A device for rapidly drying hard alloy formed products

Abstract

The invention discloses a device used for rapidly drying a product formed through hard alloy. The device comprises a furnace body. The wall of the furnace body is provided with a water bath cavity. The water bath cavity is connected with a hot water tank through a water pump. Thermocouples are installed on the left portion, the middle and the right portion of the bottom of an inner cavity of the furnace body correspondingly and are connected with three temperature displayers on the furnace body in a one-to-one correspondence mode. A pressure gage used for testing the pressure value of the inner cavity of the furnace body is further installed on the furnace body. The furnace body is further provided with a first opening. The first opening is connected with a rotary vane pump through a pressure adjusting switch so that the pressure of the inner cavity of the furnace body can be adjusted through the pressure adjusting switch. According to the device used for rapidly drying the product formed through the hard alloy, the temperature and the pressure of the furnace body are monitored, and the temperature condition and the pressure condition of forming agent volatilization are combined; the pressure in a drying furnace is controlled through the opening degree of a valve and can be controlled in different temperature stages of drying; and accordingly, the volatilization speed of a forming agent is controlled, and then the purpose of rapidly drying the product (that is, an extrusion billet produced through hard alloy extrusion forming) formed through the hard alloy is achieved.

Description

technical field [0001] The invention relates to the technical field of hard alloy processing, in particular to a device for rapidly drying hard alloy formed products. Background technique [0002] Cemented carbide is an alloy material made of hard compounds of refractory metals and bonding metals through powder metallurgy. Cemented carbide has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance and corrosion resistance, especially its high hardness and wear resistance, which basically remain unchanged even at a temperature of 500°C , It still has high hardness at 1000 °C. Cemented carbide is widely used as tool material, such as turning tools, milling cutters, planers, drills, boring tools, etc., for cutting cast iron, non-ferrous metals, plastics, chemical fibers, graphite, glass, stone and ordinary steel, and can also be used for cutting Difficult-to-machine materials such as stainless steel, high-temperat...

AI Technical Summary

Problems solved by technology

The compacts produced by the existing cemented carbide extrusion molding (that is, cemented carbide formed products) are mostly dried in the shade, and usually the drying time is longer; some manufacturers also use drying devices to dry the compacts produced by cemented carbide extrusion molding. For drying treatment, the device used for drying cemented carbide molded products in the prior art usually adopts hot air drying, that is, the way of sending hot air into the furnace body is used for drying treatment. The existing drying equipment is simply Heating and vacuuming did not control the pressure in the furnace well, causing the surface forming agent to volatilize first, and the core forming agent has not diffused to the surface of the product, and the surface has shrunk slightly. In order to avoid product cracks, the only way to reduce the drying speed , which causes the disadvantage of longer drying time, for example, it usually takes 6 days to dry a D20mm solid rod

Images