EP2814623B1 - Verfahren und vorrichtung zur schmierung der walzen eines walzgerüstes - Google Patents

Verfahren und vorrichtung zur schmierung der walzen eines walzgerüstes Download PDF

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Publication number
EP2814623B1
EP2814623B1 EP13704399.8A EP13704399A EP2814623B1 EP 2814623 B1 EP2814623 B1 EP 2814623B1 EP 13704399 A EP13704399 A EP 13704399A EP 2814623 B1 EP2814623 B1 EP 2814623B1
Authority
EP
European Patent Office
Prior art keywords
water
mixing
oil
supply line
control unit
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP13704399.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2814623A1 (de
Inventor
Thomas BRAIDT
Reinhard Karl
Christian Lehner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Primetals Technologies Austria GmbH
Original Assignee
Primetals Technologies Austria GmbH
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 Primetals Technologies Austria GmbH filed Critical Primetals Technologies Austria GmbH
Priority to EP13704399.8A priority Critical patent/EP2814623B1/de
Publication of EP2814623A1 publication Critical patent/EP2814623A1/de
Application granted granted Critical
Publication of EP2814623B1 publication Critical patent/EP2814623B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0239—Lubricating
    • B21B45/0245—Lubricating devices
    • B21B45/0248—Lubricating devices using liquid lubricants, e.g. for sections, for tubes
    • B21B45/0251—Lubricating devices using liquid lubricants, e.g. for sections, for tubes for strips, sheets, or plates

