1941-01-01

WEAR-RESISTANT COATINGS of Diesel Cylinder Liners 410085

THE influence of chemical surfacing upon the running-in of diesel cylinder liners is discussed in this paper.
The newly assembled diesel engine requires a run-in before being placed into service operation. Because it is difficult to lubricate the smooth, honed liner bore during the period of structural change, “scratching” or “scuffing” is imminent. The problem of scuffing during the run-in may be largely eliminated through a caustic-sulfur treatment for the honed liners before assembly.
The nature of this coating, before and after the run-in, is shown by photomicrographs illustrating this paper.
Photomicrographs are also used to show the honed and run-in surfaces of the untreated liner and the surface of a liner “as scratched.”

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