METHOD FOR CONSTRUCTING MOLDS AND CORES LAYER BY LAYER BY MEANS OF A BINDER CONTAINING WATER GLASS, AND A BINDER CONTAINING WATER GLASS
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United States of America Patent
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Nov 9, 2017
app pub date -
Dec 11, 2015
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Dec 12, 2014
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Abstract
The invention relates to a binder, which contains water glass and further a phosphate or a borate or both. The invention further relates to a method for constructing molds and cores layer by layer, the molds and cores comprising a construction material mixture, which at least comprises a refractory molding base material, and the binder. In order to produce the molds and cores layer by layer in 3-D printing, the refractory molding base material is applied layer by layer and is selectively printed with the binder layer by layer, and consequently a body corresponding to the molds or cores is constructed and the molds or cores are released after the unbonded construction material mixture has been removed.
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