Definitions

  • the invention relates to a method and a device for lubricating the rolls of a roll stand, in particular for roll gap lubrication in a roll stand for rolled strip, wherein by means of a mixing and spraying device, which is supplied via a first supply line water and a second supply line oil, a mixture of Produces water and oil and this mixture is sprayed onto the belt and / or in the nip and / or on at least one of the rolls of the mill stand.
  • the mixer, the pipes between mixer and nozzle, and the nozzles are even rinsed with hot water, optionally with the addition of one or more chemical cleaning agents, or blown free.
  • a rolling gap lubrication is for example the EP 2 040 860 B1 known.
  • the rolling process is interrupted.
  • the heated water is kept in a thermally insulated hot water tank.
  • the provision of the hot water, as well as the supply line via a third thermally insulated line is associated with a corresponding technical effort.
  • the preamble of claims 1 and 11 is based on this document. Presentation of the invention.
  • the hot water used for cleaning purposes is generated by a heating device, by means of which the water flowing in the water supply line is heated quasi in line.
  • This heater is permanently installed and only during a time interval, which is specified by a controller, active.
  • a controller active.
  • a plant for roll gap lubrication can be constructed easily.
  • the cleaning of the rolling gap lubrication can be carried out more easily.
  • the power supply of the heating device may be provided in different ways, for example electrically or with another fuel, e.g. Gas or oil.
  • the heating device can be operated electrically, for example as a water heater.
  • a water heater has several advantages. Firstly, the required construction volume in a rolling mill is much lower compared to a hot water tank. The water temperature required for cleaning can be controlled by electronic control of the Energy supply to the individual resistance heating elements are very precisely specified and regulated. As a result, the energy requirement can be adapted to the degree of pollution.
  • control unit uses a process variable from the roll lubrication to determine the time interval in which the cleaning takes place, for example a measuring signal in the water supply line which indicates the degree of contamination of the mixing and spraying device.
  • a measurement signal can be obtained for example by means of a sensor which is arranged in the water supply line.
  • the sensor may be a pressure sensor or a flow sensor.
  • control unit controls the heating device so that the water flowing to the mixing and spraying device is heated to a predeterminable temperature value of more than 60 ° C. and controlled to this value.
  • the saponification of the emulsion can be reduced.
  • soft water is favorable for an electric instantaneous water heater, because the formation of lime on the heating elements is lower.
  • the mixing and spraying device is formed from a number of nozzle-mixer units, wherein each nozzle-mixer unit is supplied separately both water and oil.
  • each nozzle is assigned a separate mixing unit.
  • Each nozzle mixer unit is structurally compact in one unit and includes both the mixing function and the spray function. As a result, there is virtually no Connecting pipes between mixer and nozzle in which saponification could occur.
  • the residence time of the emulsion / dispersion in the assembly is very low, which reduces soap formation. As a result, the rolling process must be interrupted less for the purpose of cleaning the nip lubrication.
  • nozzle mixer units Maintenance work can be facilitated if each of these nozzle mixer units is replaced by a quick-acting closure, e.g. a bayonet lock can be released from its fixture. This allows soiled units to be changed very quickly during a maintenance shutdown.
  • a quick-acting closure e.g. a bayonet lock can be released from its fixture. This allows soiled units to be changed very quickly during a maintenance shutdown.
  • FIG. 1 schematically illustrates an embodiment of the device according to the invention for lubricating the rolls of a rolling stand. From the mill stand, for the sake of clarity, only the two work rolls 12 are shown, in the nip of which the rolled strip 8 is rolled.
  • This mixing and spraying device 10 is composed of a number of nozzle-mixer units 1, each of which is supplied with oil and water.
  • each of these nozzle mixer units 1 acts as a mixer, which processes oil and water into a homogeneous emulsion / dispersion.
  • each of these nozzle-mixer units 1 acts as a spray member which introduces the emulsion into the roll gap in the form of a spray jet. This introduction can be carried out by spraying in the direction of the nip, or in the direction of work rolls and / or in the direction of the facing surface of the rolled strip.
  • the dispersion is a water-oil mixture formed from minute oil droplets in water.
  • FIG. 1 For example, three nozzle mixer units 1 can be seen at the top of the rolled strip 8 and three at the bottom of the rolled strip 8.
  • the upper arrangement of the nozzle mixer units 1 is supplied by an upper supply branch 4, the lower of a lower supply branch 5, both with oil and water.
  • supply branches 4, 5 are fed by a first supply line 3 with water and by a second supply line 2 with oil.
  • a heating device 6 is permanently installed, by means of which the water flowing from an unspecified source to the mixing and spraying device 10 can be heated for the purpose of cleaning.
  • This heater 6 is designed as a water heater, which has a plurality of heating elements designed as electrical resistance heating. Construction and installation of a water heater can be assumed to be known and need not be explained in detail here.
  • the power supply to the heating elements of the water heater is controlled electronically by means of a microcomputer.
  • the second supply line 2 supplies the mixing and spraying device 10 with oil. It also splits likewise in an upper supply branch 4 and a lower supply branch 5. In each of these branches 4, 5, a metering pump 7 is connected in each case. Each of these metering pumps 7 is controlled by the control unit 9 so that the amount of oil supply in the upper branch 4 and lower branch 5 can be specified separately.
  • the mixing and spraying device 10 consists of a plurality of nozzle-mixer units 1.
  • These nozzle-mixer units 1 are each designed as a structural unit. That is, seen in the flow direction mixer and spray organ are arranged locally immediately one behind the other.
  • the residence times of the emulsion / dispersion in this unit are very short.
  • the cleaning process is relatively simple, since less saponification takes place.
  • the time for the beginning of a cleaning phase, as well as the duration of a rinsing process is predetermined by the control unit 9.
  • the control unit 9 takes into account the measurement signal of a sensor 13 in the water supply line 3.
  • the measurement signal delivered by the sensor 13 images the degree of soiling of the mixing and spraying device 10.
  • the sensor 13 is a pressure sensor.
  • FIG. 1 shows this pressure sensor 13 downstream of the water heater 6.
  • such a pressure sensor could also be arranged in the upper branch 4 or in the lower branch 5 of the water supply.
  • the water heater 6 heats the water flowing through to a temperature of more than 60 ° Celsius.
  • the power supply to the heating elements of the water heater. 6 specified so that a given water temperature can be maintained.
  • the metering pumps 7 are not active, so that the oil supply to the nozzle mixer units 1 is interrupted.
  • the hot water flowing to the individual nozzle mixer units 1 cleans them and removes any existing saponification and deposition.
  • the hot water required for cleaning is generated virtually online in the water supply line and does not come from a storage.
  • FIG. 1 upstream of the water heater 6 upstream of a water treatment plant 11.
  • This water treatment plant 11 is an ion exchanger which removes lime and salts from the water, softening the water thereby causing the heating elements of the water heater 6 to become less calcified.
  • the residence time of the emulsion in the device according to the invention is much shorter.
  • saponification is reduced. If there is nevertheless a deposit in the mixer or nozzle, this can be removed more easily, the surface on which deposits can form is comparatively small due to the integrated design. This means that maintenance intervals are lower and thus the availability of a rolling mill can be increased.
  • FIG. 2 shows a schematic sketch of a possible attachment of a nozzle-mixer unit 1 by means of a latching connection, for example a bayonet lock 15 in a holding device 14.
  • a latching connection for example a bayonet lock 15 in a holding device 14.
  • An essential advantage of the device according to the invention is first of all the simpler cleaning possibility, which manages without chemical cleaning agents. and acids when eliminating as consumable material detergents and acids.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Coating Apparatus (AREA)
  • Road Paving Machines (AREA)
EP13704399.8A 2012-02-15 2013-02-07 Verfahren und vorrichtung zur schmierung der walzen eines walzgerüstes Active EP2814623B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13704399.8A EP2814623B1 (de) 2012-02-15 2013-02-07 Verfahren und vorrichtung zur schmierung der walzen eines walzgerüstes

