US3675909A - Billet feed system for rolling mills - Google Patents

Billet feed system for rolling mills Download PDF

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Publication number
US3675909A
US3675909A US42784A US3675909DA US3675909A US 3675909 A US3675909 A US 3675909A US 42784 A US42784 A US 42784A US 3675909D A US3675909D A US 3675909DA US 3675909 A US3675909 A US 3675909A
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US
United States
Prior art keywords
furnace
rollway
billets
roll stand
roll
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
US42784A
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English (en)
Inventor
Klaus Neumann
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.)
Moeller and Neuman GmbH
Original Assignee
Moeller and Neuman GmbH
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 DE19691928510 external-priority patent/DE1928510C/de
Application filed by Moeller and Neuman GmbH filed Critical Moeller and Neuman GmbH
Application granted granted Critical
Publication of US3675909A publication Critical patent/US3675909A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B21B45/04—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 de-scaling, e.g. by brushing

Definitions

  • Fieid I250 200 are moved out of the furnace oppositely to the rolling 2 14/ 263/6 i 6 direction and are conveyed crosswise on a rollway disposed in front of the de-scaling device and whose extension toward the first roll stand is located within the furnace chamber.
  • the invention relates to a billet feed system for rolling mills and particularly to an arrangement for feeding billets from a furnace.
  • the furnace may be a so-called ram furnace with an ejector mechanism but an oscillating bed furnace can also be used within the scope of the invention, in which the billets fall along a chute to the feed rollway of the first roll stand.
  • the features of the present invention are however explained in conjunction with a ram furnace.
  • the object of the invention is to provide an arrangement for feeding billets from a furnace to the first roll stand of a roll train arranged near the furnace, which takes into account the low entry speed of the material into the first roll stand called for, for example, by the laws of continuous rolling, but avoids an unduly great loss of temperature by a de-scaling procedure, and furthermore de-scales the billets more efficiently than heretofore.
  • the invention provides a first rollway arranged on the side of the furnace remote from the roll stand, which carries the billets away from the furnace oppositely to the rolling direction, as well as a second feed rollway connected to the first rollway by means of cross feeders or the like, and arranged in advance of the roll stand and within which a de-scaling device is provided beyond which the billets run out freely.
  • the billets ejected oppositely to the rolling direction or thosetaken from an oscillating bed furnace can dwell as long as required on the first rollway and the cross feeder in order that easily removable scale layers are produced. The subsequent de-scaling is therefore far more satisfactory than before.
  • the billets have a higher temperature when they reach the first roll stand than was previously possible when rolling from a furnace provided with an interposed de-scaling device. Furthermore the part of the feed rollway extending in the rolling direction covered by the width of the furnace, is arranged to run within the furnace chamber through an enlargement of the furnace in order to avoid a fall in temperature at the rear end of the billet as was previously obtained during the slow entry of the billet into the first roll stand.
  • FIG. 2 shows the arrangement according to the invention in conjunction with a ram furnace
  • FIG. 3 shows the new arrangement in conjunction with an oscillating bed furnace as seen in the direction of the two rollways.
  • the known arrangement according to FIG. 1 comprises a ram furnace 2' with an ejector machine 3 which pushes the billets out of the furnace 2 in the rolling direction.
  • the billets pass first through a de-scaling device 4' and then into a first roll stand 5 of an associated roll train, said stand being placed near the furnace so that the travel time of the billets through the de-scaling device 4' depends on the entry speed of the first roll stand 5 and is necessarily considerable.
  • the same ram furnace 2 is shown more completely in FIG. 2 with the last three rolls of the billet feed rollway 6 and the billet pusher bar 7.
  • the ejector mechanism is arranged according to the invention so that the billets are ejected from the furnace 2 oppositely to the rolling direction and are received by a first rollway 8 arranged on the opposite side of the furnace to the first roll stand 5.
  • the billets can be transferred from this first rollway 8 to a second rollway 10, running parallel to the billet feed rollway 6, by means of a cross feeder 9, which rollway 10 is the feed rollway for the first stand 5 of the roll train and lies in the rolling line thereof.
  • a de-scaling device 4 is arranged within the delivery rollway 10, the part of which is covered by the width of the furnace 2 and extends within an enlargement 2a thereof.
  • a drum deflector 11 or the like is arranged in front of the first roll stand 5 for distributing the billets to various calibres of the first roll stand 5 in the case of multi-core rolling.
  • the method of operation of the arrangement according to the invention is as follows: the billets arriving on the rollway 6 pass into the furnace 2 and are conveyed through the latter in the direction of the arrow by the pusher bar 7. A billet l2 placed in front of the ejector mechanism 3 is transferred during ejection on to the first rollway 8 from which it passes on to the delivery rollway 10 by means of the cross feeder 9. The time during which a billet is located on the rollways 8 and 10 as well as the cross feeder 9 is decisive for the formation of a skin on the scale and can be selected as desired.
  • the billet passes through the de-scaling device 4 at high speed since it can run out freely on the part 10a of the feed rollway 10. From this point onwards the billet passes over the drum deflector 1 l to the first roll stand 5 of the associated roll train and it is heated up in the extended part 2a of the furnace.
  • the extended part 2a of the furnace can be divided from the rest of the furnace chamber so that its temperature is lower than that in the main furnace chamber.
  • the ejector mechanism 3 is arranged approximately beside the first roll stand 5 of the roll train in constructional arrangements of the invention with a ram furnace 2.
  • FIG. 3 The constructional example according to FIG. 3 is concerned with an arrangement employing an oscillating bed furnace 14 in which the billets pass over a chute 15 on to the first rollway 16 which commences already beneath the furnace l4 and is extended in the same way as the rollway 8 in FIG. 2.
  • the delivery rollway 17 is arranged in an extended furnace chamber 14a which extends over the first rollway 16.
  • FIG. 3 shows also the outlet opening 14b of the furnace 14.
  • the functions of the cross feeder device 9 of FIG. 2 are carried out by means of a chain feeder 18 with lifting members 18a which receives the billets from the first rollway 16, which is conveniently provided with tapered or inclined rolls, and conveys them over a chute 20 to the delivery rollway 17 at the higher level whereby the difference in the height is allowed for.
  • An arrangement for feeding billets from a furnace to the first roll stand of a roll train arranged on one side of the furnace comprising: a first rollway means positioned on the side of the furnace opposite the roll stand for receiving and conveying the billets from the furnace in a direction opposite to the rolling direction, a second rollway connected to the first rollway by cross feeder means and arranged in front of the roll stand, a de-scaling device in the path of said second rollway, whereby the billets run freely beyond the de-scaling device, a portion of said second rollway extending transverse to the furnace, said portion of said second rollway running transverse to the furnace passing through a portion of the furnace chamber.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
US42784A 1969-06-04 1970-06-02 Billet feed system for rolling mills Expired - Lifetime US3675909A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691928510 DE1928510C (de) 1969-06-04 Anordnung zum Zuführen von Knüppeln aus einem Ofen zu dem ofennah angeordne ten ersten Walzgerüst einer Walzenstraße

