| 摘要 |
<p>A method of flow forming sintered metal parts. The first step is forming a round disk (15, 16, 17) by conventional powder metal process. The disk (15, 16, 17) can be a donut shape part with or without a flange on one side of its outer diameter. The disk (15, 16, 17) can then be copper impregnated or used as is, depending on the requirements. The disk (15, 16, 17) is placed in a spinner held (T) in proper tooling (20) and grooves are spun in its outer diameter. The spinning can be done with a finishing roller or by a pre- finishing roller, followed by a finishing roller. This process not only creates a part with great accuracy, it also densifies and eliminates the powder metal porosities on the surface layer by the pressures inserted in spinning.</p> |
