EP1905521A1 - Billette ou bloc de presse et procédé de chauffage d'une billette ou bloc de presse dans un four poussant - Google Patents

Billette ou bloc de presse et procédé de chauffage d'une billette ou bloc de presse dans un four poussant Download PDF

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Publication number
EP1905521A1
EP1905521A1 EP07018272A EP07018272A EP1905521A1 EP 1905521 A1 EP1905521 A1 EP 1905521A1 EP 07018272 A EP07018272 A EP 07018272A EP 07018272 A EP07018272 A EP 07018272A EP 1905521 A1 EP1905521 A1 EP 1905521A1
Authority
EP
European Patent Office
Prior art keywords
pressing
face
billet
stud
block according
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Withdrawn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
EP07018272A
Other languages
German (de)
English (en)
Inventor
Leszek Dr. Poletek
Hans-Peter Höhe
Florian Dr. Schopper
Ali Aydin
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.)
Wieland Werke AG
Original Assignee
Wieland Werke 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 Wieland Werke AG filed Critical Wieland Werke AG
Publication of EP1905521A1 publication Critical patent/EP1905521A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/01—Extruding metal; Impact extrusion starting from material of particular form or shape, e.g. mechanically pre-treated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C29/00—Cooling or heating work or parts of the extrusion press; Gas treatment of work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C33/00—Feeding extrusion presses with metal to be extruded ; Loading the dummy block
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C33/00—Feeding extrusion presses with metal to be extruded ; Loading the dummy block
    • B21C33/006—Consecutive billets, e.g. billet profiles allowing air expulsion or bonding of billets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12229—Intermediate article [e.g., blank, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12229—Intermediate article [e.g., blank, etc.]
    • Y10T428/12264—Intermediate article [e.g., blank, etc.] having outward flange, gripping means or interlocking feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12229—Intermediate article [e.g., blank, etc.]
    • Y10T428/12271—Intermediate article [e.g., blank, etc.] having discrete fastener, marginal fastening, taper, or end structure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12292—Workpiece with longitudinal passageway or stopweld material [e.g., for tubular stock, etc.]

