| 摘要 |
1,036,554. Deburring valve bodies, blasting. FORD MOTOR CO. Ltd. May 26, 1965 [Aug. 12, 1964], No. 22482/65. Headings B3A and B3D. An aluminium casting is anodized and machined to shape, e.g. to form a valve in an hydraulic transmission. The anodizing renders any burrs formed brittle and the brittleness is increased by further anodizing after machining. The burrs are removed by an abrasive blast. |
