EP2814623A1 - Procede et dispositif de lubrification des cylindres d'une cage de laminoir - Google Patents

Procede et dispositif de lubrification des cylindres d'une cage de laminoir

Info

Publication number
EP2814623A1
EP2814623A1 EP13704399.8A EP13704399A EP2814623A1 EP 2814623 A1 EP2814623 A1 EP 2814623A1 EP 13704399 A EP13704399 A EP 13704399A EP 2814623 A1 EP2814623 A1 EP 2814623A1
Authority
EP
European Patent Office
Prior art keywords
water
nozzle
mixing
supply line
oil
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.)
Granted
Application number
EP13704399.8A
Other languages
German (de)
English (en)
Other versions
EP2814623B1 (fr
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
SIEMENS VAI METALS TECHNOLOGIES GmbH
Siemens VAI Metals Technologies GmbH Austria
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 SIEMENS VAI METALS TECHNOLOGIES GmbH, Siemens VAI Metals Technologies GmbH Austria filed Critical SIEMENS VAI METALS TECHNOLOGIES GmbH
Priority to EP13704399.8A priority Critical patent/EP2814623B1/fr
Publication of EP2814623A1 publication Critical patent/EP2814623A1/fr
Application granted granted Critical
Publication of EP2814623B1 publication Critical patent/EP2814623B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 apparatus 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 via a first supply line water and a second
  • Supplying oil is supplied, a mixture of water and oil produced 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.
  • this emulsion is fed to an array of nozzles which inject the emulsion onto the belt and / or into the nip and / or on the work rolls.
  • Saponification particles from the inner wall of a pipe or the mixer dissolves and is flushed into the outlet openings of a nozzle, it can clog. In this
  • Such a rolling gap lubrication is known, for example, from EP 2 040 860 B1.
  • 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.
  • Water supply line flowing water is heated quasi in line.
  • This heater is permanently installed and only during a time interval, which is specified by a controller, active. This eliminates a third supply line, which hot water for
  • Roll gap lubrication can be easily assembled. On the other hand, cleaning the roll gap lubrication can be easier.
  • the hot water for flushing the mixing unit and nozzles is very quickly available and can be easily adapted in temperature to the needs. This allows for cleaning even during short production stoppages, allowing saponification at an early stage
  • the power supply of the heating device can in different ways,
  • the heater may be electrically operated, e.g. be designed as a water heater.
  • a water heater has several advantages. On the one hand, the required volume of construction is one
  • Water temperature can be controlled by electronic control Energy supply to the individual resistance heating elements are very precisely specified and regulated. This allows the
  • control unit for determining the time interval in which the cleaning takes place uses a process variable from the roll lubrication, for example, a measurement signal in the water supply line, which determines the degree of contamination of the mixing and
  • Sprayer indicates.
  • 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 minimized.
  • 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 a unit and executed
  • Emulsion / dispersion in the assembly is very low, which reduces soap formation. As a result, the rolling process must be less for the purpose of cleaning the
  • Roll gap lubrication be interrupted.
  • Figure 1 is a block diagram of an inventive
  • Figure 2 is a nozzle-mixer unit, by means of a
  • FIG. 1 schematically illustrates a
  • 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. On the inlet side to the work rolls 12 is a mixing and spraying device 10 can be seen. These mixed and
  • Sprayer 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
  • Injection device which introduces the emulsion into the nip in the form of a spray jet. This introduction can by
  • the dispersion is a water-oil mixture formed from minute oil droplets in water.
  • three nozzle mixer units 1 can be seen on the upper side of the rolled strip 8 and three on the underside of the rolled strip 8.
  • the upper arrangement of the nozzle mixer units 1 is from an upper supply branch 4, the lower of a lower supply branch
  • Supply branch 5 each supplied with both 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. As indicated in Figure 1 by the dashed line, the
  • 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 are mixers and
  • Spray organ locally arranged directly behind one another.
  • 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 forms the
  • the sensor 13 is a pressure sensor.
  • FIG 1 shows this pressure sensor 13 downstream of
  • the water heater 6 heats the water flowing through to a temperature of more than 60 ° Celsius. In a known manner, the
  • 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 each nozzle mixer unit 1 cleans it and removes any saponification and scale that may be present.
  • the hot water required for cleaning is generated virtually online in the water supply line and does not come from a storage.
  • 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 calcify less.
  • Spray nozzles over a pipe length of usually more than one meter takes place the residence time of the emulsion in the device according to the invention is much shorter.
  • saponification is reduced. If there is still a deposit in the mixer or nozzle, it can be easily removed, the surface on which
  • Can form deposits is comparatively low due to the integrated design. This leads to
  • Figure 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 15 in a holding device 14.
  • a latching connection for example a bayonet 15 in a holding device 14.
  • a nozzle-mixer unit 1 are released very quickly from the holding device 14.
  • the dirty unit 1 can then be cleaned or serviced.
  • An essential advantage of the device according to the invention is first the simpler cleaning option, which does not require chemical cleaning agents, and eliminates acids in the consumption of material as cleaning agents and acids.
  • Flow heater is associated with lower power consumption.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Road Paving Machines (AREA)
  • Coating Apparatus (AREA)

Abstract

Procédé de lubrification des cylindres d'une cage de laminoir, notamment de lubrification de l'emprise dans une cage de laminoir pour laminer des bandes, un dispositif de mélange et de pulvérisation alimenté en eau par une première conduite d'alimentation (3) et en huile par une deuxième conduite d'alimentation (2) produisant un mélange d'eau et d'huile qui est pulvérisé sur la bande et/ou dans l'emprise et/ou sur au moins un des cylindres de la cage de laminoir. Selon l'invention, l'eau s'écoulant vers le dispositif de mélange et de pulvérisation (10) est chauffée pendant une durée prédéfinie par une unité de commande (9) au moyen d'un dispositif chauffant (6) prévu dans la première conduite d'alimentation (3).
EP13704399.8A 2012-02-15 2013-02-07 Procédé et dispositif de graissage des cylindres d'une cage de laminoir Active EP2814623B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13704399.8A EP2814623B1 (fr) 2012-02-15 2013-02-07 Procédé et dispositif de graissage des cylindres d'une cage de laminoir

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12155480 2012-02-15
EP13704399.8A EP2814623B1 (fr) 2012-02-15 2013-02-07 Procédé et dispositif de graissage des cylindres d'une cage de laminoir
PCT/EP2013/052359 WO2013120749A1 (fr) 2012-02-15 2013-02-07 Procede et dispositif de lubrification des cylindres d'une cage de laminoir

Publications (2)

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

Family

ID=47716010

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13704399.8A Active EP2814623B1 (fr) 2012-02-15 2013-02-07 Procédé et dispositif de graissage des cylindres d'une cage de laminoir

Country Status (5)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2893986A1 (fr) * 2014-01-08 2015-07-15 Siemens VAI Metals Technologies GmbH Lubrification à l'aide de buses d'injection dotées de plusieurs orifices d'entrée d'huile
EP3251762B1 (fr) * 2016-06-02 2019-08-07 Primetals Technologies Austria GmbH Dispositif de lubrification pour l'application d'un lubrifiant lors du laminage d'un produit de laminage
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
See references of WO2013120749A1 *

Also Published As

Publication number Publication date
IN2014DN05743A (fr) 2015-04-10
US20150013419A1 (en) 2015-01-15
WO2013120749A1 (fr) 2013-08-22
CN104105553A (zh) 2014-10-15
EP2814623B1 (fr) 2017-10-18
US9433984B2 (en) 2016-09-06
CN104105553B (zh) 2017-02-22

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