WO2019206365A1 - Grinding device - Google Patents

Grinding device Download PDF

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Publication number
WO2019206365A1
WO2019206365A1 PCT/DE2019/100336 DE2019100336W WO2019206365A1 WO 2019206365 A1 WO2019206365 A1 WO 2019206365A1 DE 2019100336 W DE2019100336 W DE 2019100336W WO 2019206365 A1 WO2019206365 A1 WO 2019206365A1
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WO
WIPO (PCT)
Prior art keywords
grinding
pressure air
nozzle
slab
air nozzle
Prior art date
Application number
PCT/DE2019/100336
Other languages
German (de)
French (fr)
Inventor
Jacques-Olivier Lambert
Jean-Louis Maurice
Gilles Schwirtz
Egon Evertz
Original Assignee
Egon Evertz Kg (Gmbh & Co)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Egon Evertz Kg (Gmbh & Co) filed Critical Egon Evertz Kg (Gmbh & Co)
Priority to EP19720770.7A priority Critical patent/EP3784433A1/en
Priority to CN201980015395.3A priority patent/CN111757791A/en
Priority to US17/047,586 priority patent/US20210114169A1/en
Publication of WO2019206365A1 publication Critical patent/WO2019206365A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00—Other grinding machines or devices
    • B24B27/033—Other grinding machines or devices for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/07—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor involving a stationary work-table
    • B24B7/075—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor involving a stationary work-table using a reciprocating grinding head mounted on a movable carriage

Definitions

  • the invention relates to a device for grinding a continuously cast product, in particular a slab, a billet or block, with at least one rotating grinding wheel attached to a grinding head.
  • grinding devices can be processed steel, in particular in the form of steel slabs, which are produced in a slab caster.
  • slabs are generally cuboid.
  • the slab coming from the casting process has production-related surface defects, which exist, for example, in the form of grooves, grooves, cracks or other undesirable inclusions.
  • Flämmbearbeitung has the disadvantage that melted material can not be melted again without treatment due to the high oxygen content.
  • EP 2 032 285 therefore, a surface treatment by milling is proposed.
  • hot milling chips which must be removed from the work area.
  • the roll or face milling cutters used must also be cooled in order to prevent overheating of the milling tools, which would lead to considerable wear.
  • For cooling cooling lubricants are used, which make immediate further processing of the removed chips impossible.
  • the cooling lubricant must be disposed of separately as hazardous waste.
  • the present invention relates to both surface grinding operations in which the
  • Grinding wheel axis is oriented. Such devices are described for example in DE 101 48 183 A1. It is an object of the present invention to provide a grinding device that performs a leading to an improved surface quality grinding work.
  • the device according to claim 1 which is characterized in that at least one high-pressure air nozzle is arranged on the grinding head, which blows the continuously cast product before the grinding of adhering or resting particles without the use of a liquid.
  • the advantage of such a grinding device is that dust grains
  • Metal chips or other adhering particles are removed before the grindstone reaches the relevant processing zone.
  • abraded particles from the grinding wheel that are harder than (slab) steel are blown away, thus not forcing these particles into the slab surface during grinding
  • the high pressure air nozzle or nozzles are integrated on the grinding head, so that by this assembly, the distance of the grinding wheels to the high pressure air nozzle and the jet direction is fixed and remains unchanged even during the movement of the head to guide the grinding wheel.
  • Milling operations that produce chips, which then have to be disposed of, can be the blown sanding dust, for example by a
  • two or more high-pressure air nozzles are arranged on both sides of the grinding wheel or each grinding wheel, so that at least one high-pressure air nozzle is operable at a direction of grinding, which blows away particles before grinding.
  • the pressurization of the nozzles can be done by the same control, which also initiates the change of direction during grinding.
  • the pressures used are preferably at least 2 bar (2 ⁇ 10 5 Pa), in particular between 5 bar and 120 bar ( 5 ⁇ 10 5 Pa to 12 ⁇ 10 6 Pa).
  • the air outlet velocity at the nozzle is at least 100 m / sec, preferably more than 200 m / sec.
  • Fig. 1 is a schematic diagram for illustrating the state of the
  • FIG. 2 is a schematic diagram according to the present invention with an additionally used high-pressure air nozzle
  • Fig. 3 shows a first embodiment of a grinding head with a
  • FIG. 4 shows a second embodiment of a grinding head with a
  • the grinding wheel 10 shown in Fig. 1 is used to treat a slab 11, wherein in the example shown, the slab is moved along the arrow 12 until the grinding work was done over the entire slab length. Subsequently, the slab 1 1 is advanced in the vertical direction to the longitudinal axis to pass through the next slideway in the longitudinal axial direction.
  • Remaining abrasive grains or metal or dust grains as well as defect inclusions on the slab surface are indicated by reference numeral 13.
  • Abrasion of the grinding wheel can be generated.
  • the grinding wheel 10 and the high-pressure air nozzle 14 are fastened to a grinding head 15.
  • the embodiment according to FIG. 4 differs from that described above in that two high-pressure air nozzles 141 and 142 are provided, which are arranged offset on both sides of the grinding wheel 10 and which are operated alternately, so that grinding wheel movements to the slab in two directions (see double arrow 17). respectively. It is the high-pressure air nozzle with compressed air subjected to which slightly offset unprocessed grinding areas as well as resulting grinding dust.
  • the exiting air flow is identified by reference numeral 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

