Abstract

A method for cylindrical grinding of cylindrical workpieces on a grinding machine, in which an axes of rotation of a grinding disc and of the workpiece are aligned in parallel to one another and the grinding disc is moved relative to the workpiece in a longitudinal-axial direction of the workpiece during the grinding process. A first grinding disc is followed by a second grinding disc at a continuously constant distance. The distance is determined by the width of the first grinding disc and the remaining grinding parameters, such as the rotational speeds of the first grinding disc and of the workpiece and the feed rate in the longitudinal-axial direction, such that the second grinding disc grinds the helical error lines generated by the first grinding disc during the grind process. A control device adjusts the distance between the first and second grinding discs.

IPC Classes  ?

• B24B 5/22 - Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfacesAccessories therefor involving centreless means for supporting, guiding, floating or rotating work for grinding cylindrical surfaces, e.g. on bolts
• B24B 27/00 - Other grinding machines or devices
• B24B 51/00 - Arrangements for automatic control of a series of individual steps in grinding a workpiece

Goods & Services

Industrial chemicals, namely for electroplating, the steel and casting industry in the form of cored wires for treating molten steel or metal. Common metals and their alloys, Unwrought metal goods, Machined metal articles, The aforesaid goods included in class 6, Especially, of the following materials: Copper, The aforesaid goods for use in installations for use in continuous casting; Continuous casting moulds, crane casting ladles, Moulds for casting, of metal, Pipes and tubes of metal, Metal building materials, ironmongery, small items of metal hardware, Valves for casting ladles, of metal. Machine tools for working metal, wood or plastic, especially, Lathes [machine tools], Milling machines, Drilling machines, Planing machines, Grinding machines; Quick planers; Slotting machines; Gear shapers; Electrical engines; Hydraulic gears; Hydraulic motors and engines, Oleodynamic pumps and Parts for the aforesaid goods, especially Hydraulic gears, engines and motors and pumps for driving machines tools, tools, machine castings; machines, For technical welding purposes, especially, [electric machines ], For technical welding purposes. Hoisting magnets, Scrap handling magnets, Slab turning magnets, Separating magnets, Coil magnets, Magnetic coils. Casting carriages. Servicing of used and second hand installation parts for use in continuous casting, surface coating of continuous casting moulds or casting moulds, resurfacing welding, in particular of continuous casting rollers, grinding, scarfing and flame cutting of slabs, blooms, billets, boards or other semi-finished goods for contract order. Consultancy, planning and construction of steelwork equipment, steel installations for use in continuous casting, rolling mill equipment, treatment installations for hot and cold goods of steel.

Abstract

The invention relates to a method for cylindrical grinding of cylindrical workpieces on a grinding machine, in which the axes of rotation of a grinding disc and of the workpiece are aligned in parallel to one another and the grinding disc is moved relative to the workpiece in the longitudinal-axial direction of the workpiece during the grinding process. According to the invention, the first grinding disc is followed by a second grinding disc at a continuously constant distance, wherein the distance is determined by the width of the first grinding disc and the remaining grinding parameters, such as the rotational speeds of the first grinding disc and of the workpiece and the feed rate in the longitudinal-axial direction, such that the second grinding disc grinds the helical error lines generated by the first grinding disc during the grind process. A control device adjusts the distance between the first and second grinding discs.

IPC Classes  ?

• B24B 5/04 - Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfacesAccessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
• B24B 5/22 - Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfacesAccessories therefor involving centreless means for supporting, guiding, floating or rotating work for grinding cylindrical surfaces, e.g. on bolts
• B24B 27/00 - Other grinding machines or devices
• B24B 51/00 - Arrangements for automatic control of a series of individual steps in grinding a workpiece

Abstract

A device for grinding a continuously cast product, in particular a slab (11), a billet or a block. The Device has at least one rotationally operated abrasive disk (10), which is attached to a grinding head (15). At least one high-pressure air nozzle (14) is arranged on the grinding head (15). The high-pressure air nozzle blows the continuously cast product free of particles adhering to or lying on the continuously cast product prior to grinding.

IPC Classes  ?

• B24B 55/06 - Dust extraction equipment on grinding or polishing machines
• B24B 7/07 - Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfacesAccessories therefor involving a stationary work-table

Abstract

The invention relates to a device for grinding a continuously cast product, in particular a slab (11), a billet or a block, having at least one rotationally operated abrasive disk (10), which is attached to a grinding head (15). According to the invention, at least one high-pressure air nozzle (14) is also arranged on the grinding head (15), said high-pressure air nozzle blowing the continuously cast product free of particles adhering to or lying on same prior to grinding.

