| PATENT ASSIGNEE'S COUNTRY | Japan |
| UPDATE | 06.99 |
| PATENT ASSIGNEE | Sintokogio Ltd |
| PATENT CLAIMS |
Method of shot peening a hard metal prodt comprising - Projecting shot on hardened surface of hard metal prodt which is first treated to produce the hardened surface, wherein the shot has a Vickers hardness > 1000 HV, wherein ratio of Vickers hardness of shot to that of the harde ned surface of the hard metal prodt to be shot peened is 0.8-1.6 & wherein diam. of shot is 30-250 microns |
| PATENT PHOTOCOPY | Available on request |
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