WO2007037244A1 - Rouleau de four - Google Patents

Rouleau de four Download PDF

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Publication number
WO2007037244A1
WO2007037244A1 PCT/JP2006/319112 JP2006319112W WO2007037244A1 WO 2007037244 A1 WO2007037244 A1 WO 2007037244A1 JP 2006319112 W JP2006319112 W JP 2006319112W WO 2007037244 A1 WO2007037244 A1 WO 2007037244A1
Authority
WO
WIPO (PCT)
Prior art keywords
outer tube
disk
disks
hearth roll
heat conduction
Prior art date
Application number
PCT/JP2006/319112
Other languages
English (en)
Japanese (ja)
Inventor
Kiyoshi Nishida
Kanji Hirakuri
Original Assignee
Chugai Ro Co., Ltd.
Ask Technica Corporation
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 Chugai Ro Co., Ltd., Ask Technica Corporation filed Critical Chugai Ro Co., Ltd.
Publication of WO2007037244A1 publication Critical patent/WO2007037244A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire

Definitions

  • the present invention relates to a hearth roll used for conveying a high-temperature rolled material.
  • Patent Document 1 describes conventional examples of first to fourth hearth rolls shown in FIGS.
  • the hearth roll of the first conventional example shown in 02 (A) is made of a metal outer tube 12 and a support ring 14 provided on the outer periphery of a hollow metal shaft 11 whose inside is cooled by water. 15 is supported, and the outer tube 15 supports and conveys the rolled material.
  • Fig. 2 (B) shows the surface temperature distribution of the hearth roll of the first conventional example. As shown in the figure, the outer tube 15 is cooled only in the portions indicated by the flanges 12, 13 and the support ring 14, and the surface temperature varies greatly.
  • the hearth roll of the second conventional example shown in Fig. 3 (A) is obtained by increasing the number of support rings 14 of the first conventional example, but as shown in Fig. 3 (B), the outer tube The temperature variation of 15 cannot be made sufficiently small.
  • the hearth roll of the third conventional example shown in FIG. 4 (A) is obtained by filling the space between the metal shaft 11 and the outer tube 15 with a heat-resistant mortar 16 instead of the support ring 14.
  • a force flange 13 that can keep the temperature substantially constant over a wide range of the outer tube 15. , 14, except for both ends supported by the metal shaft 11, so that the heat can not be dissipated to the cooling water passing through the metal shaft 11.
  • FIG. 5 (A) a large number of discs 17 made of an inorganic fiberboard are used instead of the heat-resistant mortar 16 of the third conventional example.
  • the flange 13 fitted to the metal shaft 11 is fastened with a nut 18 and fixed.
  • the disc 17 is not deteriorated even if it is repeatedly used, and the outer tube 15 cannot be supported.
  • FIG. 5 (B) if the temperature of the central portion of the outer tube 15 becomes too high and build-up occurs in an acidic atmosphere, the disadvantage is eliminated.
  • the fifth conventional example in which the outer tube 15 of the fourth conventional example is omitted, supports the rolled material with a disk 17 of an inorganic fiber plate instead of a metal.
  • the surface temperature can be maintained at an approximately appropriate temperature.
  • the disk 17 of the inorganic fiber board is worn when used repeatedly, so there is a problem that the durability is insufficient!
  • Patent Document 1 Japanese Patent Laid-Open No. 11-29826
  • an object of the present invention is to provide a highly durable nose roll that can be maintained at an appropriate temperature with a variable surface temperature of V.
  • a hearth roll according to the present invention has a plurality of low heat conduction disks and a plurality of high heat conduction disks stacked on the outer periphery of a metal shaft formed to allow cooling water to pass therethrough. It is assumed that the outer tube is fitted so as to cover the outer periphery of the low heat conduction disk and the high heat conduction disk.
  • the outer pipe is supported by laminating the low thermal conductive disk having excellent heat retaining performance and the high thermal conductive disk having excellent cooling capacity, so that the outer pipe is supported while supporting the entire outer pipe.
  • Heat can be taken from multiple points of the pipe and dissipated to the cooling water passing through the metal shaft. Since the outer tube is cooled by being dispersed by a large number of high heat conducting disks, the surface temperature does not vary. Also, By laminating high heat conduction disks with high mechanical strength, the mechanical load on the low heat conduction disks can be reduced and high durability can be obtained.
  • the low thermal conductive disk may be composed of an inorganic fiber board obtained by making inorganic fibers into a plate shape.
  • the low thermal conductive disk is excellent in heat resistance and durability, has a low thermal conductivity, and can provide a highly durable hearth roll.
  • the high thermal conductive disk can be formed of a metal plate having excellent heat resistance, durability, and workability.
  • the outer tube exposed to a high temperature is held by a large number of low heat conductive plates having excellent heat insulation and a large number of high heat conductive disks having excellent cooling properties.
  • the tube can be dispersed and cooled by a number of high heat transfer disks. As a result, it is possible to provide a hearth roll that does not vary in the surface temperature of the outer tube and has high durability.
  • FIG. 1 is a cross-sectional view and a surface temperature distribution diagram of a hearth roll according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view and surface temperature distribution diagram of a first conventional example of a hearth roll.
  • FIG. 3 is a cross-sectional view and surface temperature distribution diagram of a second conventional example of a hearth roll.
