Back-up Roll 1.NDT as per international standard 2.Sufficient processing skill and experience 3.Forged support roller shaft

                                                       Back-up Roll

Specification: diameter 60---1500; length≤9000; weight≤50T

Material: 70Cr3MoR,9Cr2MoR,86CrMoV7,MC3,MC5

Barrel hardness: HSD75----90 (higher hardness)

Barrel hardness evenness: ≤3HSD

Hardness depth (one side) 15---100mm

Used for: cold rolling mill

Manufacturing process: ingot-forging-UT-rough machining-UT-QT-2th rough machining-UT

-magnetic particle test-quenching-magnetic particle test-finished machining-UT

-magnetic particle test-oiling-packing-shiping

Back-up Roll