FIELD: process engineering.
SUBSTANCE: proposed method comprises applying layers of liquid-glass coat on investment pattern by dipping pattern with afore made coat into fixation solution of silica-boron-phosphate concentrate and sodium carboxymethyl cellulose taken in 4:1 ratio by volume. Solution is first poured into ultrasound bath to provide ultrasound effect of 1…5 W/cm2. At the same time, evacuation at residual air pressure of (0.1…0.5)×105 Pa is carried out.
EFFECT: optimum level of bubbles dispersion, improved physical and mechanical properties of patterns and rods.
1 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| SOLUTION AND METHOD FOR CHEMICALLY FIXING LAYERS OF LIQUID-GLASS COATING AT CASTING WITH USE OF INVESTMENT PATTERNS | 2003 |
|
RU2228816C1 |
| METHOD OF MOULD MAKING BY INVESTMENT PATTERNS (VERSIONS) | 2011 |
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| SAND FOR MAKING MOLDS AND CORES WITH GYPSUM BINDER AT PRODUCING CASTINGS OF NON- FERROUS AND PRECIOUS ALLOYS | 2000 |
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| ALUMINIUM ALLOY CASTING METHOD | 2013 |
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| METHOD FOR MAKING CORES AND MOLDS WITH USE OF GYPSUM BINDER AT MAKING CASTINGS OF FERROUS AND NON-FERROUS ALLOYS | 2002 |
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RU2691914C1 |
