Metal workpiece processing method embedded with preform

Abstract

The invention belongs to the technical field of 3D printing and relates to a metal workpiece processing method embedded with a preform. The method includes the following steps: firstly, a model of theworkpiece is designed, and a proper internal pipe is designed; then the model is divided into a preform area and a printing area, and the preform is prepared by traditional technology. 3D printing isadopted to process a pre-printing area of the target, and a post-printing area is processed after the perform is embedded; at last, the workpiece with a complex inner pipe and / or a complex local areais obtained by mechanical processing and surface treatment. The invention adopts the traditional processing technology to preset the internal pipeline in advance, thus avoiding the problems of blockage and cracking of the internal pipeline, etc. The local complex area of the mould is prepared by the traditional machining technology through the way of preform, which not only ensures the manufacturing precision of the mould, but also optimizes the performance of the local area. In addition, the 3D printing method of the invention has a wide range and good adaptability. The manufacturing cost can be effectively reduced and the production efficiency can be improved by partition manufacturing.

Description

technical field [0001] The invention belongs to the technical field related to 3D printing, and more specifically relates to a method for processing metal workpieces embedded in prefabricated parts. Background technique [0002] The traditional mold cooling water channel is mainly manufactured by machining, and the internal network of straight pipes is produced by cross-drilling. However, the shape of this water channel network is quite limited. When the shape of the part is complex, the part will be deformed due to poor cooling effect. Big. The shape of the cooling water channel changes with the shape of the part, which can well solve the problem of inconsistent distance between the cooling water channel and the surface of the mold cavity, so that the parts can be cooled evenly and the cooling efficiency is higher. At present, 3D printing technology is mainly used to prepare such workpieces with complex internal pipelines, such as molds with conformal cooling channels or r...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a metal workpiece processing method embedded in prefabricated parts, wherein by combining traditional processing technology with 3D printing technology, traditional processing technology is used to manufacture high dimensional accuracy and shape Complicated internal pipelines and local areas, combined with 3D printing technology to produce shaped workpieces, can effectively solve the problems of internal pipeline blockage, cracking, and low dimensional accuracy in complex local areas; in particular, compared with existing technologies, using The invention can extend the existing laser selective melting 3D printing technology to the arc fuse additive manufacturing technology, which can improve the printing efficiency while ensuring the manufacturing accuracy, reduce the printing cost, and expand the selection range of printing materials, so it is especially suitable for Manufacture workpieces with complex internal piping and / or complex localized areas

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