A device for improving the resistance of tungsten carbide to knife edge

Abstract

The invention relates to the technical field of hard alloy anti-knife edge, and discloses an improved tungsten carbide anti-knife edge device, which includes a casing, and the inner side walls of the casing are fixedly connected with tooth plates. The surface of the tooth plate is movably connected with a gear, and the surface of the gear is movably connected with a connecting plate. There is a slide rail inside the housing and on the surface of the connecting plate. The bottom of the tooth plate is movably connected with an engaging plate, and the surface of the suction block A spring rod is movably connected, and the end of the spring rod far away from the suction block is movably connected with an air bag, and the inside of the air bag is movably connected with a compression spring, and the end of the compression spring far away from the air bag is movably connected with a pressure plate, and the surface of the pressure plate is movably connected with undulations pole. The deformation of the rear spring rod acts on the surface of the airbag, and the negative pressure space inside the airbag is destroyed to generate a suction force, which will be expressed from the suction block and suck the powder, so the compaction is achieved. When reducing the loss of composite carbide powder effect.

Description

technical field [0001] The invention relates to the technical field of hard alloy anti-knife edge, in particular to an improved tungsten carbide anti-knife edge equipment. Background technique [0002] Cemented carbide is an alloy material made of hard compounds of refractory metals and bonding metals through powder metallurgy; it has a series of properties such as high hardness, wear resistance, good strength and toughness, heat resistance, and corrosion resistance. Excellent properties, especially its high hardness and wear resistance, remain basically unchanged even at a temperature of 500 ° C, and still have high hardness at 1000 ° C, but the existing tungsten carbide has disadvantages Is the ability to resist edge tumor is poor. [0003] In the prior art, compound carbides are added to the alloy for anti-knife edge. Before adding the compound carbides, the compound carbides need to be compacted and carbonized. Because the compound carbides are WC solid solution at high...

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Problems solved by technology

[0002] Cemented carbide is an alloy material made of hard compounds of refractory metals and bonding metals through powder metallurgy; it has a series of properties such as high hardness, wear resistance, good strength and toughness, heat resistance, and corrosion resistance. Excellent properties, especially its high hardness and wear resistance, remain basically unchanged even at a temperature of 500 ° C, and still have high hardness at 1000 ° C, but the existing tungsten carbide has disadvantages is less resistant to knife edge

[0003] In the prior art, compound carbides are added to the alloy for anti-knife edge. Before adding the compound carbides, the compound carbides need to be compacted and carbonized. Because the compound carbides are WC solid solution at high temperature The solid solution obtained by dissolving WC in TiC or WC in TiC-TaC (NbC) will have a large amount of dust floating in the air when it is compacted, and the compacted composite carbide has a certain temperature. Taking it out will increase the risk of workers' work and is not easy to use. Therefore, an improved tungsten carbide anti-knife edge equipment came into being.

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