Highly turbocharged low pressure die casting machine

Abstract

The invention relates to a highly turbocharged low pressure die casting machine, comprising a pouring layer (1), a thermal insulation layer (2), a case (3), a heating rod (4) and air inlet / exhaust holes (5), wherein the upper part of the hearth is provided with the heating rod (4), the lower part is provided with the pouring layer (1) and the thermal insulation layer (2). The highly turbocharged low pressure die casting machine is characterized in that the two sides of the upper part of the hearth are provided with the air inlet / exhaust holes (5). In the structure in the invention, the pouring layer is directly contacted and sealed with the case of a furnace in a filling way, thus high pressure gas can not enter into the thermal insulation layer and the pouring layer is protected. The air inlet / exhaust holes are arranged in heating tanks at the two sides, air is introduced / exhausted at the two sides simultaneously, the speed for introducing / exhausting the air can meet the requirement of mould filling during high pressure casting, structure compactness of a casting is good, and the strength and elongation percentage can meet product requirements.

Description

technical field [0001] The invention belongs to the technical field of metal casting equipment, relates to a low-pressure casting machine, and in particular relates to transforming a low-pressure casting machine into a high-pressure casting machine. Background technique [0002] With the rapid development of my country's automobile industry, in order to meet the lightweight of auto parts, a large number of alloy wheels, engine block, cylinder head, gearbox body or other parts are produced by low-pressure casting technology. In other fields, such as aviation, textile machinery, etc., low-pressure castings are gradually being used to improve product quality, reduce cutting processing, and reduce equipment weight. Low-pressure casting is a casting method in which liquid metal completes the process of filling the cavity and solidifying under pressure to obtain castings. Because the pressure used is low (20-60kPa), it is called low-pressure casting. However, some castings have ...

AI Technical Summary

Problems solved by technology

However, some castings have high internal quality requirements, and they hope to crystallize under higher pressure. The greater the crystallization pressure, the better the feeding effect, and the denser the final casting structure, and the strength and elongation of the casting can be greatly improved. However, it is not possible to improve the quality of castings by increasing the pressure through crystallization. It puts forward very high requirements for the structure of the holding furnace of the casting machine and the electrical control part, and corresponding measures must be taken to achieve high-pressure casting. Purpose

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