DE3626741A1 - Cooling unit and method for cooling warm rolling, with / without direct patenting, in pressure cooling water - Google Patents

Cooling unit and method for cooling warm rolling, with / without direct patenting, in pressure cooling water

Info

Publication number
DE3626741A1
DE3626741A1 DE19863626741 DE3626741A DE3626741A1 DE 3626741 A1 DE3626741 A1 DE 3626741A1 DE 19863626741 DE19863626741 DE 19863626741 DE 3626741 A DE3626741 A DE 3626741A DE 3626741 A1 DE3626741 A1 DE 3626741A1
Authority
DE
Germany
Prior art keywords
cooling
cooling unit
water
rolling stock
characterized
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.)
Withdrawn
Application number
DE19863626741
Other languages
German (de)
Inventor
Walter Dipl Ing Krenn
Original Assignee
Krenn Walter
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 Krenn Walter filed Critical Krenn Walter
Priority to DE19863626741 priority Critical patent/DE3626741A1/en
Priority claimed from DE19873787612 external-priority patent/DE3787612D1/en
Publication of DE3626741A1 publication Critical patent/DE3626741A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B45/00Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02Devices 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
    • B21B45/0203Cooling
    • B21B45/0209Cooling devices, e.g. using gaseous coolants
    • B21B45/0215Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0218Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B45/00Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02Devices 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
    • B21B45/0203Cooling
    • B21B45/0209Cooling devices, e.g. using gaseous coolants
    • B21B45/0215Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0224Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for wire, rods, rounds, bars
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B21B1/18Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/26Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill

Description

The invention relates to a cooling unit and a method for cooling warm rolling stock, with / without direct patenting, for the pressure cooling water and steam is pressed onto the hot rolled surface of the rolling stock.

When cooling hot rolled rolling stock, with / without direct patenting, is a Unit and process required that on the one hand reaching the ge desired cooling temperature with little use of the means and on the other hand, an unwanted overcooling of the edge zone of the rolling stock, the can lead to the formation of undesirable structural components in the finished rolling stock, avoids.

It is known that in the manufacture of hot wide strip, steel bars up towards that of wire rod, the hot rolled rolling stock for the most part in Water is cooled in one or at intervals, partly in water and then in blown air or in air alone.

In hot wide strip rolling mills, 8,000 m 3 / h and more cooling water are used in the laminar cooling of the hot rolling strip, on the other hand wire rod with 5.5 mm diameter is used from 1000 ° C to 650 ° C on a wire rolling mill with 240 m 3 / h and the other with 70 m 3 / h cooling water cooled. These widely differing amounts of cooling water show that in the conventional cooling units a very different amount of heat is extracted from the rolling stock per m 3 of cooling water.

All cooling is hot rolled rolling stock with water, with low rolling good thickness (rolling stock diameter), common that with the increasing rolling speeds and the increasing amounts of cooling water or increasingly higher heat transfer values in the cooling units The risk of undesirable overcooling of the peripheral zones increases. To this Ge To avoid driving you avoid it, e.g. B. in hot broadband as well Wire rod, with cooling in water to drive cooling temperatures at which during or after cooling the peripheral zone temperature too close to the im  quality-related ZTU-diagram is shown. In the production of hot strip, besides the metallurgical consequences, the result is an increasingly long drain cooling roller table, its length limit reached, a higher reel temperature. In the manufacture of wire rod, today mainly fanned out primarily with water and secondarily with blown air and cooled in air, the result is that the wire rod fanned out with temperatures above the transition point and on the Air cooling belt must be put down so that the structural differences in each Swirl (handling), which inevitably have to change four times since the part pieces of each turn that lie on the outside of the air cooling belt lie on top of each other lie and therefore cool down much more slowly than those exposed in Cool the area around the center of the air cooling belt quickly, increase even further.

The invention has for its object the cooling hot rolling roll guts, from hot wide strip to wire rod, with / without direct patenting, in To be able to carry out pressure cooling water so that during and after the cooling carried out in this way, no detectable undesirable quality dependent, cooling-related structural components form in the finished rolling stock can.

