Sundwiger Eisenhutte Maschinenfabrik Gmbh & Co.

Mannesmann Aktiengesellschaft

Udo Riedesel

Helmut Jung

Franz G Pempera

Sergej L Kozar

Heinz F Rogowsky

Andrej D Dejneko

Wladilen S Lepekin

Walter Ammermann

Wladimir N Skorochodov

Jurgen Jaschinski

Mihail-Dan Gutu

Wladimir P Schumilow

In an apparatus for the surface treatment of material to be treated by means of a treatment liquid, in particular a band pickling plant, with a vessel (1) receiving the treatment liquid (F), through which the material (S) to be treated can be conveyed, with a lid (2) with which the vessel (1) can be tightly sealed, with an inlet and outlet opening (4, 5) through which the material (S) to be treated enters into and exits from the vessel (1), and with suction openings (9a, 11a) through which the evaporated treatment liquid (F) can be sucked off from the vessel (1), the quantity of the gas to be discharged is reduced in accordance with the invention and, simultaneously, the danger of damaging the material (S) to be treated is reduced without impairing the performance of the apparatus in such a way that in the zone of the inlet and outlet opening (4, 5) of the vessel (1) one inlet chamber and one outlet chamber (9, 11) are separated from the inner space (8) of the vessel (1) by at least one shut-off partition (7, 10) each extending between the side walls of the vessel (1) and, when the lid (2) is closed, from the same to at least the surface of the treatment liquid (F) and that the inlet and outlet chambers (9, 11) are each provided with at least one suction opening (9a, 11a) for the evaporated treatment liquid (F).

Apparatus for the surface treatment of material to be treated by means

The invention relates to a process and apparatus for producing a rough and hard generated surface on a cylindrical body of rotation, more particularly a roll for metal strips. To rapidly obtain as uniform a surface roughness as possible, the body of rotation (2), acting as a cathode, is immersed over its whole length into an electrolyte (1) in a tank (3) only to such an extent that the immersed peripheral portion is narrower by a multiple than a plate-shaped anode (5) disposed opposite the body of rotation and extending over its whole length. The electrolyte can contain a substance suitable as a finishing deposit on the generated surface.

Process and apparatus for producing a rough generated surface on a

In an apparatus capable of drying metallic belts or strands of varying widths, a hot air blowing system is arranged such that the effective width of the hot-air flow is selectively adjusted according to the width of each belt intended to be dried. The otherwise present but now excess hot air produced when narrower belt widths are dried is then directed to the suction or inlet side of the air blower to thereby recover otherwise lost heated air. This recycled heated air is redirected back to the air blower to thereby conserve energy at the heat exchanger which is used to heat the air. The quantity of hot air passing per unit time corresponding to a decreased belt width may also be adjusted by means of a valve of the blower system, thereby lowering the heating energy needed to be supplied to the heat exchanger.

Drying apparatus for metallic belt processed in a fluid

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Hemer, Germany

Udo Riedesel