EP0123961B1 - Verschleissbeständiger Verbundkörper und Verfahren zu seiner Herstellung - Google Patents

Verschleissbeständiger Verbundkörper und Verfahren zu seiner Herstellung Download PDF

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Publication number
EP0123961B1
EP0123961B1 EP84103772A EP84103772A EP0123961B1 EP 0123961 B1 EP0123961 B1 EP 0123961B1 EP 84103772 A EP84103772 A EP 84103772A EP 84103772 A EP84103772 A EP 84103772A EP 0123961 B1 EP0123961 B1 EP 0123961B1
Authority
EP
European Patent Office
Prior art keywords
weight
hard
particles
composite body
metal
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
Application number
EP84103772A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0123961A3 (en
EP0123961A2 (de
Inventor
Josef Blum
Johannes Jachowski
Helmut Klasing
Paul Pant
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.)
Fried Krupp AG
Original Assignee
Fried Krupp 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 Fried Krupp AG filed Critical Fried Krupp AG
Priority to AT84103772T priority Critical patent/ATE33042T1/de
Publication of EP0123961A2 publication Critical patent/EP0123961A2/de
Publication of EP0123961A3 publication Critical patent/EP0123961A3/de
Application granted granted Critical
Publication of EP0123961B1 publication Critical patent/EP0123961B1/de
Expired 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
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
    • C22C33/0292—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with more than 5% preformed carbides, nitrides or borides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/14—Casting in, on, or around objects which form part of the product the objects being filamentary or particulate in form
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/10—Alloys containing non-metals
    • C22C1/1036—Alloys containing non-metals starting from a melt
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • 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
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]