The object is achieved in that the cooling unit primarily from the pressure chamber of the evaporative cooling part for cooling the Warm rolling stock with the one essentially intended for evaporation Pressure cooling water exists, secondary from the pressure chamber of the steam cooling section for the cooling of the hot rolled rolling stock with that in the evaporative cooling section forming steam-water mixture and that the cooling unit preferably only with the amount of pressurized cooling water that is necessary so that with the Cooling through the predominant evaporation of the pressure cooling water in the ver steam cooling section, together with the cooling in the steam cooling section with the Evaporative cooling section generated steam-water mixture, the desired cooling temperature of the rolling stock is reached while cooling, with / without Direct patenting, with water and steam so that the Edge zone of the finished rolling stock, during and after the cooling thus carried out, no detectable undesirable quality-dependent cooling-related Can form structural components.

The amount of heat to be dissipated from a quantity of hot rolled stock becomes In terms of the process, a quantity of pressure in equilibrium is cooled cooling water supplied for evaporation. This supplied amount of pressurized cooling water  is dimensioned in such a way that, analogously to the pre-pressure and rolling speed, hot rolled material can only withdraw so much heat in the unit of time that it the cooling temperature of the peripheral zone is selectable or that depends on quality cannot fall below the permissible lower temperature value in an uncontrolled manner. The procedural accuracy of cooling with water is approaching thus, for example, the cooling of wire rod in liquid lead.

Further training of the cooling unit and activities in the process are

  • - That the volume of the pressure chamber of the evaporative cooling part is dimensioned so that with the rolling stock passing, the remaining volume part is sufficient is that determined for cooling the intended amount of rolled stock Amount of pressurized cooling water coming from the pressurized cooling water line, above the pressure cooling water valve, the pressure cooling water flow control valve and through the Inflow openings and essentially cooling the rolling stock therein evaporates,
  • - That the accumulation edges between the pressure chamber of the evaporation part and the Pressure chamber of the steam cooling room are dimensioned so that when the roll passes well the remaining flow cross-section is sufficient that the Ver amount of steam-water mixture forming in the steam cooler flows in and cools the rolling stock,
  • - that the flow cross-section in the accumulation edge at the rolling material inlet and outlet, based on the remaining flow cross-section when the roll passes well, equal in size from the surface of the rolled stock to the storage edge or 10 to 30% greater or less than the same level as that of the lead flow cross-sections in the accumulation edges within the cooling unit, what is achieved that the cooling intensity of the cooling unit the necessary of the different quality groups of the hot rolled rolling stock fits,
  • - That the cooling unit body divided into a lower part and an upper part is and the two parts laterally preferably a labyrinth seal have arranged and the upper part is variable and non-positively guided,
  • - That the cooling unit body is undivided,
  • - That in the evaporative cooling section and / or in the steam cooling section turbulence enhancer and / or flow indicators are arranged,
  • - That the evaporative cooling part preferably between two steam cooling parts is arranged, have the same or different length,
  • - That the pressure cooling water valve and the pressure cooling water inflow control valve are combined in one,  
  • - That the regulation of the cooling intensity during the passage of the rolling stock with the pressure cooling water inflow control valve, by changing the pressure amount of cooling water,
  • - that the regulation of the cooling intensity during the passage of the rolling stock, with divided cooling unit bodies, also via variable variable non-positive The upper part is guided,
  • - That when changing the rolling stock width in the evaporative cooling part, if necessary also in the steam cooling section, storage edges that can be variably fixed on the sides are arranged
  • - That with a divided cooling unit body, the cooling unit, from its open Condition of the collapse of the upper part on the lower part and the activated cooling water, continuously from the open spray cooling water cooling can be carried out for closed pressure cooling water cooling,
  • - That the pressure cooling water fine sands, e.g. B. greasy, are added,
  • - That the pressure cooling water chemically active additives, for. B. for support a certain scale formation, for neutralization, is added,
  • - That two to avoid air ingress while cooling in water or more cooling units are connected to a connector,
  • - That the cooling unit is connected to a condensation box itself has or is lying in one that is equipped with showers and may Steam / water retention on the rolling stock inlet and outlet side element arranged carries and has drain openings, and
  • - That the cooling unit with its firmly attached condensation box in front is preferably arranged twice and in parallel, alternately one or the other cooling unit, thanks to simple mechanics, in the shortest possible time is moved out and into the rolling line.

