金属零件阻焊式双工位叠层快速制造技术

针对金属材料分层快速制造方法中存在的层间粘结强度低和废料取出困难的问题,提出了电阻焊双工位直接快速制造金属零件的技术。系统地研究了该技术的基本原理和实现方案,以厚度为0.1mm的302不锈钢薄板为造型材料,进行了金属零件的分层快速制造。所制造的快速注塑模具实例层与层之间形成了扩散焊接效果,达到了完全冶金结合,结合强度超过600MPa;用该模具注塑的塑件表面尺寸精度和光洁度均达到了要求。实验表明,阻焊式双工位叠层制造方法是实现高强度金属零件快速制造的有效途径。

Rapid Laminated Manufacturing for Metal Parts Based on Resistance Welding Double-staged LOM

The adhesive strength between the metallic sheets and the way to remove the waste are the key problems of the laminated object manufacturing(LOM) for metallic functional parts.To solve these problems,a novel resistance welding double-staged LOM was presented with its basic principles and implementation approach introduced.With 302 stainless steel sheets of 0.1 mm in thickness as the model material,the rapid laminated manufacturing for metal parts was conducted.As a result the plastic rapid injection mold shows its diffusion welding effect between sheets up to complete combination and its strength is more than 600 MPa.The surface of plastic product injected according to the mold reaches the standard in dimensional accuracy and surface finish.The experiment has proved that the resistance welding double-staged LOM is an effective method of the direct rapid manufacturing for metal parts of high strength.