Davy-loewy Limited

Davy Mckee (sheffield) Limited

Davy Mckee Corporation

Davy Distington Limited

Thomas Hope

Kenneth T Lawson

Robert M Perry

Timothy Reynolds

John C Dobson

Ewan C Hewitt

The manufacture of thin metal slab

A multi-stand hot strip rolling mill has a pinch roll assembly downstream of the last stand and before the coiler and a shapemeter roll is located between the last stand and the pinch roll assembly so as to engage with the strip.

Hot strip mill

Apparatus for supplying a coherent curtain of cooling liquid comprises a generally rectangular nozzle with an inlet and an outlet, the nozzle being divided into a multiplicity of individual passages extending in the direction between the inlet and the outlet, a header for introducing liquid coolant to the inlet of the nozzle and a slider displaceable beneath the passages to close off those above the slider and a body carried at the inwards end of the slider providing further passages constituting extensions to those above them and the outer ones of the further passages are inclined outwardly to cause the curtain to diverge as it leaves the nozzle.

Cooling apparatus

For performing interstand cooling in a tandem rolling mill, at least one of the stands (12, 13) has delivery guides (17, 18) which incorporate equipment for delivering coherent, non-turbulent, curtains of coolant on to the faces of the strip rolled by that stand. The equipment for each guide (17, 18) consists of a coolant manifold (25, 32) formed within the guide structure and a communicating curtain-discharging nozzle (30, 36) which is recessed in the guide plate (21, 22) and which extends over almost the entire length of the guide. The manifold (25, 32) is supplied with coolant through pipes (26).

Strip cooling

A multi-stand rolling mill is operated so that strip of suitable shape and metallurgical properties is produced at a faster speed than possible heretofore by threading the mill at a relatively slow speed and adjusting the rolling loads on the stands to give the required output gauge and rolling temperature at the last stand, thereafter the mill is accelerated and curtains of liquid coolant are applied to the workpiece at one or more interstand locations to ensure that the rolling loads remain substantially the same as when threading and the rolling temperature of the last stand remains substantially constant.

Growing community of inventors

Doncaster, United Kingdom

Thomas Hope