| 摘要 |
PURPOSE:To improve working efficiency and to reduce the cost of a product by fixing a powder synthetic material to a thin metallic sheet, etc. to form a stock then setting the stock in a casting mold and pouring a molten metal into the mold. CONSTITUTION:The powder synthetic material (a) consisting of Al, carbon, etc. prior to sintering is formed and is fixed to the paper or thin metallic sheet (b) at a prescribed thickness to the extent of preventing the sepn. thereof to form the stock 1. The stock 1 is fixed by an adhesive agent to a core 2 of the diameter corresponding to the inside diameter (d) of the cylinder to constitute a cavity (c) corresponding to the cylinder thickness. The melt of the cylinder material is poured into the cavity (c) and the stock 1 is heated at the temp. of the melt. The stock 1 is fixed in the sintered state to the inside wall surface of the cylinder by the cooling and solidification of the melt. The two operations; sintering and casting are simultaneously executed by the above-mentioned method, by which the working efficiency is improved and the product cost is reduced.
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