Precision lost wax casting technology based on selective laser powder sintering 3D printing

Abstract

The invention discloses a precision lost wax casting technology based on selective laser powder sintering 3D printing. The precision lost wax casting technology comprises the following steps that S101, a target part is subjected to optimal design of a CAD casting technology; S102, selective laser powder sintering 3D printing forming is carried out; and S103, silica sol / water glass precision investment casting is carried out. A wax mold of the part can be fast manufactured without molds, the metal part is fast manufactured, fast manufacturing of complex parts can be achieved, and integration, automation and fastness in the precision casting technology process can be achieved; and the development period of new products are greatly shortened, development cost is reduced, and the precision lost wax casting technology is especially suitable for production of single small-batch complex castings and trial-manufacturing of new products.

Description

technical field [0001] The invention relates to a casting process, in particular to a precision wax pattern casting process based on selective laser powder sintering 3D printing. Background technique [0002] 3D printing technology is based on the principle of layer-by-layer accumulation of discrete materials. According to the three-dimensional CAD model of the product, it is a digital manufacturing technology that quickly "prints" product prototypes or parts. It integrates computer software, materials, machinery, control, network information, etc. Systematic and comprehensive technology of subject knowledge. 3D printing changes "subtractive material" processing into "three-dimensional printing", turns three-dimensional entities into two-dimensional planes, reduces manufacturing complexity, and frees designers from the constraints of traditional craftsmanship and manufacturing resources, focusing on product form creativity and functional innovation. Under the concept of "de...

AI Technical Summary

Problems solved by technology

However, the traditional 3D printing-based precision casting process still has many shortcomings. For example, for different types of prototypes, it is necessary to add supports of different specifications, which increases the difficulty of printing and the prototypes are easy to deform, which affects casting efficiency and wastes materials.

The conventional wax pouring system needs to manually set the wax stick on the resin prototype of the finished part, which is time-consuming and laborious, and is affected by the pouring system and manual process, it is difficult to ensure the quality and stability of the cast metal parts, which increases the complexity of the process

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