Powder conveying device suitable for small-specification in-hole laser bead welding

Abstract

The invention discloses a powder conveying device suitable for small-specification in-hole laser bead welding, and relates to the technical field of laser bead welding. The powder conveying device comprises a chuck, an internal hole sample, a bead welding layer, a powder conveying seat, an outer sleeve, a connecting seat, a powder conveying channel, a funnel and a funnel cover. The internal hole sample is fixed to the chuck, the powder conveying seat and the connecting seat are connected through the powder conveying channel, the powder conveying seat and the internal hole sample are connectedthrough a powder outlet in the lower end of the powder conveying seat, and the funnel is externally connected with an inlet channel. The powder conveying device suitable for small-specification in-hole laser bead welding of 15 mm or below, machining efficiency is high, and tool matching is easy and convenient; and a cladding layer is high in quality and has no slag inclusion, air holes or other defects, and the problem about inner wall bead welding of a small-caliber inner hole sample can be solved.

Description

technical field [0001] The invention relates to the technical field of laser surfacing welding, in particular to a powder feeding device suitable for laser surfacing welding in small-sized holes. Background technique [0002] For the surfacing welding of the inner wall of small-diameter inner hole parts, the process is cumbersome and the product quality is uneven, so the processing cost is high, which limits the development of corresponding manufacturing enterprises. For small-diameter inner hole parts, the main welding methods currently used are MIG, MAG, non-MIG welding (TIG), and laser surfacing. Judging from the retrieved literature and data, the main process method is to extend the welding heat source into the inner hole of the small-diameter part and implement wire feeding surfacing on the inner wall. [0003] The patent "Surface Welding Method for Inner Hole Inner Wall" (patent application number: CN201610002531.3) discloses a method for surfacing inner wall of inner...

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Problems solved by technology

However, when the diameter of the inner hole is less than or equal to 15mm, this method of laser surfacing powder feeding on the inner wall that extends the powder feeding tube into the inner hole will be difficult to avoid the laser beam and the powder feeding tube because the inner hole space is too narrow. Interference, resulting in the implementation of laser surfacing in small holes

[0006] Therefore, those skilled in the art are committed to developing a powder feeding device suitable for laser surfacing welding in small-sized holes. Solve the problem of surfacing welding on the inner wall of small-diameter inner hole samples

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