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.

Description

Schleifvorrichtunq  Schleifvorrichtunq
Die Erfindung betrifft eine Vorrichtung zum Schleifen eines stranggegossenen Produktes, insbesondere einer Bramme, eines Knüppels oder Blocks, mit mindestens einer rotierend betriebenen Schleifscheibe, die an einem Schleifkopf befestigt ist. The invention relates to a device for grinding a continuously cast product, in particular a slab, a billet or block, with at least one rotating grinding wheel attached to a grinding head.
Mit solchen Schleifvorrichtungen lassen sich Halbzeuge aus Stahl, insbesondere in Form von Stahlbrammen bearbeiten, die in einer Brammenstranggießanlage hergestellt werden. Solche Brammen sind in der Regel quaderförmig. Die aus dem Gießvorgang kommende Bramme weist fertigungsbedingte Oberflächenfehler auf, die beispielsweise in Form von Riefen, Rillen, Rissen oder anderen unerwünschten Einschlüssen bestehen. With such grinding devices can be processed steel, in particular in the form of steel slabs, which are produced in a slab caster. Such slabs are generally cuboid. The slab coming from the casting process has production-related surface defects, which exist, for example, in the form of grooves, grooves, cracks or other undesirable inclusions.
Für die Oberflächenbearbeitung bieten sich verschiedene Verfahren wie das For surface treatment, various methods such as
Flämmen, Fräsen oder Schleifen an. Scarfing, milling or grinding.
Die Flämmbearbeitung hat den Nachteil, dass abgeschmolzenes Material in Folge des hohen Sauerstoffgehalts nicht wieder ohne Aufbereitung eingeschmolzen werden kann. In der EP 2 032 285 wird daher eine Oberflächenbehandlung durch Fräsen vorgeschlagen. Nachteiligerweise entstehen hierbei heiße Frässpäne, die aus dem Arbeitsbereich abgefördert werden müssen. Die eingesetzten Walzen- oder Stirnfräser müssen zudem gekühlt werden, um eine Überhitzung der Fräswerkzeuge zu verhindern, die zu einem erheblichen Verschleiß führen würde. Zur Kühlung werden Kühlschmiermittel verwendet, die eine unmittelbare Weiterverarbeitung der abgetragenen Späne unmöglich machen. Bevor solche Späne wieder Flämmbearbeitung has the disadvantage that melted material can not be melted again without treatment due to the high oxygen content. In EP 2 032 285, therefore, a surface treatment by milling is proposed. Disadvantageously arise here hot milling chips, which must be removed from the work area. The roll or face milling cutters used must also be cooled in order to prevent overheating of the milling tools, which would lead to considerable wear. For cooling cooling lubricants are used, which make immediate further processing of the removed chips impossible. Before such chips again
eingeschmolzen werden, müssen sie gewaschen und von den Kühlschmiermitteln separiert werden; das Kühlschmiermittel muss als Sondermüll getrennt entsorgt werden. must be washed and separated from the cooling lubricants; The cooling lubricant must be disposed of separately as hazardous waste.
In diesem Zusammenhang ist erwähnt worden, dass eine Abförderung der Späne durch Hilfsmittel wie ein Luftgebläse oder ein Wasserstrahl, die hinter der Frässtation angeordnet sind, unterstützt werden kann. Beim Schleifen besteht die Gefahr, dass sich Staub oder andere unerwünschte Partikel, die an der Oberfläche anhaften, beim Schleifen in die geschliffene Oberfläche eingedrückt werden, was die Qualität der geschliffenen Oberfläche minimiert. Absauganlagen oder Kühlwasserzugaben helfen nur bedingt. In this connection, it has been mentioned that a discharge of the chips can be assisted by means such as an air blower or a water jet, which are arranged behind the milling station. When grinding there is a risk that Dust or other unwanted particles adhering to the surface are pressed into the ground surface during grinding, which minimizes the quality of the ground surface. Extraction systems or cooling water additions only partially help.