The advantages achieved with the new cooling unit and process exist especially in it

  • - That the rolled rolling stock is cooled with pressurized cooling water that during and after cooling, with / without direct patenting, on the edge Zone of the finished rolling stock no detectable undesirable quality can form structural components due to cooling,
  • - That the structurally secured cooling of hot rolled rolling stock in production the direct patenting with water flows in the majority of the rolling stock qualities, with the rest of this to a large extent even before the subsequent direct patenting in blower air,  
  • - That it is possible with the addition of suitable substances to the pressure cooling water is the surface of the rolling stock physically or when it cools down to be treated chemically,
  • - that the cooling unit is set such that a conventional set cooling units and methods for cooling, patenting with / without direct, less than 1 / used 3 to 1/10 at pressure cooling water gegenüer the.

Two embodiments of the cooling unit and method according to the invention are shown schematically in the drawing and are described in more detail below described.

Fig. 1 and Fig. 2 show an embodiment of a cooling unit for cooling wide flat rolled stock, for. B. hot wide strip.

The cooling unit consists primarily of the pressure chamber of the evaporative cooling part ( 1 ) with the accumulation edges ( 7 ) and ( 8 ) in which the pressure cooling water essentially evaporates and secondarily from the pressure space of the steam cooling part ( 2 ) with the accumulation edges ( 9 ) and ( 10 ) in which cools the rolling stock with the steam-water mixture generated in the evaporative cooling section ( 1 ).

The pressure cooling water flows out of the pressure cooling water line ( 3 ), via the moderately adjusted pressure cooling water valve ( 4 ) with approx. 80% and over the pressure of the cooling water inflow control valve ( 5 ) with approx. 20%, through the inflow openings ( 6 ) into the pressure chamber of the evaporative cooling section ( 1 ), essentially cools and evaporates, the steam-water mixture generated flows via the accumulation edges ( 7 ) and ( 8 ) into the pressure chamber of the steam cooling section ( 2 ), cools and leaves it through the storage edges ( 9 ) and ( 10 ). The accumulation edges ( 7 ) ( 8 ) and ( 9 ) ( 10 ) are arranged to leave the pressure cooling water leaving the vaporization part ( 1 ) and the steam-water mixture that of the steam cooling part 2 so as to make it more difficult in each of the two pressure spaces ( 1 ) ( 2 ) To make the best possible use of the physical possibility of heat extraction from the hot rolled material by changing the physical state of the pressure cooling water. The invention takes advantage of the fact that when a liter of water is heated from 15 ° C to 100 ° C a warm surface 85 kcal ent, when converting water at 100 ° C to steam at 100 ° C but 539 kcal . All splash water cooling works with low heat extraction, hence the large amounts of cooling water.

The steam part of the steam-water mixture flowing out through the accumulation edges ( 9 ) and ( 10 ) is sprayed with showers ( 20 ) on the underside between the roller table rollers for wide flat rolled material ( 20 ) and on the top by means of the steam-water mixture retaining elements ( 21 ) in the form of a movable flap in the condensation box ( 19 ) in the upper part ( 12 ) and showered there with showers ( 20 ). Water and condensate flow out through the opening ( 22 ).

Fig. 3 and Fig. 4 show an embodiment of a cooling unit for cooling profile steel, z. B. steel bars and wire rod.

The cooling unit for this consists in the main parts of the same parts as described for the cooling unit for wide flat rolled stock. However, the cooling unit body is in one piece ( 14 ), so that the steam-water mixture emerging from the accumulation edges ( 9 ) and ( 10 ) flows directly into the condensation box ( 19 ). In Fig. 4, a connecting piece ( 18 ) is shown, with which two or more cooling units can be connected so that no air can reach the surface of the rolling stock during cooling in water.

