Tungsten Carbide Nozzle Deep Cryogenic Technology III

Tungsten carbide nozzle is mainly composed of WC hard phase and Co binder phase. It is essential that hard phase ensure the high hardness, toughness and good heat resistance. While the binder phase has a polymorph characteristic, and usually plays a very important role in physical and chemical action in cemented carbide sintering process. X-ray diffraction analysis showed that the grain within tungsten carbide has structural change and increases the number of sub-grain boundaries per unit volume.

The sub-grain boundary structure is unique, which will enhance the shear stress plastic deformation resistance of the alloy so that the plastic deformation of tungsten carbide becomes difficult. Therefore, changes in internal microstructure reflected in the macroscopic properties change is to improve the ability of anti-abrasion synthetic polymers as well as its own resistance to abrasion, erosion resistance and service life have been significantly extended.
















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