Pneumatic control device of large vacuum pressurization casting equipment and using method of pneumatic control device

Abstract

The invention discloses a pneumatic control device for large vacuum pressurization casting equipment and a using method thereof.The pneumatic control device comprises an assembling main plate, a pneumatic punching mechanism, a cooling mechanism and a lifting mechanism are fixedly installed at the top of the assembling main plate, and a vibration generating mechanism is fixedly installed at the output end of the pneumatic punching mechanism; after the vibration effect in the casting and pressing head is continuously conducted into the liquid raw material, the movement rate of the liquid raw material in the mold is increased, bubbles generated in the liquid raw material are extruded, and the liquid raw material has upward impact potential energy along with continuous intensification of the vibration effect on the surface of the casting and pressing head; at the moment, bubbles in the liquid raw material can gradually flow to the surface of the liquid raw material under the extrusion effect, the bubbles are broken after being in contact with air and volatilize into the mold, the situation that many hollow areas are generated in a workpiece after the liquid raw material is cooled due to many bubbles in the liquid raw material is prevented, and the delivery quality of the formed workpiece is improved.

Description

technical field [0001] The invention relates to the technical field of air-controlled casting design equipment, in particular to an air-controlled device for large-scale vacuum pressurized casting equipment and a method for using the same. Background technique [0002] Die casting refers to a casting method in which molten or semi-molten metal is injected into a metal mold at high speed and crystallized under pressure, referred to as die casting. Die casting is a kind of liquid or semi-solid metal or alloy, or containing reinforced The liquid metal or alloy in the physical phase is filled into the cavity of the die-casting mold at a high speed under high pressure, and the metal or alloy is solidified under pressure to form a casting method. The commonly used pressure in die-casting is 4-500MPa. The metal filling speed is 0.5-120m / s. Therefore, high pressure and high speed are the fundamental difference between the die casting method and other casting methods, and they are al...

AI Technical Summary

Problems solved by technology

In the process of die casting workpieces, the liquid metal material is first poured into the mold, and then the mold head is quickly pressed down into the mold through the pneumatic components. At a certain height, when the liquid metal falls again, part of the air in the mold will be mixed into the liquid material, causing a large number of air bubbles in the liquid metal after production. The miscellaneous air is effectively removed, resulting in more hollow areas inside the workpiece after cooling and forming of the later cast workpiece

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