Method for preparing full-mold casting coating
A technology of solid casting and coating, which is applied to casting molding equipment, coatings, casting molds, etc. It can solve the problems of black pollution in the working environment, high manufacturing cost, and inability to apply manual brushing, etc. It achieves high surface strength and is easy to operate , good suspension and thixotropy effect
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Embodiment 1
[0019] A method for preparing a full mold casting coating, the coating consists of the following components in parts by weight: 70 parts of quartz powder, 15 parts of olivine powder, 10 parts of corundum powder, 6 parts of sodium bentonite, 1 part of lignosulfonic acid, 3 parts of dextrin powder, 0.8 parts of sodium carboxymethyl cellulose, 0.6 parts of sodium benzoate, 1 part of hollow glass microspheres, 9 parts of aluminum sulfate, 4 parts of polyvinyl alcohol, 6 parts of silica sol, 0.5 parts of iron oxide powder, 0.06 part of octanol, 15 parts of water; Described preparation method comprises the steps:
[0020] 1) Mix sodium-based bentonite and dextrin powder with an appropriate amount of water, stir evenly, and let stand for 36 hours to obtain a sodium-based bentonite and dextrin powder-water mixture;
[0021] 2) Mix polyvinyl alcohol with an appropriate amount of water, stir well, then let it stand for 30 minutes, then slowly heat to 95°C and stir well, until the soluti...
Embodiment 2
[0028] A method for preparing a full mold casting coating, the coating consists of the following components in parts by weight: 80 parts of quartz powder, 10 parts of olivine powder, 15 parts of corundum powder, 4 parts of sodium bentonite, 2 parts of lignosulfonic acid, 2 parts of dextrin powder, 1.5 parts of sodium carboxymethyl cellulose, 0.4 parts of sodium benzoate, 2 parts of hollow glass microspheres, 7 parts of aluminum sulfate, 6 parts of polyvinyl alcohol, 5 parts of silica sol, 0.8 parts of iron oxide powder, normal 0.04 part of octanol, 25 parts of water; Described preparation method comprises the steps:
[0029] 1) Mix sodium-based bentonite and dextrin powder with an appropriate amount of water, stir evenly, and let stand for 48 hours to obtain a sodium-based bentonite and dextrin powder-water mixture;
[0030] 2) Mix polyvinyl alcohol with an appropriate amount of water, stir well, then let it stand for 30 minutes, then slowly heat to 95°C and stir well, until t...
Embodiment 3
[0037] A method for preparing a solid casting coating, the coating is composed of the following components in parts by weight: 75 parts of quartz powder, 13 parts of olivine powder, 13 parts of corundum powder, 5 parts of sodium bentonite, 1.5 parts of lignosulfonic acid, 2.5 parts of dextrin powder, 1.2 parts of sodium carboxymethyl cellulose, 0.5 parts of sodium benzoate, 1.5 parts of hollow glass microspheres, 8 parts of aluminum sulfate, 5 parts of polyvinyl alcohol, 5.5 parts of silica sol, 0.6 parts of iron oxide powder, normal 0.05 part of octanol, 20 parts of water; Described preparation method comprises the steps:
[0038]1) Mix sodium-based bentonite and dextrin powder with an appropriate amount of water, stir evenly, and let stand for 42 hours to obtain a sodium-based bentonite and dextrin powder-water mixture;
[0039] 2) Mix polyvinyl alcohol with an appropriate amount of water, stir well, then let it stand for 45 minutes, then slowly heat to 85°C and stir well, u...
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