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Metallurgy
Metal works and production.
Industry: Metals; Materials science
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Metallurgy
open-hearth process
Metals; Metallurgy
Process of making steel by heating the metal in the hearth of a regenerative furnace. In the basic open-hearth steel process, the lining of the hearth is basic, usually magnesite; whereas in the acid ...
open surface
Metals; Metallurgy
Rough surface on black plate, sheet or strip, resulting from imperfection in the original steel bars from which the plate was rolled.
open-hearth furnace
Metals; Metallurgy
A reverberatory melting furnace with a shallow hearth and a low roof. The flame passes over the charge in the hearth, causing the charge to be heated both by direct flame and radiation from the roof ...
olsen test
Metals; Metallurgy
A method of measuring the ductility and drawing properties of strip or sheet metal which involves determination of the width and depth of impression. The test simulating a deep drawing operation is ...
number as pertaining to hardness
Metals; Metallurgy
In copper base alloys inductry; temper is referred to as so many numbers hard, i.e. Yellow Brass Half Hard is termed 2 numbers hard. This term is derived from terminology used on the mill gloor where ...
oil-hardening steel
Metals; Metallurgy
Steel adaptable to hardening by heat treatment and quenching in oil.
oil hardening
Metals; Metallurgy
A process of hardening a ferrous alloy of suitable composition by heating within or above the transformation range and quenching in oil.