein can adopt rich argon Shielding gas.
Described gas shield welding wire, the rich argon protective gas composition wherein welding gas shield welding wire be comprise 80% Ar.
Described gas shield welding wire, the rich argon protective gas composition wherein welding gas shield welding wire be more comprise 20% CO 2.
Detailed description of the invention
Be illustrated below in conjunction with detailed description of the invention:
In order to meet the requirement of Novel welding material field, have developed a kind of low-alloy high tenacity weathering steel gas shield welding wire, weld metal high-strength and high-ductility and the excellent gas protecting welding wire of welding technological properties can be met.
According to above-mentioned purpose; the wire composition (% by weight) that the present invention proposes a kind of low-alloy high-ductility gas shielded welding wire is: C≤1.0%, Mn are 1.20%-1.60%, Si≤0.6%, S≤0.020%, P≤0.025%, Ni be 0.20%-0.60%, Cr be 0.30%-0.90%, Cu be 0.20%-0.50%, Ti are 0.04%-0.09%, and all the other are Fe.In gas shield welding wire composition of the present invention, the content of C of the present invention is≤1.0%, the C of this content, can improve deposited metal intensity, reduces its toughness and cracking resistance and improve toughness and improve cracking resistance.
Gas shield welding wire of the present invention, can adopt rich argon Shielding gas, and rich argon protective gas composition comprises Ar and CO 2, wherein Ar content is 80%Ar, CO 2content is 20%.When adopting rich argon Shielding gas gas shield welding wire, the CO in rich argon protective gas 2decompose, discharge a certain amount of C content, and the C of the certain content discharged is transitted in gas shield welding wire.So the C content in gas shield welding wire should be≤0.10%.
Mn, Si in gas shield welding wire of the present invention are effective deoxidant elements in welding process, because the gas adopted has certain oxidisability, if the deoxidant element content in welding wire is low, can cause occurring the defects such as pore in weld metal, have a strong impact on weld metal inherent quality, if add Mn or Si separately, there is dreg defect in weld metal; So this programme adopts add Mn, Si simultaneously, Mn, Si of adding form large block silicate and float to weld pool surface simultaneously in liquid state molten pool, thus can obtain stay-in-grade weld metal.When welding, Mn, Si too high levels can cause weld metal intensity to raise, and toughness reduces, so Mn is 1.20%-1.60%, Si≤0.6% in this programme.Ni in the present invention can improve weld metal quenching degree, thus crystal grain thinning and malleableize matrix can improve the toughness of weld metal, reduce ductile-brittle transition temperature, when Ni content is less than 0.20%, low-temperature impact toughness can not meet instructions for use, can increase hot tearing sensitiveness when Ni too high levels.So the content of the Ni of this programme is 0.20%-0.60%.Cr in the present invention, can improve the atmospheric corrosion resistance of weld metal, on the other hand, when Cr is too high, worsens weld metal impact flexibility owing to can cause bainite tissue, therefore Cr scope is 0.30%-0.90%.Cu element in the present invention, strengthen the atmospheric corrosion resistance of weld metal, but too high Cu content can worsen weld metal impact flexibility, thus Cr scope most preferably scheme at 0.20%-0.50%.Ti element in the present invention, increasing the impact flexibility of weld metal, because Ti exists with oxide forms such as TiO in weld seam, is the core of acicular ferrite nucleating, so the formation of acicular ferrite in the promoted weld metal of Ti, thus weld metal is made to obtain excellent low-temperature impact toughness.But during Ti too high levels, Ti can be solid-solution in weld seam with elemental form, thus cause weld metal intensity sharply to raise, weld metal toughness sharply declines.
The present invention, as a kind of welding material welding weathering steel, not only requires that weld metal has excellent obdurability, also requires that welding wire has excellent welding technological properties in welding process simultaneously.The chemical analysis of welding wire plays conclusive effect to welding technological properties and weld metal mechanical property.
Adopt low-alloy high tenacity weathering steel gas shield welding wire of the present invention compared with prior art, there is Composition Design and see, rationally, adopt gas shield welding wire to carry out welding, effectively can improve intensity and the toughness of weld metal.The deposited metal of gas shield welding wire of the present invention has excellent comprehensive mechanical property, and its tensile strength is greater than 550MPa; Yield strength, at more than 450MPa, is greater than 100J at the ballistic work of-40 DEG C.Improve significantly in low-temperature flexibility.
Last it is noted that above embodiment only in order to illustrate the present invention and and unrestricted technical scheme described in the invention; Therefore, although this description reference the above embodiments are to present invention has been detailed description, those of ordinary skill in the art should be appreciated that and still can modify to the present invention or equivalent replacement; And all do not depart from technical scheme and the improvement thereof of the spirit and scope of the present invention, it all should be encompassed in right of the present invention.

Claims (5)

1. a gas shield welding wire, be characterised in that, it comprises: C≤1.0%, Mn are 1.20%-1.60%, Si≤0.6%, S≤0.020%, P≤0.025%, Ni be 0.20%-0.60%, Cr be 0.30%-0.90%, Cu be 0.20%-0.50%, Ti are 0.04%-0.09%.
2. gas shield welding wire according to claim 1, wherein, more comprises Fe.
3. gas shield welding wire according to claim 1, wherein, can adopt rich argon Shielding gas.
4. gas shield welding wire according to claim 3, wherein, the described rich argon protective gas composition welding described gas shield welding wire be comprise 80% Ar.
5. gas shield welding wire according to claim 4, wherein, the described rich argon protective gas composition welding described gas shield welding wire be more comprise 20% CO 2.
CN201310736982.6A 2013-12-27 2013-12-27 Gas shielded welding wire Pending CN104741822A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310736982.6A CN104741822A (en) 2013-12-27 2013-12-27 Gas shielded welding wire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310736982.6A CN104741822A (en) 2013-12-27 2013-12-27 Gas shielded welding wire

Publications (1)

Publication Number Publication Date
CN104741822A true CN104741822A (en) 2015-07-01

Family

ID=53582384

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310736982.6A Pending CN104741822A (en) 2013-12-27 2013-12-27 Gas shielded welding wire

Country Status (1)

Country Link
CN (1) CN104741822A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106425159A (en) * 2016-11-25 2017-02-22 上海大西洋焊接材料有限责任公司 Gas shielded welding wire for automatic welding of 07MnMoVR spherical tank
CN107350657A (en) * 2017-05-27 2017-11-17 内蒙古包钢钢联股份有限公司 Weld railway vehicle dynamics gas protecting welding wire
WO2021078136A1 (en) * 2019-10-21 2021-04-29 宝山钢铁股份有限公司 Wire rod for gas protection welding wire, and welding wire

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106425159A (en) * 2016-11-25 2017-02-22 上海大西洋焊接材料有限责任公司 Gas shielded welding wire for automatic welding of 07MnMoVR spherical tank
CN107350657A (en) * 2017-05-27 2017-11-17 内蒙古包钢钢联股份有限公司 Weld railway vehicle dynamics gas protecting welding wire
WO2021078136A1 (en) * 2019-10-21 2021-04-29 宝山钢铁股份有限公司 Wire rod for gas protection welding wire, and welding wire

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PB01 Publication
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20150701