EP0630696A1 - Procédé et dispositif pour le refroidissement soigné de barres d'acier spécial ou inoxydable laminées à chaud - Google Patents

Procédé et dispositif pour le refroidissement soigné de barres d'acier spécial ou inoxydable laminées à chaud Download PDF

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Publication number
EP0630696A1
EP0630696A1 EP94109154A EP94109154A EP0630696A1 EP 0630696 A1 EP0630696 A1 EP 0630696A1 EP 94109154 A EP94109154 A EP 94109154A EP 94109154 A EP94109154 A EP 94109154A EP 0630696 A1 EP0630696 A1 EP 0630696A1
Authority
EP
European Patent Office
Prior art keywords
lengths
cross conveyor
roller table
cooling
bed
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.)
Granted
Application number
EP94109154A
Other languages
German (de)
English (en)
Other versions
EP0630696B1 (fr
Inventor
Hans-Peter Drügh
Rolf Stodt
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.)
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag AG
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 SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP0630696A1 publication Critical patent/EP0630696A1/fr
Application granted granted Critical
Publication of EP0630696B1 publication Critical patent/EP0630696B1/fr
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
    • B21B43/00—Cooling beds, whether stationary or moving; Means specially associated with cooling beds, e.g. for braking work or for transferring it to or from the bed

