FIELD: metallurgy.
SUBSTANCE: exothermal mixture contains, wt %: aluminium powder 17.0-27.0, iron oxide 9.0-15.0, niter 2.0-6.0, cryolite 2.0-6.0, sodium tripoliphosphate 0.1-0.5, refractory filler 32-62.4, self-curing composition of liquid glass and complex ether hardener 7.5-13.5. Refractory filler in form of glass sand or chamotte powder additionally contains light weight fire resistant filler in ratio to volume of basic fire resistant filler 4:1 to 1:4. Mixture contains ash sphere or ground claydite as light weight filler. Exothermal mixture possesses high strength and heat insulating properties eliminating heat drying of shells.
EFFECT: reduced cycle of exothermal shell production, increased efficiency of heat effect to head zone of steel and iron castings.
4 cl, 4 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| EXOTHERMAL MIXTURE FOR HEATING HEADS OF STEEL AND IRON CASTINGS | 2008 |
|
RU2369462C1 |
| 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 |
| MIXTURE FOR PRODUCING EXOTHERMIC INSERT | 0 |
|
SU1764807A1 |
| EXOTHERMIC MIXTURE FOR HEATING FEEDER HEAD | 0 |
|
SU952430A1 |
| 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 |
