Investigation for Hardening of Cast Iron using Low-Power Fiber Laser
Investigation for Hardening of Cast Iron using Low-Power Fiber Laser
复制标题
使用低功率光纤激光器对铸铁进行硬化研究
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
A. Skoczylas
中科院分区：
文献类型：
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作者：
K. Zaleski;A. Skoczylas
摘要-工业的新发展引发了对各种繁琐应用的新工艺/来源的需求。传统和非常规的加工工艺都在这些最新趋势的背景下相应地更新。激光表面硬化（非常规加工工艺）、固态相变硬化也不例外。许多研究人员详细讨论了在这一过程中观察到的重要性和含义。通常用于各种汽车零件的铸铁由于滑动接触而受到磨损，因此需要对配合表面进行选择性硬化。为此，对铸铁激光表面硬化过程中的固相转变进行了实验研究。在这种情况下，连续波（cw）和脉冲模式下功率为100w的光纤激光器与光束积分器一起使用。工艺参数为；改变光束功率、光束直径、行进速度和脉冲时间，研究它们对热影响区的几何形状、尺寸和硬度的影响。
42 Abstract— New developments in industry initiate the need to identify newer process/ source for carrying out various tedious applications. Both conventional and non-conventional machining processes are accordingly updating in context with these recent trends. Laser surface hardening (non-conventional machining process), a solid state phase transformation hardening is neither an exception to this. Various researchers have elaborately discussed the importance and implications observed during this process. Cast iron, normally used in various automobile parts is subjected to wear due to sliding contact and hence the selective hardening of mating surface needs to be carried out. Hence, an experimental study of solid-state phase transformations during the laser surface hardening of cast iron is conducted. In this, a fiber laser of power 100 W in continuous-wave (cw) and pulsed mode is used in conjunction with a beam integrator. The process parameters viz; beam power, beam diameter, travel speed and pulse time are varied to study their effects on geometry, dimensions and hardness of heat affected zone.