THEORETICAL AND EXPERIMENTAL RESEARCH OF TEMPERATURE FIELD OF COAXIAL POWDER FLOW IN LASER CLADDING
There is physical processing of laser energy absorption and attenuation in coaxial powder flow. Theoretical models of concentration and temperature fields for carrying gas/powder two phase flow from coaxial nozzle have been presented from Beer-Lambert law. Computer simulation of temperature field in powder flow has been achieved. Some effects of laser cladding parameters (laser power, powder mass flow rate, and particle size and gas flow volume) on temperature distribution have been discussed. Temperature field in powder flow has been measured by CCD camera. It is shown from both computer and CCD that temperature in centre axial line of powder flow will be significantly increased from outlet of nozzle to part surface. It is available to laser cladding.
Laser cladding Temperature field Computer simulation CCD camera Powder flow Beer-Lambert law
Xichen Yang Zhe Dong Li Li
Laser Processing Center, Tianjin Polytechnic University 63Chenglinzhuang Rd., Hedong District, Tianj Laser Processing Center, Tianjin Polytechnic University63Chenglinzhuang Rd., Hedong District, Tianji
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
351-356
2008-04-16（万方平台首次上网日期，不代表论文的发表时间）