EP0492227B1 - Einrichtung zum Kühlen der Presswerkzeuge einer Stauchpresse und Verfahren zum Betreiben der Einrichtung - Google Patents

Einrichtung zum Kühlen der Presswerkzeuge einer Stauchpresse und Verfahren zum Betreiben der Einrichtung Download PDF

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Publication number
EP0492227B1
EP0492227B1 EP91121014A EP91121014A EP0492227B1 EP 0492227 B1 EP0492227 B1 EP 0492227B1 EP 91121014 A EP91121014 A EP 91121014A EP 91121014 A EP91121014 A EP 91121014A EP 0492227 B1 EP0492227 B1 EP 0492227B1
Authority
EP
European Patent Office
Prior art keywords
slab
press
coolant
cooling
press tool
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
EP91121014A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0492227A1 (de
Inventor
Gerhard Heitze
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 EP0492227A1 publication Critical patent/EP0492227A1/de
Application granted granted Critical
Publication of EP0492227B1 publication Critical patent/EP0492227B1/de
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
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • B21J1/04—Shaping in the rough solely by forging or pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0035—Forging or pressing devices as units
    • B21B15/005—Lubricating, cooling or heating means

Definitions

  • the invention relates to a device for cooling the pressing tools of an upsetting press for reducing the width of slabs in hot broadband roughing mills with both sides of the slab edge, the mutually facing pressing tools receiving and mutually movable tool carriers and a method for operating the cooling device.
  • the pressing tools of an upsetting press to reduce the width of slabs in hot wide strip roughing mills are exposed to extremely high mechanical and thermal loads. Since the temperature of the hot slab entering the upsetting press is approximately 1250 ° C and the pressing tool is exposed to direct thermal contact with the slab during the pressing and otherwise to the radiant heat emanating from the hot slab, the pressing tool must be cooled so that operationally acceptable tool life can be achieved will.
  • Japanese patent application JP-A-2192805 proposes, for cooling the pressing tools of an upsetting press, to let in oval-shaped cooling channels in that edge region of the pressing tool which faces the slab edge in order to optimize the cooling of the pressing tools in these areas.
  • the coolant supply consists of a distributor device, on which coolant nozzles aligned with the press edge of the press tool are arranged.
  • the distributor device and the coolant nozzles are arranged horizontally above and below the slab edge.
  • the same horizontal arrangement of the distributor device and the coolant nozzles has been proposed in Japanese Patent Laid-Open JP-A-63-132740 and JP-A-63-5837. Since the installation conditions in a compression press in the area of the pressing tools and the slab are sometimes very narrow, the external coolant supply of the previously known type is not always applicable.
  • the object of the invention is to design a device for cooling the pressing tools of an upsetting press using the tightest of spaces, with which the pressing tool is cooled down reliably and sustainably to those maximum permissible material temperatures at which conventional temperature change-resistant materials can be used, which require multiple reworking allow the highly stressed pressing surfaces of the tool. Inexpensive materials should also be able to be used for the pressing tool; at the same time, the service life of these tools should be increased.
  • the flat jet nozzles can be fixed in the nozzle bar, so that individual nozzles are assigned to certain working positions of the pressing tools in the upsetting press and are then switched off when the pressing tools are set to a new working position, for example because of a changed slab width; new, assigned nozzles are then switched on in accordance with the new working position of the pressing tools.
  • the adaptation of the nozzles to the various working positions of the pressing tools is thereby considerably simplified.
  • the ability to switch off or switch on entire rows of nozzles in the nozzle bar also allows the area of the front edge of each pressing tool to be acted upon from the outside and past the slab with a cooling medium in the form of spray cooling during the movement phase that is lifted from the slab edge.
  • the control of the nozzle valves is expediently coupled to the control of the pressing tools.
  • the coolant is largely kept away from the slab, in particular from the slab edge, so that the deformation energy introduced into the slab by the pressing tools is sufficient to compensate for the heat loss of the slab by heat radiation.
  • the nozzle bar can be connected as a structural unit by means of a quick-connect connection to at least one coolant supply line, this considerably streamlines the maintenance of the Nozzles reached. Damage to individual nozzles can be remedied at a separate maintenance station, since the damaged nozzle bar can be replaced with a new or repaired nozzle bar.
  • a further embodiment of the invention provides that in addition to the spray cooling of the pressing tool applied from the outside, this pressing tool is cooled internally.
  • the coolant channels in the pressing tool can be moved back so far from the front edge of the tool that multiple reworking of the pressing surfaces of the pressing tool is ensured.
  • FIG. 1 shows an upsetting press 1 with a press frame, consisting of two upper and two lower uprights 2, 3 and two crossbars 4, 5 connecting the uprights, the lower uprights 3 resting on a foundation 6.
  • the upsetting press also has two crankcases 7, in which an eccentric drive (not shown in more detail) for the translational movement of the tool carrier 8 and the pressing tool 9 is arranged.
  • the slab 10 to be compressed is located between the pressing tools 9 of the upsetting press 1.
