Method for producing castings, casting apparatus, and gas-blowing nozzle used in casting apparatus
US10213828B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2017 |
| Grant date | Feb 26, 2019 |
| Priority date | — |
| Expiry date | Dec 19, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D27/13
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for producing a casting by pouring a metal melt by gravity into a gas-permeable casting mold having a cavity comprising at least a sprue, a runner and a product-forming cavity, comprises pouring a metal melt into a desired cavity portion including the product-forming cavity through the sprue, the melt being in a volume smaller than the volume of an entire cavity of the gas-permeable casting mold and substantially equal to the volume of the desired cavity portion; supplying a gas to the desired cavity portion through the sprue before the desired cavity portion is filled with the poured melt, so that the melt fills the desired cavity portion and solidifies; the gas being supplied from a gas-blowing nozzle fit into the sprue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.