Tungsten Carbide Wear Plate (2/2)

Tungsten carbide wear plate has high hardness, strength and excellent wear resistance, which is a kind of ideal material for glass plate. Now gate valve and S-shaped valve used more, and S-shaped valve has many advantages, such as high efficiency of reversal, no segregation of concrete, concrete pressure low loss, not easily plugged and son on. S tube floating cutting ring so fast swing plate produced both wear glasses, but also to withstand the impact force generated by S tube cutting stone, which makes the advantages of carbide are fully reflected.

Generally, the medium of S-shaped valve is concrete, which is composed of cement, water, fine coarse aggregate and other additives and the hardness index converted to a Rockwell hardness of between about HRC40-50. Therefore, the main wear patterns can be divided into two types, one is in the process of cutting ring reversal, wear plate and floating cutting ring contacts and has grain wear and erosion; the other is in the process of inhaling or pumping, the internal hole of wear plate has low stress wear and erosion.

Finally, we compare with different wear materials of wear plate, which can be specifically divided into surfacing, inlaying and integrated. Because the surface of the plate glasses usually the first began to wear also wear the most serious, except tungsten carbide, in the actual production manufacture excellent toughness, hardness and wear resistance of metal material is a certain difficulty.

So Researchers consider friction wear resistance, based on a working section surfacing wear-resistant materials, such as steel, tungsten, chromium and molybdenum, graphite electrodes, etc; inlaying materials using tungsten carbide sheet, the hardness of HRC70 or more carbide welded sheet or embedded in the ordinary steel plate, significantly increases the friction wear resistance, flexural strength was also big margin improvement, and chipping off the block does not occur, the service life reaches 30,000m², production has become the main development direction of wear plate; integrated material includes high manganese steel, alloy tool steel, cast iron. But austenitic high manganese steel can not fully meet the requirements of wear resistance, alloy tool steel with high hardness after quenching, low cost, a shorter service life, and cast iron has lower thermal conductivity, plasticity and easily to crack.

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