Die vorliegende Erfindung betrifft sowohl Planschleifvorgänge, bei denen die The present invention relates to both surface grinding operations in which the
Schleifscheibe pendelnd vertikal zur Vorschubrichtung einer Bramme hin und her bewegt wird als auch solche Schleifvorrichtungen, bei denen ein Schleifarm mit einem endseitig befestigten Schleifwerkzeug mit seiner Längsachse und einem spitzen Winkel in der Größenordnung zwischen 25° bis etwa 65° zur Grinding wheel oscillating vertically to the feed direction of a slab is moved back and forth as well as those grinding devices in which a grinding arm with an end-mounted grinding tool with its longitudinal axis and an acute angle in the order of between 25 ° to about 65 °
Schleifscheibendrehachse orientiert ist. Solche Vorrichtungen werden beispielsweise in der DE 101 48 183 A1 beschrieben. Es ist Aufgabe der vorliegenden Erfindung, eine Schleifvorrichtung anzugeben, die ein zu einer verbesserten Oberflächenqualität führende Schleifarbeit leistet. Grinding wheel axis is oriented. Such devices are described for example in DE 101 48 183 A1. It is an object of the present invention to provide a grinding device that performs a leading to an improved surface quality grinding work.
Diese Aufgabe wird durch die Vorrichtung nach Anspruch 1 gelöst, die dadurch gekennzeichnet ist, dass an dem Schleifkopf mindestens eine Hochdruckluftdüse angeordnet ist, die das stranggegossene Produkt vor der Schleifbearbeitung von anhaftenden oder aufliegenden Partikeln ohne Einsatz einer Flüssigkeit freibläst. Der Vorteil einer solchen Schleifvorrichtung besteht darin, dass Staubkörner, This object is achieved by the device according to claim 1, which is characterized in that at least one high-pressure air nozzle is arranged on the grinding head, which blows the continuously cast product before the grinding of adhering or resting particles without the use of a liquid. The advantage of such a grinding device is that dust grains,
Metallsplitter oder andere anhaftende Partikel entfernt werden, bevor der Schleifstein die betreffende Bearbeitungszone erreicht. Insbesondere werden abgeschliffene Partikel vom Schleifrad, die härter als (Brammen-)Stahl sind, weggeblasen, womit diese Partikel nicht in die Brammenoberfläche beim Schleifen eingedrückt  Metal chips or other adhering particles are removed before the grindstone reaches the relevant processing zone. In particular, abraded particles from the grinding wheel that are harder than (slab) steel are blown away, thus not forcing these particles into the slab surface during grinding
beziehungsweise eingepresst werden. Die Hochdruckluftdüse oder Düsen sind am Schleifkopf integriert, so dass durch diese Montage der Abstand der Schleifscheiben zur Hochdruckluftdüse und deren Strahlrichtung fest einstellbar ist und auch bei der Bewegung des Kopfes zur Führung der Schleifscheibe unverändert bleibt. or be pressed. The high pressure air nozzle or nozzles are integrated on the grinding head, so that by this assembly, the distance of the grinding wheels to the high pressure air nozzle and the jet direction is fixed and remains unchanged even during the movement of the head to guide the grinding wheel.
Besondere Entsorgungsprobleme wie bei der Verwendung von Kühlschmiermitteln oder anderen Flüssigkeiten oder konstruktiv aufwendige Vorrichtungen zum  Special disposal problems as in the use of coolants or other liquids or structurally complex devices for
Auffangen von flüssigem Kühlmittel sind nicht erforderlich. Durch das Freiblasen der Halbzeug-Oberfläche vor dem Schleifen kann die Oberflächengüte des zu behandelnden Schleifgutes erheblich verbessert werden. Im Gegensatz zu Collecting liquid coolant is not required. By blowing out the semifinished surface before grinding, the surface quality of the be treated significantly improved. In contrast to
