DE19528328A1 - Method for re-mfr. of tungsten-contg. hard metals from secondary raw materials - Google Patents

Method for re-mfr. of tungsten-contg. hard metals from secondary raw materials

Info

Publication number
DE19528328A1
DE19528328A1 DE1995128328 DE19528328A DE19528328A1 DE 19528328 A1 DE19528328 A1 DE 19528328A1 DE 1995128328 DE1995128328 DE 1995128328 DE 19528328 A DE19528328 A DE 19528328A DE 19528328 A1 DE19528328 A1 DE 19528328A1
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DE
Germany
Prior art keywords
tungsten
raw materials
secondary raw
contg
mfr
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Withdrawn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
DE1995128328
Other languages
German (de)
Inventor
Alexander Schneider
Rostislav Didyk
Aleksander Vjunik
Ljudmila Grjacnova
Aleksander Anciferov
Jurij Savcenko
Nikolaj Pascenko
Galina Tubeljaeva
Eduard Masakovski
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Individual
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Individual
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Application filed by Individual filed Critical Individual
Priority to DE1995128328 priority Critical patent/DE19528328A1/en
Priority to DE1996127983 priority patent/DE19627983C2/en
Priority to PCT/DE1996/001457 priority patent/WO1997005295A1/en
Publication of DE19528328A1 publication Critical patent/DE19528328A1/en
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00—Obtaining refractory metals
    • C22B34/30—Obtaining chromium, molybdenum or tungsten
    • C22B34/36—Obtaining tungsten
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F8/00—Manufacture of articles from scrap or waste metal particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/001—Dry processes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B1/00—Explosive charges characterised by form or shape but not dependent on shape of container
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B33/00—Manufacture of ammunition; Dismantling of ammunition; Apparatus therefor
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Powder Metallurgy (AREA)

Abstract

Cutting, forming tools etc. are formed from W-contg. hard alloy secondary raw materials which are formed by milling, pressing and agglomeration. Regeneration fusion of the materials is carried out by explosion, e.g. by charging into a metal ampoule and subjecting the ampoule to an explosion to form a block for further processing.

Description

Die Erfindung gehört zu der pulverformigen Metallurgie; in diesem Fall, zu dem Verfahren zur Wiedergewinnung von Wolframkobaltmischungen aus Sekundärrohrstoffen und kann zur Herstellung von Schneid-, Gesteinszerstörungs- und formbildenden Werkzeugen verwendet werden.The invention belongs to powdered metallurgy; in this case, to the procedure for the recovery of tungsten cobalt mixtures from secondary raw materials and can be used for Manufacture of cutting, stone destruction and shape-forming tools used will.

Zur Zeit ist ein Verfahren bekannt für die Regeneration von karbidhaltigen Sekundärrohstoffen (Haupturheberschein 778285 S22 W7/00, W22F 1/00; veröffentlicht 23. 06. 91 Bulletin 23), einschließlich ihrer Oxidation mit sauerstoffhaltigen Gasen, Beschickung der reduzierbaren Metalle mit rußendem Kohlenstoff und schließlich die Karbidbildung. Dieses Verfahren hat jedoch eine geringe Leistungsfähigkeit und einen hohen Energieverbrauch.A method is currently known for the regeneration of carbide-containing Secondary raw materials (main copyright certificate 778285 S22 W7 / 00, W22F 1/00; published 23.06.91 bulletin 23), including its oxidation with oxygen-containing gases, Charging the reducible metals with carbon black and finally the Carbide formation. However, this method is poor in performance and high Power consumption.

