FIELD: process engineering.
SUBSTANCE: invention relates to metallurgy. Lost pattern from foam polystyrene with gate-feeder system including the discard is painted with the dressing. The mould is produced and filled with metal. 15-75% of the gat-feeder system discard is hollow and filled with exothermal mix before moulding. Said mix contains the elements that follow (wt %), i.e.: oxidisable component - 5-65, oxidiser - 5-65, catalyst - 0-10, foamed vermiculite making the rest.
EFFECT: higher quality of casts, decreased discard and higher factor of metal use.
4 cl
| Title | Year | Author | Number |
|---|---|---|---|
| EXOTHERMIC SLAG-FORMING MIXTURE | 2010 |
|
RU2429940C1 |
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SU1764768A1 |
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RU2532716C2 |
| ALUMINUM ALLOYS CASTING METHOD | 2005 |
|
RU2285577C1 |
| 0 |
|
SU346012A1 |
