内燃机活塞环的等离子渗氮  

Plasma Nitriding for the Diesel Piston Ring

作　　者：江虹 周松流 樊波平 

机构地区：[1]武汉市等离子体技术研究所,湖北武汉430012 [2]仪征双环活塞环有限公司,江苏仪征211400

出　　处：《热处理》2005年第1期39-41,共3页Heat Treatment

摘　　要：阐述了活塞环等离子渗氮设备、工艺及渗氮层的检测方法。活塞环经过等离子渗氮处理,提高了活塞环的表面硬度和耐磨性。通过磨损试验发现,经等离子渗氮的试样摩擦力矩小,即摩擦系数小,减摩性好。同时磨合接触面的温度低,有利于活塞环在缸套中高速运动时建立润滑油膜,提高了活塞环的抗咬合性,延长了活塞环的使用寿命。This article has elaborated the equipment, process of plasma nitriding for piston ring and the examinationway of nitrided layer. The plasma nitriding will improve on surface hardness and wear resistance of the pistonring. The wear test shows that the plasma nitrided samples are provided with low friction moment or friction coefficientand better antifrictionability. Meanwhile, the temperature on rubbing surface is low, thus beneficial to producinglubricating film when the piston ring moves at high speed in the cylinder, and as a result, biting resistance of thepiston ring will be improved on, with its service life being lengthened.

关 键 词：渗氮层 等离子 抗咬合性 表面硬度 减摩 活塞环 磨损试验 内燃机 润滑油膜 缸套 

分 类 号：TG156[金属学及工艺—热处理] TK403[金属学及工艺—金属学]