PURPOSE: To improve cooling performance and to obtain a sound casting by disposing a spiral cooling pipe on the shell layer formed on the surface of a pattern by melt spraying and constituting a metal mold by the melt sprayed metallic layer formed in such a way as to embed the cooling pipe.

CONSTITUTION: A pattern 2 of a circular cylindrical shape 2 for making a mold cavity 2a and a casting flask 3 of a cylindrical shape which encloses the outside circumference thereof apart therefrom are disposed on a molding board 1. Metal is melt sprayed on the outside circumferential surface of the pattern 2 and the inside circumferential surface of the flask 3 so as to unit these metals to one body thereby forming a shell layer of 2W10mm thickness. A cooling pipe 5 of Cu, Al, etc. is provided on the outside circumference of the layer 4 so as to be wound spirally, and both ends are projected to the outside part of the flask 3. The metal is melt sprayed until at least the pipe 5 is embedded therein on the shell layer 4, thereby forming a melt sprayed layer 6.