EP0424527A1 - Cylindre de laminage - Google Patents

Cylindre de laminage Download PDF

Info

Publication number
EP0424527A1
EP0424527A1 EP89903485A EP89903485A EP0424527A1 EP 0424527 A1 EP0424527 A1 EP 0424527A1 EP 89903485 A EP89903485 A EP 89903485A EP 89903485 A EP89903485 A EP 89903485A EP 0424527 A1 EP0424527 A1 EP 0424527A1
Authority
EP
European Patent Office
Prior art keywords
band
axle
axial hole
coolant
external surface
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.)
Withdrawn
Application number
EP89903485A
Other languages
German (de)
English (en)
Other versions
EP0424527A4 (en
Inventor
Ivan Kapitonovich Suvorov
Vladimir Dmitrievich Plakhtin
Alexei Georgievich Grishanov
Leonid Ivanovich Danilov
Viktor Yakovlevich Tishkov
Alexandr Mikhailovich Sorokin
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.)
VSESOJUZNY ZAOCHNY POLITEKHNICHESKY INSTITUT
Original Assignee
VSESOJUZNY ZAOCHNY POLITEKHNICHESKY INSTITUT
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 VSESOJUZNY ZAOCHNY POLITEKHNICHESKY INSTITUT filed Critical VSESOJUZNY ZAOCHNY POLITEKHNICHESKY INSTITUT
Publication of EP0424527A1 publication Critical patent/EP0424527A1/fr
Publication of EP0424527A4 publication Critical patent/EP0424527A4/en
Withdrawn legal-status Critical Current

Links

Images

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
    • B21B27/02—Shape or construction of rolls
    • B21B27/03—Sleeved rolls
    • 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
    • B21B27/08—Lubricating, cooling or heating rolls internally

