Hardness testing of spun cast high chrome iron roll

Spun Cast High Chrome Iron Rolls :

These rolls are suitable for use at early finishing stands of Hot Strip Mills. It gives very high resistance to abrasion and wear coupled with high degree of resistance to thermal fatigue. The shell matrix consists of complex carbides in martensitic matrix without graphite. Mechanical strength of shell metal is enhanced through special heat treatment cycles and thus the hardness drop in the shell layer is practically negligible. There are numerous benefits of using these rolls, it improves resistance to crack initiation and propagation, it gives tolerance to mills conditions, the hardness throughout the working life is uniform, thus ensuring roll gap profile consistency and complete flexibility during operations.

Application: These rolls are used as work rolls in the front finishing stands of Hot Strip Mills and work Rolls for Heavy Plate Mills.

 

                 
Core microstructure Showing a pearlitic matrix 
with nodular & distributed graphite.
Magnification : 500X

Shell microstructure consisting of hard chrome carbides 
in complex tempered martensitic matrix. 
Magnificatin : 100X

open die forgings  II  sleeves or ring rolls  II  alloy cast steel rolls  II  graphite steel rolls  II  spheroidal graphite (nodular) cast iron
indefinite chill alloy cast iron  II  double poured alloy indefinite chill  II spun cast special carbide enhanced indefinite chill rolls
alloy steel base rolls / adamite  II  spun cast high chrome iron rolls  II  spun cast alloy indefinite chill rolls

Japanese       Chinese       Russian       French       Spanish       German       Italian       Portugues

II home  II  about us  II  achievements  II  production-facilities  II  group of companies  II   product range  II  contact us  II   feedback  II  email  II