| 摘要:针对某型柴油机运行中发生的拉缸故障的分析显示:国产活塞环工作面铬陶瓷复合镀层中陶瓷颗粒大小、含量及表面粗糙度等参数不合理是造成拉缸故障的主要原因。对上述镀层参数开展了优化匹配研究，并进行平台试验及柴油机试验验证。平台试验结果显示:优化后的活塞环其抗拉缸性能显著提高；柴油机运行200 h试验结果显示:活塞环无明显磨损，气缸套珩磨网纹清晰、完整。表明:优化后的活塞环镀层参数匹配合理，优化后的活塞环可满足该型柴油机的使用要求。 |
| 关键词: 活塞环 拉缸 铬陶瓷复合镀层 试验 |
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| Parameters Matching Research of the Chromium Ceramics Composite Coatingof Piston Rings |
| Na Ren,Hu Junqiang,Yin Xiao,Wang Zhiwei |
| Shanghai Marine Diesel Engine Research Institute, Shanghai 201108;CRRC Qishuyan Institute Co., Ltd., Jiangsu Changzhou 213011 |
| Abstract:A type of diesel engine met with scuffing during operation. To deal with this problem, research was carried out which showed that the main reasons of this failure was unreasonable parameters such as the size, content of the ceramic particles and its surface roughness of the chromium ceramic composite coating on the working surface of the home-made piston ring. Thus optimal matching, as well as bench test and engine test were carried out to study the coating parameters. Bench test showed that the anti-scuffing capability of the optimized piston ring had been remarkably improved. The 200 h engine test showed that there was no obvious wearing on the piston ring and the honing reticular structure was clear and complete. It is verified that after optimization, the parameter matching of the piston ring coating is reasonable and the piston ring could satisfy the application requirements of this type of diesel engine. |
| Key words: piston ring scuffing chromium ceramics composite coating test |
