DE2108314A1 - Rapid cooling rolled rod - of structural steel by a controlled - water quench method - Google Patents

Rapid cooling rolled rod - of structural steel by a controlled - water quench method

Info

Publication number
DE2108314A1
DE2108314A1 DE19712108314 DE2108314A DE2108314A1 DE 2108314 A1 DE2108314 A1 DE 2108314A1 DE 19712108314 DE19712108314 DE 19712108314 DE 2108314 A DE2108314 A DE 2108314A DE 2108314 A1 DE2108314 A1 DE 2108314A1
Authority
DE
Germany
Prior art keywords
cooling
rolling
rolling stock
structural steel
accelerated
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.)
Pending
Application number
DE19712108314
Other languages
German (de)
Inventor
Gerhard Dr.-Ing.; Wyzgol Ewald Dipl.-Ing.; χ 3000 Magdeburg Pechau
Original Assignee
VEB Schwermaschinenbau-Kombinat Ernst Thallmann Magdeburg, χ 3011 Magdeburg
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 VEB Schwermaschinenbau-Kombinat Ernst Thallmann Magdeburg, χ 3011 Magdeburg filed Critical VEB Schwermaschinenbau-Kombinat Ernst Thallmann Magdeburg, χ 3011 Magdeburg
Publication of DE2108314A1 publication Critical patent/DE2108314A1/en
Pending legal-status Critical Current

Links

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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • C21D9/5732—Continuous furnaces for strip or wire with cooling of wires; of rods
    • 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
    • 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
    • B21B45/0224—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for wire, rods, rounds, bars
    • 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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Metal Rolling (AREA)

Abstract

Accelerated cooling of hot rolled rod of carbon steel made on alloy steel rolling streets comprises a first cooling stage immediately after leaving the last roll in an enclosed compartmented water cooling installation in which the material is cooled down to 150 degrees C, following which it is allowed in still air when the temp. between out- and inside evens out again and the required structure is allowed to develop, this being succeeded by a final cooling in which the steel is fully submerged in the cooling bed. Plants laid out for this yield reduced scale on final product have improved flexibility of operation, and permit faster throughput.

Description

Aufstellung der verwendeten Bezugszeichen:List of the reference symbols used:

1 Walzgerüst 2 Wasserkühlstrecke 3 Kühlbettschere 4 Rechenkühlbett 5 Wasservollbad 6 Feinstahlhaspel 7 Transport@ur1 roll stand 2 water cooling section 3 cooling bed shears 4 rake cooling bed 5 Full water bath 6 Fine steel reel 7 Transport @ ur

Claims (2)

