| 摘要 |
<p>A method of making a bearing composed of a bronze preform (10) having aluminum or aluminum alloy cast thereabout. The method includes the step of placing the bronze preform (10) in a mold (12) so as to be supported at one end (14) thereof. The bronze preform (10) is formed of bronze having lead with a determined melting point and boiling point. The molten aluminum or aluminum alloy as at (16) is at a temperature between the melting point and boiling point of lead in the bronze preform (10) and is fed into the mold (12) under pressure after the bronze preform (10) has been placed therein. The molten aluminum or aluminum alloy as at (16) contacts the bronze preform (10) and produces a molten lead during partial erosion of the surface (18) thereof. In this manner, the molten aluminum or aluminum alloy as at (16) forces the molten lead away from the surface (18) of the bronze preform (10) and is metallurgically bonded without an intervening lead band directly to the bronze preform (10).</p> |
