MOLD PRODUCTION APPARATUS AND METHOD

摘要

A mold production apparatus and method capable of producing a mold of intricate shape with stabilized quality. In the production method, an apparatus comprising a mold having a cavity internally, a steam supply unit, a steam suction passage to the cavity, a plurality of steam discharge passages, a means arranged in the steam discharge passages and regulating the steam flow discharged from the cavity, and a means for controlling the flow regulation means is used. The cavity of a heated mold is filled with resin-coated sand produced by coating refractory aggregate with a binder resin and then supplied with overheated steam. The flow regulation means is controlled by the control means such that the cavity is filled with overheated steam uniformly.