Ingotless Metal Rolling

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 It might be outdated or ideologically biased.

Ingotless Metal Rolling

 

the production of metal bars, stock, or strip by pouring liquid metal into a gap between horizontal rolling cylinders that are rotating in different directions. It was first achieved in 1855 when a steel sheet 1 mm thick and 1.2 m long was obtained by H. Bessemer’s method. The essence of ingotless metal rolling is the combination of casting, crystallization, and deformation of metal in a single process. The first experimental equipment in the USSR was developed in the Serp i molot metallurgical works in Moscow in 1938. The pouring of the steel, which had been smelted in an electric furnace, was done through a bottom-pour ladle into an intermediate ladle, and then through a casting device to mill rolls 900 mm in diameter with body lengths of 300 or 800 mm, from which a strip 1.5–6 mm thick was obtained.

Ingotless rolling has not become common for either ferrous or nonferrous metals owing to the unsatisfactory surface quality of the strip and a technology that is unacceptable for the industry. Continuous steel casting, which was first perfected in the Soviet Union, has proved to be more satisfactory.

B. G. FASTOVSKII

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