High Chromium Cast Iron Rolls(HCI Rolls)

the main feature of High Chromium Cast Iron Rolls (HCI Rolls):

There is a content of 14-20% chromium and other high alloy elements in the work layer, the carbide in the microstructure of the shell is M7C3 and high-strength nodular cast iron in the core. Due to the function of large amount of chromium, during the rolls application, a compact chromium oxide film forms on the roll surface. After special heat treatment, such rolls have excellent wear resistance.

High Chromium Cast Iron’s Carbide in the microstructure:

(This carbide is a typical Chrysanthemum, which has great wear resistance. High Chromium Cast Iron Rolls has excellent wear resistance and mechanical property.)

Chemical composition (%):

Application scope:

1. Bar & wire rod mill finishing stand work roll.

2. Hot strip roughing stand & finishing stand work roll. 

Microstructure and properties:

Application:

1. Pre-slit & Slit rolling stands of Bar mills.

2. Roughing stand and Early finishing stands of Hot Strip Mill.