Production method of electrode component for automotive metal halide lamp

Abstract

The invention relates to a production method of an electrode component for an automotive metal halide lamp. A tungsten wire tool is used for clamping a tungsten wire to be processed; a molybdenum chip fixture is used for fixing a molybdenum chip to be processed; and after the position, to be processed, of the tungsten wire is precisely controlled, a laser generated by a laser generator is output through a laser emitting head to perform the welding connection for the tungsten wire and the molybdenum chip. Compared with the prior art, a product, produced by the production method, has the advantages of good welding consistency, quality guarantee and large improvement of welding efficiency.

Description

technical field [0001] The invention relates to a method for manufacturing an electrode assembly, in particular to a method for manufacturing an electrode assembly used in an automobile metal halide lamp. Background technique [0002] The welding of tungsten wire electrodes in automotive metal halide lamps has always been traditional electrode resistance welding. This technology adopts discharge welding of upper and lower tungsten electrodes, that is, the tungsten wire and molybdenum sheet are pressed between the two electrodes, and current is applied to utilize the current flow. A method in which a metal bond is formed by heating it to a molten or plastic state through the resistive heating effect produced by the contact surface of the workpiece and the adjacent area. Due to the influence of various factors, it is difficult to guarantee the quality of the welded product, and the consistency of the welding strength is very poor, and there are the following disadvantages: ...

AI Technical Summary

Problems solved by technology

Due to the influence of various factors, it is difficult to guarantee the quality of the welded product, and the consistency of the welding strength is very poor, and there are the following disadvantages:

[0003] (1) The contact surface of the welding electrode is large, and the tungsten wire is extremely thin (0.25mm in diameter), so that the position of the weldment cannot be guaranteed, resulting in unstable welding strength

[0004] (2) The surface of the electrode is uneven due to discharge, which requires a lot of manual grinding work

And useless electrodes will cause pollution after being discarded

[0005] (3) After the subsequent hydrogen burning treatment, the solder joints will fall off

[0006] (4) During welding, since the tungsten wire is extremely thin and the molybdenum sheet material is extremely thin, the extrusion of the upper and lower electrodes will cause the deformation of the product

[0007] (5) Changes in welding energy, resulting in brittle products and over-welding

[0008] (6) The welding time of a single product is long and the labor efficiency is low

Because the tungsten wire electrode is extremely thin, the molybdenum sheet material is extremely thin, and the welding size requirements are high, the quality of welding cannot be guaranteed by using simple fixtures.

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