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The slurry pump is a pump that conveys a mixture of solids and water. Therefore, the medium will be abrasive to the wet parts of the slurry pumps. So the slurry pump wear parts need to be made in wear-resistant materials.

Commonly, The slurry pumps used in metal materials, Including cast iron, ductile iron, high chromium cast iron, stainless steel duplex stainless steel etc. High chromium cast iron is the third generation of wear-resistant material developed after ordinary white cast iron and nickel hard cast iron. Due to the characteristics of the structure of high chromium cast iron, it has much higher toughness, higher temperature strength, heat resistance, and wear resistance than ordinary cast iron. High chromium cast iron has been praised as the best anti-abrasive material in the contemporary era, and it has been widely used day by day.

China’s national standard for wear-resistant white cast iron (GB/T8263) stipulates the grade, composition, hardness, heat treatment process, and usage characteristics of high chromium white cast iron.

The executive standard for high chromium cast iron in the United States is ASTM A532M, the United Kingdom BS4844, Germany DIN1695, and France NFA32401. Russia developed 12-15% Cr, 3-5.5% Mn and 200mm wall thickness ball mill liners in the former Soviet union      , and now implements the ҐOCT7769 standard.

The main materials used for the wear parts of slurry pumps at home and abroad are stainless steel, high chromium cast iron, and nickel hard cast iron. High chromium cast iron is an ideal candidate material for the flowing parts of slurry pumps. Through the adjustment or selection of carbon and chromium content levels, the best use effects of flowing parts under different industrial and mining conditions can be obtained.

High chromium cast iron is the abbreviation of high chromium white anti-wear cast iron. It is an anti-wear material with excellent performance and special attention; it has much higher wear resistance than alloy steel and much higher toughness and strength than general white cast iron. At the same time, it also has good resistance to high temperature and corrosion, coupled with convenient production and moderate cost, and is known as one of the best anti-abrasive materials in modern times.