P a t e n t a n s p r ü c h e :P a t e n t a n s p r ü c h e: 1. Verfahren und Anordnung zur beschleunigten Abkühlung von stabförmigem Walzgut als Massenbaustahl in Feinstahlstraßen unmittelbar aus der Walzhitze, d a d u r c h g e k e n n z e i c h n e t, daß austrittsseitig des letzten Walzgerüstes in Walzrichtung das Walzgut eine aus Segmenten bestehende geschlossene Wasserkühlstrecke (2) mit regelbarer Wasserzu-und -abfuhr durchläuft, wobei die Walzgut@berfläche auf ca. 150 °C abgekühlt wird und d@nach ein Ausgleich der Temperaturdifferenz zwischen Walzgutoberfläche und kern unter gleichzeitiger weiterer Abkühlung an ruhender Lust @@lange stattfin@et, bis die gewünschte Gefügeausbildung über dem Walzgutquerschnitt abgeschlossen ist und anschlie@end durch erneute Eintauchung in Wasservollbäder (5) der Abkühlvorgang beschleunigt zu @nde geführt wird.1. Method and arrangement for accelerated cooling of rod-shaped Rolled material as mass structural steel in fine steel mills directly from the rolling heat, d a d u r c h g e k e n n n z e i c h n e t that the exit side of the last roll stand in the rolling direction, the rolling stock is a closed water cooling section consisting of segments (2) with controllable water supply and drainage, the rolling stock @ surface is cooled to approx. 150 ° C and d @ after a compensation of the temperature difference between Rolled stock surface and core with simultaneous further cooling in dormant pleasure @@ a long time instead of fin @ et until the desired structure formation over the rolling stock cross-section is completed and then by re-immersion in full water baths (5) the cooling process is accelerated to the end. 2. Verfa@ren nach Anspruch 1, d a d u r c h g e k e n n z e i c h n a t, daß währ@nd des Walzgutdurch@l@@es d@ch @@@@@@ strecke (2) @ur Regelung der Ab@ü@lwi@@ng @@@ @@@ Abkühlverlaufes die Wasserzu- und -@bfuhr in Tei@@-absch@itten der Kühlstrecke regelbar ist. 2. Verfa @ ren according to claim 1, d a d u r c h g e k e n n z e i c h n a t that during the rolling stock by @ l @@ es d @ ch @@@@@@ route (2) @ur regulation of the From @ ü @ lwi @@ ng @@@ @@@ cool down the water supply and - @ bfuhr in Tei @@ - cut off the cooling section is adjustable. 30 Anordnung zur Durchführung des Verfahrens, dadurch gekennzeichnet, daß die Wasserkühlstrecke (2) aus einzelnen Segiflen£en besteht und ihr nachfolgend eine Kühlbettschere (3) oder eine Feinstahlhaspel (6) nachgeordnet sind.30 arrangement for carrying out the method, characterized in that that the water cooling section (2) consists of individual Segiflen £ en and her following a cooling bed shear (3) or a fine steel reel (6) are arranged downstream.
DE19712108314 1970-08-05 1971-02-22 Rapid cooling rolled rod - of structural steel by a controlled - water quench method Pending DE2108314A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD14930970 1970-08-05

Publications (1)

Publication Number Publication Date
DE2108314A1 true DE2108314A1 (en) 1972-02-10

Family

ID=5482816

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19712108314 Pending DE2108314A1 (en) 1970-08-05 1971-02-22 Rapid cooling rolled rod - of structural steel by a controlled - water quench method

Country Status (1)

Country Link
DE (1) DE2108314A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2353034A1 (en) * 1972-10-31 1974-05-09 Centre Rech Metallurgique Rolled products - eg concrete reinforcing bars, with a high elastic limit and low carbon and manganese content
DE2439784A1 (en) * 1973-09-24 1975-04-03 Qualitaets Und Edelstahl Kom V Concrete reinforcing rods - are quenched after hot rolling and profiling
FR2296477A1 (en) * 1975-01-03 1976-07-30 Centre Rech Metallurgique PLANT FOR PROCESSING LAMINATED STEEL PRODUCTS
DE2602656A1 (en) * 1975-01-29 1976-08-05 Centre Rech Metallurgique Cooling rolled steel - to remove heat at the most efficient rate
EP0305914A2 (en) * 1987-09-01 1989-03-08 Stahlwerk Annahütte Max Aicher Gmbh & Co. Kg. Process for the treatment of rolled steel for increasing corrosion resistance

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2353034A1 (en) * 1972-10-31 1974-05-09 Centre Rech Metallurgique Rolled products - eg concrete reinforcing bars, with a high elastic limit and low carbon and manganese content
DE2439784A1 (en) * 1973-09-24 1975-04-03 Qualitaets Und Edelstahl Kom V Concrete reinforcing rods - are quenched after hot rolling and profiling
FR2296477A1 (en) * 1975-01-03 1976-07-30 Centre Rech Metallurgique PLANT FOR PROCESSING LAMINATED STEEL PRODUCTS
DE2602656A1 (en) * 1975-01-29 1976-08-05 Centre Rech Metallurgique Cooling rolled steel - to remove heat at the most efficient rate
EP0305914A2 (en) * 1987-09-01 1989-03-08 Stahlwerk Annahütte Max Aicher Gmbh & Co. Kg. Process for the treatment of rolled steel for increasing corrosion resistance
EP0305914A3 (en) * 1987-09-01 1989-08-09 Stahlwerk Annahutte Max Aicher Gmbh & Co. Kg. Process for the treatment of rolled steel for increasing corrosion resistance

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