US3892391A - Cooling apparatus for steel ingots or blooms using high-speed jet streams - Google Patents

Cooling apparatus for steel ingots or blooms using high-speed jet streams Download PDF

Info

Publication number
US3892391A
US3892391A US312457A US31245772A US3892391A US 3892391 A US3892391 A US 3892391A US 312457 A US312457 A US 312457A US 31245772 A US31245772 A US 31245772A US 3892391 A US3892391 A US 3892391A
Authority
US
United States
Prior art keywords
high speed
speed jet
substances
jet stream
chamber
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 - Lifetime
Application number
US312457A
Other languages
English (en)
Inventor
Ryuzo Okuno
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.)
Kawasaki Heavy Industries Ltd
Kawasaki Motors Ltd
Original Assignee
Kawasaki Heavy Industries 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
Priority claimed from JP9890871A external-priority patent/JPS5227607B2/ja
Priority claimed from JP2138372A external-priority patent/JPS518728B2/ja
Application filed by Kawasaki Heavy Industries Ltd filed Critical Kawasaki Heavy Industries Ltd
Application granted granted Critical
Publication of US3892391A publication Critical patent/US3892391A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • 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
    • B21B45/004—Heating the product
    • 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
    • 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
    • B21B45/023—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes by immersion in a bath
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/667—Quenching devices for spray quenching
    • 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
    • C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
    • 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
    • F27B9/06—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated
    • F27B9/10—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated heated by hot air or gas
    • 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 tunnel furnace
    • F27B9/201—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 tunnel furnace walking beam furnace
    • F27B9/202—Conveyor mechanisms therefor
    • F27B9/203—Conveyor mechanisms therefor having ramps
    • 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
    • F27B9/38—Arrangements of devices for charging
    • 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
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • 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
    • F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
    • F27B2009/122—Preheating
    • 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
    • F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
    • F27B2009/124—Cooling
    • F27B2009/126—Cooling involving the circulation of cooling gases, e.g. air
    • 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
    • F27B9/36—Arrangements of heating devices
    • F27B2009/3638—Heaters located above and under the track
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
    • F27D2003/0046—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities comprising one or more movable arms, e.g. forks
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
    • F27D2003/0051—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities comprising means to pick up the charge and put it down
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
    • F27D2003/008—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities comprising cross-beams or gantry cranes
    • 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
    • F27D9/00—Cooling of furnaces or of charges therein
    • F27D2009/007—Cooling of charges therein
    • F27D2009/0089—Quenching
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
    • F27M2001/00—Composition, conformation or state of the charge
    • F27M2001/15—Composition, conformation or state of the charge characterised by the form of the articles
    • F27M2001/1539—Metallic articles
    • F27M2001/1547—Elongated articles, e.g. beams, rails
    • F27M2001/1552—Billets, slabs

