hotmill rolls change

Rolling (metalworking)

In metalworking, rolling is a metal forming process in which metal stock is passed through one or more pairs of rolls to reduce the thickness and to make the thickness uniform The concept is similar to the rolling of doughRolling is classified according to the temperature of the metal rolled If the temperature of the metal is above its recrystallization temperature, then the process is ....

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ROLLS FOR ROLLING MILLS

Rolls are the primary tool for shaping the material, setting the roll final dimensions, surface finish and mechanical properti Depending on the service conditions, the strength of backup rolls is achieved thanks to complex alloying using chromium, molybdenum, vanadium, etc The roll metal quality is inspected by means of ultrasonic flaw ....

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Hot & Cold Working and the Rolling Process

Hot & Cold Working and the Rolling Process , Smaller work rolls are more prone to greater bending under high roll-separating forces from the vertical stresses induced by the workpiece As such, back-up rolls are often used to counter this phenomenon Another method to reduce or eliminate elastic roll deflection is to use materials of high ....

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ROLLING MILL EQUIPMENT

Typical upgrades to hot mill stands include the addition of roll bending for profile and shape control as well as the installation of hydraulic roll force systems for automatic gauge control Customers are also looking to see production improvements by eliminating mill down time through shorter roll chang...

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Roll changing device for rolling mill

Mar 13, 1984· The change of rolls in this type of rolling mill has been hitherto achieved by means of a complicated roll changing device having roll changing rails for respective rolls and mounted in a housing, and delivery rails disposed at the front side of the mill at the same level as respective roll changing rails and in alignment with the latter ....

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