| 摘要 |
PURPOSE: A method for manufacturing a spray mold using a composite material formed with polymer resin and a metal is provided to prevent a sprayed layer from being deformed or destroyed when the sprayed layer is separated, and to easily separate the sprayed layer at a temperature of less than 200°C without the deformation or the destruction of the sprayed layer by a low adhesive strength on an interface. CONSTITUTION: A method for manufacturing a spray mold using a composite material formed with polymer resin and a metal manufactures the model of a mold or a figure having a pattern opposite to the model to be manufactured by a spray process with the composite material. The composite material is manufactured by mixing thermosetting resin, as the polymer resin, with metal powder, short fibers, or processing powder, as the metal material, at an amount of less than 80 vol% of the entire volume of the composite material. The thermosetting resin is epoxy resin, urethane resin or a compound thereof, and the metal material is at least one or two kinds of compounds selected from a group of aluminum, a copper alloy, and an iron alloy. In manufacturing the figure, a cooling pipe, which communicates with the outside of the model or the figure, is buried so that the model or the figure can be cooled through the cooling pipe with water-cooling or air-cooling in order to control the temperature in the spray process. [Reference numerals] (S1) Preparing a master model; (S10) Spray process; (S2) Manufacturing a mold; (S3) Installing a cooling device in the mold; (S4) Mixing thermosetting resin and metal powder into a model material; (S5) Mixing a hardener with the model material; (S6) Coating a releasing agent on the mold; (S7) Injecting the model material into the mold; (S8) Degassing after injection; (S9) Separating from the mold after hardening
|
