Laser welding method for amorphous matrix material

A technology for laser welding and amorphous substrates, applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of difficult welding of amorphous substrates and stainless steel, high equipment requirements, etc., achieve high welding strength and reduce equipment requirements, the effect of expanding the field of use
CN102430862AActive Publication Date: 2012-05-02BYD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BYD CO LTD
Publication Date
2012-05-02

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Abstract

The invention provides a laser welding method for an amorphous matrix material. The laser welding method comprises the following step of welding a weldment on a matrix material to be welded by using pulse laser under the protection of inert atmosphere, wherein the matrix material to be welded is amorphous alloy, and the weldment is amorphous alloy or stainless steel; and the welding conditions are as follows: the laser power is 1-6.5 kW, the spot diameter is 0.1-1.0 mm, the laser emitting frequency is 1-20 Hz, the gas pressure of the inert atmosphere is 0.1-1 MPa, and the gas flow of the inert atmosphere is 1-15 mL / min. The laser welding method for the amorphous matrix material, provided by the invention, not only can be used for welding among amorphous alloys, but also can be used for welding between the amorphous alloy and stainless steel. No obvious crystallization phenomenon occurs before and after welding, and the welding strength is higher.
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Description

technical field

[0001] The invention belongs to the field of laser welding, in particular to a laser welding method for an amorphous substrate. Background technique

[0002] Amorphous alloy is a metastable material, and it is easy to change to a more stable crystalline state under the influence of external high temperature. Therefore, the temperature should not be too high during amorphous welding, and the welding speed must be fast, and it must be carried out under the protection of inert gas. In order to avoid oxidation and overheating lead to the transformation of amorphous into crystal. Therefore, conventional welding methods, such as energy storage welding, friction welding, resistance welding, etc., are not suitable for welding amorphous materials. The welding of amorphous substrates has become a technical difficulty in the expansion of the application of amorphous materials.

[0003] Disclosed in CN1386605A is a resistance welding method for zirconium-based amorphou...

Claims

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