Milling Rolls

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Milling Rolls

 

the basic operating member of rolling machines. They may be solid or hollow, smooth (with a microscopically rough surface) or threaded (with grooves inclined at a slight angle to the generatrix of the cylinder). The rolls generally used for mills are solid and are made of chromium-nickel cast iron that is cast in an iron mold with short press-fitted shafts. Such rolls require static balancing but are very massive; hollow milling rolls must be dynamically balanced (which is more complicated), but their construction permits the use of water cooling, which lowers the surface temperature of the rolls and, to a small extent, of the milled product. The fundamental requirements for milling rolls are high stiffness and an exact geometric shape. The surface Brinell hardness of smooth milling rolls is 320-350, and of grooved rolls, 400-500.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.