Simulation Analysis of the Effects of Marangony Flow on Laser Cladding

• Main Authors: Kung yuan-cheng, 龔袁正
• Other Authors: Chang Chin-Lung
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/09695091494036383073

碩士 === 國立屏東科技大學 === 車輛工程系碩士班 === 94 === The purpose of this thesis is to simulate the effects of marangony flow on the laser cladding processing using finite element method based on three-dimensional model. In the laser cladding processing, the surface tension coefficient of melting metal could influence the thickness and dilution of the metal clad which is leading to the variation of the mechanical properties. Based on the FIDAP software package and processing parameters, the temperature field, flow field of melting metal and thickness of metal clad were investigated to analyze the effects of the marangony flow on the laser cladding processing. The results show that the positive surface tension coefficient will decrease the clad thickness and increase the dilution. On the contrary, the negative surface tension coefficient will lead to a thinner clad and a lower dilution. The process quality will be stronger influenced. Hence, the present results can provide an important data to industry demands and improve the quality of the laser cladding processing.