  • FIG. 4 Cross-sectional view and surface temperature distribution diagram of third conventional example of hearth roll.
  • FIG. 5 is a cross-sectional view and surface temperature distribution diagram of a fourth conventional example of a hearth roll.
  • FIG. 6 is a cross-sectional view and surface temperature distribution diagram of a fifth conventional example of a hearth roll.
  • FIG. 1 (A) shows a hearth roll 1 which is an embodiment of the present invention.
  • the hearth roll 1 has a hollow metal shaft 2 formed so that cooling water can pass inside, a fixed flange 3 fitted and welded to the metal shaft 2, and a binder attached to the ceramic fiber.
  • a double nut 7 that presses and fixes the low heat conduction disk 4 and the high heat conduction disk 5 and the outer periphery of the low heat conduction disk 4 and the high heat conduction disk 5 are fitted by tightening to press.
  • One end is fixed by welding to the fixed flange 3. It consists of an outer tube 8 made of SUS310S (equivalent to AISI310S).
  • the thicknesses of the low thermal conductivity disk 4 and the high thermal conductivity disk 5 are all the same.
  • Four low thermal conductive disks 4 and one high thermal conductive disk 5 are arranged alternately, and four low thermal conductive disks 4 are arranged at both ends, so the low thermal conductive disks 4
  • the total thickness of 4 is slightly larger than about 4 times the total thickness of the high thermal conductive disk 5.
  • Fig. 1 (B) shows the surface temperature distribution of the outer tube 8 when the high-temperature rolled material is transported by the hearth roll 1 having the above-mentioned constitutional force.
  • the outer tube 8 is a force at which the temperature at both ends in contact with the fixed flange 2 or the movable flange 6 is lowered. The other portions are maintained at a temperature close to the appropriate temperature.
  • the outer tube 8 receives heat substantially uniformly in the axial direction of the rolling material force to be conveyed.
  • the portion of the outer tube 8 that contacts the flanges 3 and 6 or the high thermal conductivity disk 5 is the cooling water that is passed through the metal shaft 2 through the flanges 3 and 6 or the high thermal conductivity disk 5.
  • the low heat conducting disc 4 cannot take heat away from the outer tube 8, the portion of the outer tube 8 that contacts the low heat conducting disc is not cooled directly.
  • the surface temperature of the outer tube 8 is a portion in contact with the low thermal conduction disk 4.
  • the height is slightly higher than that of the heat transfer disk 5 and slightly lower than the portion in contact with the high heat conduction disk 5.
  • the high heat conduction disk 5 is a thin plate, the amount of heat released per sheet is limited, and the surface temperature of the outer tube 8 is not greatly reduced locally.
  • the portion of the outer tube 8 in contact with the low thermal conductivity disk 4 is the heat conduction in the outer tube 8. Therefore, the heat can be dissipated indirectly through the high thermal conductive disk 5, and the temperature does not become too high. As a result, the surface temperature of the outer tube 8 is maintained appropriately, and the scale does not build up.
  • the hearth roll 1 supports the rolled material with the outer tube 8
  • the low heat conduction disk 4 which is an inorganic fiber plate force without the mind of wear of the low heat conduction disk 4 is stable. Even if it is used repeatedly, it does not deteriorate.
  • the total thickness of the low thermal conductive disk 4 is larger than the total thickness of the high thermal conductive disk 5, so the cooling capacity of the outer tube 8 by the high thermal conductive disk 5 is In addition, the heat insulation ability of the low heat conduction disk 4 is superior. From this, even when rolled material of 1000 ° C or higher is conveyed, the outer shaft 8 is prevented from being overcooled while the metal shaft 2 is sufficiently cooled to increase the life of the bearing (not shown). The surface of the tube 8 can be maintained at an appropriate temperature.
  • a further feature of the hearth roll 1 of the present invention is that the ability to cool the outer tube 8 can be easily adjusted by changing the ratio of the low heat conduction disk 4 and the high heat conduction disk 5. For example, if the number of high heat conducting disks 5 is increased, the surface temperature of the outer tube 8 can be lowered without changing the cooling water and other conditions.
  • the surface temperature of the outer tube 8 is low at the part in contact with the high heat conduction disk 5 that is high in the part in contact with the low heat conduction disk 4, but the thin heat conduction disk 4 and the high heat conduction disk 5 that are as thin as possible are used.
  • the surface temperature can be made substantially uniform by disposing the highly heat conductive disks 5 as dispersed as possible. For this reason, it is preferable to periodically laminate the low thermal conductivity disk 4 and the high thermal conductivity disk 5 in the central portion. As a result, local overheating and overcooling of the outer tube 8 can be prevented, and prediction and adjustment of the surface temperature are facilitated.
  • the low heat conduction disk 4 and the high heat conduction disk 5 have the same thickness, but the low heat conduction disk 4 and the high heat conduction disk having different thicknesses. By laminating 5, the high thermal conductive disk 5 may be distributed between the low thermal conductive disks 4.
  • the high heat conductive disk 5 is not limited to a stainless steel plate, and other high heat conductive materials such as other metals and graphite expanded sheets can be used.
  • the outer tube 8 is not limited to a metal, and a ceramic crystal sleeve or the like can be used.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

