FIELD: process engineering.
SUBSTANCE: invention relates to metallurgy. Proposed method comprises moulding of sodium silicate mix and removal of pattern composition. Sodium silicate mix contains refractory filler, liquid glass and liquid hardener. Pattern melting is performed at 180°C while residues of wax-like composition are removed at 400-500°C in unoxidised atmosphere of resistance furnace.
EFFECT: higher hardness of the mould, reduced burning-in owing to formation of protective carbon oxide.
2 cl, 3 dwg, 2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF MELTING OUT PATTERNS FROM SHELL CASTING MOULDS | 0 |
|
SU984631A1 |
| METHOD OF FIXING LAYERS OF LIQUID-GLASS COATING IN INVESTMENT CASTING | 2009 |
|
RU2412778C1 |
| METHOD OF MAKING CERAMIC SHELL MOLDS FOR CASTING ON MOLTEN MODELS | 2019 |
|
RU2707642C1 |
| METHOD OF PRODUCING DOUBLE-LAYER CASTING MOULDS | 0 |
|
SU825268A1 |
| SOLUTION FOR STRENGTHENING CERAMIC SHELL MOULDS | 0 |
|
SU599910A1 |
| METHOD FOR MANUFACTURE OF FOUNDRY CORES OR MOLDS FROM WATER GLASS MIXTURES | 1994 |
|
RU2082539C1 |
| METHOD OF MELTING PATTERN COMPOSITION FROM MULTIPLE SHELL MOULD | 0 |
|
SU1155347A1 |
| COMPOSITION FOR MAKING INTERMEDIATE AND OUTER LAYERS OF CASTING MULTILAYER CYRAMIC MOULDS OBTAINED BY INVESTMENT PATTERNS | 0 |
|
SU876249A1 |
| METHOD OF RECEIVING OF STEEL CASTINGS | 2006 |
|
RU2367539C2 |
| LOST-PATTERN COMPOSITION | 0 |
|
SU1284679A1 |
