Electrode component for ultra-high-performance projection lamp and manufacturing method thereof

Abstract

The invention relates to an electrode component for an ultra-high-performance projection lamp and a manufacturing method of the electrode component. The electrode component is formed by a welding electrode and a molybdenum plate. The electrode and the molybdenum plate are connected through laser welding, a flat tungsten rod is arranged at the tail end of the electrode, the molybdenum plate is fixed through a molybdenum plate clamp, the tungsten rod at the tail end of the electrode is fixed through a tungsten rod jig, then, laser generated by a laser generator is output through a laser emergent head, and the electrode is in welding connection with the molybdenum plate. Compared with the prior art, the problem that laser welding cannot be carried out on a high-power electrode is solved, the laser energy is controlled to be stable, flattened treatment is carried out on the surface of the tungsten rod, the welding area is added, it is ensured that the molybdenum plate cannot be prone to being punched, the product welding consistency is good, and the quality is ensured.

Description

technical field [0001] The invention relates to an electrode assembly and a manufacturing method thereof, in particular to an electrode assembly for an ultra-high performance projection lamp and a manufacturing method thereof. Background technique [0002] The strength of ultra-high-performance projection lamp welding has always been one of the problems that plague lighting electrode manufacturers. The existing technology uses discharge welding of upper and lower tungsten electrodes, that is, the thick tungsten rod and molybdenum sheet are pressed between the two electrodes, and a current is applied. It is a method of heating it to a molten or plastic state by using the resistance heating effect generated by the current flowing through the contact surface of the workpiece and the adjacent area to form a metal bond. Due to the thicker diameter of the tungsten rod, the current cannot flow evenly through the two contact surfaces, which makes it difficult to guarantee the qualit...

AI Technical Summary

Problems solved by technology

Due to the thicker diameter of the tungsten rod, the current cannot flow evenly through the two contact surfaces, which makes it difficult to guarantee the quality of the welded product, and the consistency of the welding strength is very poor. The specific disadvantages are as follows:

[0003] (1) Welding tungsten rod with a diameter of 0.8mm or more and using resistance welding cannot ensure that the weldment is completely melted, resulting in very 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 rod is extremely thick compared to the molybdenum sheet, and the molybdenum sheet material is extremely thin (0.02mm), 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) Manual welding of products, long welding time for a single product, and low labor efficiency

The welding size requirements are high, and the quality of welding cannot be guaranteed by using simple fixtures

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