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Gas shielded welding wire for mutual welding copper and iron

A technology of gas protection, copper and iron, applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems of long heating time, low soldering strength, fading of steel parts, etc., and achieve short welding heating time , The shape of the solder joint is beautiful, and the effect of increasing the weldability

Inactive Publication Date: 2009-06-10
虞选勇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The soldering strength is low, the heating time of brazing is long, it is easy to cause the steel parts to fade, and the shape of the solder joints is difficult to control, which is not beautiful
However, the current gas shielded welding cannot weld copper parts and steel parts to each other

Method used

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Examples

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Comparison scheme
Effect test

Embodiment Construction

[0006] The present invention will be further described below according to the embodiments.

[0007] 25% iron, 70% copper, and 5% silver are smelted to make alloys, and the above alloys are made into hollow tubes, filled with borax, and then drawn into wires and strips.

[0008] The amount of borax used in the embodiment is 10-15% of the mass of the alloy bar.

[0009] When welding, it is welded according to the usual gas shielded welding process. The copper and iron components in the welding wire are used as solder, the added silver can increase the weldability, and the borax on the welding wire is used as flux, which can form penetration and composition with atoms of copper and steel materials. alloy, so as to carry out fusion welding to achieve the purpose of welding.

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Abstract

The invention relates to the field of welding, and provides a welding wire of gas shielded welding for copper-iron mutual welding. Iron, copper and silver are put into a crucible for smelting without air, and the mass ratios of iron, to copper to silver is 20-30 : 60-80 : 0-10; and after alloy is prepared, the alloy is used to prepare a pipe, an inner core of the pipe is filled with borax, and finally the pipe is drawn to be strip-formed. The components of copper and iron are taken as solder, the addition of silver can improve weldability, the borax on the welding wire is taken as soldering flux, and the welding wire can be used for welding in the mode of gas shielded welding; and the heating time of the welding is shorter than that of braze welding, the iron and steel parts are uneasy for annealing, and the shape of a welding spot is beautiful.

Description

technical field [0001] The invention relates to the field of welding, in particular to a welding wire for gas shielded welding. Background technique [0002] At present, the mutual welding of copper and iron can only be realized by brazing and tin welding. Brazing is welding with copper electrodes with oxygen welding; tin welding is welding with soldering iron. The soldering strength is low, and the heating time during brazing is long, which easily causes the steel parts to fade, and the shape of the solder joints is difficult to control, which is not beautiful. However, current gas shielded welding cannot weld copper parts and steel parts to each other. Contents of the invention [0003] The purpose of the present invention is to provide a gas shielded welding wire for mutual welding of two materials of copper and iron. [0004] The scheme of the present invention is: the gas-shielded welding wire used for mutual welding of copper and iron is to put iron, copper and sil...

Claims

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Application Information

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IPC IPC(8): B23K35/40B23K35/30B23K35/368
Inventor 虞选勇
Owner 虞选勇
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