Method for moulding light alloy cast parts, in particular cylinder blocks
US7270168B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2003 |
| Grant date | Sep 18, 2007 |
| Priority date | — |
| Expiry date | Jun 20, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D19/0009
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention concerns a method for casting a part made of metal alloy such as an aluminum alloy comprising the following steps: forming a core (N, PNC) having at least one shaft (PC) designed to form in the part a cylinder and at least one cavity (P) designed to form in the part a support and/or retaining zone for a working member, and at least a cooling unit (RE) proximate to the cavity; positioning the core in a metal mould cavity, and feeding the mould lined with its liquid alloy core by gravity. The invention is particularly useful for casting internal engine cylinder blocks with aluminum cylinders with improved geometrical and mechanical properties of the crankshaft bearing zones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.