FIELD: foundry.
SUBSTANCE: invention relates to foundry. Spent coffee grounds are used as a softening process additive when making moulds and cores from sand mixtures based on liquid glass binder. Addition of coffee grounds to said mixture for moulds and cores helps to reduce residual strength of sand mixtures on liquid glass binder after calcination at temperature of fusion of the film of sodium silicates of the binder.
EFFECT: improved knockout ability of moulds and cores.
1 cl, 2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| MIXTURE FOR MAKING MOULDS AND CORES | 2023 |
|
RU2820616C1 |
| MIXTURE FOR MAKING MOULDS AND CORES AND METHOD FOR ITS PREPARATION | 2023 |
|
RU2813028C1 |
| MIXTURE FOR MAKING MOULDS AND CORES | 2022 |
|
RU2793659C1 |
| MIXTURE FOR FABRICATION OF CASTING MOULDS AND CORES | 2010 |
|
RU2425732C1 |
| MIXTURE FOR MAKING FOUNDRY MOULDS AND CORES | 0 |
|
SU1659161A1 |
| SAND COMPOSITION FOR MAKING MOULDS AND CORES | 0 |
|
SU1159715A1 |
| MIXTURE FOR MAKING MOLDS AND RODS | 2019 |
|
RU2703637C1 |
| GLASS-CUBES MIXTURE FOR MAKING MOLDS AND RODS AND METHOD FOR ITS PREPARATION | 2017 |
|
RU2688322C1 |
| COMPLEX ADDITION FOR IMPROVING KNOCKING-DOWN CAPABILITY | 0 |
|
SU850250A1 |
| STRENGTH-REDUCING ADDITIVE TO LIQUID GLASS COMPOSITION | 0 |
|
SU1181774A1 |