Definitions

  • the invention relates to a wear-resistant composite body which consists of a metallic base material and a wear-resistant zone which contains hard material and / or hard metal particles in addition to the base material.
  • the invention further relates to a method for producing this wear-resistant composite body.
  • the composite bodies of the type mentioned at the outset include wear parts which are armored with weld-on alloys.
  • the weld-on alloys consist of hard material or hard metal particles which are surrounded by a welding electrode jacket.
  • the electrode jacket forms a metal matrix in which the hard material and hard metal particles are embedded.
  • the metallic base and the electrode jacket can consist of the same alloy.
  • the welded-on material forms the wear-resistant zone of the wearing part.
  • the use of weld-on alloys is limited by the fact that only thin layers adhere firmly enough to the metal base and that the thin layers are destroyed relatively quickly.
  • DE-PS-2 919 477 discloses a wear-resistant composite body of the type mentioned at the outset, in which the base material consists of 1 to 4% by weight of carbon, 0.3 to 0.6% by weight of silicon, 0.5 up to 1.5% by weight of manganese, 0.8 to 2.8% by weight of vanadium, 0.5 to 1.5% by weight of chromium, 2 to 10% by weight of tungsten, 0.01% by weight -% aluminum and the rest of iron and in which the initial weight of hard material or hard metal to the base material has a ratio of 1: 5, the grain size of the hard material and / or hard metal particles being 0.5 to 5 mm.
  • This composite body is produced by adding hard metal and / or hard material grains of 0.5 to 5 mm in size with simultaneous cooling of the melt to a liquid metal alloy cast into a mold, with the hard metal and hard material grains in the melt sink.
  • the composite body known from DE-PS-2 919 477 has the disadvantage that its base material can be machined only with difficulty and that its hard and / or hard metal-free area can therefore practically not be produced from the base material. Rather, the composite body known from DE-PS-2 919 477 is soldered or welded onto a metallic base when it is to be processed into a wear-resistant workpiece or machine part. It has also proven to be disadvantageous that the alloy from which the base material of the composite body according to DE-PS-2 919 477 is made is difficult to weld.
  • the invention has for its object to provide a composite body of the type mentioned, the hard metal or hard material-free metallic area can be machined well and welded in order to be able to connect the composite body with other metal parts quickly and safely.
  • a base material had to be found which can be machined and welded and which melts so low that it is suitable as a metal matrix for the storage of hard material and / or hard metal particles.
  • the invention is also based on the object of providing a method for producing the composite body.
  • the object on which the invention is based is achieved in that the base material consists of 0.001 to 1.5% by weight of carbon, 0.5 to 8% by weight of boron, 1 to 8% by weight of niobium, 0.2 to 6% by weight .-% chromium, 0 to 30 wt .-% nickel, 0 to 10 wt .-% manganese, 0 to 6 wt .-% vanadium, 0 to 5 wt .-% molybdenum, 0 to 5 wt .-% silicon as well
  • the rest of the iron is composed that the hard material and hard metal particles have a diameter of 0.1 to 20 mm and that the proportion of hard material and hard metal particles in the wear-resistant zone is between 25 and 95% by volume.
  • an alloy with the above-mentioned composition has a low melting range, which is below 1400 ° C., and that this alloy can surprisingly be machined well and is easy to weld, and hard and hard metal particles are embedded.
  • the base material therefore makes it possible to produce composite bodies with large dimensions, which have both a weldable and machinable metallic, hard and hard metal-free area and a wear-resistant, hard and hard metal-containing wear-resistant zone and in which the wear-resistant zone is full is integrated.
  • the composite body according to the invention has particularly advantageous properties and is particularly easy to weld if the base material consists of 0.05 to 0.5% by weight of carbon, 0.5 to 2% by weight of boron, 2 to 4% by weight of niobium, 2 to 4 wt.% Chromium, 10 to 20 wt.% Nickel, 4 to 8 wt.% Manganese, 1 to 3 wt.% Vanadium, 0 to 2 wt.% Molybdenum, 1 to 3 wt. -% silicon and the rest iron is composed.
  • the hard material particles consist of WC and / or W 2 C and that the hard metal particles consist of broken hard metal scrap.
  • Hard materials in the sense of the invention are hard carbides, nitrides, borides, oxides and silicides.
  • Hard metals in the sense of the invention are alloys which are composed of one or more hard materials, in particular carbides, and a binding metal which consists of iron, cobalt and / or nickel.
  • Hard metal scrap is a waste product for manufacturers and users Hard metal products and can be reused according to the invention particularly advantageously.
  • the proportion of the wear-resistant zone in the composite body is between 2 and 50% by volume.
  • the object on which the invention is based is also achieved by the creation of a method for producing the composite body, in which a metal melt consisting of 0.001 to 1.5% by weight of carbon, 0.5 to 8% by weight of boron, 1 to 8 % By weight niobium, 0.2 to 6% by weight chromium, 0 to 30% by weight nickel, 0 to 10% by weight manganese, 0 to 6% by weight vanadium, 0 to 5% by weight % Molybdenum, 0 to 5 wt .-% silicon and the rest of iron, is poured into a ceramic mold and in the hard metal and / or hard metal particles, which have a diameter of 0.1 to 20 mm, in the liquid metal melt such an amount that their share in the wear-resistant zone is between 25 and 95 vol .-%.
  • a metal melt consisting of 0.001 to 1.5% by weight of carbon, 0.5 to 8% by weight of boron, 1 to 8 %
  • niobium 0.2 to
  • This method has the advantage that the metallic area and the wear-resistant zone form one body.
  • the hard material and hard metal particles are firmly embedded in the metal matrix, which is achieved in that the hard material and hard metal particles are dissolved on their surface as they sink in the melt and are therefore very firmly embedded in the metal matrix of the wear-resistant zone which is on the Forms base of the mold.
  • Hard material and hard metal particles, which have an irregular geometric shape, are particularly firmly embedded in the metal matrix.
  • the process according to the invention can be carried out particularly economically if the mold consists of bound molding sand.
  • the hard material and / or hard metal particles are either scattered evenly onto the surface of the molten metal or that the hard material and / or hard metal particles embedded in a residue-free evaporating plastic carrier are introduced into the mold prior to casting.
  • the hard material and hard metal particles sink downward in the liquid metal melt and form the wear-resistant zone of the composite body there.
  • the sinking of the hard material and / or hard metal particles in the molten metal can be influenced in an advantageous manner in that the shape vibrates during the introduction of these particles, that is to say is set in a vibration movement by a corresponding device.
  • the composite body is used for the production of tools for removing and / or crushing coal, rocks, minerals, soil, glass or waste, since such tools are subject to particularly great wear and tear, have different geometric shapes and sizes as well as releasably or permanently connected to the corresponding machine tools.
  • the composite body according to the invention can be processed by the method for its production into a weldable excavator tooth, a rock drill, a beater for hammer mills to be fastened by screwing, or an impact plate for impact mills.
  • the racket designed in accordance with the invention has proven itself very well in practical use in the crushing of sand-lime brick.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Powder Metallurgy (AREA)
  • Laminated Bodies (AREA)
  • Ceramic Products (AREA)
EP84103772A 1983-04-27 1984-04-05 Verschleissbeständiger Verbundkörper und Verfahren zu seiner Herstellung Expired EP0123961B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84103772T ATE33042T1 (de) 1983-04-27 1984-04-05 Verschleissbestaendiger verbundkoerper und verfahren zu seiner herstellung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3315125A DE3315125C1 (de) 1983-04-27 1983-04-27 Verschleissbestaendiger Verbundkoerper und Verfahren zu seiner Herstellung
DE3315125 1983-04-27

