Method of producing long size preform using spray deposit
AssigneeSumitomo Heavy Industries, Ltd.
InventorYoshio Ikawa
Life of this patent
Estimating the term…
Abstract
A method of producing long size preform is disclosed in which: a long size cylindrical collector extended in a manner penetrating a chamber is moved lengthwise thereof while it is rotated; a preheated metal layer is formed on the outer periphery of the collector by adhering a molten metal to the collector within the chamber at the upstream side in the traveling direction of the collector; and a molten metal is caused to be cumulated by spray deposit on the metal layer formed on the outer periphery of the collector by spraying the molten metal from the ceiling within the chamber at the downstream side in the traveling direction of the collector by way of an atomizer which ejects an inert gas. By using this method, porosity occurring on the collector side of the preform may be inhibited.
Claims7
A method of producing long size preform using spray deposit, comprising the steps of:
- causing a cylindrical base material for a long size preform to move longitudinally within a chamber while rotating the base material about the axis thereof;
- permanently forming a preheated metal layer on the outer periphery of the base material by permanently adhering a molten metal to said base material at the upstream side in the traveling direction of said base material within said chamber;
- and
- cumulating sprayed molten metal sprayed from a container over the metal layer on said base material by providing said container containing the molten metal for preforming spray deposit by means of an atomizer for ejecting an inert gas on the ceiling of said chamber at the downstream side in the traveling direction of said base material, said sprayed molten metal and said preheated metal layer being the same type of metal, and said sprayed molten metal being permanently fixed to said preheated metal layer;
- whereby porosity on the base material side of the preform is inhibited.
A method of producing sheet preform using spray deposit, comprising the steps of:
- providing, adjacent to the upstream side of an inert atmosphere chamber having a single roll type collector therein, a casting container containing a molten metal and having an outlet in proximity to a side surface of said collector and forming a metal layer for a certain angular range over the outer periphery of the collector by rotating the collector while continuously pouring the molten metal over the outer periphery of the collector from the pouring outlet of said casting container;
- providing on the ceiling of said chamber a container containing a molten metal for performing spray deposit by way of an atomizer ejecting an inert gas and forming a preform by cumulating the molten metal sprayed from said container on the metal layer on the outer periphery of said collector;
- providing, in said casting container, a hidden weir at one end thereof, said hidden weir projecting downward below the surface of the molten metal, for preventing impurities in said molten metal from being poured with said molten metal onto said preform;
- and
- pulling out the preform formed on said collector toward the downstream side of said chamber while continuously stripping it off from the collector toward the side thereof opposite to said pouring outlet of said casting container.
Dependencies are inferred from the claim text.