The mathematical determination of the exact amount of pressurized cooling water for cooling the various rolling stock qualities and dimensions to the different cooling temperatures is not easy because of the large number of factors to be taken into account, it is more practical to apply the pressure cooling water to the individual cooling temperatures through measurement runs determine. The new cooling system and method requires only a comparatively small amount of compressed cooling water itself (less than 1 / 3W to 1 / 10th that of conventionally), flow of which is preferably as base load about 80% higher than the pressure of cooling water valve (4) and during the Walzgutabkühlung only the remaining 20%, which flow in via the pressure cooling water inflow control valve ( 5 ), are regulated, which made it possible that the quantity of pressure cooling water to be used can only extract the amount of hot rolled rolling stock in the time unit from the heat quantity declared as permissible and the cooling temperature with minimum bandwidth can be driven.

Claims (20)

1. Cooling unit and method for cooling hot rolled rolling stock, with / without direct patenting, in which pressure cooling water and steam is pressed onto the hot rolling surface of the rolling stock, characterized in that the cooling unit primarily from the pressure chamber of the evaporative cooling part ( 1 ) for cooling the hot rolled rolling stock with the Pressurized cooling water essentially provided for evaporation consists, secondarily, of the pressure chamber of the steam cooling part ( 2 ) for cooling the hot rolled rolling stock with the steam-water mixture forming in the evaporation cooling part ( 1 ) and that the cooling unit is preferably only charged with the quantity of pressurized cooling water which is necessary so that with the cooling by the predominant evaporation of the pressurized cooling water in the evaporative cooling part ( 1 ), together with the cooling in the steam cooling part ( 2 ) with the steam-water mixture generated in the evaporative cooling part ( 1 ), the desired cooling temperature of the rolling stock is reached while cooling, with / without Direct patenting, with water and steam is carried out in such a way that no verifiable undesirable quality-dependent structural components can form at the edge zone of the finished rolling stock during and after the cooling process carried out in this way.
2. Cooling unit and method according to claim 1, characterized in that the volume of the evaporative cooling part ( 1 ) is dimensioned such that the remaining volume part is sufficient when the rolling stock passes through that the amount of pressure cooling water determined for cooling the intended amount of rolling stock from the Pressurized cooling water line ( 3 ), via the pressurized cooling water valve ( 4 ), the pressurized cooling water inflow control valve ( 5 ) and through the inflow openings ( 6 ) and essentially evaporates the rolling stock from cooling.
3. Cooling unit and method according to claim 1 and 2, characterized in that the accumulation edges between the pressure chamber of the evaporative cooling part ( 1 ) and the steam cooling part ( 2 ) are dimensioned such that the remaining flow cross-section is sufficient that the flow cross section is sufficient that the Ver dampfungskühlteil (1) which forms steam-water mixture amount flowing into the steam cooling section (2) and therein cooling the rolling stock.
4. Cooling unit and method according to claim 1 to 3, characterized in that the flow cross-section in the accumulation edge at the rolling stock step ( 9 ) and outlet ( 10 ), based on the remaining flow cross-section when rolling stock, in its extent from the rolling stock surface to the accumulation edge ( 9 ) and ( 10 ) is equal to or 10 to 30% greater or less than the same dimension as that of the remaining flow cross-sections in the baffles ( 7 ) and ( 8 ) within the cooling unit, with the result that the cooling intensity of the cooling unit meets the needs of is adjusted under different quality groups and cooling temperatures of the warm rolling mill.