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12155480 2012-02-15
EP13704399.8A EP2814623B1 (de) 2012-02-15 2013-02-07 Verfahren und vorrichtung zur schmierung der walzen eines walzgerüstes
PCT/EP2013/052359 WO2013120749A1 (de) 2012-02-15 2013-02-07 Verfahren und vorrichtung zur schmierung der walzen eines walzgerüstes

Publications (2)

Publication Number Publication Date
EP2814623A1 EP2814623A1 (de) 2014-12-24
EP2814623B1 true EP2814623B1 (de) 2017-10-18

Family

ID=47716010

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13704399.8A Active EP2814623B1 (de) 2012-02-15 2013-02-07 Verfahren und vorrichtung zur schmierung der walzen eines walzgerüstes

Country Status (5)

Country Link
US (1) US9433984B2 (enrdf_load_stackoverflow)
EP (1) EP2814623B1 (enrdf_load_stackoverflow)
CN (1) CN104105553B (enrdf_load_stackoverflow)
IN (1) IN2014DN05743A (enrdf_load_stackoverflow)
WO (1) WO2013120749A1 (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2893986A1 (de) * 2014-01-08 2015-07-15 Siemens VAI Metals Technologies GmbH Schmierung mit Spritzdüsen mit mehreren Öleintrittsöffnungen
EP3251762B1 (de) * 2016-06-02 2019-08-07 Primetals Technologies Austria GmbH Schmiervorrichtung zum aufbringen eines schmiermittels beim walzen eines walzgutes
KR102335353B1 (ko) * 2017-08-17 2021-12-03 현대자동차 주식회사 차량 레이더 검사 시스템 및 그 방법
CN107755438A (zh) * 2017-11-16 2018-03-06 北京京诚之星科技开发有限公司 一种轧制润滑系统

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3835460A1 (de) 1988-10-18 1990-04-19 Schloemann Siemag Ag Verfahren und vorrichtung zur kuehlung und schmierung spanlos umgeformter metalle, insbesondere zur kuehlung und schmierung von walzen und walzgut beim kaltwalzen in einem walzgeruest
JP3474019B2 (ja) * 1995-02-10 2003-12-08 Ｊｆｅスチール株式会社 圧延機の圧延油供給装置
JP3390282B2 (ja) * 1995-02-22 2003-03-24 川崎製鉄株式会社 圧延油供給装置
DE10131369A1 (de) 2001-06-28 2003-01-09 Sms Demag Ag Verfahren und Vorrichtung zum Kühlen und Schmieren von Walzen eines Walzgerüstes
JP4355278B2 (ja) * 2004-11-22 2009-10-28 新日本製鐵株式会社 冷間圧延における潤滑油供給方法
DE102007042898A1 (de) * 2007-06-08 2008-12-11 Sms Demag Ag Verfahren und Vorrichtung zur Walzenschmierung
CN201211528Y (zh) * 2008-06-27 2009-03-25 李学信 卧式油水分别冷却润滑连轧机

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
US20150013419A1 (en) 2015-01-15
WO2013120749A1 (de) 2013-08-22
US9433984B2 (en) 2016-09-06
CN104105553B (zh) 2017-02-22
CN104105553A (zh) 2014-10-15
EP2814623A1 (de) 2014-12-24
IN2014DN05743A (enrdf_load_stackoverflow) 2015-04-10

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