Fräsbearbeitungen, bei denen Späne anfallen, die anschließend entsorgt werden müssen, lässt sich der weggeblasene Schleifstaub zum Beispiel durch eine Milling operations that produce chips, which then have to be disposed of, can be the blown sanding dust, for example by a
Absaugung erheblich leichter entsorgen. Dispose of the exhaust much easier.
Nach einer weiteren Ausgestaltung der Erfindung sind am Schleifkopf zwei oder mehr Hochdruckluftdüsen beidseitig der oder jeder Schleifscheibe angeordnet, so dass bei einem Schleifrichtungswechsel mindestens eine Hochdruckluftdüse betreibbar ist, die vor der Schleifbearbeitung Partikel wegbläst. Auf diese Weise ist auch eine pendelnde oder hin und her führende Schleifbearbeitung ohne Umrüstung des Schleifkopfes möglich. Die Druckbeaufschlagung der Düsen kann durch dieselbe Steuerung erfolgen, die auch den Richtungswechsel beim Schleifen einleitet. According to a further embodiment of the invention, two or more high-pressure air nozzles are arranged on both sides of the grinding wheel or each grinding wheel, so that at least one high-pressure air nozzle is operable at a direction of grinding, which blows away particles before grinding. In this way, a swinging or reciprocating grinding machining is possible without retooling the grinding head. The pressurization of the nozzles can be done by the same control, which also initiates the change of direction during grinding.
Vorhandene Hochdruckluftdüsen können abwechselnd aus ein und derselben Druckluftquelle gespeist werden. Existing high-pressure air nozzles can be fed alternately from one and the same source of compressed air.
Durch Verwendung einer Flachstrahldüse können vorzugsweise nicht nur die vor der Schleifscheibe liegenden beziehungsweise anhaftenden Partikel, sondern auch beim Schleifen entstehende Schleifstäube unmittelbar weggeblasen werden. By using a flat jet nozzle, preferably not only the particles lying or adhering in front of the grinding wheel but also grinding dust resulting from grinding can be blown off immediately.
Die verwendeten Drücke liegen vorzugsweise bei mindestens 2 bar (2x105Pa), insbesondere zwischen 5 bar und 120 bar (5x105Pa bis 12x106Pa). Nach einer weiteren Ausgestaltung der Erfindung beträgt die Luftaustrittsgeschwindigkeit an der Düse mindestens 100 m/sec, vorzugsweise mehr als 200 m/sec. The pressures used are preferably at least 2 bar (2 × 10 5 Pa), in particular between 5 bar and 120 bar ( 5 × 10 5 Pa to 12 × 10 6 Pa). According to a further embodiment of the invention, the air outlet velocity at the nozzle is at least 100 m / sec, preferably more than 200 m / sec.
Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt. Es zeigen: An embodiment of the invention is shown in the drawings. Show it:
Fig. 1 eine Prinzipskizze zur Darstellung der nach dem Stand der Fig. 1 is a schematic diagram for illustrating the state of the
Technik bekannten Schleifbehandlung einer Bramme,  Technique known grinding treatment of a slab,
Fig. 2 eine Prinzipskizze gemäß der vorliegenden Erfindung mit einer zusätzlich verwendeten Hochdruckluftdüse,  2 is a schematic diagram according to the present invention with an additionally used high-pressure air nozzle,
Fig. 3 eine erste Ausführungsform eines Schleifkopfes mit einer  Fig. 3 shows a first embodiment of a grinding head with a
Schleifscheibe sowie einer einzigen Düse und Fig. 4 eine zweite Ausführungsform eines Schleifkopfes mit einer Grinding wheel and a single nozzle and Fig. 4 shows a second embodiment of a grinding head with a
Schleifscheibe und zwei montierten Hochdruckluftdüsen.  Grinding wheel and two mounted high pressure air nozzles.
