The slurry transported by the Foam Pump(KEXON) is generally slurry with more particles, so it has a high requirement on the abrasion resistance of the foam pump. What material is the sheath of the foam pump made of? The sheath of foam pump is made of high chromium alloy, so why should this material be used for casting? This is because high chromium alloy is the third generation of white cast iron developed after common white cast iron and nickel hard cast iron. Its hardness determines its wear resistance, so it is necessary to use this substance to make the sheath of foam pump.

The specification of this nickel hard cast iron is generally as follows: the chromium content of high chromium white cast iron is more than 11%, and the ratio of chromium to carbon content is between 4 and 8. Under these conditions, M7C3 carbide with high hardness almost completely replaced M3C carbide. M7C3 carbide basically exists as an isolated hollow hexagon, which greatly enhances the continuity of the matrix compared with M3C carbide in a network continuous distribution, thus the toughness of the whole material is significantly improved. At present, high chromium cast iron has been recognized as an excellent wear-resistant material in the world, and is widely used in mining, cement, electric power, road construction machinery, refractory materials, etc. Therefore, high chromium cast iron for the jacket of foam pump can improve the wear resistance of foam pump.

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