  • the slab 10 is moved through the upsetting press on a roller table (not shown in more detail).
  • two hold-down rollers 11 In the area of the pressing tools 9, two hold-down rollers 11 (FIG. 2) are arranged above and below the slab.
  • the eccentric drive for tool carrier 8 and pressing tool 9 located in the crankcase 7 is driven by an articulated shaft 12 which is connected to a drive motor 14 via a gear 13.
  • the position of the crankcase 7 in the press frame and thus the position of the pressing tools with respect to the width of the slab is adjusted with the aid of the adjusting device 15.
  • the drive devices of the upsetting press namely drive motor 14, gear 13, cardan shaft 11 and eccentric drive in the crankcase 7, the tool carrier 8 and the pressing tool 9 are moved in the direction of arrow 16 against the edges of the slab in the horizontal direction, whereby the slab by prescribed dimensions in the width is reduced. Since the slab temperature is around 1250 ° C and the pressing tool acts on the slab edge during the pressing period, it is subjected to high mechanical and thermal stress.
  • the upsetting press with a plurality of coolant nozzle 18 directed against the regions of the front edge 17 of each pressing tool 9.
  • the coolant nozzles 18 are designed as flat jet nozzles with a predetermined scattering angle 19 and a plurality of flat jet nozzles 18, 18 ', 18'',18''' are combined to form a nozzle bar 20, which is arranged above and below the slab center 21.
  • FIG. 1 A special compression position for a slab is shown in FIG. 1, the axes of the flat jet nozzles 18 being directed above and below the slab 10 against the front edge 17 of the tool. If, in some cases, wider or narrower slabs are to be pressed in a reducing manner, the flat jet nozzles 18 in the nozzle bar 20 are switched off and, for example, the flat jet nozzles 18 ', the axes of which are now aligned with the new slab width, are switched on.
  • the nozzles of the nozzle bar are supplied from a container 22 with cooling medium, preferably water, which is supplied by means of a pump 23.
  • the connection and disconnection of the flat jet nozzles in the nozzle bar is carried out with the aid of switchable valves 24 which are arranged in the individual supply line 25 assigned to the respective flat jet nozzle.
  • Figure 2 shows the arrangement of the nozzle bar 20 above and below the slab 10 between the hold-down rollers 11.
  • the nozzle bar 20 can be seen as a unit with integrated flat jet nozzles in this unit, the nozzle bar being connected to the water supply lines 25 by means of quick-connect connections 26.
  • FIG. 3 and FIG. 4 show the nozzle bar 20 and the flat jet nozzles 18 arranged in the nozzle bar, according to which the nozzle bar is equipped in sections with a plurality of nozzle rows 18, 18 ', 18' ', 18' '' and each row of nozzles has a separate connection bore 27, 27 '. , 27 '', 27 '' 'is connected. As described above, each row of nozzles can be switched off or on individually.
  • the row of nozzles 18 is connected, for example, to the connection bores 27, in the nozzle bar and to the connection head 28 and the associated connection line (FIG. 4).
  • the row of nozzles 18 '' ' is then connected to the connection bore 27' '' and to the connection head 28 '' 'and the associated connection line.
  • the connecting lines 28 and 28 '' ' can each be quickly coupled or uncoupled via a flange 29 to the water supply line 25, so that the nozzle bar 20 as a structural unit can be quickly replaced by a new nozzle bar.
  • the scattering angle 19 specified for each flat jet nozzle is indicated schematically, as are the axes 30 ° of the flat jet nozzles aligned at different angles 1 or 2, which are fixed according to the slab width and the distance of the pressing tool from the slab center.
  • the best cooling of the pressing tools can be brought about if the area of the front edge of each pressing tool is continuously spray-cooled from the outside with the cooling medium, preferably water. After a short operating time, a thermal steady state has set in, so that the temperature of the front edge of the pressing tool remains below the maximum permissible material temperature. The temperature drops further towards the inside of the tool.
  • a slightly better cooling effect for the press tool can be achieved if in addition to that Spray cooling applied from the outside internally cools the press tool, for example, by means of coolant channels (not shown in detail) which are additionally arranged in the press tool at a distance from its front edge 17 and are connected to a coolant supply.
  • coolant channels not shown in detail
  • temperature change-resistant materials can be used for the pressing tool, the manufacture of which is economically favorable and the pressing surfaces can be reworked several times with the expected effort. Satisfactory cooling results for the pressing tool can also be achieved if the pressing tool is spray-cooled only during the process of upsetting a slab and not in the pause times between two slabs to be processed, or if the area of the leading edge of each pressing tool during the movement phase lifted from the slab edge coolant in the form of a spray cooling is applied to the outside and past the slab.
  • heat-resistant materials would have to be used, the cooling intensity of the spray cooling also being regulated in accordance with the maximum permissible temperatures for the heat-resistant material of the pressing tool.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Metal Rolling (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Press Drives And Press Lines (AREA)
EP91121014A 1990-12-24 1991-12-07 Einrichtung zum Kühlen der Presswerkzeuge einer Stauchpresse und Verfahren zum Betreiben der Einrichtung Expired - Lifetime EP0492227B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4041787 1990-12-24
DE4041787A DE4041787A1 (de) 1990-12-24 1990-12-24 Einrichtung zum kuehlen der presswerkzeuge einer stauchpresse und verfahren zum betreiben der einrichtung