Definitions

  • the present invention relates to a billet or billet according to the preamble of claim 1 and a method of heating billets or billets in a blast furnace according to the preamble of claim 10.
  • An advantageous method considered from an economic point of view is the use of a block heating system, which is designed according to the pusher-furnace principle.
  • the oven envelope can be performed gas-tight closed, resulting in minimal heat loss of the furnace.
  • a 3-stage heat recovery in the form of a convective preheating, combustion air preheating and subsequent use of the heat of condensation of water vapor in the furnace entrance area, highest possible efficiency achieved.
  • a serious disadvantage when heating copper studs or copper alloy studs with a high copper content with a pusher furnace system is that at high material temperatures of up to 960-980 ° C and on the bolt end faces acting high pressures, the bolts partially solid welded together. These welds can be explained by diffusion processes, which occur at the bolt contact points and cause a cohesive connection.
  • DE 30 17 535 C2 discloses a method of heating blocks in a blast furnace in which the blocks are slid over a tilting edge at the exit end of the furnace to separate the blocks from each other and to provide sufficient clearance between the blocks for onward transport.
  • the object of the present invention is to further develop billets or pressing blocks and a corresponding method so that they are easily separable from each other after a temperature treatment in a blast furnace.
  • the invention includes a pressing bolt or a pressing block with two end faces, wherein the surface of at least one end face has a three-dimensional topography, which consists of a substantially flat end face from which protrude locally elevations.
  • the invention is based on the idea of creating a defined contact surface between the bolts in order to achieve a targeted bonding, if this is unavoidable due to high process temperatures.
  • the bolts are in the form of a string close together. With every new entry at the input end of the oven, the contents of the oven are transported one step further. As a result, a heated pin comes out of the oven at the exit end.
  • the contact surface is dimensioned so that when discharging a bolt at the end of a pusher, a simple pliers is sufficient to safely separate a surface welded to adjacent bolts with relatively little effort. It is already possible to determine the required contact surface from material parameters by means of calculation methods for cold and hot forming.
  • the particular advantage is that the common contact area with adjacent bolts is correspondingly minimized in order to be able to easily separate them from one another following a temperature treatment in a pusher furnace.
  • a pin, a small plate or a dome-shaped bulge can be arranged as a local survey.
  • the pins may have such a small diameter that they can be quite deformed in a blast furnace by the transport process, but are still kink-resistant. However, the deformation can only be accepted to the extent that there is no large-area contact of adjacent stud surfaces.
  • a pin, a small plate or a dome-shaped bulge can be arranged centrally. As a result, a central force is generated on adjacent billets or pressing blocks in the axial direction for the transport mechanism in a blast furnace.
  • a plurality of pins, plates or dome-shaped bulges can be arranged distributed over the end face.
  • the pins, plates or dome-shaped bulges may be made of the same material as the press studs, for example of copper or a copper alloy.
  • the press studs for example of copper or a copper alloy.
  • the pins can each be arranged in bores.
  • the pins can also be fastened by riveting the bolt become. As a result, no foreign materials are used during joining.
  • the respective end face can have bulges on the outer circumference. These can be produced by means of chipless forming processes by radial upsetting or hammering.
  • the respective end face may have an annular bead on the outer circumference. This can be done by rolling the bolt edge in the transition of the front side to the side surface. Even with other forming techniques, such as the reverse extrusion, the faces can be shaped accordingly.
  • Another aspect of the invention includes a method for heating billets or billets in a blast furnace, wherein at least one end face in contact with the respective adjacent billet or billet is formed into a three-dimensional topography consisting of a substantially flat face emerge the local elevations, wherein the common contact surface is so small that in the case of emerging from the heating cohesive connection of the exit end of the furnace escaping billet or billet with little effort by a separator or even by its own weight from adhering adjacent billet or billet is disconnected.
  • the advantages achieved by the invention are the simple separation of the transported in a blast furnace bolt due to a reduction of the common contact surfaces.
  • Fig. 1 shows a side view of a pressing bolt 1 with four arranged on the front side 2 pins 3 and the corresponding front view as an embodiment of the invention, in which additional material is used.
  • Small pins 3 for reasons of recycling of the same material as the bolt 1, are mounted distributed on the front side of the bolt 1. The size of the total area of all pins 3 is determined by the breaking force when pulling out the bolt 1.
  • Fig. 2 shows a side view of two touching bolts 1 with a central arrangement of a small plate 4 on the front side 2 of the bolt 1 with a slight oblique cut.
  • the plate 4 may be stamped from strip material, for example. Its thickness must be at least so great that even with a slight oblique cut bolts and mating pins come into contact only in the area of the plate 4 with each other. The size of the area will turn determined by the breaking force when removing the bolt 1.
  • the pins 3 and plate 4 can then be added to the bolt, for example by welding, gluing or riveting.
  • Fig. 3 is a side view of a bolt 1 with a centrally located dome-shaped bulge 5 and the corresponding front view is shown.
  • FIG. 4 another example is shown in which no additional material is needed.
  • the principal aim is according to the invention to achieve elevations on the front side of the bolt 1.
  • the figure shows a longitudinal section of a bolt 1 with bulges on the outer periphery 6 and the corresponding front view.
  • a punch is pressed radially into the bolt material in the region of the circumferential edge of the bolt.
  • the edge can be broken.
  • the displaced material flows in the direction of least resistance and thus forms a bulge on the free end face 2.
  • Some more locally located bumps can be distributed around the perimeter.
  • the detail A shows an enlarged view of a bulge 6.
  • Fig. 5 shows a longitudinal section of a bolt 1 with an annular bead 7 and the corresponding front view.
  • the bead 7 is produced by rolling the bolt edge in the transition of the end face to the side surface.
  • Fig. 6 shows a section of a deformed by means of reverse extrusion pin 1 before and after forming with a pressing tool 8.
  • the material flows counter to the effective direction of the tool movement.
  • the tool 8 must be constructed so that it has recesses for the pin-shaped protrusions 3. If the flow resistance in the other spatial directions is too great, the material will flow through the recesses against the tool movement. If necessary, the bolt 1 must be supported accordingly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Of Metal (AREA)
  • Connection Of Plates (AREA)
  • Metal Rolling (AREA)
EP07018272A 2006-09-26 2007-09-18 Billette ou bloc de presse et procédé de chauffage d'une billette ou bloc de presse dans un four poussant Withdrawn EP1905521A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006045234A DE102006045234B3 (de) 2006-09-26 2006-09-26 Pressbolzen oder Pressblock und Verfahren zum Erwärmen eines Pressbolzens oder Pressblocks in einem Stoßofen

Publications (1)

Publication Number Publication Date
EP1905521A1 true EP1905521A1 (fr) 2008-04-02

Family

ID=38664057

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07018272A Withdrawn EP1905521A1 (fr) 2006-09-26 2007-09-18 Billette ou bloc de presse et procédé de chauffage d'une billette ou bloc de presse dans un four poussant

Country Status (3)

