Active agent for laser welding of aluminum-magnesium alloy and application of active agent

A laser welding, aluminum-magnesium alloy technology, applied in laser welding equipment, welding medium, welding equipment and other directions, can solve the problem of thick plate penetration and other problems, and achieve the effect of enhancing slag removal and performance.

Active Publication Date: 2018-03-09
BEIJING HANGTIAN XINFENG MECHANICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides an activator for laser welding of aluminum-magnesium alloys and a method for using the same, which solves the problem of penetration depth of aluminum alloy laser welding thick plates. An activator for laser welding of aluminum-magnesium alloys consists of silicon dioxide (SiO2), calcium oxide (CaO), manganese dioxide (MnO2), the carbonate composition of calcium, its mass ratio is respectively 45%-55%: 16%-22%: 10%-18%: 29~5%, and its application is:

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A kind of active agent, is made up of silicon dioxide (SiO2), calcium oxide (CaO), manganese dioxide (MnO2), calcium carbonate, and its mass ratio is respectively 45%: 16%: 10%: 29%, and its use The method is:

[0014] In the first step, mix SiO2, CaO, MnO2, and calcium carbonate with a particle size of 45 microns in a ratio of 45:16:10:29;

[0015] In the second step, dilute the mixed active agent powder with acetone at a ratio of 1:3.5, and make it into a paste;

[0016] The third step is to grind and clean the 10 mm area around the butt weld;

[0017] The fourth step is to brush the paste active agent on the cleaned area with a brush, and the thickness of the coating is 1-2 mm;

[0018] The fifth step is to dry for five minutes and then solder.

Embodiment 2

[0020] A kind of active agent, is made up of silicon dioxide (SiO2), calcium oxide (CaO), manganese dioxide (MnO2), calcium carbonate, and its mass ratio is respectively 55%: 22%: 18%: 5%, and its use The method is:

[0021] In the first step, mix SiO2, CaO, MnO2, and calcium carbonate with a particle size of 45 microns in a ratio of 55:22:18:5;

[0022] In the second step, dilute the mixed active agent powder with acetone at a ratio of 1:3.5, and make it into a paste;

[0023] The third step is to grind and clean the 10 mm area around the butt weld;

[0024] The fourth step is to brush the paste active agent on the cleaned area with a brush, and the thickness of the coating is 1-2 mm;

[0025] The fifth step is to dry for five minutes and then solder.

Embodiment 3

[0027] A kind of active agent, is made up of silicon dioxide (SiO2), calcium oxide (CaO), manganese dioxide (MnO2), calcium carbonate, and its mass ratio is respectively 50%: 20%: 15%: 5%, and its use The method is:

[0028] In the first step, mix SiO2, CaO, MnO2, and calcium carbonate with a particle size of 45 microns in a ratio of 50:20:15:5;

[0029] In the second step, dilute the mixed active agent powder with acetone at a ratio of 1:3.5, and make it into a paste;

[0030] The third step is to grind and clean the 10 mm area around the butt weld;

[0031] The fourth step is to brush the paste active agent on the cleaned area with a brush, and the thickness of the coating is 1-2 mm;

[0032] The fifth step is to dry for five minutes and then solder.

[0033] The active agent in the present invention is developed for the laser welding processing of aluminum-magnesium alloys. Non-toxic components are used to replace highly toxic fluorides. By adding elements such as Ca and...

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Abstract

The invention provides an active agent for laser welding of aluminum-magnesium alloy and an application of the active agent and solves the problem about welding penetration of a thick plate by aluminum alloy laser welding. The active agent is prepared from the following raw materials in percentage by mass: 45%-55% of silicon dioxide, 16%-22% of calcium oxide, 10%-18% of manganese dioxide and 29%-5% of carbonate of calcium. According to the active agent, non-toxic components are used for substituting for highly toxic fluoride; due to the addition of Ca, Mn and the other elements, the arc shapeand the surface tension of a welding molten pool are changed, and the deslagging property of the active agent and the appearance of the aluminum-magnesium alloy after welding are enhanced; performanceof the active agent is enhanced by strictly controlling the particle size range. The laser welding quality of the aluminum alloy is ensured while the welding penetration is enhanced.

Description

technical field [0001] The invention relates to a green and environment-friendly welding auxiliary product, in particular to an active agent and its application. Background technique [0002] Laser welding of aluminum-magnesium alloys has the advantages of concentrated energy and small heat-affected zone, but there is still the problem of insufficient welding penetration when welding thick plates. At present, the best way to solve this problem is to use activator-assisted welding. [0003] Several typical similar patent documents can be found through patent searches: ① "An Activator for Laser Welding of Nickel-Based Superalloys and Its Application Method (CN201410123398.8)", ② "A Laser Welding Agent for Ferritic Stainless Steel Activating agent for welding and its use method (CN201210215534.7)", ③"An activating agent for laser welding and a laser welding method using it (CN201010528769.2)". Among them, documents ① and ② are for nickel-based superalloys and stainless steel, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/362B23K35/40B23K26/70
Inventor 王小博李昊丞
Owner BEIJING HANGTIAN XINFENG MECHANICAL EQUIP
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