EP3077132B1 - Verfahren zur herstellung von pressbolzen - Google Patents

Verfahren zur herstellung von pressbolzen Download PDF

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Publication number
EP3077132B1
EP3077132B1 EP14812708.7A EP14812708A EP3077132B1 EP 3077132 B1 EP3077132 B1 EP 3077132B1 EP 14812708 A EP14812708 A EP 14812708A EP 3077132 B1 EP3077132 B1 EP 3077132B1
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EP
European Patent Office
Prior art keywords
billet
press
extrusion
waste
scrap
Prior art date
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Active
Application number
EP14812708.7A
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German (de)
English (en)
French (fr)
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EP3077132A1 (de
Inventor
Andreas Jäger
Karl-Heinz Lindner
Ralf Anderseck
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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
    • B21C33/00—Feeding extrusion presses with metal to be extruded ; Loading the dummy block
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/32—Presses specially adapted for particular purposes for consolidating scrap metal or for compacting used cars
    • B30B9/327—Presses specially adapted for particular purposes for consolidating scrap metal or for compacting used cars for briquetting scrap metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • 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
    • B21C23/001—Extruding metal; Impact extrusion to improve the material properties, e.g. lateral extrusion
    • 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
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products

Definitions

  • the invention relates to a method for the production of billets for extruding profiles of magnesium or magnesium alloys.
  • chips or stamping or separating waste are produced both during the exciting processing and during the punching or separating processing.
  • the resulting material residues still have the same material properties, as they have the semi-finished products or components produced.
  • the loose chips are pressed into metal briquettes.
  • a briquetting press suitable for this purpose is for example from the EP 0367 859 A1 known.
  • the briquetting press has a pre-press chamber and a downstream press chamber.
  • the material to be pressed is fed via a feed screw to a supercharger piston, so that the receiving chamber fills to the desired height. Subsequently, a pressing piston for compressing the material is actuated.
  • the device for pressing the metal chips in metal briquettes has a storage container for the metal chips, which is arranged downstream of a paddle wheel, on.
  • the paddle wheel feeds the metal chips to a pre-compression chamber.
  • the pre-compression chamber is followed by a compression chamber in which the pre-pressed metal chips are then pressed into metal briquettes and then fed to the melting process.
  • Punching or cutting waste can not be processed as a result, because you have much larger geometric dimensions such as metal chips.
  • the disadvantage here on the one hand the high cost of collecting, storing and pretreatment of the separation residues and on the other hand, the high energy consumption for melting for recycling.
  • the U.S. Patent 2,391,752 describes a process for producing finished products, such as pipes, rods and profiles, from wastes of aluminum or aluminum alloys comprising compressing the wastes and holding them at a temperature of about 300 ° C and a pressure of about 3 to 8 tons per square inch whereby oxide coatings of the waste particles are broken and new metallic contact surfaces are formed, then the temperature is raised to about 350 to 450 ° C and molding of the finished products is carried out in a press at a pressure of about 18 to 40 tons per square inch.
  • the apparatus comprises an extrusion press with a compression chamber, a compression punch, a pressing die and a recipient into which a heap consisting of separation residues separating manufacturing process or the like. As chips or residual materials can be filled.
  • the device has between the die and compression chamber on the compression chamber sealing matrizen oil sealing cover against which the plunger compacts the heap of separating residues into a compact and thereby removes remaining in the compression chamber and in the heap fluid inclusions. After removal of the cover, the compacted compact is pressed through the press die as a profile cross-section.
  • a pre-compaction may optionally take place in a separate facility to squeeze a heap into dimensions. This allows a simple filling of the compression space of the extruder.
  • the compaction to a compact may take place in the compression chamber, the open end of which is closable relative to the pressing die, under heating and over a predefinable period of time under constant hydrostatic pressure conditions to form a compact.
  • the disadvantage here is the relatively long stoppage of the extruder in the production of extruded sections, as each time after the compact was formed by means of the press die to profile, on the same extruder a new compact must be made of separating residues. This entails relatively long downtimes for the actual profile production and the subsequent further processing of the profiles.
  • Another disadvantage is that the cover must be pivoted or inserted between the end of the compression chamber and press die. Since they have to close the compression chamber on the one hand and release the way to the press die on the other during the extrusion process, their installation in an existing extrusion press is associated with an increased outlay.
  • the plant for the production of billets from waste of punching, cutting and / or machining includes a storage unit for the waste, a device for crushing the waste, a press for producing a round bar, a furnace for heating the round bar and an extruder for the production of extrusion billets.
  • the storage unit can be designed so that chambers are provided for waste different geometric dimensions. Chips have a relatively fine grain size and thus can be filled directly into the press, while punching or cutting waste are cut by a device into a suitable size.
  • the waste chopper preferably operates after the cutting process, thereby minimizing the accumulation of dust.
  • the waste of the individual chambers can be mixed and conveyed by means of a pre-compressor in the press.
  • the supercharger is heated and designed as a screw compressor.
  • the waste filled into these press cylinders of the press is compacted there to form a round bar with more than 60% density.
  • the compaction in the press is followed by heating of the round bar and extrusion of the round bar in a normal extruder to form a billet strand, which is cut to an appropriate length after leaving the die.
  • a pressing force is deflected once or several times during the pressing process under shear deformation (multiple shearing and accumulation of shearing strains) within the material, an improvement in the grain fineness occurs.
  • a homogenization of the billet at a temperature above 400 ° C for a period of about 6 hours can be made.
  • the finished press studs then have a density of greater than 95% and can then be stored temporarily or be further processed in the press lines to finished extruded profiles. This has the advantage that the downtime in the extrusion lines remain limited only to the changeover time for the extrusion billet.
  • the finished billets from the recycled material (waste) have properties that meet statically, dynamically and alternately the specification of the alloy and are therefore equally usable in addition to primary produced billets.
  • magnesium or magnesium alloys are available here.
  • the FIG. 1 shows a diagram of the system according to the invention for the production of billets 1.
  • This consists essentially of a storage unit for the waste material from the current production. Since one and the same material, namely a magnesium alloy, preferably an alloy of the designation MnE21®, is used for the entire production, the material waste is also pure waste.
  • the waste is picked up separately according to their geometric dimensions.
  • Low grained waste for example, from machining, can be conveyed directly to the press 3 .
  • Waste with larger geometric dimensions such as punching waste or blends are crushed by a device 2 in waste with a suitable grain size. These can then either be fed into the press 3 or mixed with the other wastes, such as the chips.
  • the press 3 is designed as a mechanical press with a vertical round die.
  • the vertical design facilitates the filling of the mold and also allows the greatest possible filling. Also conceivable would be a press unit with several juxtaposed press molds. By applying a pressing force to the filling of the mold, a round bar with a density of more than 60% is produced.
  • the produced round bars 7 are heated in an oven 4 to a temperature of about 450 ° C. Subsequently, the heated round bar 7 is inserted into the recipient of the extruder 5 and deformed by pressurization to a pressing pin 6 or extrusion billet strand. In the case of a press stud strand, this can be cut to length after leaving the die, for example by means of a flying saw.
  • the resulting billet has a density of greater than 95%.
  • the billet can be further processed in an extrusion press in the press lines to appropriate profiles or stored.
  • a homogenization of the billet at a temperature above 400 ° C and during a period of about 6 hours take place.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Extrusion Of Metal (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Processing Of Solid Wastes (AREA)
  • Powder Metallurgy (AREA)
EP14812708.7A 2013-12-05 2014-11-27 Verfahren zur herstellung von pressbolzen Active EP3077132B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14812708T PL3077132T3 (pl) 2013-12-05 2014-11-27 Sposób produkcji prętów

