Melting furnace capable of isolating air in casting stage

Abstract

The invention discloses a melting furnace capable of isolating air during the casting stage, comprising a furnace shell, a furnace inner shell is arranged inside the furnace shell, the inner space of the furnace inner shell forms a melting chamber, and a feeding pipe is arranged above the furnace shell. The feeding pipe runs through the furnace shell and communicates with the melting chamber. A discharge pipe is arranged inside the furnace inner shell, and a casting box is also included. The discharge pipe communicates with the melting chamber and the casting box. The air pipe, wherein the exhaust pipe is connected with the casting box and the external space, the gas delivery pipe is connected with the casting box and the melting chamber, an air inlet pipe is arranged on the furnace shell, and the air inlet pipe is connected with the external space and the melting chamber, and a Electric heating layer. The invention prevents castings from being in contact with air during melting and casting by setting protective gas and casting boxes, and solves the problem of low casting quality caused by castings being oxidized and in contact with water vapor.

Description

technical field [0001] The invention relates to a metallurgical device, in particular to a melting furnace capable of isolating air during the casting stage. Background technique [0002] As objects that people often come into contact with in daily life, doors and windows not only play the role of shelter from wind and rain, heat insulation, sound insulation, lighting, ventilation, etc., but also an important part of architectural modeling. Their shape, size, color, shape, etc. It has a very important influence on the overall shape of the building. With the improvement of people's living standards, people's demand for doors and windows is increasing, and the requirements for doors and windows are becoming more and more diverse. [0003] Aluminum alloy doors and windows are an important branch of doors and windows. Aluminum alloy doors and windows refer to doors and windows made of aluminum alloy extruded profiles as frames, stiles, and fan materials. Aluminum alloy doors a...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a melting furnace capable of isolating air during the casting stage in view of the shortcomings of traditional melting furnaces, so as to solve the problem of low casting quality caused by the contact between molten metal and air in the process of melting and casting in traditional melting furnaces The problem

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