Publications (3)

Publication Number Publication Date
EP0123961A2 EP0123961A2 (de) 1984-11-07
EP0123961A3 EP0123961A3 (en) 1986-01-02
EP0123961B1 true EP0123961B1 (de) 1988-03-16

Family

ID=6197413

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84103772A Expired EP0123961B1 (de) 1983-04-27 1984-04-05 Verschleissbeständiger Verbundkörper und Verfahren zu seiner Herstellung

Country Status (5)

Country Link
US (1) US4626464A (ja)
EP (1) EP0123961B1 (ja)
JP (1) JPH066773B2 (ja)
AT (1) ATE33042T1 (ja)
DE (1) DE3315125C1 (ja)

Families Citing this family (22)

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AT391324B (de) * 1987-12-23 1990-09-25 Boehler Gmbh Pulvermetallurgisch hergestellter schnellarbeitsstahl, daraus hergestellter verschleissteil und verfahren zu seiner herstellung
FR2667809B1 (fr) * 1990-10-11 1994-05-27 Technogenia Sa Procede pour la realisation de pieces a surface antiabrasion.
DE69330035T2 (de) * 1992-11-19 2001-06-21 Sheffield Forgemasters Ltd Eisenmetallgusswerkstoffe, insbesondere für walzrollen
CA2102656A1 (en) * 1992-12-14 1994-06-15 Dwight D. Erickson Abrasive grain comprising calcium oxide and/or strontium oxide
DE19528512C2 (de) * 1995-08-03 2001-02-22 Swb Stahlformgusgmbh Verschleißteile und Verfahren zu deren Herstellung
US8684475B2 (en) * 2002-03-06 2014-04-01 Deere & Company Components of track-type machines having a metallurgically bonded coating
US9138805B2 (en) 2002-03-06 2015-09-22 Deere & Company Method for applying wear resistant coating to mechanical face seal
US9616951B2 (en) 2002-03-06 2017-04-11 Deere & Company Non-carburized components of track-type machines having a metallurgically bonded coating
US7438741B1 (en) 2003-05-20 2008-10-21 Exxonmobil Research And Engineering Company Erosion-corrosion resistant carbide cermets for long term high temperature service
US7074253B2 (en) * 2003-05-20 2006-07-11 Exxonmobil Research And Engineering Company Advanced erosion resistant carbide cermets with superior high temperature corrosion resistance
US7175687B2 (en) * 2003-05-20 2007-02-13 Exxonmobil Research And Engineering Company Advanced erosion-corrosion resistant boride cermets
US7175686B2 (en) * 2003-05-20 2007-02-13 Exxonmobil Research And Engineering Company Erosion-corrosion resistant nitride cermets
WO2007030701A2 (en) * 2005-09-07 2007-03-15 M Cubed Technologies, Inc. Metal matrix composite bodies, and methods for making same
US7731776B2 (en) 2005-12-02 2010-06-08 Exxonmobil Research And Engineering Company Bimodal and multimodal dense boride cermets with superior erosion performance
CA2705769A1 (en) 2007-11-20 2009-05-28 Exxonmobil Research And Engineering Company Bimodal and multimodal dense boride cermets with low melting point binder
WO2015103670A1 (en) * 2014-01-09 2015-07-16 Bradken Uk Limited Wear member incorporating wear resistant particles and method of making same
CN105112809A (zh) * 2015-08-10 2015-12-02 霍邱县忠振耐磨材料有限公司 一种球磨机用高碳低铬耐磨钢球及其制备方法
BE1027444B1 (fr) 2020-02-11 2021-02-10 Magotteaux Int Piece d'usure composite
EP3885061A1 (en) 2020-03-27 2021-09-29 Magotteaux International S.A. Composite wear component
CN112522621A (zh) * 2020-11-30 2021-03-19 自贡硬质合金有限责任公司 一种复合耐磨金属块及制备方法
EP4155008A1 (en) 2021-09-23 2023-03-29 Magotteaux International S.A. Composite wear component
CN114472856B (zh) * 2022-04-14 2022-06-28 唐山贵金甲科技有限公司 钢渣处理破碎辊压机辊齿齿套及生产工艺

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Also Published As

Publication number Publication date
DE3315125C1 (de) 1984-11-22
EP0123961A3 (en) 1986-01-02
US4626464A (en) 1986-12-02
JPS59205446A (ja) 1984-11-21
ATE33042T1 (de) 1988-04-15
JPH066773B2 (ja) 1994-01-26
EP0123961A2 (de) 1984-11-07

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