FIELD: foundry.
SUBSTANCE: method comprises steps of making multi-layer ceramic mold by preparing suspension due to mixing melt glass with aqueous solution of ammonium chloride and pulverized quartz; applying prepared suspension layer by layer onto investment patterns and sprinkling quartz sand onto each layer of refractory coating; adding oil to first layer of refractory coating for hydro-mechanical and hydraulic displacement type transmissions; beginning from second layer adding to refractory coating 0.01 - 0.03 mass % of extrusion starch reagent; curing each layer in solution of ammonium chloride; then melting patterns in hot water; baking molds and pouring metal into them.
EFFECT: improved strength of ceramic molds due to adding starch reagent after melting patterns and after baking molds.
1 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR MAKING CERAMIC MOLDS AT CASTING WITH USE OF INVESTMENT PATTERNS AND WITH LIQUID GLASS AS BINDER | 2000 |
|
RU2200643C2 |
| METHOD OF MAKING MOLDS FOR CASTING WITH USE OF INVESTMENT PATTERNS | 2004 |
|
RU2297302C2 |
| SOLUTION FOR PREPARING WATER GLASS BINDER | 0 |
|
SU1068206A1 |
| METHOD OF MOULD MAKING BY INVESTMENT PATTERNS (VERSIONS) | 2011 |
|
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| METHOD OF MAKING CERAMIC SHELL MOLDS FOR CASTING ON MOLTEN MODELS | 2018 |
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RU2691914C1 |
| METHOD OF PRODUCING MULTILAYER INVESTMENT SHELL CASTING MOULDS | 2013 |
|
RU2532753C1 |
| METHOD OF MANUFACTURING MULTILAYER SHELL INVESTMENT MOULDS | 0 |
|
SU1136883A1 |
| METHOD OF MAKING A CERAMIC SHELL FOR CASTING ON MOLTEN PATTERNS | 2018 |
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RU2685827C1 |
