Vertical smelting furnace for continuously casting tungsten carbide

Abstract

The invention relates to a vertical smelting furnace for continuously casting tungsten carbide, which is of a vertical structure and consists three parts, namely a feeding part, a heating part and a cooling part, wherein the feeding part is used for providing a mixture of tungsten powders and tungsten carbide powders for the heating part; an inner step is arranged in a heating pipe of the heatingpart; a graphite funnel is arranged on the inner step and is provided with a lining with exhaust holes; the mixture is heated in the funnel to form a cast tungsten carbide solution in a WC+W2C eutectic structure, and the solution continuously drops to the cooling part; the cooling part is of a double-cooling structure consisting of a cooling air pipe and a bucket-type water cooling jacket or is in a direct water cooling structure; and the cooling part is used for quickly cooling the solution dropping from the heating part to a process temperature and conveying the solution outside the furnace. The smelting furnace has the advantages of high cooling speed, low degree of oxidation for materials, low energy consumption, high yield and continuous production and operation. In addition, the graphite funnel is provided with the lining with the exhaust holes, so that the heating pipe is prevented from being adhered with the graphite funnel, and the graphite funnel is convenient to be disassembled from the heating pipe.

Description

technical field [0001] The invention relates to a vertical cast tungsten carbide continuous smelting furnace, in particular to a vertical cast tungsten carbide continuous smelting furnace which can realize continuous production of cast tungsten carbide in the cemented carbide industry. technical background [0002] At present, the cemented carbide industry generally uses horizontal carbon tube furnaces in the production of cast tungsten carbide. The mixture of tungsten powder and tungsten carbide powder is packed in a boat, and the boat is placed in a horizontal furnace by heating one boat at a time. In the type carbon tube furnace, the mixture is heated to a liquid state to form a cast tungsten carbide solution, and then the boat is pushed out of the furnace, and the operator pours the high temperature cast tungsten carbide solution of about 2800 degrees into the cooling container in the atmospheric environment , after cooling, cast tungsten carbide products are obtained. ...

AI Technical Summary

Problems solved by technology

Obviously, this intermittent heating and pouring outside the furnace has disadvantages such as poor working conditions and serious oxidation of materials.

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