| 摘要 |
PURPOSE:To obtain a composite material having high resistance to abrasion and impact, by bringing the melt of an abrasion resistant metal into contact with one surface of an iron plate applied with Ni-P plating on both surfaces and the melt of an impact resistant metal with the other surface, respectively, and joining both metals securely with the iron plate. CONSTITUTION:The above-described composite material, for example, a tooth plate for a jaw crusher, is manufactured by the following method: The melt of an abrasion resistant metal is charged from a sprue 5 through a runner 6 into a casting mold space 2. On the other hand, the melt of an impact resistant metal is charged from a sprue 7 through a runner 8 into a casting mold space 3. The inside of the casting mold in this case is beforehand partitioned with an iron plate 4 plated with Ni-P plating on both surfaces to the spaces 2 and 3. The mold is knocked out after an ordinary curing period upon completion of the charging into both spaces 2, 3. The runner, gate and riser are removed, and the casting is subjected to annealing, in-furnace cooling and further to heating and air hardening, whereby the end product is obtained. |
