柴油机气缸套等离子淬火技术应用

Application of Diesel Engine Cylinder Liner Plasma Quenching Technology

采用等离子淬火技术对缸孔进行淬火,结合设备主要技术参数,研究等离子淬火的原理以及工作电流、扫描速度、硬化面积比对硬化层深度、硬度、宽度的影响,利用正交试验方法,选用最佳工艺参数,进行等离子淬火试验,通过对试验检测数据的分析,验证工作电流、扫描速度、硬化面积比对等离子淬火的影响,确定最佳工艺参数为工作电流70A、扫描速度10m/min、网纹头数12。通过与普通气缸套进行磨损试验对比,得出等离子淬火技术能增加缸孔的耐磨性能的结论。

Using the plasma quenching technology to dispose the cylinder liner, with technical parameters of the equipment and orthogonal experiment method, the principle of plasma quenching, the effect of working current, scanning speed, and the influence of hardened area ratio on hardened layer depth, hardness and width are considered to select the best process parameters. The influence of working current, scanning speed and hardened area ratio is verified through the analysis of plasma quenching experiment data while the optimum technology parameters are working current 70 A, scanning speed 10 m/min, and cobwebbing number 12. Through the comparison with the wear of ordinary cylinder liners, it is concluded that the plasma quenching technology can increase the wear resistance of the cylinder liners.