Magnesium die casting machine
US5299623A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1993 |
| Grant date | Apr 5, 1994 |
| Priority date | — |
| Expiry date | Feb 19, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D17/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A machine for producing metal die castings is disclosed and comprises a crucible that incorporates an injection pump assembly which is mounted in such a way as to clear the upper access of the crucible to facilitate cover sealing and removing. The crucible is located in a furnace and is reciprocable to move the injection barrel and nozzle to and from a mold. The injection barrel is immersed in the crucible beneath the level of the molten metal to enhance heat transfer between the barrel and injected metal. The separate plunger and shot assemblies are located in the pump body in a "V" configuration so that maintenance of these units can be carried out without exposing the top of the furnace to the atmosphere. The plunger and shot assemblies include sealing means in connection with their actuating mechanisms to avoid molten metal splashing outside of the crucible when they are moving in an injection operation and to prevent the ingress of moisture, hydraulic fluid or the like into the crucible or injection chambers. The apparatus is particularly suitable for use with high melting point alloys such as magnesium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.