A quasi-synchronous active welding method for sapphire and metal
A metal welding and welding method technology, applied in the field of quasi-synchronous active welding of sapphire and metal, can solve the problems of low weld strength, large residual stress, and small residual stress, and achieve good wetting effect and small welding residual stress , the effect of small heat-affected zone
Active Publication Date: 2020-03-24
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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Problems solved by technology
[0005] The present invention aims to solve the technical problems such as low weld strength, low efficiency, and large residual stress in the existing methods, and proposes a quasi-synchronous active welding method for sapphire and metal with high weld strength and small residual stress
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[0036] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0037] as attached figure 1 As shown, the induced energetic multilayer film 3 (such as Al / Ni, Al / CuO, Al / MoO 3 etc.) as the solder for sapphire 1 and metal 2 and provide the soldering energy by self-propagating reactions of energetic multilayer films. The laser beam 4 emitted by the scanning galvanometer 5 rapidly scans the welding path to induce a quasi-synchronous self-propagating reaction of the energetic multilayer film 3 , forming quasi-synchronous welding and reducing residual stress. Before welding, the welding surface of sapphire 1 and metal 2 is subjected to laser roughening treatment and an active nickel film is plated on the welding surface to increase the wetting of the solder to the welding sample.
[0038] A more specific example is as follows:
[0039] A quasi-synchronous welding method for sapphire and metal, the operation st...
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Abstract
The invention discloses a quasi-synchronous active welding method for sapphire and metal. The method comprises the following steps that firstly, the welding faces of the sapphire and the metal are machined flatly and cleaned; secondly, the sapphire welding face and the metal welding face are roughened; thirdly, the welding faces are evenly plated with a layer of nickel active film; fourthly, a layer of heat resisting rubber is laid to the welding table top to serve as a substrate, then, a welding sample is clamped, and an I-shaped groove is reserved; fifthly, multiple layers of energy containing films are tailored according to the groove shape and placed in the I-shaped groove; sixthly, the multiple layers of films in the I-shaped groove are pressed; and seventhly, laser scanning equipmentis adopted for implementing the welding procedure, the whole welding path is rapidly scanned through a laser, the multiple layers of energy containing films can almost be ignited at the same time through the laser energy and can be subjected to self-propagating reaction, the welding faces are melted and wetted, and accordingly sapphire and metal welding is achieved. The films are prone to being tailored into various shapes, and the quasi-synchronous active welding method is suitable for welding lines different in shape.
Description
technical field [0001] The invention relates to a welding method, in particular to a quasi-synchronous active welding method for sapphire and metal, and belongs to the technical field of dissimilar material welding. Background technique [0002] Sapphire has high mechanical strength and excellent optical transmission properties, and is widely used in optics, electronics, and watch industries. Due to the special requirements and limitations in terms of structure and performance, it often involves the welding package of sapphire structural parts and metal structural parts. Due to the obvious differences in the physical and chemical properties of sapphire and metal, it is difficult to achieve high-quality welding of sapphire and metal, and the domestic related technology is not yet mature. At present, the methods that can realize the welding of sapphire and metal include fusion welding, glass welding, diffusion welding and brazing, among which brazing is the most widely used p...
Claims
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IPC IPC(8): B23K26/324B23K26/60
Inventor 唐舵王亮李勇覃文志吉祥波高原
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS