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EP0225432A3 - Heat treatment method and heat treatment apparatus - Google Patents

Heat treatment method and heat treatment apparatus

Info

Publication number
EP0225432A3
EP0225432A3 EP86111599A EP86111599A EP0225432A3 EP 0225432 A3 EP0225432 A3 EP 0225432A3 EP 86111599 A EP86111599 A EP 86111599A EP 86111599 A EP86111599 A EP 86111599A EP 0225432 A3 EP0225432 A3 EP 0225432A3
Authority
EP
European Patent Office
Prior art keywords
conveying
heated
heat treatment
furnace
materials
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Withdrawn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
EP86111599A
Other languages
German (de)
French (fr)
Other versions
EP0225432A2 (en
Inventor
Ono Takashi
Ishimoto Takashi
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.)
Daido Steel Co Ltd
Original Assignee
Daido Steel Co Ltd
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 Daido Steel Co Ltd filed Critical Daido Steel Co Ltd
Publication of EP0225432A2 publication Critical patent/EP0225432A2/en
Publication of EP0225432A3 publication Critical patent/EP0225432A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
    • F27B9/021—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces having two or more parallel tracks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path
    • F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path being carried by a conveyor
    • F27B9/2407—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path being carried by a conveyor the conveyor being constituted by rollers (roller hearth furnace)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories or equipment specially adapted for furnaces of these types
    • F27B9/40—Arrangements of controlling or monitoring devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00—Arrangements of controlling devices
    • F27D2019/0028—Regulation
    • F27D2019/0059—Regulation involving the control of the conveyor movement, e.g. speed or sequences

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Tunnel Furnaces (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Abstract

In a furnace (2) having an inlet (8a, 8b, 8c) and an outlet (9a, 9b, 9c), a plurality of conveying components (a, b, c) for conveying materials to be heated from the inlet toward the outlet (8a to 9a, 8b to 9b 8c to 9c) are provided in parallel. A plurality of the materials are continuously loaded on the conveying components at the inlet of the furnace, subjected to heat treatment during the conveying process performed by the conveying components in the furnace, and successively reach the outlet. In this process, the conveying components are driven at conveying speeds which are different from each other. Among a plurality of the materials to be heated, these materials which are required to be heated for a long time are loaded on conveying components which are driven at low speed. As a result, they are conveyed and heated in the furnace for a long time. On the other hand, the materials which are only required to be heated for a short time are loaded on the conveying components driven at a high speed and consequently, they are conveyed and heated in the furnace for a short time.
EP86111599A 1985-11-11 1986-08-21 Heat treatment method and heat treatment apparatus Withdrawn EP0225432A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP252470/85 1985-11-11
JP25247085A JPS62112717A (en) 1985-11-11 1985-11-11 Method and apparatus for heat treatment

Publications (2)

Publication Number Publication Date
EP0225432A2 EP0225432A2 (en) 1987-06-16
EP0225432A3 true EP0225432A3 (en) 1988-11-23

Family

ID=17237827

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86111599A Withdrawn EP0225432A3 (en) 1985-11-11 1986-08-21 Heat treatment method and heat treatment apparatus

Country Status (2)

Country Link
EP (1) EP0225432A3 (en)
JP (1) JPS62112717A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6833533B1 (en) * 2004-03-12 2004-12-21 Wolfe Electric, Inc. Air impingement conveyor over
JP5162959B2 (en) * 2007-05-22 2013-03-13 大同特殊鋼株式会社 In-furnace workpiece extraction device for heat treatment furnace
WO2022156161A1 (en) * 2021-01-20 2022-07-28 信诺先端热工科技(苏州)有限公司 Multi-channel wheel-rail tunnel kiln

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR805248A (en) * 1935-04-25 1936-11-14 Improvements to conveyor furnaces
DE970496C (en) * 1954-01-22 1958-09-25 Ofag Ofenbau Ag Roller hearth
DE1136360B (en) * 1959-02-17 1962-09-13 Iaofuia Ofenbau Union G M B H Roller hearth furnace
DE1143840B (en) * 1956-02-08 1963-02-21 Iaofuia Ofenbau Union G M B H Roller hearth for a roller hearth furnace
FR1389180A (en) * 1964-03-10 1965-02-12 Aeg Furnace fitted with two running tracks, formed by rollers
DE2718737A1 (en) * 1976-08-25 1978-03-02 Siemens Ag Multiple roller conveyor for steel bars - has parallel tracks each formed by aligned pulleys with different transfer speeds (OE 15.12.77)

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR805248A (en) * 1935-04-25 1936-11-14 Improvements to conveyor furnaces
DE970496C (en) * 1954-01-22 1958-09-25 Ofag Ofenbau Ag Roller hearth
DE1143840B (en) * 1956-02-08 1963-02-21 Iaofuia Ofenbau Union G M B H Roller hearth for a roller hearth furnace
DE1136360B (en) * 1959-02-17 1962-09-13 Iaofuia Ofenbau Union G M B H Roller hearth furnace
FR1389180A (en) * 1964-03-10 1965-02-12 Aeg Furnace fitted with two running tracks, formed by rollers
DE2718737A1 (en) * 1976-08-25 1978-03-02 Siemens Ag Multiple roller conveyor for steel bars - has parallel tracks each formed by aligned pulleys with different transfer speeds (OE 15.12.77)

Also Published As

Publication number Publication date
EP0225432A2 (en) 1987-06-16
JPS62112717A (en) 1987-05-23

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Legal Events

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Effective date: 19901019

RIN1 Information on inventor provided before grant (corrected)

Inventor name: TAKASHI, ISHIMOTO

Inventor name: TAKASHI, ONO