| 摘要 |
PURPOSE:To reduce the manufacturing cost of a product by executing a pressure forming by combining a die made of a high strength cement and a die in which at least a surface layer part has been constituted of a metallic material. CONSTITUTION:A die 1 made of high strength cement is manufactured by placing a reinforcing bar 2, etc. in a die frame 3, and by means of casting by using a cement substance a superfine powder, a water reducing agent, an aggregate, water, etc. A metallic die 5 is manufactured at least by constituting its surface layer part of a metallic material. The metallic die 5 can also be constituted of a cast iron, various alloys and a non-ferrous metal, etc. Next. the metallic die 5 is used by combining with the die 1 made of a high strength cement and a wrinkle holder 4, and forming of a metallic plate is executed by a press, etc. In this way, the manufacturing period of the dies 1, 5 and the cost are shortened and reduced remarkably, respectively. Accordingly, the manufacturing cost of a product is reduced remarkably. |
