分层实体制造中金属分层板结合的新方法  

Connect Technique of Laminated Object Manufacturing Using Metallic Materials as Modeling Materials

作　　者：易树平[1] 哈津[1] 林利红[1] 张津[2] 

机构地区：[1]重庆大学机械工程学院,重庆400044 [2]重庆工学院材料工程系,400050

出　　处：《重庆大学学报（自然科学版）》2002年第2期1-3,7,共4页Journal of Chongqing University

基　　金：国家自然科学基金 ( 5 9875 0 88);重庆市应用基础项目研究 ( 2 0 0 0 -60 62 )资助项目

摘　　要：针对金属造型材料分层快速制造方法中存在的问题 ,提出用真空固态压力热扩散焊连接金属分层板的新方法。实验研究表明 :焊接后堆积成形方向上零件尺寸变化较小 ,且为系统误差 ,其数值仅为 1% ;结合区域原子发生了明显的扩散 ,新的晶粒组织已经形成 ;焊缝结合强度在 10 0Mpa以上 ,显微硬度与母材一致。To solve some key problems existed in the manufacturing of metallic functional part via Laminated Object Manufacturing (LOM), a new technique using vacuum solid-state pressure diffusion weld technique to connect the metallic slice sheets is presented in this paper. The following conclusions can be draw from the experiments introduced specially: the size in the stack direction shrink at the rate of less than 1% and the shrinking is owed to regularly error, the atom-diffusion between two combined interface occurred clearly and new crystallites shaped meanwhile, shearing intension of well connected diffusion section is more than 100 MPa and micro hardness of well-knit portion is the same to matrix's. It can be proved from the result above that the vacuum solid-state pressure diffusion technique weld is a perfect technique for connecting metallic slice sheets used in the manufacturing of metallic functional part via LOM.

关 键 词：金属分层板 分层实体制造 金属造型材料 真空固态压力热扩散焊 连接工艺 

分 类 号：TG439.6[金属学及工艺—焊接]