Annular cooling system of differential pressure casting machine

Abstract

The invention discloses an annular cooling system of a differential pressure casting machine. The annular cooling system comprises a high-pressure compressed gas source, a water source, a cooling water pipe, a cooling air pipe, double-fluid atomization nozzles and a ring pipe. The cooling water pipe is connected with the water source, the cooling air pipe is connected with the compressed gas source, and the cooling water pipe and the cooling air pipe are connected with the double-fluid atomization nozzles on the other side. The double-fluid atomization nozzles are connected into the atomization ring pipe arranged around a die. A circular seam aligned with the die hot joint position is arranged on the inner side of the ring pipe. Every two double-fluid atomization nozzles are arranged in acrossed manner relative to the atomization ring pipe, and a certain included angle is formed between every two double-fluid atomization nozzles. Each set of double-fluid atomization nozzles spray water mist in an obliquely-opposite manner, after the water mist enters the atomization ring pipe, is in mutual collision and is crossed in the pipe, water mist is sprayed out of the inner side circular seam of the atomization ring pipe, annular spray mist is formed and is sprayed to the die, and uniform cooling is conducted.

Description

technical field

[0001] The invention belongs to the technical field of casting equipment, and in particular relates to an annular cooling system of a differential pressure casting machine and a differential pressure casting machine equipped with the system. Background technique

[0002] The differential pressure casting method is a new casting method developed in the early 1960s, which has the advantages of both low pressure casting and pressure kettle casting. It has very obvious advantages in the production of large, complex, thin-walled, precise, high-quality high-strength light alloy castings. Differential pressure casting is based on low-pressure casting equipment. A sealed cover is added to the casting mold, and the cover is filled with compressed gas, so that the casting mold is under a certain pressure of the gas. When the molten metal is filled, the pressure of the gas in the holding furnace is greater than the pressure of the gas in the mold, and the filling, pres...

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