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为提高排气阀密封面耐燃气腐蚀、延长气阀的使用寿命,我们进行了等离子喷焊技术的研究。本文重点叙述各种粉末合金材料的选择和等离子喷焊工艺的研究。业已证实,该方法工艺过程实现程序控制稳定可靠、质量优良,为排气阀密封面的制造提供了又一重要途径。
To improve the exhaust valve sealing surface resistant to gas corrosion and extend the service life of the valve, we conducted a plasma spray welding technology. This article focuses on the selection of various powder alloy materials and plasma spray welding process. It has been confirmed that the process of the method is stable and reliable in process control and of good quality and provides another important way for the manufacture of the sealing surface of the exhaust valve.