发明名称 |
Method of manufacturing a side rail of a combined oil ring |
摘要 |
Each side rail of a combined oil ring, which includes a spacer-expander and two side rails, has an ion nitriding treatment layer on an outer peripheral surface of the rail. The inner peripheral surface of each rail may either be a bare surface or have either a soft surface treatment or a hard chrome plating. The upper and lower surfaces of the rail may either be a bare surface or have a soft surface treatment. The method comprises coiling a strip to form a coil, placing the coil on a jig so that only the outer peripheral surface is exposed to the ion nitriding and then cutting the coil to form the individual rails with a gap.
|
申请公布号 |
US5469616(A) |
申请公布日期 |
1995.11.28 |
申请号 |
US19940189723 |
申请日期 |
1994.01.31 |
申请人 |
TEIKOKU PISTON RING CO., LTD. |
发明人 |
MIYAZAKI, SATOMICHI;HARAYAMA, AKIRA;KAZAMA, NOBUYUKI;ISHIDA, MASAO |
分类号 |
F16J9/06;F16J9/26;(IPC1-7):B23P15/00 |
主分类号 |
F16J9/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|