Rapid manufacturing method of resin casting core box

Abstract

The invention provides a rapid manufacturing method of a resin casting core box. The rapid manufacturing method comprises the following steps: (1) obtaining sub-core box prototypes for manufacturing a resin casting core box prototype by machining a polystyrene foam material on a numerical control milling machine; (2) coating the inner surface of each sub-core box prototype with a layer of mixture, and carrying out random fixation on the surface of the mixture by using a gypsum layer, thus obtaining sub-convex molds of sub-core boxes needed for manufacturing the resin casting core box; (3) machining mixture layers cured on the sub-convex molds into the design size of each part of the corresponding resin core box by using the numerical control milling machine; (4) coating the outer surface of each sub-convex mold with a layer of mixture, then completely putting the sub-convex molds in a metal plate framework, filling with coating materials, and after curing the mixture and the coating materials, obtaining the sub-resin core boxes of the resin casting core box; and (5) assembling the sub-resin core boxes so as to obtain the complete resin casting core box. The rapid manufacturing method is short in manufacturing cost, short in molding period and simple in process; and the surface quality of the core box is high.

Description

technical field [0001] The invention relates to a rapid manufacturing method of a resin casting core box, which belongs to the technical field of casting. Background technique [0002] At present, in the domestic casting production process, except for a few casting core boxes that use metal molds, most of them are made of red pine or other wood materials and processed by hand. The use of casting core boxes made of wooden materials The performance (such as surface hardness and wear resistance, etc.) is not good, and the service life of the wooden mold is often not long due to the damage of the mold and the core box during use. Compared with the wooden casting core box, the resin casting core box has a long service life and good surface finish, and is suitable for forming complex shapes. Compared with metal molds and core boxes, its service life is close and the surface finish is also good. The CNC milling machine processes the polystyrene foam material and the concave and co...

AI Technical Summary

Problems solved by technology

[0002] At present, in the domestic casting production process, except for a few casting core boxes that use metal molds, most of them are made of red pine or other wood materials and processed by hand. The use of casting core boxes made of wooden materials Poor performance (such as surface hardness and wear resistance, etc.), often due to damage to the mold and core box during use, the service life of the wooden mold is not long