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Grinding HOT MlLL ROLLS

20 pp. (English).
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 Summary

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Grinding HOT MlLL ROLLS

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By E. T. Larson*

Rolls for the hot working of steel in strip, sheet and tin plate mills are invariably made of chilled iron. The sizes usually vary from about 10" to 18" diameter by 12" to 98" length of body.

New, harder types of chilled iron rolls, mostly nickel-chrome alloy, have been developed within the last few years. These range in hardness from 70 to 85 scleroscope and can be reconditioned only by grinding. They pos-

sess the advantage of standing up much longer than the plain chilled iron rolls before requiring regrinding.

Surface and Finish Requirements

These vary somewhat in different plants, depending upon the material to be rolled and the standards of finish set up in the individual plant. Inasmuch as the product from the hot

NICKEL CHILLED IRON ROLL FOR HOT MILL BEING GROUND ON A NORTON MACHINE •Norton Company Sales Engineering Department.


 
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