EP3623067A1 - System and method for determining the number of revolutions of a roller - Google Patents

Abstract

The invention relates to a system for determining the number of revolutions of a roller (14), with a roller (14) for processing products, in particular made of metal material, the roller (14) having a bale section (12) and bearing journals (6, 6 '), Via which the roller (14) can be rotatably supported and rotated, and with a rotation sensor for determining a rotational movement of the roller (14), the roller having a sensor holder (10) for receiving at least one component of the rotation sensor. The object of creating a system which allows the running times of a roller (14) to be determined in a reliable manner is achieved in that the rotation sensor has a storage means (22) for storing information on the number of revolutions of the roller (14) Storage means (22) is received by the sensor holder (10). The invention further relates to a method for determining the number of revolutions of a roller (14) using the system according to the invention, a method for producing the system according to the invention and the use of a roller (14).

Description

The invention relates to a system for determining the number of revolutions of a roller, with a roller for processing products, in particular made of metal material, the roller having a bale section and bearing journal, via which the roller can be rotatably supported and rotated, and with a rotation sensor for determining a Rotational movement of the roller, the roller having a sensor receptacle for receiving at least one component of the rotation sensor.

Furthermore, the invention relates to a method for determining the number of revolutions of rollers using the system according to the invention.

The invention further relates to a method for producing the system according to the invention and to the use of a roller.

Rollers of the type in question are intended in particular for the hot or cold rolling of flat products, long products or profiles made of metal material. Flat products are typically strips, sheets or blanks made of steel or non-ferrous metal. Rolls for such applications can have dimensions of up to 1 m in diameter and up to 10 m in length.

To manufacture such rolls, a roll base made of cast iron or a suitable steel is first provided, which is formed in particular by casting or forging. The roller base body has a bale area, which is intended for contact with the rolling stock during rolling, and bearing journals formed on the bale area, by means of which the roller can be rotatably supported and rotated in the respective roll stand.

The peripheral surface of the bale area comes into contact with the rolling stock during rolling under high pressure or friction loads and, if appropriate, high temperature, the peripheral surface being additionally exposed to corrosion. Due to the resulting wear, the rollers must be replaced or completely replaced after certain running times.

For example, the contact surface on the outside of the bale area of rollers is provided with a wear-resistant layer, such as a roller shell. The design of the wear-resistant layer with properties such as its thickness and material is selected in many applications on the basis of the conditions during rolling, for example depending on the material and thickness of the rolling stock, the degree of rolling to be set and the temperature during rolling.

For certain rolling processes, it is therefore necessary for the work rolls to be matched to the respective production conditions and for the work rolls to be replaced in a rolling mill in order to enable the production of special rolled products.

Typically, run times are monitored in the roll stands to record the wear of rollers. Since the work rolls in the roll stands themselves are regularly replaced in order to provide the correspondingly designed rolls for specific pass passes and materials of the rolling stock, a reliable determination of the running times of individual rolls is not readily guaranteed. For example, individual rolls can be used in different rolling mills and stands Use, so that it is no longer traceable which mileage a roller has completed since a previous overhaul.

Against the background of the prior art explained above, the task has arisen of creating a system which allows the running times of a roll to be determined in a reliable manner. In particular, the invention should make it possible to determine the degree of wear of the rolls in a simple manner and independently of the roll stand used.

Likewise, a method for determining the number of revolutions of rolls should be specified, which also allows the number of revolutions of a roll to be determined independently of the use of the roll in different roll stands.

Finally, a method for producing the system for determining the number of revolutions of rollers, which enables a roller to be made available, the running time of which can be reliably determined.

The invention has achieved this object with respect to the system by the system specified in claim 1.

To achieve this object in relation to the method for determining the number of revolutions of rollers, the invention proposes a method with the features mentioned in claim 6.

To achieve this object with regard to methods for producing the system, the invention proposes a method according to the features of claim 9.

The object is further achieved by use according to claim 12.

Advantageous refinements of the invention are specified in the dependent claims and are explained in detail below.

