Core for molding a ceramic discharge vessel
View Patent ↗A method of molding a ceramic vessel includes compressing a water-soluble powder, suspending the compressed powder shape in a mold, injecting a ceramic molding mixture into the mold, and dissolving the compressed powder by flushing the vessel with water. A core for making an arc discharge vessel that has a discharge chamber and two capillaries includes a molded core of the water-soluble powder having a shape of the discharge chamber, and preferably two capillary-forming pins extending from the molded core. An apparatus for removing the molded core that includes a water reservoir that preferably flushes water through the vessel and dissolves molded core.
1. A core for molding a ceramic discharge vessel having a discharge chamber, the core comprising: a molded core comprising a compressed, water-soluble powder selected from the group consisting of starch, sucrose, lactose, fructose, sorbitol, mannitol, and dextrates, said molded core having a shape of the discharge chamber.
2. The core of claim 1 , wherein said molded core has a density of 1.2 to 1.6 gm/cc.
3. The core of claim 1 , wherein said molded core has a diametrical compression strength of 1 to 6 N/mm 2 .
4. The core of claim 1 wherein the molded core has a hole therethrough.
5. The core of claim 4 , further comprising two capillary forming pins extending from the molded core, each pin being inserted into an end of the hole.
6. A core for molding a ceramic discharge vessel having a discharge chamber, the core comprising: a molded core of a compressed, water-soluble powder selected from the group consisting of starch, sucrose, lactose, fructose, sorbitol, mannitol, and dextrates, said molded core having a shape of the discharge chamber and having two capillary-forming pins extending therefrom.
7. The core of claim 6 , wherein said molded core has a density of 1.2 to 1.6 gm/cc.
8. The core of claim 6 , wherein said molded core has a diametrical compression strength of 1 to 6 N/mm 2 .
9. The core of claim 6 wherein the molded core has a hole therethrough.