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How does CHAENG choose the material of the large casting girth gear

26 Nov 2020 UTC+8Views:

In the "Grinding - Calcination -Grinding" cement production line, the three core equipment "mill-kiln-mill" all require the component girth gears, so the quality of the girth gear is directly related to the normal operation of the entire production line. The quality of the girth gear is mainly related to the selection of the material and its heat treatment process.

CHAENG casting girth gear

According to the experience of CHAENG for many years, the girth gear requires the tooth surface to have high hardness and wear resistance, and the tooth core to have sufficient toughness. The girth gear with complex shape and large diameter usually uses carbon steel and alloy steel with a carbon content of about 1.4% to ensure quality, so ZG35Mn, ZG35CrMo, and ZG42CrMo are mostly used as casting materials. The following is the composition of ZG35Mn, ZG35CrMo, and ZG42CrMo:

 CHAENG casting girth gear material

The following is a comparison of the mechanical properties of ZG35Mn, ZG35CrMo, and ZG42 CrMo:

girth gear material

girth gear material

Comprehensive analysis shows that ZG35Mn repair welding performance is good, ZG35CrMo is resistant to corrosion and high temperature, and ZG42 CrMo has good hardness and wear resistance.

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