Laser cladding device for inclined frustum-shaped valve plate sealing faces of large valves

Abstract

The invention discloses a special clamp for inclined frustum-shaped valve plates, a laser cladding device and a corresponding laser cladding method, and belongs to the laser cladding field of semiconductor laser units. According toclamps for the valve plates in the prior art, in the laser cladding process, cladding is not uniform due to the inclined frustum shape of the valve plates, and some positions cannot be subjected to cladding. The special clamp comprises a side wall and a bottom surface, wherein the side wall is cylindrical, the bottom surface is oval, and an angle is formed between the bottom surface and the side wall and is equal to the included angle between the central axis of the inclined frustum shape of the valve plates and the plane normal of the valve plates; for cladding of the inclined frustum-shaped valve plates, powder accumulation is more uniform, the cladding surface is horizontal, the whole inclined frustum-shaped surface can be subjected to cladding, and cladding is more uniform.

Description

technical field [0001] The invention belongs to the field of laser cladding of semiconductor lasers, and more specifically relates to laser cladding of a sealing surface of a truncated cone valve plate of a large valve. Background technique [0002] The pump and valve industry is an important part of my country's equipment manufacturing industry, especially the leading industry with traditional characteristics in Wenzhou. The development of the pump and valve industry is of great significance for promoting the development of Wenzhou's industrial economy, improving the level of my country's equipment manufacturing, and promoting the development of industrial and regional economies. [0003] 1. The pump and valve industry is an important basic industry in my country's manufacturing industry [0004] In recent years, only Wenzhou's pump and valve industry has reached an annual output of 30 billion yuan, and has grown at a rate of 25%. It is the largest pump and valve production...

AI Technical Summary

Problems solved by technology

[0005] 2. The traditional surface strengthening process of pump valve sealing surface is facing challenges

The current cladding technology regards the valve plate as an ordinary cylindrical surface, and there are several problems: (1) When using ordinary fixtures, the edge of the valve plate will not be completely horizontal, resulting in the powder not being able to accumulate on the valve plate normally, affecting the fusion process. (2) During the rotation of the worktable, the ordinary cylindrical surface can maintain a stable position, while the conical table surface will produce a certain displacement, which will cause the laser beam to deviate from the cladding area, making the edge of the valve plate Partial cladding and partial non-cladding are formed; (3) Due to the frustum shape of the cladding surface of the valve plate, the thickness of different areas on the edge is different. If a rectangular spot is used for cladding, the center of the laser beam is shifted to a thinner area, it will burn the area

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