MFE 201 Lecture Notes - Lecture 6: Mannesmann, Continuous Casting, Proper Length
31 Mar 2016
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Document Summary
This gure shows the di erent products that are produced by rolling starting from slabs, billets, or blooms obtained from continuous casting. Metal is passed between two rollers that are spaced apart less than the thickness of the part. The part is deformed into that thickness, though it springs back a tiny amount after exiting the rolls. The gure is an example of hot rolling. The grains are deformed and lled with dislocations which react to the elevated temperature of the workpiece and form new grains. Roll bending occurs due to the forces exerted against the rolls by the workpiece. This force pushes the rolls outward and produces the de ection shown in the top left. One solution is to barrel the rolls so they have a. At surface when they are de ected as shown. The other method is to provide backing rolls that push the two working rolls to keep their shape.
