High-chromium cast iron is the abbreviation of high-chromium white wear-resistant cast iron, which is a kind of wear-resistant material with excellent performance and has attracted special attention. It has much higher wear resistance than alloy steel, much higher toughness and strength than ordinary white cast iron, good high temperature resistance and corrosion resistance, convenient production and moderate cost, and is regarded as one of the best abrasive wear-resistant materials in the contemporary era.
High-chromium cast iron is an important branch of wear-resistant metal materials and wear-resistant cast iron. It is the third generation of white cast iron developed after ordinary white cast iron and nickel hard cast iron. The first patent of high chromium cast iron appeared as early as 1917. High chromium cast iron generally refers to alloy white cast iron with Cr content of 11-3% and C content of 2.-3.6%.
difference:
Cr12 is steel with poor impact toughness.
high chromium cast iron, not steel, contains 11-3% Cr.
they also have different functions. Cr12 is die steel. High chromium cast iron is widely used in mining, cement, electric power, road construction machinery, refractories, etc., and is commonly used in lining plates, hammers and grinding balls. Since 198s, it has been widely used in the manufacture of the chamber of shot blasting machine and the blades and linings of shot blasting machine, which can effectively prevent high-speed and dense shot beams from penetrating the steel plate shell.