British Steel Plc.

David E Beard

Ronald F Dewsnap

Andrew D Higgins

A steel rod or bar comprises an outer surface layer of ferrite-pearlite type structure, an annulus immediately below said surface layer having an acicular micro-structure comprising martensite and/or bainite and a core of bainite or martensite or ferrite and carbides or a combination of two or more of these constituents.

Hot bar cooling

A method of quenching rod, billet or bar stock as it leaves a hot mill comprises passing the stock through one or more open ended troughs into which water is fed under pressure through vertical slots in the side walls of the trough to provide an agitated bath of water through which the rod, billet or bar travels and is thereby cooled. Sets of angled slots in one end of each trough act to control the flow of water from the trough and to strip cooling water from the stock.

Cooling method for metal articles

A water cooling system for quenching rod, billet or bar typically as it leaves a hot mill. The system comprises one or more open ended troughs into which water is fed under pressure through vertical slots in the walls of the trough to provide an agitated bath of water through which the rod, billet or bar travels and is thereby cooled. Sets of angled slots in one end of each trough act to control the flow of water from the trough.

Growing community of inventors

Sheffield, United Kingdom

David E Beard