| 发明名称 |
Thixocasting process of an alloy material |
| 摘要 |
In carrying out of a thixocasting process, a material in a semi-molten state is produced by heating an aluminum alloy material which has a thermal characteristic that a first angled endothermic section generated by the melting of a eutectic crystal and a second angled endothermic section generated by the melting of a component having a melting point higher than an eutectic point exist in a differential calorimetric curve. A start point of a primary pressing stage is established at a point when the temperature T of the material is in a range of T1<T</=T4 in the relationship between the temperature T1 of a rise-start point in the first angled endothermic section and the temperature T4 of a peak of the second angled endothermic section. At the primary pressing stage, the charging of the material into the cavity in a casting mold is completed. A start point of a secondary pressing stage is established at a point when the temperature T of the material is in a range of T1<T</=T3 in the relationship between the temperature T1 of the rise-start point in the first angled endothermic section and the temperature T4 of a drop-end point in the first angled endothermic section. At the secondary pressing stage, the material is solidified.
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| 申请公布号 |
US6053997(A) |
申请公布日期 |
2000.04.25 |
| 申请号 |
US19970956188 |
申请日期 |
1997.10.22 |
| 申请人 |
HONDA GIKEN KOGYO KABUSHIKI KAISHA |
发明人 |
NAKAMURA, TAKEYOSHI;SAITO, NOBUHIRO;KIKAWA, KAZUO;SUGAWARA, TAKESHI |
| 分类号 |
B21D21/00;B22D17/00;C22C1/00;C22C21/02;C22C21/14;(IPC1-7):B21D21/00 |
主分类号 |
B21D21/00 |
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