Die in Fig. 1 dargestellte Schleifscheibe 10 dient zur Behandlung einer Bramme 11 , wobei im dargestellten Beispiel die Bramme entlang des Pfeiles 12 bewegt wird, bis die Schleifarbeit über die gesamte Brammenlänge geleistet wurde. Anschließend wird die Bramme 1 1 in vertikaler Richtung zur Längsachse vorgerückt, um die nächste Schleifbahn in längsaxialer Richtung zu durchlaufen. The grinding wheel 10 shown in Fig. 1 is used to treat a slab 11, wherein in the example shown, the slab is moved along the arrow 12 until the grinding work was done over the entire slab length. Subsequently, the slab 1 1 is advanced in the vertical direction to the longitudinal axis to pass through the next slideway in the longitudinal axial direction.
Verbliebene Schleifkörner oder Metall- oder Staubkörner sowie Defekteinschlüsse an der Brammenoberfläche sind durch Bezugszeichen 13 angedeutet. Remaining abrasive grains or metal or dust grains as well as defect inclusions on the slab surface are indicated by reference numeral 13.
Nach der vorliegenden Erfindung und wie aus Fig. 2 ersichtlich, wird während des Schleifvorgangs die Bramme in Richtung des Pfeiles 12 bewegt. Das ortsfeste Schleifrad 10 befindet sich an einem nicht dargestellten Schleifkopf, der zusätzlich als Halterung für eine Düse 14 dient, die zur Vorderseite hin abgeflacht ist und einen Düsenschlitz bildet, aus dem unter hohem Druck Luft strömt. Der Luftstrahl ist so gerichtet, dass er die vor der Schleifscheibe liegenden Körner und Stäuben ebenso wegbläst wie entstehende Schleifstäube die durch den Schleifvorgang, beim According to the present invention and as shown in FIG. 2, the slab is moved in the direction of the arrow 12 during the grinding process. The fixed grinding wheel 10 is located on a grinding head, not shown, which additionally serves as a support for a nozzle 14 which is flattened towards the front and forms a nozzle slot, from which air flows under high pressure. The air jet is directed so that it blows away the grains and dusts lying in front of the grinding wheel as well as the resulting sanding dust caused by the grinding process
Abrieben des Schleifrades erzeugt werden. Abrasion of the grinding wheel can be generated.
Wie aus Fig. 3 ersichtlich sind die Schleifscheibe 10 sowie die Hochdruckluftdüse 14 an einem Schleifkopf 15 befestigt. As can be seen in FIG. 3, the grinding wheel 10 and the high-pressure air nozzle 14 are fastened to a grinding head 15.
Die relative Fortbewegungsrichtung des Schleifkopfes in Bezug auf die Bramme 1 1 ist durch Pfeil 16 gekennzeichnet. The relative direction of movement of the grinding head with respect to the slab 1 1 is indicated by arrow 16.
Die Ausführungsform nach Fig. 4 unterscheidet sich von der vorher beschriebenen dadurch, dass zwei Hochdruckluftdüsen 141 und 142 vorgesehen sind, die beidseitig versetzt zur Schleifscheibe 10 angeordnet sind und die alternierend betrieben werden, so dass Schleifscheibenbewegungen zur Bramme in zwei Richtungen (siehe Doppelpfeil 17) erfolgen. Es ist jeweils die Hochdruckluftdüse mit Druckluft beaufschlagt, welche leicht versetzt unbearbeitete Schleifbereiche sowie entstehenden Schleifstaub freibläst. Der austretende Luftstrom ist mit Bezugszeichen 18 gekennzeichnet. The embodiment according to FIG. 4 differs from that described above in that two high-pressure air nozzles 141 and 142 are provided, which are arranged offset on both sides of the grinding wheel 10 and which are operated alternately, so that grinding wheel movements to the slab in two directions (see double arrow 17). respectively. It is the high-pressure air nozzle with compressed air subjected to which slightly offset unprocessed grinding areas as well as resulting grinding dust. The exiting air flow is identified by reference numeral 18.