The system according to the invention comprises a roller for processing products, in particular made of metal material, such as flat products, long products or profiles, the roller having a bale section and bearing journal, by means of which the roller can be rotatably supported and rotated, and a rotation sensor for determining a rotary movement of the Roller, the roller having a sensor receptacle for receiving at least one component of the rotation sensor. The roller is preferably designed as a work roller and is intended to come into direct contact with the rolling stock.

The rotation sensor is set up to determine a rotational movement of the roller, in particular by measuring the angle of rotation or the rotational speed of the roller. The rotation sensor can also detect the passage of a specific angular position through the roller, the angular position corresponding, for example, to a full revolution or a predetermined fraction of a revolution. Via the rotation movement determined by the rotation sensor, a number of revolutions information can thus be obtained which, for example, indicates the total number of revolutions of the roller. The total number of revolutions can mean the revolutions of the roller based on a reference, for example since the roller was manufactured or the roller was renewed and serviced. The rotational speed information can also be further indicative of rotational speeds of the roller.

According to the invention, the rotation sensor now has a storage means for storing the number of revolutions of the roller base body, the storage means being received by the sensor receptacle. The storage means processes, for example, the data of the rotation sensor or receives processed data of the rotation sensor, which are stored as number of revolutions information by the storage means. The storage means is preferably objective (ie "touchable") and allows manual reading and / or machine or computer-assisted reading.

The particular advantage of the invention is that the storage means is received by the sensor holder and thus the storage means is (clearly) assigned to the corresponding roller. The determined number of revolutions is thus stored not only via a roll stand or via the control of a rolling mill, but in particular directly on or in the roll via the storage means. The storage means can, for example, be non-detachably (i.e. not detachable without destroying the sensor holder) with the roller. Correspondingly, the running time of the roll can be determined independently of the respective roll stand via the number of revolutions information. The running time of the roller can thus also be reliably determined if the roller is used in various roll stands, rolling mills or production locations, since the information about the number of revolutions about the storage means is stored directly or indirectly on the roller itself. As a result, the number of revolutions of the roller can be reliably determined.

The rotation speed information can be read out manually, for example by providing a display of the rotation speed information on the roller. However, the rotation sensor preferably comprises a wireless communication means for reading out the rotation speed information of the roller. The means of communication is for this set up to connect to and communicate with other devices via a (wireless) communication system. The communication means can be set up for communication by means of radio frequency identification (RFID) and / or near field communication (NFC), which enables simple and short-range reading of the rotational speed information. The means of communication can be active or passive, a passive means of communication in the roller advantageously not requiring its own energy supply. Further examples of a communication system are a local area network (LAN), a large area network (WAN), a wireless network (for example according to the IEEE 802.11 standard or the Bluetooth (LE) standard), a mobile radio network, a telephone network and / or that Internet.

The storage means can be designed to be computer-readable. For example, the storage means is designed as volatile or non-volatile random access memory (RAM) such as e.g. NOR flash memory or with sequential access such as NAND flash memory and / or memory with read-only access (ROM) or read-write access.

To provide energy, the rotation sensor can comprise an energy supply means which, for example, stores energy. For this purpose, an accumulator can be provided, which in particular supplies the storage means and components of the rotation sensor accommodated in the sensor receptacle with electrical energy. The energy supply means can comprise a generator which is driven, for example, by the rotary movement of the roller, thereby ensuring that the rotation sensor is supplied with energy during operation of the roller. The energy supply means can also be used to provide mechanical energy and can be driven, for example, by the rotary movement of the roller. In particular, at least one spring can be provided which has mechanical energy via a spring tension saves. Here, the spring can be put under tension, for example, by the rotary movement of the roller, so that the energy supply means continues to store mechanical energy during operation.

If the rotation sensor comprises a gyrometer and / or pedometer for determining the number of revolutions of the roller body, the number of revolutions can be determined by mechanical means. In comparison to electronic means, such mechanical means can be particularly robust against the effects on the rotation sensor during rolling, for example deformation of the roller and high temperatures. A gyrometer and / or a pedometer can thus be integrated into the roller, for example in the roller base body and in particular in the bearing journal or bale area. With mechanical means in the rotation sensor, an electrical circuit and an electronic power supply can be dispensed with, which further improves the reliability of the system.

