Primetals Technologies Germany Gmbh

Morgan Construction Company

Primetals Technologies USA LLC

Paul Barry Riches

Yun Ling

T Michael Shore

Melicher Puchovsky

Ruth Kirkwood Azmat

Mateusz Wojtaszek

Cristiano Justen

Matthew D Palfreman

Steven Morgan

A locating system that performs a locating method for locating a flame-cut billet in a stack of flame-cut billets that includes an imager that obtains an image of an end surface of a billet, a classifier that classifies the image of the end surface, and a matcher that matches the classified image of the end surface with a classified image from among a plurality of classified images stored in a classified image storage.

Locating method and a locator system for locating a billet in a stack of billets

A pinch roll delivers a respective rolled product. A control device opens the pinch roll at a respective trigger time and at a respective transport speed of the respective rolled product. The control device determines the respective trigger time and/or the respective transport speed using a model that depends on a coefficient of friction. After opening the pinch roll, a measuring device detects iteratively a position or a derivation in time of the position of the respective rolled product. The detected positions or the detected derivations in time of the position are provided to the control device. The control device in dependency on the positions or the derivations in time of the position updates the coefficient of friction and uses the updated coefficient of friction for determining the respective trigger time and/or the respective transport speed for the next rolled product delivered by the pinch roll.

Sliding transport of rolled product with adaptation of friction

During rolling of front sections of rolling material in a rear group of roll stands of a rolling mill, rear sections of the rolling material are rolled in the front group of roll stands. A run-out speed with which the rolling material is exiting the front group of roll stands is detected. A run-in speed with which the rolling material is entering the rear group of roll stands is detected. A rolling speed with which the rear group of roll stands is driven is controlled by a controller such that a relation of the run-in speed to the run-out speed equals a predetermined value. The predetermined value is kept constant until a time point at which a tail end of the rolling material reaches a predetermined location upstream of the front group of roll stands, and is changed according to a predetermined function after the time point.

Rolling of rolling material with tension change at the rolling of the tail end of the rolling material

A billet () is rolled to a rod () in a rolling mill. The rod () exits the rolling mill with a finishing temperature (TE). A rear laser measurement device () arranged downstream of the rolling mill detects the head end and the speed (v) of the rod (). The detected speed (v) of the rod () is integrated to its length and an instantaneous length (L) of the rod () is determined. Dependent on the determined instantaneous length (L) of the rod (), cutting commands (S) to a rear shears () arranged downstream of the rolling mill are provided for cutting the rod () in sections () of predetermined length (L). The sections () of the rod () are cooled down in a cooling bed ().

Rolling mill with optimized determination of cutting points

A system for maintaining a continuous speed in a long rolling mill is provided that includes a plurality of guide rollers that feed a billet product from a caster to an entry roll stand along a mill pass line to an exit roll stand. Also, the system includes a plurality of gauges positioned at a plurality of locations along the mill pass line, the gauges perform speed measurement of the billet product passing along the guide rollers. Furthermore, the system includes a logic controller that receives the speed measurement and maintains a speed relationship where the speed between the caster and the entry roll stand is constant as well as the exit speed of the end roll stand is also constant.

Dual cascade control system for a long rolling mill

A pinch roll unit for either propelling or retarding a product moving along the pass line of a rolling mill comprises a pair of levers mounted for rotation about parallel first axes. Roll shafts are carried by the levers with each roll shaft being journalled for rotation about a second axis parallel to the first axis of its respective lever. Pinch rolls are carried by the roll shafts and are positioned to define a gap therebetween for receiving the product. An electrically powered first motor operates via a linkage to rotate the levers about the first axes and to move the pinch rolls between open positions spaced from the product, and closed positions contacting and gripping the product therebetween. An electrically powered second motor rotatably drives the pinch rolls.

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Paxton, MA, United States of America

Paul Barry Riches