Of long by spray deposit method Chu - blanking-shaped preform - No method of manufacturing

摘要

PURPOSE: To form a preform having an excellent quality by depositing a stream of spray after forming a metallic film on a preheated collector. ;CONSTITUTION: A second container 4 housing a preheater 9 for preliminarily heating and a metal 8 for forming a metallic film 11 is provided on the upstream side in the moving direction of a collector 1 for a long-sized preform. The metal 8 flowing out from the second container 4 is sprayed 10 with a low pressure on the preheated collector 1 to form a metallic film 11. Then, a stream of spray 12 from a first container 6 is deposited to form a tubular preform 13. The porosity of the preform 13 on the side of collector 1 is restrained. Thus, a tube-shaped preform of any length is arbitrarily formed.;COPYRIGHT: (C)1993,JPO&Japio