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柴油机气门座孔热处理工艺研究

Internal Combustion Engines(2013)

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Abstract
柴油机采用无气门座圈结构后,为实现气门-气门座孔摩擦副硬度匹配合理,采用激光表面淬火工艺,通过对激光功率、扫描速度、保护气量等参数的合理调整。最终使气门座孔锥面硬度满足了气门-气门座孔摩擦副要求。
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Key words
valve hole,hardness,laser quenching
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