PROCESSING PARAMETERS STUDY OF CLOSED-LOOP LASER SOLID FORMING
To improve the accuracy and response time of closed-loop control of laser solid forming (LSF) process, it is important to master the effects of processing parameters on the deposition dimensions and mechanical parameters. In this paper, the influences of processing parameters, such as laser power, traverse speed, laser spot diameter, powder feeding rate, shielding gas flow rate on the deposition dimension parameters were investigated. It is found that the deposition height is mainly affected by the mass input of molten pool, namely, powder feeding rate and traverse velocity, especially the powder feeding rate. And the deposition width is mainly affected by the energy input such as, spot diameter, traverse speed and the energy density, among which the spot diameter and traverse speed are of greater influence. A series of transfer functions were built to quantitatively correlate the dependence of deposition layer dimension parameters on the processing parameters. The transfer function model shows a good agreement with the experimental results.
Jun Yu Hua Tan Jing Chen Xin Lin Weidong Huang
State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an, Shanxi 710072, China
国际会议
第三届太平洋国际激光与光学应用会议(PICALO 2008)
北京
英文
436-441
2008-04-16（万方平台首次上网日期，不代表论文的发表时间）