Der Prototyp für die zu beantragende Erfindung ist ein Verfahren für die Regeneration von Abfallkernen wolframkobalthaltiger harter Legierungen (Haupturcherberschein 1717283 B22 F3/12, C22 B34/36, veröffentlicht 07. 03. 94, Bulletin 9), einschließlich ihrer Oxidation, Karbidbildung in Kohlenstoffatmosphäre, Zermahlung, Pressung und der Agglomeration. Zu den Mängeln dieses Verfahrens gehört, daß zu der Vorgangsausführung spezielle teuere Ausrüstung, viel Zeit (5-12 Stunden), und eine hohe Energieintensität benötigt wird. Die technisch - ökonomischen Kennziffern dieses Vorgangs werden dadurch erheblich verschlechtert.The prototype for the invention to be applied for is a process for the regeneration of Waste cores of tungsten cobalt-containing hard alloys (main wear license 1717283 B22 F3 / 12, C22 B34 / 36, published 07.03.94, bulletin 9), including their oxidation, Carbide formation in a carbon atmosphere, grinding, pressing and agglomeration. To One of the shortcomings of this procedure is that special expensive operations are required to carry out the procedure Equipment, a lot of time (5-12 hours), and a high energy intensity is needed. The This makes the technical and economic indicators of this process significant worsened.

Als Grundlage der Erfindung wird die Aufgabe gestellt, ein Regenerationsverfahren für die Schaffung von wolframhaltigen harten Verbindungen zu entwickeln, in dem zuerst die Verbindungen durch Explosivstoffe zerkleinert werden, so daß hochdefekte Strukturen entstehen und auf diese Weise sich die Prozeßausführungszeit, und die Energieintensität verringern. Außerdem wird keine teure technische Ausrüstung benötigt.As the basis of the invention, the task is a regeneration process for Creation of tungsten-containing hard compounds to develop, in which the first Connections are crushed by explosives, so that highly defective structures arise and in this way the process execution time, and the energy intensity to decrease. In addition, no expensive technical equipment is required.

Die gestellte Aufgabe wird gelöst, in dem, gemäß der Erfindung, das Regenerationsverfahren von wolframhaltigen harten Verschmelzungen einschließlich des Zermahlens, Pressens und der Agglomeration, zuerst eine Bearbeitung der Sekundärrohstoffe durch eine Explosion vorsieht. Die Kornzersplitterung von Karbidwolframen, Gobaltkalthärtung, Röntgenlinienerweiterung, und Dislokationsdichtevergrößerung bilden eine hochdefekte Struktur von Wolframkobaltverschmelzungen, was zu einer Ultradispersionsmischung bei dem nachfolgenden Mahlvorgang führt.The object is achieved in that, according to the invention, the regeneration process of tungsten containing hard fusions including grinding, pressing and agglomeration, first processing of secondary raw materials through an explosion provides. Grain fragmentation of carbide tungsten, cold cobalt hardening, X-ray line expansion and dislocation density enlargement form a highly defect Structure of tungsten cobalt mergers, resulting in an ultra dispersion mixture the subsequent grinding process.

In der Abbildung ist eine Schema für die Explosionsbearbeitung von Wolframkobaltverschmelzungen dargestellt: 1 - Ampulle, 2 - Wolframkobaltverschmelzungen, 3 - Explosionsstoffladung, 4 - Deckell.The figure shows a diagram for the explosion processing of tungsten cobalt fusions: 1 - ampoule, 2 - tungsten cobalt fusions, 3 - explosive charge, 4 - lid.

Das Verfahren wird folgendermaßen durchgeführt. Die Hartesekundärverschmelzungen bestimmter Arten lädt man in die Metallampullen 1 und verschließt die Deckel 4 hermetisch durch Schweißen. Die Ampulle taucht man in die Explosionsstoffladung 3, die dann gezündet wird. The procedure is as follows. The hard secondary fusions of certain types are loaded into the metal ampoules 1 and the covers 4 are hermetically sealed by welding. The ampoule is immersed in the explosive charge 3 , which is then ignited.

Die Zerkleinerung der Legierungen wird durch eine intensive Energieeinwirkung herbeigeführt, in dem durch die Explosion hochdefekte Strukturen mit maximaler Defektdichte entstehen. Nach der Explosionsbearbeitung werden die Abfallprodukte der harten Verschmelzungen in den Vibrationskugelmühlen zerkleinert und danach zu Rohlingen verpreßt und versintert.The crushing of the alloys is done by an intense energy impact caused by the explosion of highly defective structures with maximum Defect density arise. After the explosion processing, the waste products of the crushed hard fusions in the vibrating ball mills and then into blanks pressed and sintered.