Definitions

  • the apparatus is provided with a casing comprising two or more zones. At least one of said zones is a high-speed jet zone in which a fluid having a low temperature is jetted onto the substances being cooled.
  • a convection current cooling zone or another high-speed jet zone is connected to the first high-speed jet zone.
  • a conveyor operates to successively feed the substances being treated into the casing, through the zones and to successively extract the thus treated substances from the casing. While in the high'speed jet zone or zones, the substances being treated are cooled by a heat transfer occuring at the surfaces of the said substances, said heat transfer being created by jetting a low temperature fluid onto the said surfaces.
  • the invention also relates to a cooling apparatus as above described which acts in conjunction with a separate cooling tank to cool substances such as steel ingots or blooms.
  • the substances after passing through the casing are transferred to the cooling tank by a carriage and a conveying roller device.
  • the substances are rapidly cooled to approximately normal temperature through the action of flowing streams of water or other cold liquids.
  • the subject matter of the present invention resides in a cooling apparatus in which a heat transfer is conducted between the substances to be treated, such as steel ingots or blooms, around which a large number of nozzles are arranged, and high-speed jet streams which gush out from the said nozzles, by utilizing the high coefficient of heat transfer on the surface of the said substances which results from the said jet streams.
  • the average coefficient of heat transfer (hm) on the surface of a plate against which the jet streams gushing out from a large number of arranged nozzles are flown vertically is as follows:
  • Num h 2 ons hm is defined with respect to the difference between the temperature of air before being flown into the nozzles and the temperature of the plate.
  • ml is a flowing speed in the center of the jet streams at the position of the plate.
  • A is a thermal conductivity
  • 'y is a coefficient of kinematic viscosity
  • the subject matter of the present invention also resides in a cooling apparatus which operates to continuously cool the said substances such as steel ingots or blooms.
  • the slabs or blooms which have been prepared from the ingot in the cogging mill are sometimes stored in the said mill, for the purpose of repairing any defective parts thereof or by virtue of production control, say restriction of output, whereupon it is necessary to cool the said substances nearly to normal temperature since these substances have a very high temperature of about 800- 900C immediately after the treatment in the said blooming mill.
  • the said means comprise pouring water onto the slabs or blooms or putting the same into a water tank, after the temperature of the said substances has been lowered by spontaneous cooling.
  • the said spontaneous cooling therefore, a very broad space is required for the said spontaneous cooling, and thus these means involve various defects such as high construction expenses for factory, low operation capacity of apparatus, etc.
  • the present invention is intended to improve the uneconomical operation of the conventional means wherein a large amount of heat energy contained in an exhaust gas is thrown away.
  • the present invention also relates to a cooling apparatus to cool the substances for a short period of time and to compactly integrate the whole apparatus for the said cooling treatment, for the purpose of elimi nating the various defects of the prior art techniques as explained above, by utilizing the high coefficient of heat transfer conducted on the surface of the substance to be treated by the combination use of high-speed jet streams of a low temperature gas having a flowing speed of about 50 I00 m/s or more than I00 m/s and a high-speed water flow in a water tank, etc.
  • the present invention provides a cooling appara tus consisting of a combination of a high-speed jet chamber which contains an interior conveyer therein and which operates to cool the substances to be treated having a temperature of about 800 900C by means of the high-speed jet streams, and a cooling tank which operates to further cool the substances which have already been cooled to about 400 500C in the said jet chamber, said further cooling being nearly to normal temperature by means of the high-speed water flow therein.
  • FIG. 1 is a partly cut-away side elevation of a cooling apparatus embodying the present invention.
  • FIG. 2 is a sectional view taken on the line A-A of FIG. I.
  • FIG. 3 is a sectional view taken on the line B-B of FIG. I.
  • FIG. 4 is a partly cut-away side elevation of a modification of the cooling apparatus according to the present invention.
  • FIG. 5 is a partly cut-away front elevation of another modification of the cooling apparatus according to the present invention.
  • FIG. 6 is a sectional view taken on the line AA of FIG. 5.
  • FIG. 7 is a partly enlarged sectional view of the cooling apparatus.
  • FIG. 8 is a sectional view of a cooling tank.
  • FIG. 9 is a partly cut-away side elevation of a further modification of cooling apparatus according to the present invention.
