Synchronous air cooling device for gas protective additive

Abstract

The invention provides a synchronous air cooling device for a gas protective additive. The synchronous air cooling device comprises an inner cover body and an outer cover body, wherein the inner coverbody is installed on a welding gun in a sleeving mode, an annular sealing plate is installed at the bottom end of the inner cover body, the annular sealing plate is connected with the inner wall andthe outer wall of the inner cover body to form a first accommodating chamber, a protective gas inlet is formed in the top end of the inner cover body and used for injecting protective gas, and a plurality of fine holes are formed in the annular sealing plate and used for allowing the protective gas to flow out; and the outer cover body is installed on the outer wall of the inner cover body in a sleeving manner, a second accommodating chamber is formed by the outer cover body and the outer wall of the inner cover body, a compressed gas inlet is formed in the top end of the outer cover body andused for injecting compressed gas, and a compressed gas outlet is formed in the bottom end of the outer cover body and used for allowing the compressed gas to flow out. According to the synchronous air cooling device for the gas protective additive, the problems that the metal welding cooling speed is low, synchronous cooling is difficult and strength and grain size grade are obviously reduced inthe prior art are solved.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a synchronous air-cooling device for gas shielded additives. Background technique [0002] Arc metal additive manufacturing is a manufacturing technology based on arc surfacing, specifically the process of metal melting and resolidification at the arc welding position. Some metals are more sensitive to the cooling rate of this process. If the high-speed cooling in this process can be realized, a solid solution strengthening can be completed in the surfacing process, and the grain can be refined at the same time. In the traditional gas-shielded additive process, the protection area is often formed by continuously supplying the shielding gas through the welding torch head, thereby providing protection for the molten pool. However, it is necessary to keep the state in one area stable during the manufacturing process, and the surfacing surface cannot be synchronized. ...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention proposes a synchronous air-cooling device for gas-protected material addition, which solves the problems of slow metal welding cooling speed, difficult synchronous cooling, obvious decline in strength and grain size grades in the prior art

Images