AnwendungsbeispielApplication example

Man lädt zum Beispiel abgearbeitete schneidende Platten aus Wolframkobalt-Legierungen (Menge 35 kg) in hermetisch abgeschlossene zylindrische Metallampullen (Große 100 * 5 * 400 mm). Die Ampulle wird axial in einem Block aus einer kombinierendem Sprengladung untergebracht. Die Verwendung einer kombinierten Ladung (Haupturheberschein 801574, 1980) schutzt die Ampulle vor der Zerstörung und garantiert ihre Erhaltung. Die Verhältnis der Detonationsgeschwindigkeiten Außen(Da) zu Ihnen(Di) Ladungsschichten wählt man zu Da/Di 0,35. Die Zeit, die man für die Vorbereitung und die Ausführung von Explosionsbearbeitung aufwendet beläuft sich auf 0,5 Stunden.For example, processed cutting plates made of tungsten cobalt alloys (amount 35 kg) are loaded into hermetically sealed cylindrical metal ampoules (size 100 * 5 * 400 mm). The ampoule is placed axially in a block made of a combined explosive charge. The use of a combined charge (main copyright certificate 801574, 1980) protects the ampoule from destruction and guarantees its preservation. The ratio of the detonation speeds outside (Da) to you (Di) charge layers is chosen to be Da / Di 0.35. The time it takes to prepare and carry out explosion processing is 0.5 hours.

Nach der Explosionsbearbeitung der Ampulle wird diese mechanisch geöffnet und in die Korngrößen (0,5-2 mm) eingestuft. Die Vermahlung der explosionsbearbeiteten Legierungen wird in Vibrationskugelmühlen in Spiritusmilieu bis zum Erhalt einer ultradispersionsaktive Mischung mit den geforderten Eigenschaften durchgeführt. Ausgetrocknete Hartverschmelzungen mischt man mit Plastifikator, granuliert und verpreßt sie in Würfel und agglomeriert sie bei einer Temperatur von 850°C (vorläufige Agglomeration) und bei 1420°C (endgültige Agglomeration). Die Agglomerationsgeschwindigkeit beträgt bei V1=4,5 mm/min und bei V=7,9 mm/min.After the explosion processing of the ampoule, it is opened mechanically and into the Grain sizes (0.5-2 mm) classified. The grinding of the explosion-worked alloys is in vibrating ball mills in a spirit environment until you get one ultra-dispersive mixture with the required properties. Dried out hard fuses are mixed with plasticizer, granulated and pressed cube them and agglomerate them at a temperature of 850 ° C (preliminary Agglomeration) and at 1420 ° C (final agglomeration). The Agglomeration speed is V1 = 4.5 mm / min and V = 7.9 mm / min.

Physikalisch-mechanische Eigenschaften regenerierten Legierungen Wolframkobalt-6 setzte sich auf: Dichte=14,7 g/cm3; Härte 87,5 HPa; Porösitätsgrad -0,2; Festigkeit Gb=1615 MPa.Physico-mechanical properties of regenerated alloys of tungsten cobalt-6 settled on: density = 14.7 g / cm3; Hardness 87.5 HPa; Degree of porosity -0.2; strength Gb = 1615 MPa.

Die Versuchsergebnisse zeigen, daß die Qualität der Werkzeuge aus den Regenerationsverschmelzungen der Qualität von Standardschneidwerkzeugen entspricht. Durch das vorgeschlagene Verfahren ergibt sich für den Prozeß der Regeneration von Wolframkobalt-Legierungen eine erhebliche Zeitverkürzung, so daß eine höhere Prozeßleistungsfähigkeit bei geringerem Energieeinsatz und bei Verzicht auf komplizierte Technik erreicht wird. The test results show that the quality of the tools from the Regeneration mergers correspond to the quality of standard cutting tools. The proposed method results in the regeneration process of Tungsten cobalt alloys significantly reduce the time, so that a higher Process performance with lower energy consumption and without complicated processes Technology is achieved.  