  • FIGS. 1-3 The preferred embodiment of the present invention is shown in FIGS. 1-3.
  • the radiation heat energy which has been radiated from the substances to be treated is first caught by the steel casing 11, and the heat is then transferred to a low temperature fluid via the said casing.
  • the steel casing II which is located in the radiation heat transfer zone b, is a box-shaped steel casing to which the low temperature fluid is fed.
  • Other aspects of this mechanism will be better understood after an explanation of corresponding aspects of the FIGS. 5-8 embodiment.
  • the temperature of the low temperature fluid which has passed through the radiation heat transfer zone (19') is somewhat elevated and then the said fluid is fed into the nozzles of the jet zone (a). Thereafter, the fluid is jetted out into the apparatus as high-speed jet streams so as to cool the substances to be treated.
  • the two jet zones a are separated from each other, wherein the pressure ofthe high temperature air which has been released from a first jet zone a is elevated by means of a fan 12 and then the said air is fed into a second jet zone (a') in which jet nozzles are provided, or in other words the said air is jetted into the apparatus from the said nozzles as highspeed jet streams.
  • the heat transfer efficiency may extremely be improved.
  • the present apparatus may efficiently be recovered.
  • the present invention may be utilized for any and every apparatus for cooling substances by the use of highspeed jet streams.
  • This heat transfer utilizes the high coefficient of heat transfer on the surface of the substances caused by the use of the low temperature jet fluid, which is a principle mechanism of the rapid cooling attained in thisjet chamber.
  • the heat energy contained in the substances to be treated is transferred to the jet stream fluid, and thus the said fluid thus heated may be utilized as a heat source in a boiler or in other various industrial furnaces, etc. for example, as a high tempera ture air for combustion.
  • the substances 1 to be treated are put on fixed beams 4 which are successively conveyed in the apparatus by the upper and lower movement and the front and rear movement of walking beams 3. That is, the substances (1) are conveyed by the rectangular movement of the same, via wheels 8 put on inclined rails 7.
  • Posts 2 of the walking beams 3 are connected with a driving beam in a lower portion of the apparatus. piercing through a lower portion of a casing 10. In the piercing portion, gas seal boxes 6 and seal plates 18 are provided so as to prevent a gas leakage in the apparatus.
  • Each of the posts 2 and the walking beams 3 is covcred with heat shielding plates 5, since both the posts 2 and the beams 3 are exposed to radiation from the high temperature substances and are exposed to a high temperature fluid.
  • air cooling or water cooling pipes may be used therefor.
  • casting rails 3' are located on both the fixed beam side and the walking beam side so as to prevent oxidation erosion.
  • the jet chamber consists of, as shown in FIG. 5, a two-stage box-shape steel casing, made of a steel plate.
  • a low temperature fluid which has been forwarded under pressure from a blower is fed into the interior part of the casing box (b), while the radiation energy radiated from the high temperature substances 1 is caught by the casing 11, and thereafter the said energy is transferred to the introduced low temperature fluid via the said casing 11, which is a role of the interior box-shape steel casing (b).
  • the nozzles 9 are fixed to the exterior box-steel casing (a) in the form ofa square arrangement or a zigzag arrangement or any other optional arrangement. and they are projected into the interior of the chamber, piercing the interior box-steel casing (b).
  • the low temperature fluid which has passed through the interior box-steel casing (b) is somewhat heated and then is reversely introduced into the exterior box-steel casing (a) at the outlet side for extraction and then fed into the respective nozzles 9. Thereafter the said fluid is jetted out from the nozzles into the chamber under high speed, where it strikes against the surface of the substances to be treated, whereupon a heat transfer takes place between the fluid and the substances. After the heat transfer, the fluid is taken away through the outlet 13 provided at one end portion of the chamber.
  • a nozzle 17 is provided, and the fluid in the interior of the chamber is sealed by means of an air jet film gushing out from the said nozzle 17.
  • the substances to be treated are fed to the front of the chamber by means of a rollgang l5 and then are conveyed into the interior thereof by means of the walking beams 3.
  • a pusher may also be used for the said feeding and conveying means.
  • Conveying apparatus This apparatus consists of a pendent L-shape hook 19 which supports the substance 1 and which may move up and down and a carriage 20 which carries the hook I) back and forth.
  • the substance I which has been ex tracted from the high-speed jet chamber is carried to the upper position ofa cooling tank 21 in the next step by means of the L-shape hook l9 of this apparatus, and then the hook is brought down together with the substance l at that position at last to sink wholly the substance 1 into water of the cooling tank 21.
