PURPOSE: To make the entire wall thickness uniform and to obtain a smooth surface having no wrinkle, etc. on the inside surface by spray cooling the inside surface of a casting pipe at a suitable timing after casting.
CONSTITUTION: Water is sprayed in a casting pipe immediately after end of casting a molten metal in the stage of casting centrifugally a thick walled pipe. The solidification of the pipe is accomplished simultaneously from the outside surface and inside surface and the pipe is cast roughly to uniform thickness over the entire wall thickness without forming wrinkle and ruggedness in the inside surface. A water cooling system by atomized spary cooling is expected to provide a much higher cooling effect as the absorbing power of the latent heat of solidification is large in this method.
NAGAO SHIYOUZOU
TOGAWA SUSUMU
KUROTOBI MANABU
| JP15009933Y1 | ||||
| JPS57118851A | 1982-07-23 |