PARTING COATING FOR CASTING MOULDS Russian patent published in 2016 - IPC B22C3/00 

FIELD: technological processes.

SUBSTANCE: invention relates to metallurgy and can be used for colouring moulds, for casting aluminium alloys at low pressure. Parting coating contains filler in form of a mixture of powders of titanium dioxide with particle size of up to 1 mcm, talc with particle size of up to 25 mcm, pulverised quartz with particle size of up to 10 mcm and barium sulphate with particle size of up to 6 mcm, liquid glass and water in following ratio of components, wt%: titanium dioxide 3-6, talc 1-4, pulverised quartz 0.5-2, barium sulphate 0.5-3, liquid glass 6-11, water - balance.

EFFECT: coating provides higher surface quality of accurate thin-wall casts.

1 cl, 1 tbl