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Effect of Coaxial Lapping of Cast-iron Piston Rings on Ring Performance

Sidney J. ShamesEugene S. MachlinJohn G. Wilson

出版	National Advisory Committee for Aeronautics, 1944
URL	http://books.google.com.hk/books?id=hoTrPgAACAAJ&hl=&source=gbs_api

註釋

The results show that coaxial lapping with loose abrasive reduced both wear and scuffing. The difference was sufficiently marked to warrant investigating similar finishes produced mechanically. Surface-finish measurements showed that a change is produced in the root-mean-square profile height, maximum profile height, ridge-roughness number, and scratch pitch of the ring-surface profile as a result of coaxial lapping. The beneficial effect of these changes on ring performance may be accounted for by theory.