Injection mold for semi-solidified Fe alloy
US6810941B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 30, 2002 |
| Grant date | Nov 2, 2004 |
| Priority date | — |
| Expiry date | May 30, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D17/007
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An injection mold for casting a semi-solidified Fe alloy includes a scalping gate for eliminating surface oxide film of a semi-solidified Fe alloy injected into the mold cavity from a pressure chamber. The scalping gate is arranged between the pressure chamber and a runner that is in communication with the mold cavity. The mold halves and the scalping gate are each formed of a copper alloy having a thermal conductivity of not less than 120 W/(m·K) and a hardness of not less than 180 HB. The mold halves and the scalping gate each have a cermet layer consisting essentially of at least one member selected from a group consisting of Co, Cu, Cr and Ni. The cermet layer is formed by electro-spark deposition, via an intermediate layer of Ni alloy, which is also formed by electro-spark deposition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.