  • the substance 1 is thereafter cooled nearly to normal temperature in the said cooling tank 21 for a determined period of time, and then in lifted up again and is carried by means ofthe carriage 20 to a conveying roller 22 in the final step.
  • the carriage 20 is put on a carriage supporting beam 23 via wheels 24, which beam 23 is connected directly to the jet chamber.
  • the back and forth movement of the carriage 20 is accomplished by means of a plumage driving device 25 which is located on the said carriage 2ft.
  • the hook 19 which is hung on the carriage 20 is moved up and down by means of a driving device which also is located on the said carriage 20.
  • Cooling tank The substances which have been extracted from the high-speed jet chamber have at the time of being extracted a temperature of at most about 450500C, and thus it is necessary to further cool the said sub stances nearly to normal temperature rapidly and in a short period of time. ln the present apparatus, therefore, the cooling tank 21 is parted into two parts by means of a partition wall 28 and the water in both of the upper side and the lower side water rooms 26 and 27 is circulated by means of a circulation pump 30 whereby a high flowing speed may be imparted to the water in the tank, for the purpose of the above said rapid cooling of the substance 1, or more precisely for the purpose of increasing the coefficient of heat transfer between the substance 1 sunk into water and the water in the tank, whereby the substances may be cooled rapidly.
  • the substance I which is supported by the L-shape hook I9 is placed in the upper side water room 26 wherein the water is circulated by means of the circulation pump to make a high-speed water flow therein.
  • a high coefficient of turbulent flow heat transfer is conducted between the surface of the said substance and the said water flow, and thus the heat energy of the substance is efficiently transferred to the water flow whereby the said substance is rapidly cooled nearly to normal temperature.
  • the lower portion of the casing of the upper and the lower water rooms 26 and 27 of the cooling tank 2] is inclined and a scale hopper 29 is provided at one end of the inclined casing wherein the scales are collected. The scales collected in the hopper may be removed periodically.
  • substances having high temperature may be cooled continuously and for a short period of time, according to the present invention, and further, the whole apparatus for cooling may compactly be integrated.
  • the whole is compactly integrated and thus the necessary space therefor may be reduced much. Further, repairing of the defective parts on slabs, etc. may be performed immediately, and thus the operation efficiency may also improved. These are also merits of the present invention.
  • a cooling apparatus comprising in line, a radiation cooling chamber; a high-speed jet chamber in which substances to be treated, such as steel ingots or blooms, are subjected to contact with high-speed jet streams of a cold fluid gushing out from a large number of nozzles located therein, thereby carrying out a heat transfer between the substances and the cold fluid to cool the former, the substances being conveyed in the apparatus during the course of the cooling; a cooling tank in which the substances carried out from the said highspeed jet chamber are rapidly cooled nearly to normal temperature by increasing the flowing speed of water or a cold liquid in the tank; and a carriage which operates to convey the said substances from the said highspeed jet chamber into the said cooling tank.
  • a cooling apparatus for substances, such as steel ingots or blooms, to be cooled from high temperatures comprising:
  • a substance to be cooled can first be gradually cooled in said radiation cooling chamber and then be quickly further cooled in said first high speed jet stream chamber and said cooling tank.
  • a cooling apparatus as claimed in claim 2 wherein said first means comprise walking beams for supporting substances to be cooled, posts supporting said walking beams and extending through apertures in the floor of said first high speed jet stream chamber, a system of inclined rails, and wheels rotatably mounted on the lower ends of said posts for contact with and guidance by said system of inclined rails and further comprising a gas seal box mounted on each of said posts beneath said first high speed jet stream chamber and cooperating seal plates mounted on the floor of said first high speed jet stream chamber surrounding said apertures therein and extending downwardly into said gas seal boxes, whereby gas leakage from said first high speed jet stream chamher is prevented.
  • a cooling apparatus for substances, such as steel ingots or blooms, to be cooled from high temperatures comprising:
  • a first plurality of nozzles located in said first high speed jet stream chamber and adapted to jet at a high speed a low temperature fluid on a substance located in said first high speed jet stream chamber;
  • third means for providing and jetting through said second plurality of nozzles at a high speed a low temperature fluid.
  • said first means comprise walking beams for supporting substances to be cooled posts supporting said walking beams and extending through apertures in the floor of said first high speed jet stream chamber.