5. Cooling unit and method according to claim 1 to 4, characterized in that the cooling unit body is divided into a lower part ( 11 ) and an upper part ( 12 ) and both parts preferably have a labyrinth seal ( 13 ) arranged laterally and the upper part ( 12 ) distance variable and conclusively guided.
6. Cooling unit and method according to claim 1 to 5, characterized in that the cooling unit body is undivided ( 14 ).
7. Cooling unit and method according to claim 1 to 6, characterized in that in the evaporative cooling part ( 1 ) and / or in the steam cooling part ( 2 ) turbulence increase ( 15 ) and / or flow indicators ( 16 ) are arranged.
8. Cooling unit and method according to claim 1 to 7, characterized in that the evaporative cooling part ( 1 ) is preferably arranged between two steam cooling parts ( 2 ), have the same or different length.
9. Cooling unit and method according to claim 1 to 8, characterized in that the evaporative cooling part ( 1 ) is arranged after or before the steam cooling part ( 2 ).
10. Cooling unit and method according to claim 1 to 9, characterized in that the pressure cooling water valve ( 4 ) and the pressure cooling water inflow control valve ( 5 ) is combined in one ( 5 ).
11. Cooling unit and method according to claim 1 to 10, characterized in that the regulation of the cooling intensity during the passage of the rolling stock with the pressure cooling water inflow control valve ( 5 ), by changing the amount of pressure cooling water.
12. Cooling unit and method according to claim 1 to 11, characterized in that the regulation of the cooling intensity during the passage of the rolling stock, with divided cooling unit body ( 11 ) ( 12 ), also via a variable variable non-positive guidance of the upper part ( 12 ).
13. Cooling unit and method according to claim 1 to 12, characterized in that when changing the rolling stock width in the evaporative cooling part ( 1 ), optionally also in the steam cooling part ( 2 ), laterally variably fixable storage edges ( 17 ) are arranged on the two sides.
14. Cooling unit and method according to claim 1 to 13, characterized in that when the cooling unit body ( 11 ) ( 12 ), the cooling unit, from its open state, over the moving together of the upper part ( 12 ) on the lower part ( 11 ) and this pressure cooling water, stepless from the open spray cooling water cooling to the closed pressure cooling water cooling is feasible.
15. Cooling unit and method according to claim 1 to 14, characterized in that the pressure cooling water fine sands, e.g. B. greasy, are added.
16. Cooling unit and method according to claim 1 to 15, characterized in that the pressure cooling water chemical additives, e.g. B. to support one certain scale formation, for neutralization, are added.
17. Cooling unit and method according to claim 1 to 16, characterized in that air is added to the pressure cooling water.
18. Cooling unit and method according to claim 1 to 16, characterized in that, in order to avoid the entry of air during cooling in water, two or more cooling units are each connected to a connecting piece ( 18 ).
19. Cooling unit and method according to claim 1 to 18, characterized in that the cooling unit is connected to a condensation box, itself has one ( 19 ) or in one ( 19 ), which is equipped with showers (2 =) and possibly on the rolling stock inlet and outlet sides each have a steam-water retention element ( 21 ) arranged and have outlet openings ( 22 ).
20. Cooling unit and method according to claim 1 to 19, characterized in that the cooling unit with its permanently connected condensation box is preferably arranged twice and in parallel, alternately one or the other cooling unit, through simple mechanics; coming soon out of time and into the rolling line.
DE19863626741 1986-08-07 1986-08-07 Cooling unit and method for cooling warm rolling, with / without direct patenting, in pressure cooling water Withdrawn DE3626741A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19863626741 DE3626741A1 (en) 1986-08-07 1986-08-07 Cooling unit and method for cooling warm rolling, with / without direct patenting, in pressure cooling water

