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Electroless welding rod

A technology without electrode and flux, applied in welding equipment, welding medium, welding equipment and other directions, can solve the problems of high risk, complex welding flux composition, serious welding spatter, etc., to increase welding heat and improve welding slag removal. resistance, avoid the effect of slipping off the casing

Active Publication Date: 2014-08-06
成都银河动力有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flux composition is extremely complex, and KClO 3 It is a highly sensitive explosive agent, and it will form an explosive mixture when mixed with powder such as S in the welding flux, which is extremely dangerous
At the same time, KNO 3 +S+C mixed powder will undergo black powder reaction to generate N 2 and CO 2 , has an impact on the liquid metal, resulting in serious welding spatter

Method used

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  • Electroless welding rod

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Drug tube size: diameter 12mm, length 130mm; welding flux formula: by mass percentage, CuO powder 58.0%, Al powder 18.0%, Si-Ca alloy powder 6.7%, CaF 2 Powder 5.8%, B powder 1.0%, Fe powder 9.5%, Mn powder 1.0%. Base material to be welded: Two Q235 steel plates of 70mm×30mm×3mm are butt welded on a flat plate; process parameters: welding inclination angle 80°, welding rod flame length about 6mm, welding speed 9mm / s; welding effect: weld shape is good, reaching single Double-sided forming effect of surface welding.

Embodiment 2

[0033] Drug tube size: diameter 12mm, length 140mm; welding flux formula: by mass percentage, CuO powder 62.0%, Al powder 15.5%, Si-Ca alloy powder 6.0%, CaF 2 Powder 6.3%, B powder 0.7%, Fe powder 9.0%, Mn powder 0.5%; base material to be welded: two Q235 steel plates of 70mm×30mm×5mm for flat butt welding; process parameters: welding inclination angle 80°, electrode flame length About 6mm, welding speed 8mm / s; Welding effect: The welding seam is well formed, achieving the effect of single-sided welding and double-sided forming.

Embodiment 3

[0035] Drug tube size: diameter 12.5mm, length 150mm; welding flux formula: by mass percentage, CuO powder 66.0%, Al powder 17.0%, Si-Ca alloy powder 5.0%, CaF 2 Powder 5.5%, B powder 0.8%, Fe powder 5.2%, Mn powder 0.5%; base material to be welded: two 70mm×30mm×3mm stainless steel plates for flat butt welding; process parameters: welding inclination angle 80°, electrode flame length About 6mm, welding speed 7mm / s; Welding effect: The welding seam is well formed, achieving the effect of single-sided welding and double-sided forming.

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Abstract

The invention belongs to the technical field of special welding and relates to an electroless welding rod. The electroless welding rod is composed of a welding agent pipe, welding agents, an ignition cap, a clamping end and a sleeve, wherein the welding agents are loaded in the welding agent pipe, one end of the welding agent pipe is connected with the clamping end, the other end of the welding agent pipe is inserted into the ignition cap to be encapsulated, and the welding agent pipe and the ignition cap are arranged in the sleeve with one end closed. The welding agents include, by mass, 58.0%-70.0% of CuO powder, 13.0%-18.0% of Al powder, 5.0%-6.7% of Si-Ca alloy powder, 5.0%-6.3% of CaF2 powder, 0.7%-1.5% of B powder, 4.8%-9.5% of Fe powder, and 0.4%-1.0% of Mn powder. The welding rod is small in size and convenient to carry, materials for manufacturing are easy to obtain, price is low, welding is easy, and welding of various materials such as ordinary steel, stainless steel and copper can be realized.

Description

technical field [0001] The invention belongs to the technical field of special welding, and relates to a welding rod, in particular to a non-electric welding rod suitable for welding common steel, stainless steel, copper and other materials. Background technique [0002] Welding technology is an important means of civil, construction machinery and military equipment and manufacturing, rush repair and emergency maintenance and installation. Traditional welding methods mainly use electric welding, gas welding, etc., but electrode arc welding requires a welding power supply capable of outputting more than a kilowatt and a heavy electric welding machine, while gas welding requires high-voltage special equipment for storing flammable gases such as oxygen and acetylene, which involves extremely high engineering costs. Large, and the operator must receive special training. This greatly limits the flexible, flexible and efficient deployment of emergency welding repair tasks in the ...

Claims

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Application Information

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IPC IPC(8): B23K35/34B23K23/00
CPCB23K35/0266B23K35/3602B23K35/368B23K35/406
Inventor 张国栋杨辉肖亚东李莉张晖邱智华张雅芝
Owner 成都银河动力有限公司
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