Definitions

  • the present invention relates to rolling-mill practice and, more specifically, to a mill roll.
  • a roll mill (SU, A, 435022) comprising a band secured on its axle by a taper thread self-tightening during rotation of the roll, said axle having a driven journal and a non-driven journal.
  • Cooling of the roll is carried out by pouring water on it which originates sharp thermal cycling of the areas of the band external surface at the moments of entry and exit from the centre of deformation. This produces cyclic thermal stresses in the band material causing thermal cracks which reduce the strength and durability of the roll.
  • a mill roll (SU, A, 567517) comprising a band fixed on an axle having driven and non-driven journals, said axle being provided with an axial hole which accommodates a coolant onlet pipe has a circular recess on the external surface which forms, together with the internal surface of the band, a circular space connected with the axial hole through radial channels in the axle.
  • the system of channels, holes and slots in the axle is hermetically closed and partly filled with coolant, i.e. a liquid with a low boiling temperature, for example, freon.
  • the roll is colled by this liquid which evaporates when it comes in contact with the internal surface of the band and condenses when vapours come in contact with the colder external surface of the axle. Heat is abstrated from the roll by the coolant flowing through the pipe.
  • the band cannot be uniformly cooled lengthwise by the coolant admitted at one end of the pipe and discharged at the other, because the coolant entering the pipe is colder and cools this side of the band more intensively.
  • the band is cooled less intensively because the coolant temperature here is higher than it is at the inlet end of the pipe. There arises a temperature difference along the band, resulting in its nonuniform deformation which causes heavy thermal stresses in the band material, reduces the strength and durability of the band and the roll as a whole.
  • the main object of the invention is to provide a mill roll with its axle and band designed so as to increase the strength and service life of the roll.
  • the mill roll comprising a band fixed on an axle having driven and non-driven journals and an axial hole accommodating a coolant inlet pipe, a circular recess on its external surface forming, together with the internal surface of the band, a circular space connected by radial channels in the axle with the axial hole
  • the band is fixed on the axle by means of a thread with the coolant outlet helical groove located between the thread turns on the axle, said groove communicating with the circular space between the external surface of the axle and the internal surface of the band
  • the axial hole is blind and stepped within the limits of the band length, the larger diameter step being located at the side of the non-driven journal and forms, together with the external surface of the coolant inlet pipe, a circular space for the discharge of coolant, said space communicating through at least one radial channel with the circular space between the external surface of the axle and the internal surface of the band.
  • the circular space between the external surface of the axle and the internal surface of the band should be of the sectional type, each section communicating with the axial hole through at least one radial channel.
  • the coolant inlet pipe should be installed in the axial hole so that its end protrudes somewhat beyond the limits of the large-diameter step of said axial hole while in the small-diameter step of the axial hole it should be installed immovably.
  • the incoming and outcoming flows of coolant are reliably separated which rules out their mixing and preheating of the incoming flow of coolant.
  • the coolant delivered the internal surface of the band has a sufficiently low temperature thus providing for intensive abstraction of heat and cooling of the band, reducing the thermal stresses in its material, and increasing the strength and durability of the band.
  • the use of the disclosed invention enhances the strength and durability of the mill roll while transmitting the rolling torque from the axle to the band.
  • Fig. 1 shows schematically the mill roll, according to the invention, sectional view with cut-away fragments
  • Fig. 2 - same as in Fig. 1, another design of the axle
  • Fig. 3 - fragment A in Fig. 1, enlarged
  • Fig. 4 is a section taken along line IV-IV in Fig. 1
  • Fig. 5 is a section taken along line V-V in Fig. 1.
  • the mill roll comprises a band 1 (Figs 1, 2) fixed on an axle 2 having a driven journal 3 and a non-driven journal 4.
  • the axle 2 has a hole 5 accommodating a coolant inlet pipe 6.
  • the external surface of the axle 2 is provided with a circular recess 7 which forms, together with the internal surface 8 of the band 1, a circular space 9 connected with the axial hole 5 through radial channels 10 in the axle 2.
  • the band 1 is secured on the axle 2 by means of buttress thread 11 cut on one of the areas of contact between the axle 2 and the band 1.
  • a helical groove 12 (Fig. 3) made between the turns of said thread 11 on the axle 2 and communicating with the circular space 9 (Figs 1,2) serves for discharging the coolant.
  • the axial hole 5 within the limits of the band 1 is blind and stepped.
  • the large-diameter step 13 is located at the side of the non-driven journal 4 and forms, together with the external surface of the pipe 6, a circular space 14 (Figs 1, 2, 4) for letting out the coolant, communicating through at least one radial channel 10 with the circular space 9 located between the external surface of the axle 2 and the internal surface 8 of the band 1.
  • the coolant is delivered to the helical groove 12 (Figs 2, 3) through the axial hole 5 and the radial channels 10 in the axle 2.
  • the band 1 is mated with the axle 2 by a tight fit over surfaces 15 and 16.
  • the circular space 9 between the external surface of the axle 2 and the internal surface 8 of the band 1 is of a sectional design.
  • Each section communicates with the axial hole 5 through at least one radial channel 10.
  • the sections are separated by mounting surfaces 15 and 17.
  • the sections of the circular space 9 are in communication through longitudinal channels 18 (Figs 2, 5) in the axle 2 on the mounting surface 17 at the point of its conjugation with the band 1 (Fig. 2).
  • the sectional design of said circular space creates additional areas of the mounting surface of conjugation between the band 1 and the axle 2 which reduces sagging and promotes stiffness of the band 1 in the course of rolling. This, in turn, reduces stresses in the material of the band 1 and improves its strength and durability.
  • the coolant inlet pipe 6 is accommodated in the axial hole 5 in such a manner that its end protrudes a little, as compared with the length of the small-diameter step 19, beyond the limits of the large-diameter step 13 of the axial hole 5.
  • the coolant inlet pipe 6 is immovably installed in the small-diameter step 19 (Figs 1, 2) of the axial hole 5.
  • Such installation of the pipe 6 provides for hermetic separation of the coolant flows entering and leaving the roll so that it prevents their mixing and preheating of the entering flow of coolant.
  • the coolant coming to the internal surface 8 of the band 1 has a sufficiently low temperature thus ensuring intensive abstraction of heat and cooling of the band 1, reducing thermal stresses in its material, promoting the strength and durability of the band.
  • the mill roll functions as follows.
  • the coolant water or emulsion
  • the pipe 6 In the course of rolling the coolant (water or emulsion) flows through the pipe 6, through the small-diameter step 19 of the axial hole 5 and radial channels 10 into the helical groove 12 of the thread 11 and to the internal surface 8 of the band 1.
  • the entire surface of the band 1 is simultaneously cooled, ensuring uniform distribution of temperature and intensive abstraction of heat throughout the length of the band 1. This reduces the thermal stresses in the material of the band 1, improves its strength and durability.
  • the coolant flows through the helical groove 12 and radial channels 10 in the axle 2 which intercommunicate the circular spaces 9 and 14, and is discharged from the roll into the cooling system for reuse (the system os not shown in the drawings).
  • the use of the disclosed invention increases the strength and durability of the roll by improving the efficiency of its cooling while transmitting the rolling torque from the axle to the band.
  • the present invention will be used most successfully in wide-strip hot-rolling mills. Introduction of the present invention raises the strength and durability of the roll at least twice.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

