| 摘要 |
PURPOSE: To obtain a method for defatting and sintering the ceramic molded product or metal molded product, giving the ceramic sintered compact or metal sintered compact excellent in dimension and accuracy, high in homogeneity, and little in the deterioration of various characteristics and irregularity. CONSTITUTION: The mixture of ceramic powder or metal power with a binder consisting mainly of a polymeric compound is injection-molded or extrusion- molded, and the molded product is defatted. Therein, the columnar molded products 1 are inserted into aluminum pipes 2, and the aluminum pipes 2 are rotatably sealed in a SiC pipe 3. While the SiC pipe 3 is rotated in a continuous oven having a continuous temperature gradient, the molded products 1 are defatted, and the warpage and deformation of the molded products are prevented by the sizing of the rotation. The stress deformation of the molded products by the thermal treatment is removed due to the continuous temperature gradient, and the uniformity of the amount of residual carbon due to the always changes in the surface contacting with a floor plate is removed. The molded product is sintered by the same method as the defatting method. |
