GB920150A - Rotary hearth furnace control - Google Patents

Rotary hearth furnace control

Info

Publication number
GB920150A
GB920150A GB38501/61A GB3850161A GB920150A GB 920150 A GB920150 A GB 920150A GB 38501/61 A GB38501/61 A GB 38501/61A GB 3850161 A GB3850161 A GB 3850161A GB 920150 A GB920150 A GB 920150A
Authority
GB
United Kingdom
Prior art keywords
hearth
discharging
control
charging
counting
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.)
Expired
Application number
GB38501/61A
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.)
Salem Brosius Inc
Original Assignee
Salem Brosius Inc
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 Salem Brosius Inc filed Critical Salem Brosius Inc
Publication of GB920150A publication Critical patent/GB920150A/en
Expired 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
    • F27B9/14—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
    • F27B9/16—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 circular or arcuate path
    • 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
    • C21D9/0037—Rotary furnaces with vertical axis; Furnaces with rotating floor
    • 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 peculiar to 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)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Tunnel Furnaces (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Abstract

920,150. Charging and discharging rotary hearth furnaces. SALEM-BROSIUS Inc. Oct. 27, 1961 [March 28, 1961], No. 38501/61. Class 51 (2). In a rotary hearth furnace having automatic charging and discharging means which deliver articles to a rotatable hearth and remove the same after heating, a control is provided comprising hearth travel measuring means generating electric pulses which are counted by counting means which in turn operate means controlling and co-ordinating the rotation of the hearth and the operation of the charging and discharging means. The drive to a rotatable hearth 11 is transmitted from a motor 17 through a reduction gear 18, drive shafts 19, 20, chain drives 21, 22 and final spur gears 25, 26 and is such that shafts 19, 20 rotate considerably faster than the hearth 11. A disc 28 with, for example, twenty holes 29 is mounted on and rotates with the shaft 20 and allows intermittent passage of light through the holes 29 from a source 32 to a photo-sensitive device 34b. The pulses of electricity generated by the device 34b are counted by two counting devices (Fig. 3, not shown) which in turn are linked with and may be preset to signal a control panel at a predetermined number of pulses. One of the two counting devices is used to control, by means of the control panel, the starting and stopping of the hearth in conjunction with the charging means 13 while the other counting device controls in a similar way the discharging of articles by discharging means 16. Thus a close and efficient control over the spacing on the hearth of billets 14, 15 is provided. A cycle time clock (Fig. 3, not shown) may also be included in the system to provide further time control of the hearth.
GB38501/61A 1961-03-28 1961-10-27 Rotary hearth furnace control Expired GB920150A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US98809A US3112918A (en) 1961-03-28 1961-03-28 Rotary hearth furnace control

Publications (1)

Publication Number Publication Date
GB920150A true GB920150A (en) 1963-03-06

Family

ID=22270995

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38501/61A Expired GB920150A (en) 1961-03-28 1961-10-27 Rotary hearth furnace control

Country Status (3)

Country Link
US (1) US3112918A (en)
DE (1) DE1235969B (en)
GB (1) GB920150A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986002103A1 (en) * 1984-09-27 1986-04-10 Ab Volvo A process for heat treatment of workpieces and a heat treatment installation suitable for such a process
WO1986002104A1 (en) * 1984-10-02 1986-04-10 Ab Volvo Method and installation for heat treatment, especially case-hardening

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3748088A (en) * 1972-06-02 1973-07-24 Xerox Corp Fuser control apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1783156A (en) * 1928-05-11 1930-11-25 George J Hagan Company Heat-treating apparatus
US2091562A (en) * 1935-08-30 1937-08-31 B F Sturtevant Co Air conditioning system
US2656106A (en) * 1942-08-10 1953-10-20 Howard P Stabler Shaft position indicator having reversible counting means
US2622861A (en) * 1950-03-08 1952-12-23 Randal E Talley Rotary hearth furnace
US2865103A (en) * 1955-02-17 1958-12-23 Ici Ltd Shaft rotation determining apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986002103A1 (en) * 1984-09-27 1986-04-10 Ab Volvo A process for heat treatment of workpieces and a heat treatment installation suitable for such a process
WO1986002104A1 (en) * 1984-10-02 1986-04-10 Ab Volvo Method and installation for heat treatment, especially case-hardening

Also Published As

Publication number Publication date
US3112918A (en) 1963-12-03
DE1235969B (en) 1967-03-09

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