| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem of a remained material as the obstacle at the starting time of forming by discharging the remained material in the fully melting state, in the case of forming a low melting point metal alloy by melting a forming material of the low melting point metal alloy showing thixotropy in the solid-liquid coexisting temperature range in the semi-solid state and injecting. SOLUTION: At the starting time of the forming work, the temperature in a heating and holding cylinder is risen to the temperature not lower than the liquidus temperature of the forming material and the remained material in the formation at the last time remained as the solid in this heating and holding cylinder is fully melted and the remained material is discharged with the injection under fully melting state. Then, metal raw material showing the thixotropy in the solid-liquid coexisting temperature zone is supplied into the heating and holding cylinder as the forming material and preliminary formation is performed while dropping the temperature in the heating and holding cylinder to the temperature of the solid-liquid coexisting temperature range of the forming material, and after this temperature reaches the solid-liquid coexisting temperature zone, the main formation is started. COPYRIGHT: (C)2005,JPO&NCIPI
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