Patent ID: 8122939
Filing Date: 2012-02-28
Classification: B22C,B29C,B33Y,Y02P

Abstract:
1. A method for producing a metal casting mold comprising: a) applying to an assembly platform a layer of a first material, the first material comprising moulding sand particles; b) mixing a bonding agent into a second material; c) selectively applying the second material and the bonding agent mixture to a cross-sectional area of the first material, in a sufficient dose so that the bonding agent binds the moulding sand particles together; d) removing the second material through drying after an appropriate reaction time has lapsed; e) lowering the assembly platform; and f) repeating steps a)-e) until the metal casting mold is achieved and both the first material and the bonding agent form a solid structure in an appropriate mixture ratio; wherein the bonding agent includes a salt-crystal binder, protein binder, or both.