Active flux for tungsten electrode inert gas argon arc welding and preparation method and use method of active flux

A technology of tungsten inert gas and active flux, which is applied in welding equipment, welding medium, manufacturing tools, etc., can solve the problems that have not been promoted in the industry, and achieve the effects of good forming, improved efficiency, and reasonable melting width

Active Publication Date: 2020-09-29
BEIBU GULF UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, although corresponding active fluxes have been successfully developed for low-carbon steel, stainless steel, aluminum alloy, titanium alloy and other metals at home and abroad, they have not yet been widely promoted in industry.

Method used

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  • Active flux for tungsten electrode inert gas argon arc welding and preparation method and use method of active flux
  • Active flux for tungsten electrode inert gas argon arc welding and preparation method and use method of active flux

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preparation example Construction

[0025] See figure 1 The present invention also proposes a preparation method of active flux for tungsten inert gas argon arc welding, comprising the following steps:

[0026] S10: Grinding and pulverizing dichromium oxide, manganese oxide, aluminum oxide, and calcium oxide, and then sieving to obtain a solid phase oxidation mixture.

[0027] S11: In this step, manual grinding or mechanical grinding can be used, for example: Weigh chromium oxide, manganese oxide, aluminum oxide, and calcium oxide according to each mass fraction of raw materials and put them into a mortar and grind them together into powder, and then use a sieve with a pore size of less than 74 microns to screen the ground powder, so that the particle size of the ground solid phase oxide is all less than 74 microns.

[0028] S12: Put the solid-phase oxidation mixture in a drying room with a relative humidity of 40% for 2h-3h.

[0029] S20: After drying the solid-phase oxidation mixture, add absolute ethanol an...

Embodiment 1

[0033] Put 40% chromium oxide, 15% manganese oxide, 20% aluminum oxide, and 15% calcium oxide into a grinding vessel and grind them into powder, and then use a sieve with a pore size of less than 74 microns to screen the ground powder , so that the particle size of the solid phase oxide after grinding is less than 74 microns; put the solid phase oxidation mixture into a drying room with a relative humidity of 40% for 2 hours; put the dried solid phase oxidation mixture into a container, and evenly add 10% absolute ethanol, in the process of adding absolute ethanol, constantly stir the solid-phase oxidation mixture and absolute ethanol, so that the mixture of the two is adjusted to a paste, and the activity of the tungsten inert gas argon arc welding of the present invention is obtained. flux.

Embodiment 2

[0035] Put 30% chromium oxide, 18% manganese oxide, 25% aluminum oxide, and 22% calcium oxide into a grinding vessel and grind them into powder, and then use a sieve with a pore size of less than 74 microns to screen the ground powder , so that the particle size of the solid phase oxide after grinding is less than 74 microns; the solid phase oxidation mixture is put into a drying room with a relative humidity of 40% for 2.5 hours; the dried solid phase oxidation mixture is put into a container, uniformly Add 5% absolute ethanol, and in the process of adding absolute ethanol, constantly stir the solid-phase oxidation mixture and absolute ethanol, so that the mixture of the two is adjusted to a paste, and the tungsten inert gas argon arc welding of the present invention is obtained. active flux.

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Abstract

The invention discloses an active flux for tungsten electrode inert gas argon arc welding and a preparation method and a use method of the active flux. The active flux for tungsten electrode inert gasargon arc welding is prepared from 30%-40% of chromium sesquioxide, 15%-25% of manganese oxide, 20%-30% of aluminum oxide, 15%-25% of calcium oxide and 5%-10% of absolute ethyl alcohol. In the usingprocess of the active flux for tungsten electrode inert gas argon arc welding, while the weld seam penetration and the depth-to-width ratio of a target workpiece are greatly improved, the welding efficiency is improved. Then, after the active flux for tungsten electrode inert gas argon arc welding is adopted for welding, the welding surface of the target workpiece is well formed, no slag inclusions or air holes are generated, the weld reinforcement and the weld width are reasonable, and harmful effects are greatly reduced. At the same time, the hardness of weld seams, heat affected zones and base metal near the weld seams can be improved to a certain degree. It is proved through a tensile experiment that the tensile strength of the positions of the weld seams where the active flux is usedis higher than that of the base metal.

Description

technical field [0001] The invention relates to the technical field of dock welding, in particular to an active flux for tungsten inert gas argon arc welding and its preparation method and use method. Background technique [0002] Non-melting extremely inert gas shielded arc welding (TIGTungstenInertGasWelding) welding technology was first proposed by the Ukrainian Barton Research in the 1960s, and it has been extensively studied in China since the 1990s. At present, although corresponding active fluxes have been successfully developed for low-carbon steel, stainless steel, aluminum alloy, titanium alloy and other metals at home and abroad, they have not been widely promoted in industry. Especially the active flux formula applied to the 320 marine pipeline steel in the field of ship welding is almost blank at present. Contents of the invention [0003] The main purpose of the present invention is to provide an active flux for tungsten inert gas argon arc welding, aiming a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/36B23K35/362B23K35/40
CPCB23K35/36B23K35/362B23K35/40B23K35/3601
Inventor 张立志石南辉张蕾蕾罗时鹏张世业刘松梅王日贵
Owner BEIBU GULF UNIV
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