Referatpresentation

Das Verfahren für die Wiederherstellung von wolframhaltigen harten Verschmelzungen gehört zu der pulverförmigen Metallurgie; in diesem Fall, zu dem Verfahren zur Wiederherstellung von Wolframkobaltlegierungen aus Sekundärrohstoffen und kann verwendet werden zur Herstellung von Schneid-, Gesteinszerstörungs- und formbildenden Werkzeugen.The procedure for the restoration of tungsten hard fusions belongs to powdered metallurgy; in this case, to the procedure for Restoration of tungsten cobalt alloys from secondary raw materials and can are used for the production of cutting, stone destruction and form-forming Tools.

Das vorgeschlagene Verfahren schließt die Vermahlung von Hartverschmelzungen, Pressen und Agglomeriren ein und unterscheidet sich dadurch, daß die Regenerationslegierungen mit der einer Explosion eingeleitet werden, um eine stark defekte Struktur der Wolframkobaltlegierungen herbeizuführen. Dadurch wird die Bildung von hochaktiven Ultradispersionsmischungen bei dem folgenden Mahlvorgang erreicht.The proposed process includes the milling of hard fusions, presses and agglomerates and differs in that the regeneration alloys with of an explosion initiated to a severely defective structure of the To bring about tungsten cobalt alloys. This will make the formation of highly active Ultra dispersion mixtures achieved in the following grinding process.

Als Vorteil ergibt sich größere Wirtschaftlichkeit durch geringeren Energieeinsatz, eine Zeitverkürzung und der Verzicht auf komplizierte und teure technische Ausrüstung.One advantage is greater economy through lower energy consumption, one Reduction of time and the elimination of complicated and expensive technical equipment.

Claims (1)

Das Verfahren für die Wiederherstellung von wolframhaltigen harten Legierungen ohne Zwischenschritte, einschließlich des Mahlvorganges, Preßvorganges und der Agglomeration, unterscheidet sich von anderen Verfahren dadurch, daß die Regenerationsverschmelzungen wurden durch Explosionen eingeleitet werden.The procedure for the recovery of tungsten-containing hard alloys without Intermediate steps, including the grinding process, pressing process and the Agglomeration, differs from other processes in that the Regeneration mergers have been initiated by explosions.
DE1995128328 1995-08-02 1995-08-02 Method for re-mfr. of tungsten-contg. hard metals from secondary raw materials Withdrawn DE19528328A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE1995128328 DE19528328A1 (en) 1995-08-02 1995-08-02 Method for re-mfr. of tungsten-contg. hard metals from secondary raw materials
DE1996127983 DE19627983C2 (en) 1995-08-02 1996-07-11 Method and device for recovering hard alloys
PCT/DE1996/001457 WO1997005295A1 (en) 1995-08-02 1996-07-31 Process and device for recovering hard alloys and sintered materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1995128328 DE19528328A1 (en) 1995-08-02 1995-08-02 Method for re-mfr. of tungsten-contg. hard metals from secondary raw materials

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DE19528328A1 true DE19528328A1 (en) 1996-08-14

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DE1995128328 Withdrawn DE19528328A1 (en) 1995-08-02 1995-08-02 Method for re-mfr. of tungsten-contg. hard metals from secondary raw materials
DE1996127983 Expired - Lifetime DE19627983C2 (en) 1995-08-02 1996-07-11 Method and device for recovering hard alloys

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DE1996127983 Expired - Lifetime DE19627983C2 (en) 1995-08-02 1996-07-11 Method and device for recovering hard alloys

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102133643A (en) * 2011-05-09 2011-07-27 山东众惠金属制品有限公司 Steel grit produced by waste steel wires and production method thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU778285A1 (en) * 1976-03-09 1991-06-23 Институт Металлургии Им.А.А.Байкова Method of regenerating carbide-containing waste of hard alloys
SU1717283A1 (en) * 1990-01-29 1992-03-07 Белорусское республиканское научно-производственное объединение порошковой металлургии Process for recovering lump waste of tungsten-cobalt hard alloys

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102133643A (en) * 2011-05-09 2011-07-27 山东众惠金属制品有限公司 Steel grit produced by waste steel wires and production method thereof

Also Published As

Publication number Publication date
DE19627983C2 (en) 1999-11-04
DE19627983A1 (en) 1997-05-15

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8143 Withdrawn due to claiming internal priority