Un cylindre de laminage comprend un corps (1) de cylindre fixé sur un arbre (2) au moyen d'un filetage (11) entre les filets duquel se trouve, sur l'arbre (2), une gorge spiralée (12) permettant d'éliminer l'agent de refroidissement, reliée à une cavité annulaire (9) située entre la surface externe dudit arbre (2) et la surface interne (8) du corps (1) du cylindre. A l'intérieur de l'arbre (2) se trouve un orifice axial étagé et borgne, s'étendant dans les limites de la longueur du corps (1) du cylindre. L'étagement (13) de l'orifice axial (5) du diamètre supérieur forme, avec la surface externe d'un tube (6) amenant l'agent de refroidissement, monté dans ledit orifice axial (5), une cavité annulaire (14) éliminant ledit agent de refroidissement, reliée par un orifice radial (10) à la cavité annulaire (9) située entre la surface externe de l'arbre (2) et la surface interne (8) du corps (1) du cylindre.
EP19890903485 1988-11-25 1988-11-25 Mill roll Withdrawn EP0424527A4 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SU1988/000246 WO1990006192A1 (fr) 1988-11-25 1988-11-25 Cylindre de laminage

Publications (2)

Publication Number Publication Date
EP0424527A1 true EP0424527A1 (fr) 1991-05-02
EP0424527A4 EP0424527A4 (en) 1991-08-21

Family

ID=21617351

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890903485 Withdrawn EP0424527A4 (en) 1988-11-25 1988-11-25 Mill roll

Country Status (3)

Country Link
EP (1) EP0424527A4 (fr)
JP (1) JPH03502305A (fr)
WO (1) WO1990006192A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU634107B2 (en) * 1990-11-27 1993-02-11 Kawasaki Steel Corporation Roll charged with heat transfer medium
DE202004020260U1 (de) * 2004-12-28 2005-02-24 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzeinrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1046908A (fr) * 1951-10-29 1953-12-09 Lancement D Outil Soc D Perfectionnement aux cylindres de laminoirs à froid et à leurs dispositifs de refroidissement
FR1472339A (fr) * 1965-03-09 1967-03-10 Prolizenz Ag Cylindre pour la coulée continue de métal entre les cylindres d'un laminoir
DE1481159A1 (de) * 1966-12-02 1970-07-09 Demag Ag Transport-,Richt- oder Fuehrungswalze
DE1471874B2 (de) * 1964-01-07 1972-08-31 Libbey-Owens-Ford Glass Co., Toledo, Ohio (V.St.A.) Vorrichtung zum ziehen von glastafeln aus einer geschmolzenen glasmasse
DE2707907A1 (de) * 1976-02-24 1977-08-25 Trimay Engineering Co Walze bzw. welle
EP0101661A1 (fr) * 1982-08-20 1984-02-29 MANNESMANN Aktiengesellschaft Rouleau d'appui et/ou rouleau de transport du type à refroidissement interne et procédé de fabrication de ce rouleau

