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A kind of al-cu-si stranded welding wire and preparation method thereof

An al-cu-si, al-si technology, applied in welding equipment, manufacturing tools, welding media, etc., to achieve the effect of low heat input, high efficiency, and high joint strength

Active Publication Date: 2021-03-23
河北联之捷焊业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: aiming at the problems existing in the above-mentioned prior art, the present invention provides a kind of Al-Cu-Si stranded welding wire and its preparation method, which can solve the problem of the third-generation aluminum-lithium alloy in aerospace, etc. Welding instead of riveting in field application

Method used

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  • A kind of al-cu-si stranded welding wire and preparation method thereof
  • A kind of al-cu-si stranded welding wire and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] A SAL 1100 center filament, two SAL 2319 and two SAL 4043 peripheral thick wires, four SAL2319 peripheral adjustment wires, two SAL 2319 and two SAL 4043 peripheral thick filaments should be interlaced. The twisted process parameters are: the twist is 8 times the tweet metal equivalent diameter, the tension is 12% tension, the number of revolutions is 350R / min, and the chemical composition of the obtained welding wire is Cu: 3.6%, Si: 2.1%, Fe: 0.14%, Mn: 0.20%, Mg: 0.05%, Zn: 0.05%, Ti: 0.15%, Zr: 0.15%, V: 0.10%, the rest is Al and very unavoidable impurities.

Embodiment 2

[0034] A SAL 1100 center filament, two SAL 2319 and two SAL 4043 peripheral thick wires, two SAL2319 and two SAL 1100 peripheral adjustment wire, two SAL 2319 and two SAL 4043 peripheral thick wire should Interlaced layout, two SAL 2319 and two SAL 1100 peripheral adjustment wire should also be interlaced. The twisted process parameters are: the twist wondering wire equivalent diameter, the tension is 12% equipment tension, the number of revolutions is 400R / min, and the chemical composition of the obtained welding wire is Cu: 3.0%, Si: 2.25%, Fe: 0.15%, Mn: 0.15%, Mg: 0.009%, Zn: 0.006%, Ti: 0.085%, Zr: 0.05%, V: 0.057%, the rest is Al and very unavoidable impurities.

Embodiment 3

[0036] A SAL 1100 center filament, two SAL 2319 and two SAL 4043 peripheral thick wire, two SAL2319, one SAL 1100 and a SAL 4043 peripheral adjustment wire for twisted, two SAL 2319 and two SAL4043 The peripheral thick wire is interlaced, and the two SAL 2319 peripheral adjustment wire should also be arranged. Two process parameters: The twist wire equivalent diameter of 11.6 times, the tension is 13% equipment tension, the number of revolutions is 500r / min, the chemical composition of the resulting welding wire is Cu: 3.22%, Si: 2.5%, Fe : 0.156%, Mn: 0.007%, Mg: 0.007%, Zn: 0.009%, Ti: 0.05%, Zr: 0.104%, V: 0.01%, the rest is Al and a very small amount of inevitable impurities.

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Abstract

The invention relates to an Al-Cu-Si stranded welding wire and a preparation method thereof, and belongs to the technical field of welding. The stranded welding wire is formed by twisting a center fine wire, four peripheral thick wires and four peripheral adjusting wires; and the stranded welding wire comprises the following components: 3.0-3.6% of Cu, 2.1-2.5% of Si, Fe not more than 0.20%, 0.10-0.20% of Mn, Mg not more than 0.05%, Zn not more than 0.05%, 0.05-0.15% of Ti, 0.05-0.15% of Zr, 0.01-0.10% of V, and the balance of Al. Microalloy elements of Ti and Zr in the welding wire achieve agrain refining effect; Mn and V can inhibit recrystallization; Si can effectively improve the fluidity of clad metal and the corrosion resistance of welding lines; during welding, the strength of joints is high, and is higher by 50-80 MPa compared with conventional MIG welding conditions; and no welding hot crack is generated.

Description

Technical field [0001] The present invention relates to an Al-Cu-Si gynamism wire and a preparation method thereof, belonging to the field of welding technology. Background technique [0002] Each of the aluminum lithium alloys increases by 1%, density can be reduced by 3%, while the elastic modulus can increase by 6%, which has the advantages of light quality, high modulus and high strength. With the in-depth and industrialization of R & D, the third generation of aluminum lithium alloy (such as 2195, 2196, 2197, 2198, 2099, 2050, etc.) has also been equally light, the ratio intensity and the ratio are high, and the crack extension rate is low, excellent. The low temperature performance, excellent solderability, fatigue resistance, corrosion resistance, and damage resistance, etc., the quality of the member can alleviate 10% to 15% relative to the conventional aluminum alloy, and the stiffness is increased by 15% to 20%. Therefore, there is more and more applications in aerospac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/28B23K35/40
CPCB23K35/288B23K35/40
Inventor 梁裕刘平礼冯昱
Owner 河北联之捷焊业科技有限公司
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