复杂薄壁金属零件的快速制造技术

本研究以真空差压铸造技术为基础，结合选择性激光烧结（SLS）快速原型技术和陶瓷壳型精密铸造技术，开发了一种从计算机三维模型到金属零件的快速制造工艺－快速精确铸造工艺，可以实现复杂薄壁铝合金零件的快速成形。本文着重描述了由SLS塑料原型快速制取陶瓷型壳和真空差压精确铸造技术的工艺特点，解决了新产品开发中金属零件快速制造的关键问题，为快速成形技术在铸造中的应用开辟了一个新领域。

A Rapid Manufacturing Technique for Complex Metal Parts with Thin Wall

Based on the rapid precision shaping technology by VDPC (Vacuum Differential Pressure Casting) combined with the RP (Rapid Prototyping) technology by SLS (Selective Laser Sintering) and the ceramic shell mold precision casting technology, a rapid manufacturing method of the metal parts named "Rapid Precision Casting (RPC)" process from a computer three dimension solid model to the metal part was investigated. The main advantage of this process was its ability to manufacture the quality and complex Al-alloy metal parts with thinwall. The focal points described in this paper are the technical characters of this process including the rapid making technology of the ceramic shell mold using a SLS plastic prototype and the RPC technology by VDPC. So the key problems for rapid manufacturing the metal parts in the process to develop new products have been solved, and this technology has opened up a new field for applying the RP technology in the foundry industry.