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU567517A1 (ru) * 1976-04-07 1977-08-05 Магнитогорский Горно-Металлургический Институт Имени Г.И.Носова Прокатный валок с внутренним охлаждением
SU735345A1 (ru) * 1977-03-14 1980-05-27 Московский Ордена Трудового Красного Знамени Институт Стали И Сплавов Прокатный валок с системой охлаждени
SU689753A1 (ru) * 1978-03-06 1979-10-08 Магнитогорский горно-металлургический институт им. Г.И.Носова Прокатный валок

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1046908A (fr) * 1951-10-29 1953-12-09 Lancement D Outil Soc D Perfectionnement aux cylindres de laminoirs à froid et à leurs dispositifs de refroidissement
DE1471874B2 (de) * 1964-01-07 1972-08-31 Libbey-Owens-Ford Glass Co., Toledo, Ohio (V.St.A.) Vorrichtung zum ziehen von glastafeln aus einer geschmolzenen glasmasse
FR1472339A (fr) * 1965-03-09 1967-03-10 Prolizenz Ag Cylindre pour la coulée continue de métal entre les cylindres d'un laminoir
DE1481159A1 (de) * 1966-12-02 1970-07-09 Demag Ag Transport-,Richt- oder Fuehrungswalze
DE2707907A1 (de) * 1976-02-24 1977-08-25 Trimay Engineering Co Walze bzw. welle
EP0101661A1 (fr) * 1982-08-20 1984-02-29 MANNESMANN Aktiengesellschaft Rouleau d'appui et/ou rouleau de transport du type à refroidissement interne et procédé de fabrication de ce rouleau

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9006192A1 *

Also Published As

Publication number Publication date
JPH03502305A (ja) 1991-05-30
EP0424527A4 (en) 1991-08-21
WO1990006192A1 (fr) 1990-06-14

Similar Documents

Publication Publication Date Title
US6868782B2 (en) Cylinder of a rotary printing machine having tempering medium flow chamber
US4600413A (en) Centrifugal deaerator and pump
US4886392A (en) Press-fit structure of a shaft
JP4955558B2 (ja) ポンプロータの冷却
US20060191662A1 (en) Internally cooled billet guiding roller
EP0110694A2 (fr) Extrudeuses à vis
EP0424527A1 (fr) Cylindre de laminage
EP2569105B1 (fr) Joint et roulement pour un roulement de train de laminage a film d'huile avec des helices espacées pour propulser l'huile hors du roulement ; utilisation d'un tel joint dans un roulement de train de laminage a film d'huile
EP0688090B1 (fr) Système de refroidissement pour un moteur
EP0184326A2 (fr) Broyeur tubulaire
DE19609308C2 (de) Vakuumpumpe mit Gewindekanal
US6736226B2 (en) Method and apparatus for boring through a solid material
CN1657271B (zh) 挤压螺旋传送器和挤压螺旋传送器装置
CA2170917A1 (fr) Pompe peristaltique a tubes multiples
EP0609066A1 (fr) Dispositif pour enfoncer en continu un matériau extrudable allongé dans une chambre de pression d'extrusion
US4887907A (en) Rotary extruder with internally cooled rotor
US7040482B2 (en) Bearing life extender for conveyor type rollers
SE505358C2 (sv) Axeltapp för lättmetalrotor
US5961381A (en) Apparatus for cooling a plunge grinding drum
JPH11347670A (ja) レ―イングパイプ
JPS61176411A (ja) 熱間圧延機におけるワ−クロ−ルの冷却装置
US3031130A (en) Rotary device
JP3453443B2 (ja) オーガ式製氷機
US11896980B2 (en) Temperature-controlled component and method for the production of a temperature-controlled component
SU944693A1 (ru) Предохранительный шпиндель

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19901015

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE FR GB IT

A4 Supplementary search report drawn up and despatched

Effective date: 19910628

AK Designated contracting states

Kind code of ref document: A4

Designated state(s): BE DE FR GB IT

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19911017