| 摘要 |
A light metal alloy piston having a reinforcement insert (2) in the top of the crown is made by casting the piston in the crown-down position by introducing the metal alloy (3) above the reinforcement insert (2), which may have anchoring legs (4) with enlarged ends (5), under conditions of heat and pressure so as to cause the piston alloy (3) to form around the reinforcement insert (2), and the legs (4), and promote an intimate bond between the alloy and the insert. |