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)
  • Combustion & Propulsion (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
US312457A 1971-12-06 1972-12-06 Cooling apparatus for steel ingots or blooms using high-speed jet streams Expired - Lifetime US3892391A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9890871A JPS5227607B2 (fr) 1971-12-06 1971-12-06
JP2138372A JPS518728B2 (fr) 1972-02-29 1972-02-29

Publications (1)

Publication Number Publication Date
US3892391A true US3892391A (en) 1975-07-01

Family

ID=26358431

Family Applications (1)

Application Number Title Priority Date Filing Date
US312457A Expired - Lifetime US3892391A (en) 1971-12-06 1972-12-06 Cooling apparatus for steel ingots or blooms using high-speed jet streams

Country Status (5)

Country Link
US (1) US3892391A (fr)
FR (1) FR2165925B1 (fr)
GB (1) GB1392309A (fr)
IT (1) IT973880B (fr)
SU (1) SU553939A3 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003763A (en) * 1974-10-26 1977-01-18 Ofenbaugesellschaft Berg U. Co. M.B.H. Method of and plant for patenting steel wire bundles
US4351633A (en) * 1979-10-18 1982-09-28 Voest-Alpine Aktiengesellschaft Method of recovering the sensible heat of continuously cast slabs
US5314169A (en) * 1992-08-26 1994-05-24 A. C. Leadbetter & Son, Inc. Method and apparatus for heat treating elongate metallic products
EP0960670A1 (fr) * 1998-05-28 1999-12-01 Kawasaki Steel Corporation Procédé pour refroidir des brames au moyen d'eau et une cuve contenant l'eau de refroidissement
US6364974B1 (en) * 1999-04-20 2002-04-02 Iq Technologies, Inc. Quenching apparatus and method for hardening steel parts
US20150314349A1 (en) * 2012-12-19 2015-11-05 SMS Siemag Aktiegesellschaft Device and method for cooling rolled stock
CN108411229A (zh) * 2018-03-27 2018-08-17 福建省闽发铝业股份有限公司 一种铝型材挤压在线淬火工艺的快速冷却方法
WO2020147844A1 (fr) * 2019-01-18 2020-07-23 苏州舒跃碳吸附剂有限公司 Dispositif de décharge et de refroidissement d'un four d'activation
WO2021245716A1 (fr) * 2020-06-04 2021-12-09 Danieli & C. Officine Meccaniche S.P.A. Appareil de chauffage de produits en acier
US20220090862A1 (en) * 2019-03-05 2022-03-24 Sms Group S.P.A. Furnace with movable beam load handling system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4234285A1 (de) * 1992-10-10 1994-04-14 Heimsoth Verwaltungen Verfahren zur Wärmebehandlung von metallischem Gut
CN111912237B (zh) * 2020-06-29 2022-01-28 中国电子科技集团公司第四十八研究所 软磁材料烧结炉自动卸料清扫装置及方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3148868A (en) * 1960-03-24 1964-09-15 United States Steel Corp Reheating furnace
US3262688A (en) * 1965-06-03 1966-07-26 Midland Ross Corp Jet convection heat transfer
US3672861A (en) * 1967-11-16 1972-06-27 Libbey Owens Ford Co Apparatus for tempering flat sheets or plates of glass
US3744963A (en) * 1971-11-19 1973-07-10 Nat Lumberman S Bank & Trust C Heat treatment
US3776712A (en) * 1966-04-25 1973-12-04 Pilkington Brothers Ltd Treatment of glass sheet

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3148868A (en) * 1960-03-24 1964-09-15 United States Steel Corp Reheating furnace
US3262688A (en) * 1965-06-03 1966-07-26 Midland Ross Corp Jet convection heat transfer
US3776712A (en) * 1966-04-25 1973-12-04 Pilkington Brothers Ltd Treatment of glass sheet
US3672861A (en) * 1967-11-16 1972-06-27 Libbey Owens Ford Co Apparatus for tempering flat sheets or plates of glass
US3744963A (en) * 1971-11-19 1973-07-10 Nat Lumberman S Bank & Trust C Heat treatment

