微束等离子选区熔化成形系统设计

设计一种微束等离子选区熔化实验平台，利用SolidWorks软件对各零部件进行三维建模与虚拟装配，实现直角坐标系机器人结构的实验平台实物搭建.在不同工艺参数下，开展单道、单层微束等离子选区熔化实验，采用多项式回归对成形道宽度进行拟合.结果表明，成形电流、成形速度与成形宽度呈正相关分布.在多层金属熔覆实验中，对于厚度为2.40 mm的金属薄板而言，最佳参数为12.0 A的电流、 2.0 mm·s^-1的扫描速度和20%的搭接率.最终得到的多层金属成形效果较好，证实微束等离子选区熔化工艺的可行性.

Design of microbeam plasma selective melting forming system

Focusing on the new process of micro plasma selective melting, the mechanical structure of the experimental platform for micro plasma selective melting was designed. The 3D modeling and virtual assembly of various parts were carried out using SolidWorks software, and the physical construction of the experimental platform for rectangular coordinate robot structure was realized. Polynomial regression was used to fit the width of the forming channel. Single layer plasma selective melting experiments were carried out under different process parameters, and the mapping relationship between the process parameters and the width of the forming channel was established.Finally, the visual slicing software was developed using C++programming language, and the layered slicing and path planning functions of 3D models were realized.