Abstract: A method and apparatus for continuously feeding rolling stock through a cold pilger rolling mill. A rolling stock--either a continuous or so-called "endless" piece, or a plurality of serially fed, spaced-apart pieces--is initially fed into a roll stand by a feed side drive or transporting arrangement, and thereafter, drawn through the rolling mill by a delivery side drive or transporting arrangement that is located in a rolling direction, i.e. downstream, from the feed side drive arrangement. Once the leading free end of the rolling stock is grasped by the delivery side transporting arrangement, the feed side transporting arrangement ceases to feed the rolling stock through the rolling mill, i.e. forward feeding of the rolling stock is exclusively controlled by the delivery side transporting arrangement.

Abstract: A heat exchange surface in reactors and/or heat exchangers of installations for the conversion of hydrocarbons and other organic compounds at high temperatures in the gaseous phase. According to the invention, the metallic surfaces coming into contact with the organic substances are treated at a temperature of 300 to 1000.degree. C. over a period of 0.5 to 12 hours with a mixture of a silicon- and sulfur-containing product and a dry gas flow which is inert with respect to the silicon- and sulfur-containing product. The invention is further directed to a process for producing a catalytically inactivated metallic surface in chemical reactors and/or heat exchangers.

Abstract: A device for winding strip-type material, especially steel strip, alternately on each of two expandable coiler drums arranged horizontally and parallel to one another, which are mounted in free-floating fashion in a carrying frame arranged in rotary-drivable fashion around a shared horizontal central axis and are themselves rotary-drivable independently of one another. The rotary drives for the coiler drums together with the carrying frame are attached to the frame in rotatable fashion. The drum-type carrying frame consists of two vertical circular-disk-type carrying walls which are separated from and parallel to one another. Longitudinal traverses connect the carrying walls together. On the longitudinal traverses are mounted the coiler drums, which penetrate one carrying wall, and their expanding drives. Flanged onto the outside of the other carrying wall are the simultaneously drivable rotary drives, which are connected to the coiler drums through universal joint shafts in geared fashion.

Abstract: An electropneumatic valve including a valve body and a proportional magnet connected thereto and having a unitary tappet having an integral valve disk disposed at one end and an armature of the proportional magnet disposed at an end longitudinally opposite thereto. The tappet and valve disk being formed of a nonmagnetic material and the valve body and proportional magnet are contactingly connected by complementary interlocking features.

Abstract: A process and a device for providing navigational assistance to a vehicle driver in reaching a target position in a vehicle, in which the current local position is identified, a route is determined and current travel tips for this route are obtained from a traffic computer, which is disposed outside of the vehicle, and are displayed to the driver. To provide fully automatic navigational assistance in which the driver's input is minimized, especially in the case of frequently repeated routine trips, the target position is derived automatically, according to probability, on the basis of stored historical travel information.

Abstract: A contour measuring devices for measuring the contour of hot-strip rolls installed in a roll stand during a rolling process includes a plurality of distance sensors that extend along the length of the hot-strip roll in a perpendicular and non-contacting manner and, in this manner. Each distance sensor has a measurement head oriented towards the hot-strip roll. The plurality of distance sensors are positioned separate from and lateral to each other on and along a longitudinal support. The longitudinal support is comprised of a double shell tube that cools the design sensors with an inner tube that conducts a coolant, a shell tube that surrounds the inner tube, and an annular space located therebetween. The inner tube is fixed at its opposite ends in a position relative to the shell tube.

Abstract: A process for operating a continuous casting plant with a continuous casting machine that has a stationary mold and is connected via a roller table to an equalizing furnace. After establishment of the slab format at the mold outlet, at least the casting parameter of casting speed is set so that the slab, upon entry into the equalizing furnace, has the desired roll temperature of the hot strip to be produced, and the lowest point of the liquid pool is always located in the mouth region of the continuous casting machine. Measures are taken to influence the heat energy content of the slab after it leaves the continuous casting machine.

Abstract: The invention is directed to an immersion nozzle for casting metal, especially steel, in plants for the continuous casting of thin slabs. On order to provide an immersion casting pipe that is easy to manufacture, has a long life, and enables the liquid metal to flow out in a uniform manner, it is suggested, according to the invention, that the pour-in part (11) is a pipe having a straight-surface front mouth (12), and the pour-out part (21) is constructed from plane-surface wall elements (22, 23). For this purpose, the circular cross-sectional area (A.sub.R) of the pour-in part (11) is in a relationship to the rectangular free cross-sectional area (A.sub.E) of the pour-out part (21) such that A.sub.R /A.sub.E .gtoreq.1.7.

Abstract: Metal strip close to its final dimensions is cast using a strip-casting apparatus provided with a melt-holding vessel and a conveyor belt, in which a metal melt, in particular steel, flows out of a casting nozzle of a closable pouring chamber which can be put under vacuum and is connected via a siphon to a main chamber which can be put under pressure. The casting nozzle is inclined by about 45.degree. and is of trumpet-like configuration in the region of the orifice on the inside of the nozzle wall remote from the main chamber. Additionally, a shut-off element which can be opened in a slit-shaped manner is provided near the orifice of the casting nozzle.

Abstract: Disclosed are a method and apparatus for manufacturing tubes, preferably tubes composed of high-tensile steels or special alloys, using the cold pilger rolling method with two rolling stands which can be moved backward and forward, at least in opposite directions at times and in the rolling direction by means of crank drives. The rolling stands have rollers which are calibrated in a tapering manner and which, driven by toothed racks via cogs, roll over the material to be rolled, with an alternating rotation direction. The majority of the forming work takes place on the first rolling stand and a relatively small portion of the forming work takes place on the second rolling stand and additional smoothing work is carried out.