Likewise, the rotation sensor can comprise an optical element and an optical sensor means, for example a marking, which is read out by an optical sensor means, for example on the basis of a laser. One of the elements can be located on the roller and rotate with the roller, while the further element is fixed, for example on the roll stand. A magnetic element and a magnetic sensor means, for example a Hall sensor for detecting a permanent magnet or electromagnet, are also conceivable.

• Bereitstellen einer Walze zur Bearbeitung von Produkten insbesondere aus Metallwerkstoff und Aufnahme der Walze in einem Walzgerüst;
• Bearbeiten von Produkten mittels der Walze über Rotation der Walze und Ausübung von Druck durch die Walze;
• Erfassen der Rotation der Walze über den Umdrehungssensor;
• Speichern der Umdrehungszahlinformation im Speichermittel; und
• Auslesen der Umdrehungszahlinformation aus dem Speichermittel.

According to the above explanations, the method according to the invention for determining the number of revolutions of rollers using the system according to the invention comprises at least the following steps:

• Providing a roller for processing products, in particular made of metal material, and receiving the roller in a roll stand;
• Processing of products by means of the roller by rotating the roller and exerting pressure by the roller;
• Detecting the rotation of the roller via the rotation sensor;
• Storing the revolution information in the storage means; and
• Reading the number of revolutions from the storage means.

In a first embodiment of the method for determining the number of revolutions of rolls, the number of revolutions is read out of the storage means when or after the roll is removed from the roll stand. Accordingly, it is not necessary for the number of revolutions to be read out or stored during ongoing operation, for example from the roll stand or a control device of the rolling mill. The roller can be used for one or more production runs, the running time of the roller being read out, for example, after the production runs have ended, for example when the roller changes the production location or is being serviced.

Alternatively or additionally, however, the rotational speed information can also be read out of the storage means by means of the roller during the processing of products, for example via a wireless communication means.

In a further embodiment of the method for determining the number of revolutions of rollers, electrical and / or mechanical energy is provided for the revolution sensor by an energy supply means, the energy supply means being driven via the rotary movement of the roller. For example, a generator is provided as the energy supply means for providing electrical energy. A mechanical energy supply means can also be provided, which is based, for example, on spring force.

• Bereitstellen eines Walzenrohlings für eine Walze zur Bearbeitung von Produkten insbesondere aus Metallwerkstoff mit einem Ballenabschnitt und Lagerzapfen;
• Ausbilden einer Walze aus dem Walzenrohling;
• Einbringen einer Sensoraufnahme zur Aufnahme mindestens einer Komponente eines Umdrehungssensors in den Walzenrohling oder die Walze;
• Bereitstellen eines Umdrehungssensors zur Ermittlung einer Drehbewegung der Walze, wobei der Umdrehungssensor ein Speichermittel zur Speicherung einer Umdrehungszahlinformation der Walze aufweist; und
• Aufnehmen des Speichermittels von der Sensoraufnahme.

In addition, the method according to the invention for producing the system according to the invention comprises at least the following work steps:

• Providing a roll blank for a roll for processing products, in particular made of metal material, with a bale section and bearing journal;
• Forming a roll from the roll blank;
• Introducing a sensor receptacle for receiving at least one component of a rotation sensor into the roll blank or the roll;
• Providing a rotation sensor for determining a rotational movement of the roller, the rotation sensor having a storage means for storing a number of revolutions information of the roller; and
• Take up the storage medium from the sensor holder.

In practice, for example, a blank can be made from cast steel or cast iron to provide the roller base body. Steels suitable for this are typically soft steels with high toughness. Examples of this are tool steels and tempered steels. In the course of the further process, the roll base body of the roll to be produced can be produced or shaped from the blank.

The introduction of a sensor receptacle into the roller base body or the roller includes, for example, the preparation of a section of the roller blank or the roller for attaching the respective component of the rotation sensor. For example, part of the surface is prepared for fastening the component and / or a fastening means for the component is attached. Likewise, the sensor holder can be incorporated into the material of the roller base body or the roller, for example by removing material. The sensor holder can be machined Machining methods are introduced, for example by drilling, cutting or milling in the roll blank or in the roll.

