Method and system of sensing abnormalities in a degassing flow path of a vacuum die casting machine
US5086824A · kind A · utility
6Cited by
0References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1989 |
| Grant date | Feb 11, 1992 |
| Priority date | — |
| Expiry date | Jun 16, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D17/145
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method and system is described for sensing an abnormality in a degassing flow path of a vacuum die casting machine. When a vacuum device is operated to degas a gas in a cavity of a mold, a gas speed flowing through a piping is detected. The gas speed thus detected is compared with the predetermined maximum proper air speed value to determine whether the maximum gas speed value falls into the tolerance limits of the maximum proper air speed value or not. In this comparison, when the detected value departs from the tolerance limits, it is regarded that a clogging has occurred in the degassing system and an alarm is issued.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.