IPC Classes  ?

• B24B 27/033 - Other grinding machines or devices for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface
• B24B 55/06 - Dust extraction equipment on grinding or polishing machines
• B24B 55/02 - Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant

Abstract

The invention relates to a device for removing burrs on slab edges, which are formed on longitudinal or transverse parts of a slab by means of flame cutting, by rotating an abrasive disk which is guided along the slab edges. According to the claimed device, in order to remove the burrs in one single step and without a great amount of expense, the abrasive tool comprises an abrasive disk that rotates about a rotational axis arranged parallel to the longitudinal direction of the slab and the abrasive disk can be moved, preferably pivoted, by means of a hydraulic cylinder in the direction of the abrasive plane.

IPC Classes  ?

• B24B 9/00 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor
• B22D 11/126 - Accessories for subsequent treating or working cast stock in situ for cutting

Abstract

A copper mold or copper mold plate and also a process for reconditioning such worn molds or mold plates, which are used for the continuous casting of metals or metal alloys is provided. An electrolytically applied copper coating is provided on the inner wall of the mold or on that side of the mold plate which faces toward the casting strand.

IPC Classes  ?

• B22D 11/059 - Mould materials or platings
• C25D 5/34 - Pretreatment of metallic surfaces to be electroplated

Abstract

The invention relates to a device and a method for drawing off liquids and/or suspensions below the surface of water, with a bell element disposed at the end and a suction pipe disposed thereon. According to the invention, at least one compressed air supply line (4) discharges into the suction pipe (3) or into the bell element (2) in the lower region of the device. Preferably a plurality of compressed air supply lines is used, said supply lines discharging at spacings in the axial direction of the suction pipe and being acted upon by compressed air in succession from the top to the bottom.

IPC Classes  ?

• E21B 43/01 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations

Goods & Services

Hoisting magnets; Scrap handling magnets; Slab turning magnets; Separating magnets; Magnets for lifting, turning and transporting coils; Electric or electronic circuits for short-term emergency power supplying to magnets of the aforesaid kind; Electromagnetic coils, Electric capacitors; Power failure-sensitive alarm devices for load lifting magnets.

Abstract

The invention relates to a copper die or copper die plate, and to a method for reworking such worn dies or die plates used for the continuous casting of metals or metal alloys. According to the invention, a coating consisting of electrolytically applied copper is applied to the inner wall of the die or the die plate side facing the cast billet.

IPC Classes  ?

• C25D 5/12 - Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
• C25D 5/48 - After-treatment of electroplated surfaces
• C25D 7/00 - Electroplating characterised by the article coated
• C25D 15/02 - Combined electrolytic and electrophoretic processes
• C25D 15/00 - Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires
• B22D 11/059 - Mould materials or platings

Abstract

The invention relates to a toggle press comprising at least two toggles, each of which has two lever arms and a pressure lever. One lever arm of the toggles is hingedly mounted on a ram, while the other lever arm is hingedly fixed to a frame. The toggle press further comprises at least two lever elements which are rotatably mounted on the frame and each of which has a force arm and a load arm that is hingedly connected to the pressure lever. The aim of the invention is to develop such toggle presses in such a way that a maximum pressing force can be applied while keeping the arrangement as compact as possible and favorably distributing the forces in the press member as tractive forces and compressive forces. Said aim is achieved by hingedly connecting two lever arms to a single ram and connecting the force arms to a tractive or pressing device.

IPC Classes  ?

• B30B 1/16 - Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism operated by fluid-pressure means
• B30B 1/10 - Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism

Abstract

The invention relates to a method for producing binder-free pressed articles from metal chips and/or metal dusts as well as an apparatus for carrying out said method. The aim of the invention is to devise a method and design an apparatus which always allow any amounts of a mixture of metal dust and metal chips to be supplied for further processing. Said aim is achieved by sucking off the metal chips and/or metal dusts directly where the chips are cut by means of a suction pipe (2) and storing the metal chips and/or metal dusts as a pressing charge in a temporary store (1) or immediately feeding the same to the press via the suction pipe (2) in metered amounts corresponding to the capacity of the supplied press. In order to carry out said method, an apparatus is provided which comprises a suction device that consists of a pipe extending into a temporary store (1) or a press.

IPC Classes  ?

