盐/PS混合粉末激光烧结成型实验研究

Experimental Study on Laser Sintering and Forming of Salt / PS Mixed Powder

本文针对盐雕工艺品个性化需求及现有模铸方法成本高、周期长等弊端,提出激光烧结快速成型盐雕的工艺方法,对盐/PS混合粉末进行了选择性激光烧结工艺实验研究,给出了盐/PS粉末组分及工艺参数对烧结成型收缩率的影响规律,微观形态观察表明,激光烧结使得PS粉末熔化实现对盐粉颗粒的包裹并粘结成型,并给出了能够实现良好烧结成型的材料配比,为盐雕工艺品个性化制造提供了一条可行的工艺途径。

Aiming at meeting salt carving crafts’ personalized demands and avoiding disadvantages of long periodic and high-cost die casting methods, this paper proposed a process for fabricating the salt carving crafts by Selective La_ser Sintering（ SLS） rapid prototyping, and carried out SLS process experimental studies on salt/PS mixed powder, then the influencing laws of salt/PS powder’s composition and process parameters on the sintering shrinkage were given. The observation of microstructure morphology showed that the salt particles were packed with melting PS powder after sin_tered by laser scanning and the bond of mixed powder could be achieved. Then the materials’ ratio of Salt powder to PS powder that could realize sintering well was given and a practicable process for personalized manufacture of salt carving crafts was suggested.