等离子熔射快速制模中皮膜形成过程的模拟  

The Numerical Simulation of Coating Forming Process for Plasma Rapid Tooling

作　　者：王桂兰[1] 张海鸥[1] 樊彬[1] 陈衍祥[1] 

机构地区：[1]华中科技大学塑性成形模拟及模具技术国家重点实验室

出　　处：《华中科技大学学报（自然科学版）》2001年第8期68-70,80,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目 (5 0 0 75 0 32 ;教育部高等学校博士学科点专项基金资助项目 (2 0 0 0 48737)

摘　　要：等离子熔射快速制模法可以由快速原型或天然素材原型快速复制硬质合金模具 ,而控制等离子熔射成形工艺、保证熔射皮膜的质量是该技术的关键 .建立了包括等离子射流发生过程、粒子在射流中飞行及加热、熔射层的生长及孔隙形成三阶段的熔射皮膜生长过程的数学模型 ,进行了数值模拟计算 ,并通过实验验证了有关数学模型与模拟计算方法的正确性 .In this paper, the mathematical models have been established that include the generating of plasma, particle′s flying and heating in the jet flow, the forming of the coating with pores. And the numerical simulation is carried out. The validity of mathematical model and the numsimulation method of plasma spray are proved by the experiments. The development of the simulation software system for the plasma spray forming process is helpful for the reasonable design of the plasma spray rapid tooling processes.

关 键 词：快速制模 等离子熔射 熔射层 孔隙率 数值模拟 熔射皮膜 制模工艺 

分 类 号：TG76[金属学及工艺—刀具与模具]