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003763A (en) * 1974-10-26 1977-01-18 Ofenbaugesellschaft Berg U. Co. M.B.H. Method of and plant for patenting steel wire bundles
US4351633A (en) * 1979-10-18 1982-09-28 Voest-Alpine Aktiengesellschaft Method of recovering the sensible heat of continuously cast slabs
US5314169A (en) * 1992-08-26 1994-05-24 A. C. Leadbetter & Son, Inc. Method and apparatus for heat treating elongate metallic products
EP0960670A1 (fr) * 1998-05-28 1999-12-01 Kawasaki Steel Corporation Procédé pour refroidir des brames au moyen d'eau et une cuve contenant l'eau de refroidissement
US6250370B1 (en) 1998-05-28 2001-06-26 Kawasaki Steel Corporation Method for water-cooling hot metal slabs
US6364974B1 (en) * 1999-04-20 2002-04-02 Iq Technologies, Inc. Quenching apparatus and method for hardening steel parts
US20150314349A1 (en) * 2012-12-19 2015-11-05 SMS Siemag Aktiegesellschaft Device and method for cooling rolled stock
US9643224B2 (en) * 2012-12-19 2017-05-09 Sms Group Gmbh Device and method for cooling rolled stock
CN108411229A (zh) * 2018-03-27 2018-08-17 福建省闽发铝业股份有限公司 一种铝型材挤压在线淬火工艺的快速冷却方法
WO2020147844A1 (fr) * 2019-01-18 2020-07-23 苏州舒跃碳吸附剂有限公司 Dispositif de décharge et de refroidissement d'un four d'activation
US20220090862A1 (en) * 2019-03-05 2022-03-24 Sms Group S.P.A. Furnace with movable beam load handling system
WO2021245716A1 (fr) * 2020-06-04 2021-12-09 Danieli & C. Officine Meccaniche S.P.A. Appareil de chauffage de produits en acier

Also Published As

Publication number Publication date
FR2165925B1 (fr) 1976-04-23
GB1392309A (en) 1975-04-30
IT973880B (it) 1974-06-10
SU553939A3 (ru) 1977-04-05
DE2259357A1 (de) 1973-06-20
DE2259357B2 (de) 1977-04-07
FR2165925A1 (fr) 1973-08-10

Similar Documents

Publication Publication Date Title
US3892391A (en) Cooling apparatus for steel ingots or blooms using high-speed jet streams
US4373706A (en) Apparatus for heat treatment of material to be worked on, especially of aluminum or magnesium alloys
CN113430307B (zh) 液态钢渣干法处理装置及其工作方式
US3841614A (en) Apparatus for preheating steel ingot or blooms by the use of high-speed jet streams as well as heating furnace using the same
US3749550A (en) Walking beam furnace
US1811522A (en) Furnace
US3567195A (en) Walking beam continuous heating furnace
US4135704A (en) Method and apparatus for heat treatment of material to be worked on, especially of aluminum alloys or magnesium alloys
US5689894A (en) Cooling system for annealing material continuously moving on a transport means
US4245818A (en) Apparatus for heat treatment of material to be worked on, especially of aluminum or magnesium alloys
US1695224A (en) Heat-treating furnace
US2840361A (en) Tunnel furnace for heat treating objects
US2669442A (en) Annealing apparatus
US4106894A (en) Apparatus for heat treating fragmented materials
US3623714A (en) Method of and apparatus for operating a furnace
DE3468237D1 (en) Gas cooling and recirculating device in continuous strip furnaces
US3480264A (en) Metallurgical walking beam furnace
US2754104A (en) Method and apparatus for heating ingots
DE2412695C3 (de) Verfahren und Vorrichtung zum Kühlen von heißem Schüttgut
US3606280A (en) Walking beam furnace construction
SU378422A1 (ru) УСТРОЙСТВО дл ТЕРМИЧЕСКОГО УПРОЧНЕНИЯ ПРОФИЛЬНОГО ПРОКАТА
US2369419A (en) Heating furnace
MXPA04008168A (es) Aparato para moldeo continuo de masa fundida de metal.
JPS55131118A (en) Heat treatment furnace
JPS5515911A (en) Glass plate cooling method