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19863626741 DE3626741A1 (en) 1986-08-07 1986-08-07 Cooling unit and method for cooling warm rolling, with / without direct patenting, in pressure cooling water
AT192987A AT390273B (en) 1986-08-07 1987-07-30 Cooling unit and method for cooling warm rolling goods
DE19873787612 DE3787612D1 (en) 1986-08-07 1987-08-07 Cooling unit and method for cooling warm rolling goods, with / without direct patenting, in pressure water.
ES87710010T ES2046213T3 (en) 1986-08-07 1987-08-07 Cooling equipment and process for cooling hot lamination products, with / without direct patenting, in pressurized water.
EP19870710010 EP0266302B1 (en) 1986-08-07 1987-08-07 Cooling aggregate and method for cooling hotrolled rolling stock with/without direct patenting in presswater

Publications (1)

Publication Number Publication Date
DE3626741A1 true DE3626741A1 (en) 1988-02-18

Family

ID=6306869

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19863626741 Withdrawn DE3626741A1 (en) 1986-08-07 1986-08-07 Cooling unit and method for cooling warm rolling, with / without direct patenting, in pressure cooling water

Country Status (4)

Country Link
EP (1) EP0266302B1 (en)
AT (1) AT390273B (en)
DE (1) DE3626741A1 (en)
ES (1) ES2046213T3 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0287503A2 (en) * 1987-03-13 1988-10-19 Walter Dipl.-Ing. Krenn Method of and pressure cooling apparatus for cooling a continuous product
DE4009228A1 (en) * 1990-03-22 1991-09-26 Krenn Walter Differential cooling system for profiled metal prods. e.g. rails - has controlled flows of pressurised water, some mixed with air, directed at different parts of prod.
DE4201295A1 (en) * 1992-01-15 1993-07-22 Thaelmann Schwermaschbau Veb Device for guiding and cooling rolled material in wire rolling blocks - uses pressure water feed arranged on guide by flanges, water quantity is adjusted by diaphragm in feed nozzle
DE19718530A1 (en) * 1997-05-02 1998-11-12 Schloemann Siemag Ag Process and cooling unit for cooling hot rolled rolling stock, in particular hot wide strip
EP0998993A2 (en) * 1998-11-04 2000-05-10 Sms Schloemann-Siemag Aktiengesellschaft Method and device for cooling rolling stock at rolling-temperature, in particular hot wide strip

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104550275B (en) * 2014-12-26 2016-07-06 钢铁研究总院 A kind of spray vaporization chiller for hot-rolled high-strength reinforcing bar and method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1925416C3 (en) * 1968-03-12 1979-08-02 Walter 4330 Muelheim Krenn
DE3043117A1 (en) * 1968-03-12 1982-07-01 Walter Krenn Rolled prod. cooling line - comprising cooling pipes of cross=section similar to prod. cross=section
DE1608327C3 (en) * 1968-03-12 1973-10-31 Walter 4330 Muelheim Krenn
DD110774A1 (en) * 1974-04-10 1975-01-12
JPS5711930B2 (en) * 1976-08-31 1982-03-08

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0287503A2 (en) * 1987-03-13 1988-10-19 Walter Dipl.-Ing. Krenn Method of and pressure cooling apparatus for cooling a continuous product
EP0287503A3 (en) * 1987-03-13 1989-02-08 Korf Engineering Gmbh Method of and pressure cooling apparatus for cooling a continuous product
DE4009228A1 (en) * 1990-03-22 1991-09-26 Krenn Walter Differential cooling system for profiled metal prods. e.g. rails - has controlled flows of pressurised water, some mixed with air, directed at different parts of prod.
DE4201295A1 (en) * 1992-01-15 1993-07-22 Thaelmann Schwermaschbau Veb Device for guiding and cooling rolled material in wire rolling blocks - uses pressure water feed arranged on guide by flanges, water quantity is adjusted by diaphragm in feed nozzle
DE19718530A1 (en) * 1997-05-02 1998-11-12 Schloemann Siemag Ag Process and cooling unit for cooling hot rolled rolling stock, in particular hot wide strip
DE19718530B4 (en) * 1997-05-02 2005-02-03 Sms Demag Ag Process for cooling of rolling-cold rolling stock and apparatus for carrying out the method and use of the apparatus
EP0998993A2 (en) * 1998-11-04 2000-05-10 Sms Schloemann-Siemag Aktiengesellschaft Method and device for cooling rolling stock at rolling-temperature, in particular hot wide strip
EP0998993A3 (en) * 1998-11-04 2001-11-14 SMS Demag AG Method and device for cooling rolling stock at rolling-temperature, in particular hot wide strip

Also Published As

Publication number Publication date
AT390273B (en) 1990-04-10
EP0266302A1 (en) 1988-05-04
ES2046213T3 (en) 1994-02-01
ATA192987A (en) 1989-09-15
EP0266302B1 (en) 1993-09-29

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8141 Disposal/no request for examination