FIELD: foundry.
SUBSTANCE: mixture for making easily knockout moulds and cores contains, wt.%: liquid glass – 6, refractory clay – 1-3, quartz sand – 88-92 and a process additive of vegetal origin. As a process additive of vegetable origin, mixture contains 1-3 wt.% of spent coffee grounds with water content of 40 wt.%. Introduction of spent coffee grounds into the mixture on liquid glass binder in said amount reduces residual strength of moulds and cores.
EFFECT: improved knockout ability of moulds and cores from sand mixtures on liquid glass binder and recycling of wastes formed after preparation of coffee beans.
1 cl, 1 tbl, 1 ex
Title | Year | Author | Number |
---|---|---|---|
USE OF SPENT COFFEE GROUNDS AS SOFTENING PROCESS ADDITIVE FOR MAKING MOULDS AND CORES FROM SAND MIXTURES ON LIQUID GLASS BINDER | 2023 |
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COMPLEX ADDITION FOR IMPROVING KNOCKING-DOWN CAPABILITY | 0 |
|
SU850250A1 |
Authors
Dates
2024-06-06—Published
2023-12-27—Filed