US3789641A - Method of lubricating a hot steel workpiece prior to hot rolling - Google Patents

Method of lubricating a hot steel workpiece prior to hot rolling Download PDF

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Publication number
US3789641A
US3789641A US00306076A US3789641DA US3789641A US 3789641 A US3789641 A US 3789641A US 00306076 A US00306076 A US 00306076A US 3789641D A US3789641D A US 3789641DA US 3789641 A US3789641 A US 3789641A
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US
United States
Prior art keywords
oil
hot
workpiece
lubricating
atomized
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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.)
Expired - Lifetime
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US00306076A
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English (en)
Inventor
W Miller
R Polinski
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United States Steel Corp
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United States Steel Corp
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Assigned to USX CORPORATION, A CORP. OF DE reassignment USX CORPORATION, A CORP. OF DE MERGER (SEE DOCUMENT FOR DETAILS). Assignors: UNITED STATES STEEL CORPORATION (MERGED INTO)
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
    • F16N7/30—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated the oil being fed or carried along by another fluid
    • F16N7/32—Mist lubrication
    • F16N7/34—Atomising devices for oil
    • 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
    • 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
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0233—Spray nozzles, Nozzle headers; Spray systems

Definitions

  • ABSTRACT A method of lubricating a hot steel workpiece in the process of hot rolling wherein an undiluted lubricating oil is atomized and sprayed onto the hot steel surface.
  • WILLIAM G. MILLER a RAYMOND E. POL/IVS/(l E Attorney METHOD OF LUBRICATING A HOT STEEL WORKPIECE PRIOR TO HOT ROLLING provide several beneficial advantages, such as inl creased roll-life, superior surface on the rolled product, a more easily removed surface scale, and reduced power consumption.
  • lubrication of the workpiece is common practice in cold rolling operations, it has rarely been applied to hot rolling and, when it has been attempted, results have usually been disappointing.
  • lubrication of a workpiece in the process of rolling is usually accomplished by applying either an oilwater mixture, or applying undiluted oil as an atomized spray.
  • oil and water mixtures are applied to a hot workpiece, a thin steam barrier is usually formed against the hot workpiece surface which prevents the oil from adhering thereto.
  • the cooling water usuallyapplied at the rolls will readily wash the oil-water-mixture from the workpiece surface.
  • Another object of this invention is to provide a method and apparatus for'applying an undiluted lubricating oil onto a hot workpiece prior to hot rolling.
  • Still another object of this invention is to provide an apparatus for lubricating a hot workpiece which is particularly adaptable to a two-high rolling mill.
  • FIG. 1 is a schematic diagram of one embodiment of O the apparatus of this invention as utilized in combination with a conventional two-high rolling mill;
  • FIG. 2 is an enlarged sectional view of an atomizing nozzle as may be used in this invention.
  • preheated oil is atomized and sprayed onto a hot workpiece while maintaining the atomized oil particles within the approximate range 150 to 250 microns in size.
  • the minimum particle size limit of about 150 microns is necessary to avoid flashing and burn-off when the oil particles first contact the hot workpiece.
  • the upper size limit of about 250 microns is essential to assure a thin uniform oil coating on the workpiece. That is to say, if the sprayed oil particles exceed about 250 microns in size, there is a tendency to produce a spotty, non-uniform oil coverage on the workpiece.
  • the larger oil particles will not flash upon initial contact with the hot workpiece as noted above, prolonged contact with the hot workpiece may well cause the oil to eventually ignite and burn.'Therefore, it is preferred that the actual oil spray be applied as late as possible prior to the roll-bite, thereby minimizing the time between lubrication and hot rolling. Once hot rolling is commenced, the cooling water cascading down the roll surfaces will prevent oil ignition.
  • the spray be directed perpendicularly to the workpiece with a narrow spray angle to avoid deflection of the oil particles off of the workpiece surface.
  • FIG. 1 One embodiment of the apparatus used in the practice of this invention is schematically illustrated in FIG. 1, where the numeral indicates a conventional twohigh rolling mill having an upper and lower roll 12 and 14, respectively.
  • a conventional hot workpiece W is being processed through mill 10.
  • At least one spray nozzle is provided above the workpiece W a short distance from the mill 10 on the inlet side, and at least one spray nozzle 22 is provided below nozzle 20.