• B30B 9/30 - Presses specially adapted for particular purposes for balingCompression boxes therefor
• B30B 9/32 - Presses specially adapted for particular purposes for consolidating scrap metal or for compacting used cars
• B23Q 11/00 - Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling workSafety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools

Abstract

The invention relates to a lifting magnet (11), comprising an emergency power source (121) effective during a mains power failure, said emergency power source having a plurality of high-performance capacitors (12), preferably double-layer capacitors, and to a method for the emergency power supply of a lifting magnet comprising a mains voltage (10), a transmitter (32), a receiver (33) with a relay (311) and an emergency power source (121). According to the invention, the transmitter modulates a (high) frequency test signal (34) on the mains voltage, said test signal being received and evaluated by a receiver connected to the mains voltage, wherein the receiver has a relay, by means of which the emergency power source is connected to the mains voltage when the receiver does not receive the received test signal.

IPC Classes  ?

• H01F 7/18 - Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
• H02H 1/00 - Details of emergency protective circuit arrangements
• H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over

Abstract

The invention relates to a method for producing binderless briquettes from metal chips and metal dusts, in which the metal chips are pressed into a cup-shaped mould and the upwardly open hollow space produced as a result is filled with metal dust, after which the opening is closed by a cover consisting of pressed metal chips.

IPC Classes  ?

• C22B 1/24 - BindingBriquetting
• C22B 1/248 - BindingBriquetting of metal scrap or alloys
• C22B 7/02 - Working-up flue dust

Goods & Services

Chemicals used in industry, namely for galvanic technique, steel and foundry industry in form of filling lines for treatment of steel or casting melts. Common metals and their alloys, unprocessed and processed metal goods (included in class 6), in particular of copper, for use in continuous casting installations; continuous casting chill-moulds, crane-foundry pans, foundry moulds (of metal), pipes and tubes of metal, metal building materials, ironmongery and small items of metal hard-ware, valves for foundry pans of metal. Metal-, wood-, plastics working machines, in particular lathes, milling-, drilling-, planing- or truing machines, fast planing machines, holing machines, gearwheel holing machines, electric motors, hydraulic transmissions, hydraulic motors and pumps and parts of the aforementioned goods, in particular hydraulic transmissions, motors and pumps for drive of machine tools, tools, machine casting, machines for welding purposes, in particular electric machines for welding purposes. Load elevating magnets, scrap trans-ship magnets, slab turning magnets, separating magnets, coil-magnets, magnetic coils. Furnaces and oven-fittings made for fireclay. Casting carriages for foundries. Maintenance for machine parts used at continuous casting, surface coating of continuous casting moulds or foundry moulds, welding tasks, in particular of continuous casting rolls, grinding, fire cutting of slabs, front blocks, cudgels, platines or other part products by wage-task. Technical consulting, planing and construction of steel work institutions, steel-continuous casting installations, rolling mill installations, machining operation installations for warm or cold products of steel.

Abstract

The invention relates to a flame burner having a nozzle (10) disposed in a head, wherein in addition to annularly disposed gas supply channels (11) the nozzle has a central gas supply opening (12), which has a laval nozzle-like region and a stabilizing region having a consistent diameter connected thereto in the flow direction. In order to flame burn a metallic surface the oxygen gas guided through a central nozzle of a flame burner is incited to oscillate in such a manner, such that a pulsating oxygen flow exiting the nozzle mouth is formed at the speed of sound, or at supersonic speed.

IPC Classes  ?

• F23D 14/22 - Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
• F23D 14/56 - Nozzles for spreading the flame over an area, e.g. for desurfacing of solid material, for surface hardening or for heating workpieces
• F23D 14/58 - Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration

Abstract

The invention relates to a gas burner nozzle for flame work, with a central oxygen supply consisting of several pipes (13) and with several pipes (11, 12) arranged around the aforementioned oxygen supply for the supply of fuel gas. According to the invention, the pipes for the oxygen supply are arranged in groups, with the individual groups arranged coaxially and at a distance from each other, and with each group consisting of at least two rows of pipes arranged in the form of concentric rings.

IPC Classes  ?

• F23D 14/22 - Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
• F23D 14/56 - Nozzles for spreading the flame over an area, e.g. for desurfacing of solid material, for surface hardening or for heating workpieces
• F23D 14/58 - Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration

Abstract

The invention relates to a method of fixing the windings of a metal strip coil (10) during lifting or transporting and to a device for carrying out this method. According to the invention, in order to fix the central metal strip layers, an expanding device (13) is inserted into the central hole (11) before the lifting and is expanded in such a way that a pressure is exerted on the inner windings. The expanding device is preferably an inflatable body.

IPC Classes  ?

• B21C 47/24 - Transferring coils to or from winding apparatus or to or from operative position thereinPreventing uncoiling during transfer
• B66C 1/46 - Gripping members engaging only the external or internal surface of the articles and applying frictional forces by inflatable elements