Friction Hammer

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 It might be outdated or ideologically biased.

Friction Hammer

 

a mechanical hammer in which the hammer head is raised by friction. It is used for hot closed impression die forging, coining, straightening, and other operations. Production of friction hammers has virtually ceased, because of the low productivity afforded (30–50 blows per min).

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