  • the number of nozzles 22 and 24 will of course depend upon the width of the workpiece W and the width of the spray at the workpiece surface. When hot rolling narrow materials such as rods, strapping stock, rebar stock and the like, then one nozzle on each side of workpiece W will be more than sufficient. When rolling wider materials, such as bumper stock, several nozzles may be necessary to completely cover the workpiece surface with lubricant.
  • the undiluted lubricating oil is supplied from oil storage tank 26 via oil supply line 28. Control of the oil supply is provided by pump 30, regulator 31 and gage 32 on oil supply line 28. Unused oil is returned to tank 26 via oil return line 34.
  • Atomizing air is supplied to nozzles 20 and 22 via atomizing air line 36, while plunger air is supplied via plunger air line 38.
  • Control of atomizing air at the nozzles 20,22 is effected by providing a solenoid 40, a regulator 42 and a gage 44 on atomizing air line 36.
  • a solenoid, regulator and gage, 46, 48 and 50 respectively, are provided on plunger air line 38.
  • This nozzle shown in detail in FIG. 2, features automatic shutoff and clean-out mechanisms enabling the system to be kept under pressure at all times without clogging.
  • This nozzle is particularly desirable for use in this invention because it is readily capable of producing the essential large sized oil particles by merely controlling atomizing air pressure.
  • this nozzle will provide an economical oil output by a mere oil pressure adjustment, and the preferred narrow application band can easily be adjusted.
  • the preferred nozzle mentioned above is provided with a central opening 60 which receives the oil via oil inlet 62 and delivers it to the oil outlet opening 64.
  • Passage 66 receives atomizing air from atomizing air inlet 68 and delivers it to atomizing air outlets 70.
  • a clean-out and shut-off needle 72 is received in opening 60 and has a piston 74 attached thereto which is urged by spring 76 to the closed position. Piston 74 is moved to the open position by means of plunger air introduced through opening 78.
  • the lubricating oil preheated to a suitable temperature is pumped by pump 30, from tank 26 to the nozzles 20 and 22.
  • the pressure thereof is controlled by regulator 31.
  • Excess oil is returned to tank 26 via return line 34.
  • atomizing air is supplied to nozzles 20 and 22 via line 38 by opening solenoid 40 and regulating the pressure with regulator 42.
  • solenoid 46 is opened to activate nozzles 20 and 22 and thereby spray lubricating oil onto workpiece W.
  • the atomized oil particle size can be regulated to the desired size by suitable adjustment of the atomizing air pressure with regulater 42.
  • Suitable operating parameters are dependent upon so many variables that the limits thereof cannot be presented here. Nevertheless, these operating parameters can be readily determined experimentally. For any given system, given lubricant and given temperature, the desired lubricant particle size is readily attained by proper ratio adjustment of oil output regulator 31 and atomizing air regulator 42.
  • a method of lubricating a steel workpiece in the process of hot rolling which comprises heating the steel workpiece to a temperature above about l,600F, atomizing an undiluted lubricating oil to form particles thereof within the size range of about 150 to 250 microns, and spraying the atomized lubricating oil directly onto the hot workpiece surface.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Metal Rolling (AREA)
  • Nozzles (AREA)
US00306076A 1970-09-25 1972-11-13 Method of lubricating a hot steel workpiece prior to hot rolling Expired - Lifetime US3789641A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US7539470A 1970-09-25 1970-09-25
US30607672A 1972-11-13 1972-11-13

Publications (1)

Publication Number Publication Date
US3789641A true US3789641A (en) 1974-02-05

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US00306076A Expired - Lifetime US3789641A (en) 1970-09-25 1972-11-13 Method of lubricating a hot steel workpiece prior to hot rolling

Country Status (7)

Country Link
US (1) US3789641A (enExample)
AU (1) AU450187B2 (enExample)
BE (1) BE772701A (enExample)
DE (1) DE2147625A1 (enExample)
FR (1) FR2107967B1 (enExample)
GB (1) GB1342153A (enExample)
NL (1) NL7112701A (enExample)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841126A (en) * 1972-03-22 1974-10-15 Kobe Steel Ltd Method of lubricating a work, especially a wire in a warm forging process
US4214470A (en) * 1977-01-14 1980-07-29 Hi-Draw Machinery Ltd. Method and apparatus for cooling drawn wire
ES2176084A1 (es) * 1999-06-14 2002-11-16 Outokumpu Oy Metodo para mejorar la lubricacion en la laminacion
US7204112B1 (en) * 2002-12-30 2007-04-17 Dana Corporation Method of lubricating a workpiece for hydroforming
US20110111124A1 (en) * 2008-06-18 2011-05-12 Sms Siemag Aktiengesellschaft Method and device for lubricating rollers and a rolled strip of a rolling stand
CN104768667A (zh) * 2012-09-03 2015-07-08 西马克·西马格公司 为冷却金属带或其他轧件的冷却设备动态供给冷却剂的方法和装置
US20160325327A1 (en) * 2014-01-08 2016-11-10 Primetals Technologies Austria Gnbh Lubrication using spray nozzles having multiple oil inlet openings

