Welding wire for TIG welding with welding flux cortex

A technology of argon tungsten arc welding and flux, applied in arc welding equipment, welding medium, welding equipment, etc., can solve problems such as difficulty in ensuring welding quality, surface oxidation of base metal, poor welding performance, etc., and achieve good fluidity, Improve the welding ability and the effect of good welded joints

Inactive Publication Date: 2008-06-04
上海斯米克焊材有限公司
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AI Technical Summary

Problems solved by technology

However, when this kind of light welding wire is welding slightly thicker plates, due to the need to increase the preheating temperature (> 400 ℃), the surface of the base metal is severely oxidized, resulting in poor welding performance, and sometimes pores still appear, making it difficult to ensure welding quality

Method used

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Examples

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specific Embodiment approach

[0011] A welding wire for red copper tungsten argon arc welding with a flux coating layer includes a welding core, a layer of flux is coated on the surface of the welding core, and acrylic resin is used to bond the welding core and the flux. The welding wire is deoxidized copper containing less than 0.5% Si, less than <0.5% Mn and less than <1.0% Sn.

[0012] In the first embodiment of the present invention, the flux is 40% H 3 BO 7 , 50%K 2 B 4 o 7 and 10% K 2 SiF 6 ; The thickness of the solder layer is 0.1mm.

[0013] The tensile strength of the welding wire is 200N / mm2; the elongation is 30%;

[0014] Its conductivity is 15-20m / Ω·mm2; hardness is 60HB.

[0015] In the second embodiment of the present invention, the flux is 50% H 3 BO 7 , 40%K 2 B 4 o 7 and 10% K 2 SiF 6 ; The thickness of the flux layer is 0.08mm.

[0016] And in the third embodiment of the present invention, described flux is 60%H 3 BO 7 , 30%K 2 B 4 o 7 and 10% K 2 SiF 6 ; The thic...

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Abstract

The invention relates to various welding production requirement field, in particular to a welding wire used for tungsten electrode argon arc welding (TIG welding). A welding wire used for red-copper tungsten electrode argon arc welding with flux drug layer comprises a welding core; the surface of the polished welding wire is pressed and coated with flux; the welding wire and the flux are bonded together by acrylic resin. The flux in liquid state has extremely strong film-removing capability which can rapidly react copper oxide into sinter which floats on the surface of a melting pool, reduces surface tension, improves lubrication performance, improves welding capability, thus obtaining excellent welding joint.

Description

technical field [0001] The invention relates to various fields requiring welding production, and is a welding wire used for tungsten argon arc welding (TIG welding). Background technique [0002] At present, the welding wires for copper tungsten argon arc welding (TIG welding) are light welding wires. In order to ensure the quality of the weld, the welding wire is made of deoxidized copper with a small amount of Si (<0.5%), Mn (<0.5%), P (<0.15%), Ti (<0.5%) and other deoxidizing elements. Sn (<1.0%) can be added. However, when this kind of light welding wire is welding slightly thicker plates, due to the need to increase the preheating temperature (> 400 ° C), the surface of the base metal is severely oxidized, resulting in poor welding performance, and sometimes pores still appear, making it difficult to ensure welding quality. Contents of the invention [0003] The present invention aims to solve the above problems, and provides a copper tungsten arg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/02B23K35/365B23K35/30B23K9/16
Inventor 邓键
Owner 上海斯米克焊材有限公司
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