Hoesch Aktiengesellschaft

Rothe Erde Gmbh

Hoechst Aktiengesellschaft

Thyssen Krupp Ag

Hoesch Werke Aktiengesellschaft

Johannes Wozniak

Klaus Henke

Jörg Rollmann

Bernd Stakemeier

Dietrich Andree

Dieter Becker

Heinrich Siemensmeyer

Wilfried Spintig

Nikolaus Balmus

Daniel Hansmann

Wolfgang Werther

Engelbert Koss

Axel Von Hehl

Josef Bracht

Uwe Komp

A method and a device are provided for the thermomechanical treatment of seamless steel rings produced on radial-axial ring rolling machines, particularly rings of fine grain steel, heat-treatable steel, case hardened steel, or austenitic steel, preferably of steel tower flanges for wind turbine generators. The ring blank is inserted into the ring rolling machine at a temperature in the range of 900&#xb0; C. to 1150&#xb0; C. and is rolled to an outer diameter preferably in the range of 0.2 m to 10 m by a hot forming process. The hot ring () is quickly cooled down by a controlled process directly following the rolling, without secondary heating, from a temperature over the conversion temperature in the austenite range to a temperature below 400&#xb0; C. The device includes a dipping basin filled with cooling liquid () or an unfilled cooling container, and a carrier () that can be lowered with a hoisting device (), the rolled ring () lying on the carrier. Pressure nozzles () are arranged in the dipping basin or the cooling container () on one or several ring lines (), in an equal distribution, for the targeted application of the cooling liquid () onto at least one of the ring-shaped surfaces of the ring (). Measurement of the ring temperature before and/or after the cooldown is carried out, preferably, with a radiation pyrometer.

Method for the thermomechanical treatment of seamless rings produced on radial-axial ring rolling machines

A bearing ring for a large roller bearing is formed with at least one annular race which is hardened by heating by juxtaposing that race with an inductor across a spacing which is maintained during the heating and then quenching. The spacing is controlled selectively so that it is:

Method of making a bearing ring for a large roller bearing

A road wheel for a track laying vehicle is made by initially roll pressing and projection drawing a planar disk of temperable steel into a blank having a cylindrical portion, a planar hub portion and an intermediate portion bridging the hub and peripheral projection. Prior to machining at least of the intermediate portions, the blank is tempered and thereby increased in size. The blank is reshaped following the tempering and prior to machining to the original blank shape and is then machined.

Method of producing a road wheel for a track vehicle

A device for detecting and monitoring damage to races (3 and receiver 24) or adjacent areas on the rings (1 and 2) in antifriction bearings. The object of the present invention is a device that will not only precisely measure the dimensions of cracks and pits in the race or in the transition between the races and the ring but will also forward the results to the processing equipment with no perforations in the ring and without cables and plugs. One or more sensors (13 and 14) are positioned between the rolling components (5) inside the antifriction bearing, whereby the signals they generate are transmitted electromagnetically to a receiver antenna (23) outside the antifriction bearing.

Device for monitoring antifriction bearings

A large open-center roller bearing consisting of single or multiple outer and inner rings with rollers rolling over races between the rings, wherein one ring can accommodate an ultrasonic probe and the other ring has a contact surface. The object is to provide a bearing that can be simply and reliably tested by ultrasound. One or more contact surfaces (19, 24, and 25) extend around one or more of the outer surfaces of the ring (2 or 3) being tested.

Center-free large roller bearing

In a running wheel for track vehicles comprising two discs (1) which leave free a guide gap (11) for the chain teeth (10) and which terminate in a cylindrical region (2) with rubber coating (3) disposed at the outer periphery, to reduce the material stresses in each case in the transition between cylindrical region (2) and disc (1) due to the introduced forces at the open end of the cylindrical region (2) with constant wall thickness, in the third of the cylindrical region (2) remote from each disc (1) an inwardly directed peripheral bead (4) is disposed.

Running wheel for track vehicles

A road wheel for a track-laying vehicle is composed of two wheel halves, each of which is deep drawn and pressed from a steel disk. The wheel halves have cylindrical and hub portions bridged by conical portions of different projection angles dimensioned so that the wheel half is of light weight, resistant to attack and of high strength.

Growing community of inventors

Lippstadt, Germany

Johannes Wozniak