La présente invention concerne un rouleau de four qui permet de maintenir sa propre température de surface à une température appropriée sans qu’apparaissent de fluctuations et en obtenant une durabilité élevée. Un arbre métallique (2) est formé de manière à permettre à l’eau de refroidissement de le traverser et est pourvu sur sa circonférence d’un stratifié contenant de multiples disques à faible conductivité thermique (4) composés de panneaux de fibres inorganiques et de multiples disques à haute conductivité thermique (5) composés, par exemple, de plaques métalliques. L’arbre est également doté d’un tube externe (8) disposé de façon à couvrir les circonférences des disques à faible conductivité thermique (4) et des disques à haute conductivité thermique (5).
PCT/JP2006/319112 2005-09-29 2006-09-27 Rouleau de four WO2007037244A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005284999A JP2007092148A (ja) 2005-09-29 2005-09-29 ハースロール
JP2005-284999 2005-09-29

Publications (1)

Publication Number Publication Date
WO2007037244A1 true WO2007037244A1 (fr) 2007-04-05

Family

ID=37899668

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2006/319112 WO2007037244A1 (fr) 2005-09-29 2006-09-27 Rouleau de four

Country Status (2)

Country Link
JP (1) JP2007092148A (fr)
WO (1) WO2007037244A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016160449A (ja) * 2015-02-27 2016-09-05 三菱日立パワーシステムズ株式会社 断熱ローラ

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101049843B1 (ko) * 2007-12-24 2011-07-15 주식회사 포스코 허스롤 장치
KR101906259B1 (ko) * 2016-12-08 2018-10-10 주식회사 포스코 허스롤 냉각장치

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01201417A (ja) * 1988-02-05 1989-08-14 Ask Corp ローラーハース型加熱炉用搬送ロール
JPH02129315A (ja) * 1988-11-08 1990-05-17 Ibiden Co Ltd ステンレス鋼搬送用ロール
JPH03197615A (ja) * 1989-12-26 1991-08-29 Ibiden Co Ltd 搬送用ロール
JPH0495294U (fr) * 1990-12-28 1992-08-18
JPH1129826A (ja) * 1997-07-10 1999-02-02 Ask Tekunika:Kk 断熱ロール

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0261493A (ja) * 1988-08-29 1990-03-01 Ibiden Co Ltd 高耐熱ロール
JPH0651260U (ja) * 1992-12-21 1994-07-12 新日本製鐵株式会社 熱処理炉用ハースロール

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01201417A (ja) * 1988-02-05 1989-08-14 Ask Corp ローラーハース型加熱炉用搬送ロール
JPH02129315A (ja) * 1988-11-08 1990-05-17 Ibiden Co Ltd ステンレス鋼搬送用ロール
JPH03197615A (ja) * 1989-12-26 1991-08-29 Ibiden Co Ltd 搬送用ロール
JPH0495294U (fr) * 1990-12-28 1992-08-18
JPH1129826A (ja) * 1997-07-10 1999-02-02 Ask Tekunika:Kk 断熱ロール

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016160449A (ja) * 2015-02-27 2016-09-05 三菱日立パワーシステムズ株式会社 断熱ローラ

Also Published As

Publication number Publication date
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