open-hearth process

American  

noun

1. a process of steelmaking in which the charge is laid in a furnace open-hearth furnace on a shallow hearth and heated directly by burning gas as well as radiatively by the furnace walls.

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open-hearth process British  

noun

1. a process for making steel using an open-hearth furnace

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Etymology

Origin of open-hearth process

First recorded in 1885–90

Example Sentences

Bessemer's relation to the open-hearth process was very much like Kelly's to the Bessemer process....

From Project Gutenberg

Even paper-bagging does not quite match the open-hearth process, though there is the same secret of superiority, namely, cooking things in their own essence by the agency of hot air.

From Project Gutenberg

These steels are manufactured very largely by the open-hearth process, although chromium steels are also a crucible product.

From Project Gutenberg

Contemporaneous with his development of the open-hearth process, William Siemens introduced the rotary furnace for producing wrought-iron direct from the ore without the need of puddling.

From Project Gutenberg