Method for use in casting technology

摘要

PCT No. PCT/EP95/01994 Sec. 371 Date May 17, 1996 Sec. 102(e) Date May 17, 1996 PCT Filed May 24, 1995 PCT Pub. No. WO95/32824 PCT Pub. Date Dec. 7, 1995The geometry of the cast part is provided as a digital pattern and an inverse pattern for the lost casting mold including any core is generated from the digital pattern. A layer of a particulate molding material is provided. The molding material is made of a first material and a second material. The first material is chemically inert when irradiated by electromagnetic radiation. The second material is curable by a chemical curing process that is initiated by electromagnetic radiation. The layer is scanned by irradiating electromagnetic radiation on places of the layer corresponding to the inverse pattern for the lost casting mold including any core. The irradiation is controlled to initiate the chemical curing process in the second material. The layer providing, scanning and controlling steps are repeated for subsequent layers of the molding material to connect each layer to the immediately preceding layer by the irradiation to produce the lost casting mold including any core for subsequently casting the desired cast part.