الوصف

High Speed Steel rolls(HSS rolls) are composed of high alloy and high carbon HSS outer sheel with either a forged steel or nodular iron core.This type of molten metal for HSS rolls is poured along the core material continuously or spun cast,High Speed Steel Rolls provides excellent hardness,wear resistance,and high temperature properties.

The advantages of these high-speed rolls are:
1.The high-carbon,high-alloy outer shell has high hardness at high temperatures,providing excellent wear resistance.
2.The outer shell has a fine microstructure without gravity segregation due to its special casting method.
3.The boundary between the outer shell and core is combined by metallic diffusion.
Chemical Composition (% wt)
Carbon (C): 1.5 - 3.5
Silica (Si): 0.3 - 3.0
Maganese (Mn): 0.3 - 1.5
Nickel (Ni): <5
Chromium (Cr): 2.0 - 7.0
Molybdenum (Mo): <9
Tungsten (W): <*0
Vanadium (V) 3.0 - *5.0
Cobalt (Co) <*0