FIELD: metallurgy.
SUBSTANCE: invention relates to foundry field, particularly to composition of exothermal mixtures for heating of feeders of steel and iron castings. Mixture contains aluminium powder, oxidiser, processing aids and silicocalcium with silicon content not less than 50 wt % and calcium not less than 25 wt %, herewith in the capacity of oxidiser it is used dross at following ingredients correlation, wt %: aluminium powder 4.0 - 7.7, dross 57 - 62, silicocalcium 29 - 35, processing aids - the rest.
EFFECT: while using of the mixtur eit is reduced metal consumption for feeders with keeping of high grade of castings.
2 ex, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| EXOTHERMIC SLAG-FORMING MIXTURE | 2010 |
|
RU2429940C1 |
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|
SU804200A1 |