Country Link
US (1) US8298681B2 (fr)
EP (1) EP1905521A1 (fr)
DE (1) DE102006045234B3 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1599572A (en) * 1922-02-02 1926-09-14 Scovill Manufacturing Co Art of producing articles by extrusion
US1720722A (en) * 1927-11-26 1929-07-16 Western Electric Co Slug for use in extrusion operations and method of extrusion
DE728857C (de) * 1938-04-20 1942-12-04 Mannesmann Ag Verfahren zum Vorbereiten von vollen Bloecken zum Strangpressen von Rohren
GB625919A (en) * 1945-10-18 1949-07-06 Thomas Jerome Masse Improvements in and relating to the manufacture of metal shells by impact extrusion
US3805574A (en) * 1969-04-21 1974-04-23 O Wessel Equipment for extrusion
JPS5722814A (en) * 1980-06-13 1982-02-05 Fujisash Co Extruding method for aluminum shape material and coupling pin of billet for extrusion
JPS5867819A (ja) * 1981-10-15 1983-04-22 Sumitomo Metal Ind Ltd 鋼材の加熱方法
JPS58217633A (ja) 1982-06-11 1983-12-17 Nippon Steel Corp 方向性電磁鋼スラブの加熱方法
JPH03198911A (ja) 1989-12-27 1991-08-30 Sumitomo Metal Ind Ltd 熱間押出し加工用ビレット採取方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3766768A (en) * 1972-06-22 1973-10-23 Western Electric Co Method of and means for commencing a deforming operation, e. g. hydrostatic extrusion of a billet
DE3017535C2 (de) * 1980-05-08 1986-08-07 Ruhrgas Ag, 4300 Essen Verfahren zum Wärmen von Blöcken u.dgl. in einem Stoßofen
FR2574322B1 (fr) * 1984-12-10 1989-05-19 Clecim Sa Installation de preparation de billettes de metal a filer
GB8921079D0 (en) * 1989-09-18 1989-11-01 Alcan Int Ltd Aluminium extrusion
US5016460A (en) * 1989-12-22 1991-05-21 Inco Alloys International, Inc. Durable method for producing finned tubing
GB9016694D0 (en) * 1990-07-30 1990-09-12 Alcan Int Ltd Ductile ultra-high strength aluminium alloy extrusions
JPH10508254A (ja) * 1994-10-13 1998-08-18 ブリティッシュ・アルミニウム・ホールディングズ・リミテッド 後方押出し法及びその製品
US5475915A (en) * 1994-10-31 1995-12-19 Igc Advance Superconductors, Inc. Method for increasing extrusion yield in forming a superconducting rod
DE29502437U1 (de) * 1995-02-15 1995-07-06 Gutke Eckhard Vorrichtung zum Berußen von Preßbolzen, Blöcken o.dgl.
JP2001191110A (ja) * 1999-12-28 2001-07-17 Showa Alum Corp 可変断面押出材の製造方法
DE10024459A1 (de) * 2000-05-18 2001-11-29 Techint Italimpianti Deutschla Verfahren zum Erwärmen in einem Stoßofen
WO2004097057A2 (fr) * 2003-04-29 2004-11-11 Robert Hailey Alliages de metaux a haute resistance/superdeformables
US7563335B2 (en) * 2005-11-07 2009-07-21 Trw Vehicle Safety Systems Inc. Method of forming a housing of a vehicle occupant protection apparatus

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1599572A (en) * 1922-02-02 1926-09-14 Scovill Manufacturing Co Art of producing articles by extrusion
US1720722A (en) * 1927-11-26 1929-07-16 Western Electric Co Slug for use in extrusion operations and method of extrusion
DE728857C (de) * 1938-04-20 1942-12-04 Mannesmann Ag Verfahren zum Vorbereiten von vollen Bloecken zum Strangpressen von Rohren
GB625919A (en) * 1945-10-18 1949-07-06 Thomas Jerome Masse Improvements in and relating to the manufacture of metal shells by impact extrusion
US3805574A (en) * 1969-04-21 1974-04-23 O Wessel Equipment for extrusion
JPS5722814A (en) * 1980-06-13 1982-02-05 Fujisash Co Extruding method for aluminum shape material and coupling pin of billet for extrusion
JPS5867819A (ja) * 1981-10-15 1983-04-22 Sumitomo Metal Ind Ltd 鋼材の加熱方法
JPS58217633A (ja) 1982-06-11 1983-12-17 Nippon Steel Corp 方向性電磁鋼スラブの加熱方法
JPH03198911A (ja) 1989-12-27 1991-08-30 Sumitomo Metal Ind Ltd 熱間押出し加工用ビレット採取方法

Also Published As

Publication number Publication date
DE102006045234B3 (de) 2008-03-06
US20080075969A1 (en) 2008-03-27
US8298681B2 (en) 2012-10-30

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