Ceramic injection molding method for producing spray nozzles using waterproofing technology

Claims

1. A method for injection molding ceramics for the manufacture of spray nozzles using waterproofing technology, characterized in that it includes the following steps: injection molding of polymer waterproofing; surface injection molding of ceramics using a polymer core; and core removal by chemical dissolution; chemical debinding or water debinding; thermal removal of the binder; and sintering.

2. The method according to paragraph 1, characterized in that the stage of injection molding of waterproofing is performed using a polymeric material.

3. The method according to paragraph 1, characterized in that at the stage of surface injection molding of ceramics, the starting material is made of a ceramic material.

4. The method according to claim 1, characterized in that at the stage of surface injection molding of ceramics, polymer cores are inserted into molds for injection molding of ceramics.

5. The method according to paragraph 1, characterized in that at the stage of removing the core by chemical dissolution, the core rods are mechanically cut.

6. The method according to claim 1, characterized in that at the stage of removing the core by chemical dissolution, solvents are used to chemically dissolve the polymer.

7. The method according to paragraph 1, characterized in that at the stage of removing the core by chemical dissolution, the parts are placed in “cradles” and ultrasonic equipment with controlled temperature is used.

8. The method according to claim 1, characterized in that at the stage of removing the core by chemical dissolution and during the dissolution process, the parts are placed on perforated trays made of stainless steel and these trays are placed in boxes and placed on shelves that are constantly moved.

9. The method according to paragraph 8, characterized in that the movement of the shelves optimizes the dissolution process.

10. The method according to paragraph 8, characterized in that the movement of the shelves occurs using a pneumatic drive.

11. The method according to paragraph 1, characterized in that when removing the binder with water, the parts are placed on perforated trays made of stainless steel and immersed in water at a controlled temperature and time.

12. The method according to paragraph 1, characterized in that during chemical removal of the binder, the parts are placed on perforated stainless steel trays, which are immersed in the solvent at room temperature in boxes, which are placed on shelves with a pneumatic drive for moving the solvent.

13. The method according to paragraph 1, characterized in that the thermal removal of the binder consists of heating the parts in an oven at 300°C.

14. The method according to paragraph 1, characterized in that sintering consists of heating the part in a furnace at 1600°C.