Aga Aktiebolag

Aga Ab

Avestapolarit Ab

Avesta Sheffield Aktiebolag

Avestapolarit Ab (publ)

Avesta Sheffield

Avesta Sheffield Aktiebdag (publ)

Outokumpu Oyj

Sten Ljungars

Mats Gartz

Lars Folke Saltin

Sten-ANGke Brannvall

Carl-Lennart Axelsson

Sven-Eric Lunner

Christer Herre

A method and apparatus for heating a sheet-like material to a predetermined temperature profile along the length and across the width of the material. The sheet-like material is transported within a furnace relative to at least one burner holder above or below, or above and below, the material. Each burner holder includes a number of direct flame impingement burners located side-by-side in a row. The burners are directed toward the sheet-like material, and the individual burners in each burner holder are oriented and controlled so that heat output from the burners provides the predetermined temperature profile within the sheet-like material.

Method and apparatus for heating a sheet-like product

The invention relates to a method for the manufacturing of strips of stainless steel, comprising cold rolling of a strip which in a foregoing process has been manufactured through casting a melt to form a cast strip and/or has been hot rolled. The cold rolling is performed in a rolling mill line (B), which comprises, in the initial part of the line, at least two initial cold rolling mills ( ) in series, after said initial cold rolling mills at least one annealing furnace ( ) and at least one pickling section ( ), and in a terminating part of the line, at least one more cold rolling mill ( ). The patent specification discloses various modes of operation, including passing the strip once or twice through the line.

Method for manufacturing of strips and rolling mill line

A strip of stainless steel, which is cast and/or hot rolled and which is dark colored by oxides on the surface of the strip, remaining from the foregoing manufacture of said cast and/or hot rolled strips, is cold rolled in one or more cold rolling passes ( ) following after each other, so that the thickness of the strip is reduced by 10-75% and so that the oxide scales crackle, i.e. so that fissures are established in the oxide layers. Thereafter, the strip is annealed in a furnace ( ) having a furnace atmosphere obtainable by heating the furnace by means of burners which consume a liquid or gaseous fuel, which is combusted by means of a gas which contains at least 85 vol-% oxygen and not more than 10 vol-% nitrogen, wherein a furnace atmosphere is created, in which the strip can be annealed without oxidising the metal surfaces which are exposed through the crackling, in a way which would make the subsequent descaling and pickling difficult.

Method for manufacturing of strips of stainless steel and integrated rolling mill line

Method for heat treatment of steel, and products of steel

The invention relates to a method of working a hot-rolled stainless steel strip, particularly an austenitic stainless strip, with the intention of reducing the thickness and enhancing the mechanical strength of the strip. The method is characterized by

Method of working a hot-rolled strip

Method for continuous recrystallization annealing of a steel strip

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Torshälla, Sweden

Sten Ljungars