Method for preparing solid-mold casting coating material for cast iron
A technology of solid casting and coating, applied in the direction of casting molding equipment, casting molds, casting mold components, etc., can solve the problems of inapplicability to manual brushing, poor high temperature resistance, and inability to adapt to production, etc., and achieve good suspension and touch Denaturation, high anti-sand sticking ability, low production cost
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[0014] A method for preparing a solid casting coating for cast iron, which consists of the following components in parts by weight (kg): 75 parts of quartz powder, 7 parts of tree ash, 12 parts of corundum powder, 12 parts of sodium bentonite, and nano-attapulgite 4 parts, 1 part of lignosulfonic acid, 4 parts of water glass, 4 parts of sodium borate, 7 parts of starch paste, 1.4 parts of silica sol, 1 part of nano-scale ceramic powder, 0.8 parts of iron oxide red powder, 2 parts of fluorite powder, leech 3 parts of stone powder, 1 part of coal gangue powder; 64 parts of water, the preparation method comprises the following steps:
[0015] 1) Soak tree ash with 12-15% sulfuric acid for 3-4 hours, wash with deionized water, then soak with 10-12% sodium hydroxide solution for 2-3 hours, then wash with deionized water until neutral, and then After calcining at 460-500°C for 2-3 hours, add starch paste equivalent to 8% of its weight, 9% sodium hydroxide powder, and an appropriate ...
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