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JSW's Back-up Rolls for Hot & Cold strip Mills
Since 1965, 3% Cr-Mo steel had been used widely. The advantageous property of the material was superior crack resistance. However, wear resistance was inferior, due to low hardness. (Max. Hs 65)
Afterward, JSW developed high hardness material of 5%Cr-Mo steel to improve wear resistance. The hardness level exceeded to Hs 70 and wear resistance was improved greatly.
On the other hand, JSW also developed new alloy design into strengthened matrix structure with few carbide. That is 3.5% Cr-Mo steel (our brand name is ART) which has a good combination of wear resistance and rolling trouble resistance.
The performance of ART shows equivalent performance as the 5% Cr-Mo steel in actual usage. JSW has numbers of supply experience of ART as well as the 5% Cr-Mo steel.
More than 1,260 pieces of ART back up rolls have already been delivered so far. As you can see, JSW is always ready to supply back up rolls that meet any customers’ demands.