第40卷(2018)第2期
第二十届全国大功率柴油机会议论文专栏
柴油机 Diesel Engine
Vol. 40(2018) No.2
活塞环铬陶瓷复合镀层参数匹配优化研究
娜仁"，胡军强"，殷筱"，王志伟”
（1.七一一研究所，上海201108；2.戚墅堰机车车辆工艺研究所有限公司，江苏常州213011）
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200h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：试验中图分类号：TK423.3*3;TK426
文献标识码：A
文章编号：1001-4357(2018)02-0020-05
Parameters Matching Research of the Chromium Ceramics Composite Coating
ofPistonRings
Na Ren',Hu Junqiang',Yin Xiao',Wang Zhiwei”
(1.Shanghai Marine Diesel Engine Research Institute ,Shanghai 201108; 2. 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 cleal 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
0引言
活塞环-气缸套是柴油机的核心零部件，受周期性交变热负荷和机械负荷作用，常在高温、高载、高速和润滑不良的情况下工作，是整机摩擦损失的主要来源，也是较容易发生故障的零部件。其设计、制造水平直接关系到整机的功率密度、可靠性和经济性等主要指标，因此一直是柴油机设计、
制造和试验研究关注的重点。
为提高活塞环的可靠性和使用寿命，对其工作面做强化处理。传统镀铬处理因其镀层脆性大，在热和机械循环负荷作用下容易开裂脱落，加剧缸套磨损：而铬陶瓷复合镀层初期磨合时间短"，耐磨性、耐腐蚀性和高温承载性能优良，从而使匹配副的可靠性及使用寿命大为提高，已逐渐取代镀铬成为活塞环表面处理的新趋势。
收稿日期：2017-10-22
作者简介：娜仁（1991-），女，助理工程师，主要研究方向为案油机气缸单元零部件结构设计，naren@esie711.com。