摘要
针对激光熔覆成形中熔池表面温度场难以测量的问题,搭建了彩色CCD同轴测温系统。通过优化实验参数,该测温平台可获得清晰、稳定的熔池表面图像,对所拍图像进行处理和计算,可以得到熔池表面的温度场。为了验证得到的温度场是否准确,搭建了红外测温系统,通过对熔池表面不同区域进行测温,得到了与CCD测量结果基本吻合的熔池表面温度分布。两种不同的测温方式得到一致的温度场,说明此测温平台是实用、可靠的,为通过实时检测熔池表面温度进而控制熔覆成形系统打下基础。
In order to solve the problem that temperature field on the surface of molten pool is difficult to measure in laser cladding forming,this paper builds a color CCD coaxial temperature measurement system.The platform can take a clear and stable image of the molten pool through optimizing the experimental parameters,from which we can get the temperature distribution on the surface of the molten pool.To verify whether the temperature distribution obtained is reasonable and accurate,an infrared thermometer temperature measurement system was set up.According to the measurement of different areas' temperature on the surface,the temperature distribution of molten pool is basically coincident with the CCD measurement results obtained.The consistent temperature distribution from the two different temperature measurement methods shows that the temperature measurement platform is practical and reliable,which lays the foundation of controlling the cladding system by detecting the surface temperature of the molten pool in real time.
引文
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