In one embodiment of the method for manufacturing the system, the formation of the roller comprises applying a wear-resistant layer on the bale section of the roller blank.

The material of the wear-resistant layer can be applied to the roller base body using various methods, for example by means of cladding or hot isostatic pressing (HIP), the roller base body and wear-resistant layer being firmly connected to one another. For example, a reshaping corresponding to that in the EP 3 141 335 A1 mentioned procedures performed. In principle, steels with sufficient wear resistance for the intended use of the roller are suitable for the wear-resistant layer.

The blank can have a bale section and bearing journal even before the wear-resistant layer is applied. Alternatively, with the further method, for example, pins can be welded to the respective end face of the bale section or coupled in a mechanically acting connection.

Other work steps can be carried out between the work steps mentioned or after the work steps mentioned, insofar as this is expedient. This includes, for example, the possibility of heat treatment of the roller after the wear-resistant layer has been applied in order to improve the mechanical properties of the roller as a whole or in individual sections thereof. The pins or the bale area between the pins can thus be subjected to a heat treatment which comprises austenitizing and tempering. A heat treatment is preferably carried out before the storage medium or other components of the rotation sensor are received the sensor holder performed so that the components of the rotation sensor are not affected by the heat treatment.

Mechanical treatment of the roller is also possible, for example a final mechanical treatment to meet the requirements for surface quality and dimensional stability of the roller. For example, machining processes can be used for this.

The use of a roller for processing products, in particular made of metal material, in a system described above is also disclosed, for example for producing flat products, long products and / or profiles, in particular made of metal material. In particular, the use of the roller for processing strips and / or sheets or products with round cross-sectional shapes is provided. The roller can be prepared accordingly for use in the system, for example by inserting a sensor holder.

Fig. 1

einen Rohling für einen Walzengrundkörper in seitlicher Schnittansicht; und

Fig. 2

eine Walze mit einem Umdrehungssensor in seitlicher Schnittansicht.

The invention is explained in more detail below with reference to a drawing showing exemplary embodiments. Their figures show schematically:

Fig. 1

a blank for a roller body in a side sectional view; and

Fig. 2

a roller with a rotation sensor in a side sectional view.

Fig. 1 shows a blank 2 for a roller base body in a lateral sectional view, the roller base body being intended for the production of a roller. The blank 2 comprises a core section blank 4, which is cylindrical about the axis A and made of a tool steel or tempering steel, as well as bearing journals 6, 6 'which are arranged on the end faces 8, 8' of the core section blank 4. The bearing pins 6, 6 'can be formed in one piece with the core section blank 4, for example by forging, or can be joined to the end faces 8, 8'. The bearing pins 6, 6 'are designed so that the roller to be manufactured can be rotatably supported and rotated therewith.

The blank also has a sensor receptacle 10 for receiving at least one component of a rotation sensor, which is introduced through a bore in the region of the bearing journal 6.

The core section blank 4 forms a ball area 12 on the outer circumferential surface, which can be coated with a wear-resistant layer.

This shows Fig. 2 a roller 14, like this over the blank 2 Fig. 1 can be obtained. The roller 14 optionally has a wear-resistant layer 18 on the outer circumferential surface 16, which layer can be applied to the core section blank, for example by means of a HIP process, in particular a common reshaping to form the roller 14. After the wear-resistant layer 18 has been applied, the roller 14 can be heat-treated. It is also possible to design the roller 14 without the wear-resistant layer 18 shown, the outer peripheral surface 16 being formed from the core section blank 4. Here, heat treatment of the roller 14 can also be carried out.

A rotation sensor for determining a rotary movement of the roller 14 is provided, which comprises a gyrometer 20. As an alternative to the gyrometer 20, a pedometer, a marking with a laser measuring device or a magnetic element with a Hall sensor can be provided as components for the rotation sensor. The rotation sensor comprises a storage means 22, both the gyrometer 20 and the storage means 22 being received by the sensor receptacle 10. The spatial position of the roller 14 and thus the angle of rotation of the roller 14 are determined via the gyrometer 20, for example when the roller 14 is rotated in a roll stand when processing products such as flat products. Information about the number of revolutions can be obtained via the angle of rotation, which indicates, for example, the total number of revolutions of the roller or an entire angle of rotation. The storage means 22 allows the number of revolutions information to be stored or stored, so that, for example, the entire number of revolutions is stored in the storage means 22 while the roller is in operation. The storage means 22 permits machine or computer-assisted reading out via a wireless communication means based on RFID or NFC technology.