Abstract: A process for operating an injection molding machine with a stationary die plate on a machine bed and a movable die plate, which die plates are lockable during an injection process by magnetic closing elements, the process including the steps of moving the movable die plate toward the stationary die plate to close a mold, simultaneously moving a structural component part enclosing one of the die plates toward one end to a distance of a few millimeters from the other of the die plates, locking a drive of the movable die plate, activating electromagnets arranged at the structural component part enclosing the one die plate by supplying current, adjusting generation of electromagnetic closing force relative to energy level and duration in dependence on an injection process, and at the end of an injection cycle, moving the movable die plate and the structural component part enclosing the one die plate into an end position in which a free space is formed, so that the free space above the machine bed between the die

Abstract: An apparatus for guiding hot-rolled strips through an inductor, arranged between two adjacent roll stands, of an induction heating device, in particular within a finishing mill behind a strip-casting installation or thin-slab casting installation. The apparatus guides the strip between the roll stands under controlled tension over at least two guide rollers arranged on both sides of the inductor in a plane of travel of the strip which extends centrally through the inductor space between the induction coils. A tension-measurement roller is provided for regulating the tension of the strip and is arranged in front of the inductor and the first guide roller.

Abstract: A method for accessing at least a portion of the data on a microprocessor card, such as a Subscriber Identity Module (SIM) card having at least one freely accessible card number for use with mobile phones. A separate master card uses a self-contained key and encryption algorithm together with the accessible SIM card number to generate a first identification number that is communicated to and stored on the SIM card during initial programming of the SIM card. When access to data stored on the SIM card is thereafter required, a second identification number is calculated in the same manner, is communicated to the SIM card, and is compared on the SIM card with the stored first identification number. Access to the data stored on the SIM card is granted only when the first and second identification match.

Abstract: A device for producing pressed articles with a main cylindrically-shaped elements and secondary helically-shaped element from powdered material, especially powdered metal, with a female mold and with at least one top punch, which is supported so as to be rotatable about its longitudinal axis, and at least one bottom punch, which is supported so as to be rotatable about its longitudinal axis. The top and bottom punches are movable axially relative to the female mold by means of motor drives and the top punch, of which there is at least one, is driven in rotation about its longitudinal axis to achieve a helical movement in addition to its axial drive the bottom punch, of which there is at least one, is also driven in rotation. Rotary motor drives of the punches are mechanically uncoupled from the drives for the axial movement of the punches and may be regulated separately by an electronic control.

Abstract: A drum-type shear for cutting high-speed strip, especially hot strip, includes a blade that is movable radially into and out of a rotating blade drum from which it is extendable into a strip-cutting position at a desired cutting time. In order to provide reliable and accurate cross-cutting of even broad and thick strips using nevertheless simple structural means, a linearly translatable push-pull rod that extends axially in the blade drum has wedge surfaces that abut with corresponding wedge surfaces of the blade or blade holder for extending and retracting the cutting blade. The push-pull rod rotates with the blade drum and is connected to a stationary linear drive via a thrust bearing for transmitting axial rod-translating forces to the push-pull rod as the rod rotates with the drum.

Abstract: A process and a system for removing scale from the surface of high-grade steel strip in installations for the production of pickled hot strip and cold strip. The twofold descaling process combines an electrolytic pickling process with and ultrasonic cleaning of the strip surface.

Abstract: A metal-physical model is used in a computer controlled cooling device for a rolling and cooling process for rolling a hot strip or a plate. The cooling parameters are calculated based on initial conditions. The computer uses the metal physical model to instantaneously alter the cooling parameters in response to changes in the final rolling temperatures and the rate at which the hot strip or plate is moved through the cooling device.

Abstract: A process and apparatus for determining traffic conditions using stationary data collection devices that are installed in a road network. The data collection devices collect data about traffic conditions at the respective installation sites in keeping with an established measurement and then forward the collected information to a traffic center in keeping with an established reporting procedure where the data is analyzed to determine the traffic condition. At least a portion of the results of the analyses of the traffic center is transmitted to particular data collection devices. The measurement and reporting procedures of the particular data collection devices are modified or influenced based on the results of the analyses of the traffic center and as a result the data transmissions between the traffic center and data collections devices are substantially reduced.

Abstract: A charging device for closed arc furnaces having at least one electrode around which the charge material is concentrically fed into the furnace. Conveyor devices run in protected fashion in an annular chamber disposed above a furnace cover. A plurality of magnets are suspended from the conveyor devices into the upper vessel of the furnace. A material feeding device enters the upper vessel through a passage in the upper vessel wall. The passage is provided with a sealing device to prevent gases from the upper vessel from escaping or the material feeding device may be enclosed in a gas-tight lock. The magnets pick-up the charge material from the material feeding device and deposit it concentrically around the electrode.

Abstract: A running mechanism which travels on a running rail comprising a web and a flange. Running wheels are supported by the flange on opposite sides of the web and are rotatably mounted in frame parts which are connected by an articulation arranged below the running rail such that the frame parts swivel open or closed laterally about a swivel pin. A load acts on at least one of the frame parts at the height of or below the swivel pin and holds the frame parts swiveled closed towards the web on both sides by means of a closing moment generated by the load. Guide rollers, one of which is rotatably supported in the frame part, are supported on opposite sides of the web.