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6461684B1 (en) * 2001-09-28 2002-10-08 The Goodyear Tire & Rubber Company Spray coating onto wires

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2707098A (en) * 1951-11-27 1955-04-26 Steel Company Means for lubricating sheet metal during rolling
US3150548A (en) * 1961-06-26 1964-09-29 United States Steel Corp Method and apparatus for controlling the thickness of rolled strip
US3208253A (en) * 1963-05-10 1965-09-28 United States Steel Corp Control of rolling mill lubricant
US3523437A (en) * 1967-12-07 1970-08-11 United States Steel Corp Method of cold reducing
US3605473A (en) * 1969-03-21 1971-09-20 Nat Steel Corp Method and apparatus for hot rolling ferrous metal workpieces
US3648497A (en) * 1970-02-18 1972-03-14 United States Steel Corp Apparatus for automatically supplying oil to a hot strip mill

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2707098A (en) * 1951-11-27 1955-04-26 Steel Company Means for lubricating sheet metal during rolling
US3150548A (en) * 1961-06-26 1964-09-29 United States Steel Corp Method and apparatus for controlling the thickness of rolled strip
US3208253A (en) * 1963-05-10 1965-09-28 United States Steel Corp Control of rolling mill lubricant
US3523437A (en) * 1967-12-07 1970-08-11 United States Steel Corp Method of cold reducing
US3605473A (en) * 1969-03-21 1971-09-20 Nat Steel Corp Method and apparatus for hot rolling ferrous metal workpieces
US3648497A (en) * 1970-02-18 1972-03-14 United States Steel Corp Apparatus for automatically supplying oil to a hot strip mill

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841126A (en) * 1972-03-22 1974-10-15 Kobe Steel Ltd Method of lubricating a work, especially a wire in a warm forging process
US4214470A (en) * 1977-01-14 1980-07-29 Hi-Draw Machinery Ltd. Method and apparatus for cooling drawn wire
ES2176084A1 (es) * 1999-06-14 2002-11-16 Outokumpu Oy Metodo para mejorar la lubricacion en la laminacion
US7204112B1 (en) * 2002-12-30 2007-04-17 Dana Corporation Method of lubricating a workpiece for hydroforming
US20110111124A1 (en) * 2008-06-18 2011-05-12 Sms Siemag Aktiengesellschaft Method and device for lubricating rollers and a rolled strip of a rolling stand
US9254513B2 (en) 2008-06-18 2016-02-09 Sms Group Gmbh Method and device for lubricating rollers and a rolled strip of a rolling stand
CN104768667A (zh) * 2012-09-03 2015-07-08 西马克·西马格公司 为冷却金属带或其他轧件的冷却设备动态供给冷却剂的方法和装置
US20160325327A1 (en) * 2014-01-08 2016-11-10 Primetals Technologies Austria Gnbh Lubrication using spray nozzles having multiple oil inlet openings
US10780475B2 (en) * 2014-01-08 2020-09-22 Primetals Technologies Austria GmbH Lubrication using spray nozzles having multiple oil inlet openings

Also Published As

Publication number Publication date
DE2147625A1 (de) 1972-03-30
FR2107967B1 (enExample) 1975-02-07
FR2107967A1 (enExample) 1972-05-12
AU3329671A (en) 1973-03-15
GB1342153A (en) 1973-12-25
NL7112701A (enExample) 1972-03-28
BE772701A (fr) 1972-03-15
AU450187B2 (en) 1974-07-04

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Owner name: USX CORPORATION, A CORP. OF DE, STATELESS

Free format text: MERGER;ASSIGNOR:UNITED STATES STEEL CORPORATION (MERGED INTO);REEL/FRAME:005060/0960

Effective date: 19880112