| 摘要 |
A method for simultaneously shot peening and smoothing includes use of relatively large, smooth, hard, spherical steel shot having a substantially uniform diameter in the range 1-2.5 mm. Titanium workpieces are provided in one step with a compressive stress layer of the order of 0.13 mm and a surface finish of better than 15x10-6 inch AA, compared to conventional peened finishes of the order of 40x10-6 inch AA. Surface finish and peening intensity are inter-related and dependent on shot diameter, mass, velocity, and energy within relatively small limits. The shot diameter is uniform within +/-0.05 mm; the shot impact velocity is uniform within +/-4 percent or less, in the range 1.4-12 m/s.
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