一种液压缸缸筒QPQ缺陷分析及应对措施  

QPQ Defect Analysis and Countermeasures of a Hydraulic Cylinder Barrel

作　　者：李文英 王培 丁大江 路世奇 蒋爱民[2] LI Wen-ying;WANG Pei;DING Da-jiang;LU Shi-qi;JIANG Ai-min(Beijing Long March Tianmin High-tech Co.,Ltd.,Beijing 100023,China;Beijing Institute of Space Launch Technology,Beijing 100076,China)

机构地区：[1]北京长征天民高科技有限公司,北京100023 [2]北京航天发射技术研究所,北京100076

出　　处：《液压气动与密封》2022年第11期107-112,共6页Hydraulics Pneumatics & Seals

摘　　要：油气弹簧产品将轮组和车架弹性的连接起来,是特种车辆底盘的重要组成部分,主要传递车轮和车架之间的垂向力。油气弹簧采用气体作为弹性介质,以油液来传递压力,能够缓和、衰减外力引起的车架振动,使车辆处于良好的工作环境中。油气弹簧缸筒QPQ处理,在零件表面形成一层致密的氮化层,使零件表面拥有良好的耐磨性能、耐腐蚀性、耐疲劳性。在实际产品中,QPQ缺陷时有发生,造成产品渗漏,寿命降低。Hydro pneumatic spring products connect the wheel set and the frame elastically.It is an important part of the chassis of special vehicles and mainly transmits the vertical force between the wheel and the frame.The hydro pneumatic spring uses gas as the elastic medium and uses oil to transmit pressure,which can mitigate and attenuate the frame vibration caused by external forces and make the vehicle in a good working environment.The oil-gas spring cylinder barrel is QPQ treated to form a dense nitriding layer on the surface of the part,so that the surface of the part has good wear resistance,corrosion resistance and fatigue resistance.In actual products,QPQ defects occur from time to time,resulting in product leakage and reduced service life.

关 键 词：油气弹簧 缸筒QPQ缺陷 降低寿命 

分 类 号：TH137[机械工程—机械制造及自动化]