Accordingly, the number of revolutions of the roller 14 and thus its running time can be determined independently of the respective place of use or of the respective rolling train. For example, the number of revolutions information is only read out from the storage means 22 when or after the roller 14 is removed from a roll stand. The speed information can also be read out during operation.

To supply the rotation sensor with electrical energy, an energy supply means such as an accumulator or a generator driven by the rotary movement of the roller 14 can also be provided. A mechanical energy supply means can also be provided, for example a spring which is put under tension by the rotary movement of the roller.

REFERENCES

2nd

blank

4th

Core section blank

6, 6 '

Bearing journal

8, 8 '

End faces

10th

Sensor mount

12th

Bale area

14

roller

16

Outer peripheral surface

18th

wear-resistant layer

20th

Gyrometer

22

Storage means

A

Rotation axis of the blank 2 or the roller 14

Claims (12)

System for determining the number of revolutions of a roller (14), with a roller (14) for processing products, in particular made of metal material, the roller (14) having a bale section (12) and bearing journals (6, 6 ') via which the roller (14) can be rotatably supported and rotated, and with a rotation sensor for determining a rotary movement of the roller (14), the roller having a sensor receptacle (10) for receiving at least one component of the rotation sensor, characterized in that the rotation sensor has a storage means ( 22) for storing a number of revolutions of the roller (14), the storage means (22) being received by the sensor receptacle (10). System according to claim 1 or 2, characterized in that the rotation sensor comprises a wireless communication means for reading out the rotation speed information of the roller (14). System according to one of the preceding claims, characterized in that the rotation sensor comprises an energy supply means for providing electrical and / or mechanical energy. System according to one of the preceding claims, characterized in that the rotation sensor comprises a gyrometer (20) and / or pedometer for determining the rotational movement of the roller (14). System according to one of the preceding claims, characterized in that the rotation sensor comprises an optical element and an optical sensor means and / or a magnetic element and a magnetic sensor means. A method for determining the number of revolutions of a roller (14) using the system according to one of claims 1 to 5, comprising at least the following steps: - Providing a roller (14) for processing products, in particular made of metal material, and receiving the roller (14) in a roll stand; - Processing products by means of the roller (14) via rotation of the roller (14) and application of pressure by the roller (14); - Detecting the rotation of the roller (14) via the rotation sensor; - storing the number of revolutions information in the storage means (22); and - Reading out the number of revolutions from the storage means (22). Method according to Claim 6, characterized in that the number of revolutions information is read out from the storage means (22) when or after the roll (14) is removed from the roll stand and / or the number of revolutions information is read out from the storage means (22) during processing. A method according to claim 6 or 7, characterized in that electrical and / or mechanical energy is provided for the rotation sensor by an energy supply means, the energy supply means being driven by the rotary movement of the roller (14). A method of manufacturing the system according to any one of claims 1 to 5, comprising at least the following steps: - Providing a roller blank (4) for a roller (14) for processing products, in particular made of metal material, with a bale section (12) and bearing journals (6, 6 '); - Forming a roller (14) from the roller blank (4); - Introducing a sensor holder (10) for holding at least one component of a rotation sensor in the roller blank (4) or the roller (14); - Providing a rotation sensor for determining a rotational movement of the roller (14), the rotation sensor having a storage means (22) for storing information on the number of revolutions of the roller (14); and - Picking up the storage medium (22) from the sensor holder (10). A method according to claim 9, characterized in that the formation of the roller (14) comprises applying a wear-resistant layer (18) on the bale section (12) of the roller blank (4). A method according to claim 9 or 10, characterized in that the roller (14) is heat-treated, in particular after the wear-resistant layer (18) has been applied. Use of a roller (14) for processing products, in particular made of metal material, in a system according to one of claims 1 to 5.

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