Shot Blasting And Its Effect On Fatigue Life

Author:  Zimmerli
Source:  ASM: 1941, p.261-278
Doc ID:  1941006
Year of Publication:  1941
Abstract:  
This article deals with a new method of surface finishing called, for want of a better name, "shot blasting". A fatigue machine for small springs is described. Data from this machine show that by using valve spring wire, increases in fatigue values exceeding forty per cent have been obtained. Results on other materials are presented. The investigation demonstrates that excessive heating will remove the beneficial effects. Various commercial factors, as size of shot, velocity of impact, methods of applying shot to work, etc., are discussed.