| 摘要 |
PURPOSE:To obtain a multi-layered metallic pipe for a cylinder liner, etc. having a thin wall thickness and high strength by passing a cooled casting mold through a hollow base metal filled therein with molten metals and melt-sticking a cast iron to the inside surface of the base metal. CONSTITUTION:Molten metals 1, 7 having the m.p. lower than the m.p. of a hollow base material 6 is poured into the metal 6 in the advancing direction of cooled casting molds 14, 15. The molds 14, 15 are relatively moved from one side of the metal 6 to the other side during said pouring. The metals 1, 7 cast to the outside surface of the molds 14, 15 having the outside diameter smaller than the inside diameter of the metal 6 and the inside surface of the metal 6 are cooled and solidified by said molds. The multi-layered metallic pipe consisting of the molten metals melt stuck to the base metal 6 and having a thin wall thickness and high strength is thus obtd. |
