| 摘要 |
PURPOSE:To strengthen sticking between a metal reinforcement member and a non-metallic inorganic material as well as to prevent them from cracking, by operating some treatment in which the surface smoothness of the reinforcement is degraded to some extent, when an engine crackcase is molded with the non-metallic inorganic material. CONSTITUTION:When a box part 17 and a cover part 21 comprising an engine crankcase 13 is molded by concrete, iron reinforcement members 35 and 37 to be installed as reinforcements supporting members 43 and 45 supporting bearings 47 and the outer surface of bolt holding tubes 53 and 55 are all coated with a bonding material. Therefore, a layer of a solidified bonding material is formed in the space between the concrete part and the reinforcement members degrading the surface smoothness, sticking between both members is thus strengthened. |