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013020319.8A DE102013020319B4 (de) 2013-12-05 2013-12-05 Verfahren und Anlage zur Herstellung von Pressbolzen
PCT/DE2014/000605 WO2015081924A1 (de) 2013-12-05 2014-11-27 Verfahren und anlage zur herstellung von pressbolzen

Publications (2)

Publication Number Publication Date
EP3077132A1 EP3077132A1 (de) 2016-10-12
EP3077132B1 true EP3077132B1 (de) 2019-01-16

Family

ID=52103023

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14812708.7A Active EP3077132B1 (de) 2013-12-05 2014-11-27 Verfahren zur herstellung von pressbolzen

Country Status (10)

Country Link
US (1) US10363589B2 (ja)
EP (1) EP3077132B1 (ja)
JP (1) JP6624685B2 (ja)
KR (1) KR20160094435A (ja)
CN (1) CN105960324A (ja)
CA (1) CA2932903C (ja)
DE (1) DE102013020319B4 (ja)
ES (1) ES2719824T3 (ja)
PL (1) PL3077132T3 (ja)
WO (1) WO2015081924A1 (ja)

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* Cited by examiner, † Cited by third party
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ITUA20163561A1 (it) * 2016-05-18 2017-11-18 Almag Spa Metodo per la realizzazione di una billetta di ottone senza piombo o a basso contenuto di piombo e billetta così ottenuta
DE102017105468A1 (de) 2017-03-15 2018-09-20 Phoenix Contact Gmbh & Co. Kg Verfahren und Pressvorrichtung zum Herstellen eines Werkstücks aus nach einer spanenden Bearbeitung eines Fertigungsteils erhaltenen Spänen
CN107283907B (zh) * 2017-08-22 2023-04-07 中冶京诚（湘潭）重工设备有限公司 一种转盘式铁屑压饼全自动生产线
CN108274807B (zh) * 2018-01-15 2019-08-13 浙江宝驰工贸有限公司 一种用于轮毂加工中产生铝屑的回收处理加工线
CN110479962A (zh) * 2019-08-07 2019-11-22 安徽凤杰金属资源有限公司 一种由废旧钢铁制成的耐磨合金
CN115008813B (zh) * 2022-04-29 2023-06-23 中冶南方工程技术有限公司 一种带钢废边压块控制方法及系统

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DE2518935A1 (de) * 1974-12-24 1976-07-08 Kobe Steel Ltd Verfahren zum umwandeln von aluminiumabfall zu einem fertigerzeugnis
JPS51122652A (en) * 1975-04-21 1976-10-26 Riken Keikinzoku Kogyo Kk Method of extruding aluminum alloy die material
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Also Published As

Publication number Publication date
DE102013020319B4 (de) 2016-05-25
ES2719824T3 (es) 2019-07-16
JP2017501038A (ja) 2017-01-12
CA2932903C (en) 2018-05-01
WO2015081924A1 (de) 2015-06-11
EP3077132A1 (de) 2016-10-12
CA2932903A1 (en) 2015-06-11
DE102013020319A1 (de) 2015-06-11
KR20160094435A (ko) 2016-08-09
PL3077132T3 (pl) 2019-09-30
US20160303630A1 (en) 2016-10-20
US10363589B2 (en) 2019-07-30
JP6624685B2 (ja) 2019-12-25
CN105960324A (zh) 2016-09-21

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