FIELD: metallurgy.
SUBSTANCE: invention can be implemented for fabrication of items in form of exothermal shells and insertions for heating of heads. Exothermal mixture contains, wt %: aluminium powder 16.0-25.0, iron oxide 8.0-14.0, niter 1.5-6.0, cryolite 2.0-6.0, refractory filler 5.0-64.0, binding in form of self-set composition 4.0-8.5. Self-set composition consists of polyphenolic acid and complex ether hardener. Additionally exothermal mixture contains light-weight filler in form of ash sphere or ground claydite in ratio with refractory filler from 4:1 to 1:4.
EFFECT: upgraded strength and thermo-insulating properties of exothermal mixtures before and after burning and fabrication of easy destroyed shells after casting moulds with metal.
2 cl, 4 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| EXOTHERMAL MIXTURE FOR HEATING OF HEADS OF STEEL AND IRON CASTINGS | 2008 |
|
RU2369461C1 |
| EXOTHERMAL MIXTURE FOR HEATING LOST HEADS OF STEEL AND CAST IRON CASTINGS | 2015 |
|
RU2601721C2 |
| EXOTHERMAL MIX FOR MAKING LOST HEADS | 0 |
|
SU969449A1 |
| EXOTHERMIC MIXTURE FOR HEATING CASTING HEADS | 0 |
|
SU804200A1 |
| EXOTHERMAL COMPOSITION | 0 |
|
SU1477516A1 |
| EXOTHERMAL COMPOSITION FOR HEATING TOPS OF IRON CASTINGS | 0 |
|
SU772710A1 |
| EXOTHERMAL SAND MIXTURE FOR HEATING THE TOP DISCARD | 0 |
|
SU608609A1 |
| EXOTHERMIC MIXTURE FOR HEATING COPPER AND ALUMINIUM ALLOY CASTING HEADS | 0 |
|
SU814563A1 |
| MIXTURE FOR PRODUCING EXOTHERMIC INSERT | 0 |
|
SU1764807A1 |
| EXOTHERMIC MIXTURE FOR HEATING FEEDER HEAD | 0 |
|
SU952430A1 |
