Laser machining method and welding tool for capacitive transducer

Abstract

The invention relates to a laser machining method and a welding tool for a capacitive transducer. The laser machining method comprises the following steps of machining and forming a cylinder body, an ultrathin metal plate and a lap joint circular ring, and machining and forming an annular mounting groove in one end of the cylinder body; sequentially assembling the ultrathin metal plate and the lap joint circular ring through a welding tool and pressing the ultrathin metal plate and the lap joint circular ring in the mounting groove in one end of the cylinder body, wherein the diameter of the ultrathin metal plate is equal to that of the mounting groove, and welding interfaces are arranged between the peripheral wall of the lap joint circular ring and the cylinder body; introducing protective gas into the cylinder body; and using a laser welding device for sequentially completing welding of the welding interfaces. According to the method, laser sealing welding of the ultrathin metal plate can be realized, the welding quality can be improved, the air tightness of the capacitive transducer is ensured, and meanwhile, the product percent of pass is improved.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a laser processing method of a bellows and a welding tool. Background technique [0002] Laser welding is an advanced method that uses a high-energy laser beam to focus on the surface of a material, so that the material is rapidly heated, melted, and solidified to form a weld to achieve the connection between atoms. Because of its high processing precision, high efficiency, small deformation and small heat-affected zone, laser welding is widely used in connection processing in modern aviation, aerospace, automobile and other fields. [0003] Laser welding is divided into heat conduction welding and deep penetration welding according to the welding mode. Heat conduction welding is generally used for shallow penetration below 0.5mm or connection of material surface; The instantly vaporized metal vapor and the reaction force of the plasma form a "small hole" to obtain a larger pen...

AI Technical Summary

Problems solved by technology

[0009] The second aspect of the embodiment of the present invention provides a welding tool for laser processing of a bellows, including: a fixed plate, an upper fixed sleeve, a movable support rod, an upper pressure plate and an air pipe, which solves the problem of the existing ultra-thin metal plate laser welding process It is not easy to clamp and the resulting defects are prone to non-welding, welding leakage and so on

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