摘要
Abstract
ANSYS simulation software was used to analyze the nanosecond laser cladding of cobalt-based materials on the surface of high-speed steel.The relationship between laser process parameters and cladding layer temperature was discussed to obtain the process rules of nanosecond laser cladding of cobalt-based materials and determine the key processing parameter range,thereby providing data references for actual cladding experiments.According to the simulation analysis results,when the laser power was lower than 21 W,the substrate heat accumulation was insufficient to reach the melting point,and the cobalt-based material could not be completely clad.When the laser power reached more than 27 W,the substrate temperature was overheated,which would cause excessive melting of the substrate and result in poor cladding effects.When the laser scanning speed exceeded 6 mm/s,the substrate temperature became insufficient,preventing the formation of a molten pool.Conversely,when the scanning speed was less than 4 mm/s,the substrate temperature was overheated.Consequently,the experimental parameter range was selected as follows:laser power 21～27 W and laser scanning speed 4～6 mm/s.关键词
高速钢/激光熔覆/仿真模拟/钴基材料/高斯热源/ANSYSKey words
high-speed steel/laser cladding/simulation modeling/cobalt based materials/Gauss heat source/ANSYS分类
金属材料