Claims

Ansprüche claims
1. Vorrichtung zum Schleifen eines stranggegossenen Produktes, insbesondere einer Bramme (1 1 ), eines Knüppels oder Blocks, mit mindestens einer rotierend betriebenen Schleifscheibe (10), die an einem Schleifkopf (15) befestigt ist, Device for grinding a continuously cast product, in particular a slab (1 1), a billet or block, with at least one rotating grinding wheel (10) attached to a grinding head (15),
dadurch gekennzeichnet, dass  characterized in that
an dem Schleifkopf (15) mindestens eine Hochdruckluftdüse (14) angeordnet ist, die das stranggegossene Produkt vor der Schleifbearbeitung von anhaftenden oder aufliegenden Partikeln freibläst.  at least one high-pressure air nozzle (14) is arranged on the grinding head (15), which floats the continuously cast product prior to the grinding of adhering or resting particles.
2. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass am 2. Device according to claim 1, characterized in that on
Schleifkopf (15) zwei oder mehr Hochdruckluftdüsen (141 , 142) beidseitig des oder in der Schleifscheibe (10) angeordnet sind, so dass bei einem  Grinding head (15) two or more high pressure air nozzles (141, 142) on both sides of or in the grinding wheel (10) are arranged, so that at a
Schleifrichtungswechsel mindestens eine Hochdruckluftdüse (141 , 142) betreibbar ist, die vor der Schleifbearbeitung Partikel wegbläst.  Grinding direction change at least one high-pressure air nozzle (141, 142) is operable, which blows away particles before grinding.
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die 3. Apparatus according to claim 1 or 2, characterized in that the
Düse (14) relativ zur Schleifscheibe (10) so angeordnet ist, dass sie sowohl vor der Schleifbearbeitung Partikel wegbläst als auch zum unmittelbaren Wegblasen des entstehenden Schleifstaubes dient.  Nozzle (14) relative to the grinding wheel (10) is arranged so that it blows away both particles before grinding and serves for direct blowing away of the resulting grinding dust.
4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Hochdruckluftdüse einen Luftdruck von mindestens 2x105 Pa, 4. Device according to one of claims 1 to 3, characterized in that the high pressure air nozzle has an air pressure of at least 2x10 5 Pa,
vorzugsweise 5x105 Pa bis 12x106 Pa erzeugt. preferably 5x10 5 Pa to 12x10 6 Pa produced.
5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Hochdruckluftdüse als Flachstrahldüse ausgebildet ist und/oder zur Abstrahlung von Luft mit einer Luftaustrittsgeschwindigkeit von mindestens 100 m/sec, vorzugsweise mindestens 200 m/sec ausgebildet ist. 5. Device according to one of claims 1 to 4, characterized in that the high pressure air nozzle is designed as a flat jet nozzle and / or for the emission of air with an air outlet speed of at least 100 m / sec, preferably at least 200 m / sec is formed.
PCT/DE2019/100336 2018-04-24 2019-04-12 Grinding device WO2019206365A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP19720770.7A EP3784433A1 (en) 2018-04-24 2019-04-12 Grinding device
CN201980015395.3A CN111757791A (en) 2018-04-24 2019-04-12 Grinding apparatus
US17/047,586 US20210114169A1 (en) 2018-04-24 2019-04-12 Grinding device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018109804.9A DE102018109804A1 (en) 2018-04-24 2018-04-24 grinder
DE102018109804.9 2018-04-24

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US (1) US20210114169A1 (en)
EP (1) EP3784433A1 (en)
CN (1) CN111757791A (en)
DE (1) DE102018109804A1 (en)
WO (1) WO2019206365A1 (en)

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DE19526280A1 (en) * 1995-07-19 1997-01-23 Schloemann Siemag Ag Grinding device
DE10148183A1 (en) 2001-09-28 2003-04-17 Evertz Egon Kg Gmbh & Co Device for grinding a semi-finished product, especially in the form of steel slabs comprises a grinding arm having a longitudinal axis, a drive unit arranged on the grinding arm, and a grinding disk arranged as a grinding tool on the arm
WO2007137748A2 (en) * 2006-05-26 2007-12-06 Sms Demag Ag Device and method for producing a metal strip by continuous casting
EP2032285A1 (en) 2006-05-26 2009-03-11 SMS Demag AG Device for producing a metal strip by continuous casting

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