Publications (1)

Publication Number Publication Date
US3675909A true US3675909A (en) 1972-07-11

Family

ID=5736110

Family Applications (1)

Application Number Title Priority Date Filing Date
US42784A Expired - Lifetime US3675909A (en) 1969-06-04 1970-06-02 Billet feed system for rolling mills

Country Status (4)

Country Link
US (1) US3675909A (ru)
JP (1) JPS4817407B1 (ru)
FR (1) FR2049755A5 (ru)
GB (1) GB1288876A (ru)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0917915A2 (en) * 1997-11-24 1999-05-26 Morgan Construction Company Apparatus for and method of processing billets in a rolling mill
CN114703359A (zh) * 2022-03-31 2022-07-05 新余钢铁股份有限公司 一种推钢式步进加热炉坯料输送控制系统及方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1466018A (en) * 1921-03-22 1923-08-28 Surface Comb Co Inc Feeding mechanism
US1739250A (en) * 1927-06-24 1929-12-10 Herman F Hoevel Furnace
US1808033A (en) * 1929-07-05 1931-06-02 Morgan Construction Co Handling of hot metal stock preparatory to its reduction by rolling
US1965868A (en) * 1930-05-21 1934-07-10 Harry F Vickers Material handling apparatus
US1989532A (en) * 1933-08-29 1935-01-29 United Eng Foundry Co Method and apparatus for hot rolling strip
US3154298A (en) * 1961-06-27 1964-10-27 Stein & Roubaix Multizone pusher-type furnace

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1466018A (en) * 1921-03-22 1923-08-28 Surface Comb Co Inc Feeding mechanism
US1739250A (en) * 1927-06-24 1929-12-10 Herman F Hoevel Furnace
US1808033A (en) * 1929-07-05 1931-06-02 Morgan Construction Co Handling of hot metal stock preparatory to its reduction by rolling
US1965868A (en) * 1930-05-21 1934-07-10 Harry F Vickers Material handling apparatus
US1989532A (en) * 1933-08-29 1935-01-29 United Eng Foundry Co Method and apparatus for hot rolling strip
US3154298A (en) * 1961-06-27 1964-10-27 Stein & Roubaix Multizone pusher-type furnace

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0917915A2 (en) * 1997-11-24 1999-05-26 Morgan Construction Company Apparatus for and method of processing billets in a rolling mill
US6233994B1 (en) * 1997-11-24 2001-05-22 Morgan Construction Company Apparatus for and method of processing billets in a rolling mill
EP0917915A3 (en) * 1997-11-24 2002-11-13 Morgan Construction Company Apparatus for and method of processing billets in a rolling mill
CN114703359A (zh) * 2022-03-31 2022-07-05 新余钢铁股份有限公司 一种推钢式步进加热炉坯料输送控制系统及方法

Also Published As

Publication number Publication date
DE1928510A1 (de) 1970-12-17
DE1928510B2 (de) 1973-01-04
GB1288876A (ru) 1972-09-13
FR2049755A5 (ru) 1971-03-26
JPS4817407B1 (ru) 1973-05-29

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