Definitions

  • the invention relates to a method and a device for gentle cooling of hot-rolled special and stainless steels, which are divided into partial lengths following a rolling mill and braked by an upstream channel in the material flow upstream of a cooling bed.
  • the rolling stock After rolling out in the rolling or finishing train, the rolling stock is usually divided into as long partial lengths as possible, for example 70 to 120 m, by a cooling bed shear and then braked to a standstill with known braking means in or from the run-up trough; the partial lengths of the bars or profiles are then raised to the rhythm of the downstream cooling bed, which is usually designed as a computing cooling bed, or they slide in a known manner onto the first catch of the cooling bed.
  • the partial lengths remain there with long or increased cooling until they have reached a temperature of approx. 100 to 250 ° C.
  • the rolling stock In order to prevent or reduce or avoid the formation of cracks or the costly afterglow, attempts were made to transport the rolling stock transversely faster by operating a conventional cooling bed more quickly. In order to achieve a less rapid cooling and a correspondingly higher final temperature for the rolling stock, the rolling stock is cross-conveyed with larger or faster transport steps, which can be achieved by optionally incrementable cycle steps or additional fast transport chains integrated or built into the cooling bed.
  • a transition device arranged between the rake cooling bed and the downstream discharge or discharge roller table for loading a cooling bed shear with successive bars or bar groups of different numbers and dimensions consists of a plurality of continuous, rake teeth having the bars or the bar groups and taking over and releasing them -Chain conveyors that have speed-changeable and / or step-switchable drives.
  • a lifting table which is movable in and against their transport direction and between the rollers of the roller table is provided.
  • the invention is therefore based on the object of providing a method and a device of the type mentioned at the outset which, on the one hand, make it possible to use the material flow behind a finishing or rolling mill and, on the other hand, material qualities that are prone to cracking and cooling faster than those via the cooling bed to remove the guided rods.
  • bar lengths which are cut off much more normally than usual can only be braked in good time before the cooling bed required for the normal rolling program. They can thus be completely independent of the actual cooling bed on an upstream, namely next to the existing one Transfer the arranged cross conveyor to the feed trough and transport it as quickly as possible to the connected roller table, which helps to ensure the desired high temperature level when it is stored in the insulated warming containers, the partial lengths having previously been cut into commercial lengths of, for example, 6 or 8 m, preferably with a cut-off machine used for high-quality steel. Since the cut-off machine is supplied with very short partial lengths, the slicing cuts for producing the commercial lengths can be reduced at the same time, which also contributes to the desired high temperature of the rods placed in the insulated warming containers for slow cooling.
  • the bar lengths which are significantly shorter than in normal operation, enable a correspondingly faster division both before entering the run-off channel and after cross-conveying when separating the commercial lengths on the roller table, and also that the short bar lengths according to the invention have significantly shorter running times a larger layer width, which can also be achieved close to each other in a heat-efficient manner.
  • various measures that ensure a higher temperature level can be linked with one another and the advantages resulting from the individual measures can be exploited to maintain the desired high residual temperature despite the indispensable process steps such as parts, braking, cross-conveying, conveying and lowering in commercial lengths, to enable the high-quality special and stainless steels to cool down gently.
  • a cross conveyor designed as a warm bed which can advantageously consist of endless chains or alternatively of trolleys, is arranged next to the run-on channel.
  • a warm bed which precedes the cooling bed is, without having to increase the overall length of the system, understood that this is not subject to the usual ventilation in a cooling bed, but rather can be in a closed, encapsulated construction.
  • This design helps to achieve the desired high residual temperature of the bars when the bars are being transported quickly across them.
  • temperature losses cannot be avoided for this reason alone because of the ventilation that is inevitable there and is also required for the normal rolling program.
  • a collecting slide be arranged between the run-on trough and the cross conveyor, on which the close-lying bar layers are formed before they are transferred to the cross conveyor.
  • other devices comparable to the rod lengths to form rod packages or layers can be used.
  • a rolling mill 1 is followed by an overrun roller table 2 with parting shears 3 integrated therein for dividing the rolling strand into partial lengths, which during normal rolling operation depend on the length dimensions of a downstream cooling bed 4 designed as a computing cooling bed and on the cooling bed cycle dependent permissible minimum or maximum dimensions of the partial lengths.
  • the partial lengths of the hot-rolled bars separated by the scissors 3 are braked before they are transported transversely to the roller table 5 connected to the cooling bed 4.
  • the cooling bed 4 is preceded by a warm bed 13 which has a cross conveyor 11 in the form of endless chains 12 between the run-up roller table 2 and the run-off roller table 5.
  • the endless chains 12 can be driven at a high transport speed, and they take over the transverse transport of the part lengths separated from the shear 3 in this case significantly shorter than normal, when rolling high-quality, alloyed steel qualities.
  • the short partial lengths are braked before reaching the cooling bed 4, combined there in a stacking chute 14 to form stack layers and then conveyed in layers or packages for delivery to the roller table 5.
  • the warm bed 13 is integrated into the material flow without increasing the overall length of the plant, because it is located next to the run-down channel 6 which is required anyway in normal operation for feeding the cooling bed 4 and brakes the bar lengths.
  • the sum of the speed-dependent braking distance and the short bar length during rolling high-quality, alloyed steel grades can then be equated to the braking distance required in normal operation with correspondingly much longer partial lengths for maximum rolling speeds.
  • the short rod lengths mean short run times, and their layer-by-layer collection with close-lying rods ensures a heat storage effect.
  • the rod groups can then be transported quickly via the im without any harmful temperature losses transversely convey essential warm bed 13 not subject to ventilation influences.
  • the short rod lengths then run into a cut-off machine 15 via the roller table 5, where, owing to their short dimensions, they can be divided into the desired commercial lengths with only a few slicing cuts and thus without unnecessary cooling times, before they are then stored in the insulated holding containers 16 provided .
EP94109154A 1993-06-23 1994-06-15 Procédé et dispositif pour le refroidissement soigné de barres d'acier spécial ou inoxydable laminées à chaud Expired - Lifetime EP0630696B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4320736A DE4320736A1 (de) 1993-06-23 1993-06-23 Verfahren und Vorrichtung zum schonenden Abkühlen von zu Stäben warmgewalzten Spezial- und Edelstählen
DE4320736 1993-06-23

Publications (2)

Publication Number Publication Date
EP0630696A1 true EP0630696A1 (fr) 1994-12-28
EP0630696B1 EP0630696B1 (fr) 1997-09-10

Family

ID=6490960

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94109154A Expired - Lifetime EP0630696B1 (fr) 1993-06-23 1994-06-15 Procédé et dispositif pour le refroidissement soigné de barres d'acier spécial ou inoxydable laminées à chaud

