Entirety quick manufacture method of hot isostatic pressing metal wrapps

Abstract

The invention discloses an integral rapid manufacturing method of a hot isostatic pressing metal sheath, comprising the steps: (1) a CAD three-dimensional model of the metal sheath is designed by adopting three-dimensional molding software, and is then processed by slicing software and saved as an STL file, and the data information of the STL file is transmitted to an SLM rapid forming machine; (2) a forming chamber is vacuumized; (3) a metal powder layer is spread on a work platform flatly; (4) a semiconductor pumping YAG laser or a fiber laser is adopted to scan the metal powder positioned at the boundary of the slice layer, and the powder material at the boundary is melted; and (5) the step (3) and the step (4) are repeated until the compact sheath is manufactured. Powder inlet holes can be reserved on the sheath when designing the three-dimensional model of the sheath, so as to facilitate the subsequent processes such as powder filling, compaction by vibration, vacuum pumping and encapsulation. The sheath is compact and has a controllable shape, and can form parts with any complex shapes and structures, and can realize the high utilization rate of material.

Description

technical field [0001] The invention belongs to the field of parts forming and manufacturing, and in particular relates to an overall rapid manufacturing method of a hot isostatic pressing metal sheath. Background technique [0002] Hot isostatic pressing (HIP) is a process that uses high temperature and high pressure loads to realize the preparation of powder materials and the forming of parts. In particular, this technology can be used to realize the overall near net shape of precious metal powder parts such as ceramics, hard alloys, composite materials, titanium and nickel. The mechanical properties of the parts are equivalent to forgings of the same material, and the dimensional accuracy can reach 0.1mm. The utilization rate exceeds 90%, and there is almost no material waste. In this process, the forming material is in powder state, and the high-temperature and high-pressure medium is gas. In order to achieve the pressing effect of high temperature and high pressure ga...

AI Technical Summary

Problems solved by technology

However, this kind of process only uses the rapid prototyping method to manufacture complex local structures in the sheath, and then splicing each local structure into a whole, and after hot isostatic pressing, the sheath needs to be removed by acid etching and other methods. The process is cumbersome and the operation is difficult. larger

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