Method and apparatus for hardening of foundry cores
US4132260A · kind A · utility
9Cited by
6References
6Claims
0Family size
Inventor
Key dates
| Filing date | Oct 11, 1977 |
| Grant date | Jan 2, 1979 |
| Priority date | — |
| Expiry date | Oct 11, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H35/142
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
It is known to harden foundry cores by admixing a polymerizable material therewith and then curing by addition of a catalyst. Means are provided for injecting gaseous catalysts and compressed air, sequentially, into the die which contains the admixture of polymerizable material and foundry core material. In accordance with the invention, the gaseous catalyst and compressed air respectively, are injected into the die containing the mixture of foundry material in measured desired amounts and very rapidly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.