Country Status (6)

Country Link
EP (1) EP0630696B1 (fr)
JP (1) JPH0780533A (fr)
KR (1) KR100190343B1 (fr)
AT (1) ATE157913T1 (fr)
DE (2) DE4320736A1 (fr)
TW (1) TW267956B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0685274A1 (fr) * 1994-05-31 1995-12-06 Sms Schloemann-Siemag Aktiengesellschaft Procédé et dispositif pour le tronçonnage et le refroidissement contrôlé de barres individuelles à partir d'un profilé laminé
CN109454116A (zh) * 2018-11-06 2019-03-12 陕钢集团汉中钢铁有限责任公司 一种冷床输入辊道速度的控制方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112246866B (zh) * 2020-09-16 2022-12-09 上海新联金属新材料有限公司 一种下肖型钢热轧生产线及该生产线的生产方法
CN114309093B (zh) * 2021-12-30 2023-07-25 重庆钢铁股份有限公司 板材上下冷床的方法、板材编码方法及板材编码辅助装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1962586A (en) * 1932-04-08 1934-06-12 Schloemann Ag Rolling mill
DE2120279A1 (de) * 1970-08-26 1972-03-02 Thaelmann Schwermaschbau Veb Verfahren und Einrichtung zum wechselseitigen Übergeben von Walz stäben, insbesondere bei Edelstahlen
US4068516A (en) * 1976-11-18 1978-01-17 Firma Friedrich Kocks Method and apparatus for handling bar-shaped material
JPS63123515A (ja) * 1986-11-13 1988-05-27 Kobe Steel Ltd 圧延材の精整装置
DD268178A1 (de) * 1988-01-07 1989-05-24 Thaelmann Schwermaschbau Veb Anlage zum adjustieren von sehr harten staehlen und sonderwerkstoffen
DE3818242A1 (de) * 1988-05-28 1989-12-07 Schloemann Siemag Ag Uebergabeeinrichtung zwischen einem rechenkuehlbett und nachgeordnetem abfuehrrollgang

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1962586A (en) * 1932-04-08 1934-06-12 Schloemann Ag Rolling mill
DE2120279A1 (de) * 1970-08-26 1972-03-02 Thaelmann Schwermaschbau Veb Verfahren und Einrichtung zum wechselseitigen Übergeben von Walz stäben, insbesondere bei Edelstahlen
US4068516A (en) * 1976-11-18 1978-01-17 Firma Friedrich Kocks Method and apparatus for handling bar-shaped material
JPS63123515A (ja) * 1986-11-13 1988-05-27 Kobe Steel Ltd 圧延材の精整装置
DD268178A1 (de) * 1988-01-07 1989-05-24 Thaelmann Schwermaschbau Veb Anlage zum adjustieren von sehr harten staehlen und sonderwerkstoffen
DE3818242A1 (de) * 1988-05-28 1989-12-07 Schloemann Siemag Ag Uebergabeeinrichtung zwischen einem rechenkuehlbett und nachgeordnetem abfuehrrollgang

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 12, no. 371 (M - 748) 5 October 1988 (1988-10-05) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0685274A1 (fr) * 1994-05-31 1995-12-06 Sms Schloemann-Siemag Aktiengesellschaft Procédé et dispositif pour le tronçonnage et le refroidissement contrôlé de barres individuelles à partir d'un profilé laminé
CN109454116A (zh) * 2018-11-06 2019-03-12 陕钢集团汉中钢铁有限责任公司 一种冷床输入辊道速度的控制方法

Also Published As

Publication number Publication date
DE59404004D1 (de) 1997-10-16
KR950000234A (ko) 1995-01-03
EP0630696B1 (fr) 1997-09-10
KR100190343B1 (ko) 1999-06-01
ATE157913T1 (de) 1997-09-15
TW267956B (fr) 1996-01-11
DE4320736A1 (de) 1995-01-05
JPH0780533A (ja) 1995-03-28

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