Manufacturing method for machine tool castings

• Main Authors: OU XIATIAN, BAI DONG, TANG RENFEN, LUO WEIDONG, ZHANG CI, MO GUOXIAN
• Format: Patent
• Language: Chinese; English
• Published: 30.07.2021
• Subjects: CASTING; FOUNDRY MOULDING; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING

The invention discloses a manufacturing method for machine tool castings. The manufacturing method comprises the following steps that region division is performed according to structures of the product castings, and metal molds in corresponding shapes are prepared according to the region division; expandable polystyrene resin beads are cured, and the cured expandable polystyrene resin beads are filled into mold cavities of the corresponding metal molds to obtain a plurality of foam models in different shapes; the multiple foam models are spliced into corresponding casting models according to the structures of the product castings; planes are scraped by using molding sand to obtain molding sand surfaces, then alcohol paint is brushed on the molding sand surfaces, and then putting into the casting models is performed; a sand box is vacuumized by using a vacuum pump, and sand grains are bonded together by virtue of the difference between the atmospheric pressure and the pressure in the casting models; and molten