Pump with porus ceramic tube
First Claim
1. In a pump for use in a hot chamber type die casting machine of the type wherein the cylinder of the pump is immersed in molten metal and the molten metal in the cylinder is injected into a metal mould by a plunger operating in the cylinder through a main body constituting a goose neck shaped passage, the improvment which comprises a ceramic tube which is porous to molten metal which is cast in said main body of said pump and constitutes said goose neck shaped passage.
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Accused Products
Abstract
In a pump for use in a hot chamber type die casting machine wherein corrosive molten metal particularly aluminum or alloys thereof is injected into a metal mould through a goose neck shaped passage, a porous ceramic tube having a porosity of 10 to 40% and acting as the goose neck shaped passage is cast in the main body of the pump. The porous ceramic tube comprises sintered zircon or porous graphite.
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Citations
13 Claims
- 1. In a pump for use in a hot chamber type die casting machine of the type wherein the cylinder of the pump is immersed in molten metal and the molten metal in the cylinder is injected into a metal mould by a plunger operating in the cylinder through a main body constituting a goose neck shaped passage, the improvment which comprises a ceramic tube which is porous to molten metal which is cast in said main body of said pump and constitutes said goose neck shaped passage.
Specification