Differential pressure casting machine and casting method

Abstract

The invention discloses a differential pressure casting machine and a casting method. The differential pressure casting machine comprises a base seat plate, wherein a fixing die plate mechanism is arranged on the upper end face of the base seat plate, a lower die and a lower die cover are arranged in the middle of the upper end face of the base seat plate, the lower die cover wraps the outer side of the lower die, an upper die and an upper die cover are respectively arranged on corresponding positions right above the lower die and the lower die cover, the upper die cover wraps the outer side of the upper die, the upper die and the upper die cover are connected with a moving die mechanism through a moving die plate, the moving die mechanism is connected with the fixing die plate mechanism and moves up and down along the fixing die plate mechanism, a heat preserving furnace is arranged below the base seat plate, a heat preserving furnace driving mechanism is arranged in the heat preserving furnace, the heat preserving furnace driving mechanism is connected with the base seat plate through a support, and a liquid rising tube is located below the base seat plate and connected with the heat preserving furnace. The differential pressure casting machine can obtain the best die filling speed, can obtain the best filling metal liquid, can prevent entering of outer slag inclusion, and can obtain castings which are compact in texture, few in casting defect and excellent in performance.

Description

Technical field: [0001] The invention relates to the technical field of metal casting equipment, in particular to an aluminum alloy differential pressure casting device and method. Background technique: [0002] At present, the aluminum alloy casting equipment commonly used in our daily production includes low-pressure casting machines, gravity casting machines, high-pressure casting machines, etc., all of which have defects such as slow solidification speed, large grain size, and low density. Thin-walled aluminum alloy castings. Differential pressure casting is a casting process method of filling under pressure and solidification and crystallization. This process combines "controllable speed filling" and "pressure crystallization" to obtain the best filling speed and the highest quality filling The molten metal endows the product with a structure and performance different from that of metal mold casting and low-pressure casting products. Invention content: [0003] The ...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a differential pressure casting machine and a casting method that can cast a dense structure in view of the limited improvement of the casting density and internal quality of the existing casting technology, which is difficult to meet the shortage of complex and thin-walled castings. , Castings with less casting defects and excellent performance

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