Method for preparing 3DP of integral sand mold
An integral, 3DP technology, applied in casting molding equipment, cores, molds, etc., can solve the problems of sand mold preparation failure of sprinkler heads, clogging of sprinkler heads, etc.
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[0029] The 3DP preparation method of monolithic sand mold of the present invention comprises the following steps:
[0030] S1, mix sodium silicate powder, disodium hydrogen phosphate powder with 3D printing sand, stir well until mixed evenly, and obtain 3DP molding material; wherein the particle size of 3D printing sand is 70-140 mesh, sodium silicate powder and dihydrogen phosphate The particle size of the sodium powder is 300-500 mesh, the mass of the sodium silicate powder is 8% to 12% of the mass of the 3D printing sand, and the mass of the disodium hydrogen phosphate powder is 2% to 4% of the mass of the 3D printing sand.
[0031] S2, fully mix absolute ethanol and deionized water at a volume ratio of (1:1)-(1.5:1), dissolve sodium silicate powder in the mixed solution until the solution is saturated, then let stand and filter obtain a clear solution, and use the obtained clear solution as an inorganic binder;
[0032] S3, using the above-mentioned 3DP molding material a...
Embodiment 1
[0051] Using the 3DP preparation method of the integral sand mold of this embodiment to manufacture a sand mold of a large integral high-pressure multi-way valve body with a large number of complex internal flow channels includes the following steps:
[0052] S1, mix 300-500 mesh sodium silicate powder, 300-500 mesh disodium hydrogen phosphate powder and 70-140 mesh pearl sand, stir well until the mixture is uniform, and obtain 3DP molding materials; wherein, the content of sodium silicate powder is pearl sand 12% of the mass of sand, and the content of disodium hydrogen phosphate powder is 2% of the mass of Baozhu sand;
[0053] S2, fully mix absolute ethanol and deionized water at a volume ratio of 1:1, dissolve sodium silicate powder in the mixed solution until the solution is saturated, then stand still and filter to obtain a clear solution, and use the obtained clear solution as an inorganic viscous Adhesive;
[0054] S3, using the above-mentioned 3DP molding material an...
Embodiment 2
[0062] Using the 3DP preparation method of the integral sand mold of this embodiment to manufacture the sand mold of the pump body of the hydraulic pump includes the following steps:
[0063] S1, mix 300-500 mesh sodium silicate powder, 300-500 mesh disodium hydrogen phosphate powder and 70-140 mesh quartz sand, stir well until the mixture is uniform, and obtain a 3DP molding material; wherein, the sodium silicate powder content is quartz 10% of the mass of sand, the content of disodium hydrogen phosphate powder is 3% of the mass of quartz sand;
[0064] S2, fully mix absolute ethanol and deionized water at a volume ratio of 1.5:1, dissolve sodium silicate powder in the mixed solution until the solution is saturated, then stand still and filter to obtain a clear solution, and use the obtained clear solution as an inorganic viscose Adhesive;
[0065] S3, using the above-mentioned 3DP molding material and inorganic adhesive as raw materials for 3D printing;
[0066] S4, will b...
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