The experimental result shows that the depth of hardened zone and smoothness of surface can be controlled conveniently by varying the power output beam diameter and scanning rate of laser light.
试验表明：通过调节激光器的输出功率、光斑直径和扫描速度可以方便地控制熔化层深度和表面平整度。
Surface roughness of hardened zone of the ball head pin has been improved on by the use of inert gas …
在感应加热过程中采用惰性气体和改进的工装夹具改善了淬火区的表面粗糙度。
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