Publications (2)

Publication Number Publication Date
EP0492227A1 EP0492227A1 (de) 1992-07-01
EP0492227B1 true EP0492227B1 (de) 1994-11-09

Family

ID=6421448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91121014A Expired - Lifetime EP0492227B1 (de) 1990-12-24 1991-12-07 Einrichtung zum Kühlen der Presswerkzeuge einer Stauchpresse und Verfahren zum Betreiben der Einrichtung

Country Status (9)

Country Link
US (1) US5349842A (enrdf_load_stackoverflow)
EP (1) EP0492227B1 (enrdf_load_stackoverflow)
KR (1) KR100197640B1 (enrdf_load_stackoverflow)
CN (1) CN1034558C (enrdf_load_stackoverflow)
AT (1) ATE113874T1 (enrdf_load_stackoverflow)
DE (2) DE4041787A1 (enrdf_load_stackoverflow)
ID (1) ID813B (enrdf_load_stackoverflow)
RU (1) RU2018407C1 (enrdf_load_stackoverflow)
TW (1) TW206169B (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2833871B1 (fr) * 2001-12-20 2004-07-09 Usinor Procede et installation de fabrication de bandes metalliques a partir de bandes coulees directement a partir de metal liquide
CN113198968B (zh) * 2021-06-01 2022-05-24 河北国智机械设备制造有限公司 一种用于螺母冷镦加工的冷却油喷洒装置
CN119870358A (zh) * 2025-03-28 2025-04-25 贵州鑫智联科技有限公司 一种用于贵银加工的自动打银装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB858726A (en) * 1957-09-14 1961-01-11 Ges Fertigungstechnik & Maschb Improvements in and relating to machines for hot-forming bar stock
DE2907464C2 (de) * 1979-02-26 1983-04-07 Hatebur Umformmaschinen AG, Basel Sicherheitseinrichtung zum periodischen Abtasten auf Anwesenheit eines Werkstückes von mindestens einem Stempel und zum Kühlen der Stirnfläche mindestens eines Stempels an einer automatischen Quertransportpresse zur Umformung von Metallteilen
DE8112471U1 (de) * 1981-04-28 1982-07-15 Eumuco Aktiengesellschaft für Maschinenbau, 5090 Leverkusen Hubbalkenmanipulator fuer gesenkschmiedepressen u.dgl.
US4474044A (en) * 1982-09-02 1984-10-02 Mcdonnell Douglas Corporation Apparatus and process for superplastically forming metals
JPS6133730A (ja) * 1984-07-26 1986-02-17 Hitachi Ltd プレス工具の冷却方法及び装置
JPH0661592B2 (ja) * 1986-06-25 1994-08-17 川崎製鉄株式会社 熱間スラブの幅圧下プレス金型の冷却方法
JPS63132740A (ja) * 1986-11-25 1988-06-04 Kawasaki Steel Corp 金型の冷却方法
JPH0790318B2 (ja) * 1987-04-30 1995-10-04 石川島播磨重工業株式会社 幅圧下プレスの金型
JP2593534B2 (ja) * 1988-11-11 1997-03-26 株式会社日立製作所 熱間圧延設備
JPH02192805A (ja) * 1989-01-18 1990-07-30 Sumitomo Metal Ind Ltd 熱間スラブの幅サイジング用金型
JPH03118907A (ja) * 1989-09-29 1991-05-21 Sumitomo Metal Ind Ltd 熱間スラブの幅サイジング用金型の冷却方法

Also Published As

Publication number Publication date
RU2018407C1 (ru) 1994-08-30
CN1062859A (zh) 1992-07-22
KR100197640B1 (ko) 1999-06-15
CN1034558C (zh) 1997-04-16
ATE113874T1 (de) 1994-11-15
DE59103501D1 (de) 1994-12-15
DE4041787A1 (de) 1992-06-25
EP0492227A1 (de) 1992-07-01
US5349842A (en) 1994-09-27
KR920011597A (ko) 1992-07-24
ID813B (id) 1996-07-17
TW206169B (enrdf_load_stackoverflow) 1993-05-21

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