DE3432995A1 - MINING CHISEL - Google Patents

MINING CHISEL

Info

Publication number
DE3432995A1
DE3432995A1 DE19843432995 DE3432995A DE3432995A1 DE 3432995 A1 DE3432995 A1 DE 3432995A1 DE 19843432995 DE19843432995 DE 19843432995 DE 3432995 A DE3432995 A DE 3432995A DE 3432995 A1 DE3432995 A1 DE 3432995A1
Authority
DE
Germany
Prior art keywords
chisel
mining
tip
mining chisel
hard 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.)
Withdrawn
Application number
DE19843432995
Other languages
German (de)
Inventor
Roy Sandown Sandton Cooper
Frederick George Farramere Benoni Holden
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.)
Boart International Ltd
Original Assignee
Boart International Ltd
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 Boart International Ltd filed Critical Boart International Ltd
Publication of DE3432995A1 publication Critical patent/DE3432995A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C35/00Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/18Mining picks; Holders therefor
    • E21C35/183Mining picks; Holders therefor with inserts or layers of wear-resisting material
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00Drill bits
    • E21B10/46Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/56Button-type inserts
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C35/00Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/18Mining picks; Holders therefor
    • E21C35/183Mining picks; Holders therefor with inserts or layers of wear-resisting material
    • E21C35/1835Chemical composition or specific material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Earth Drilling (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Description

Beschreibungdescription

Die Erfindung bezieht sich auf Bergbaumeißel, wie sie bei Bergbaumaschinen für Kohle und andere Materialien und bei Maschinen zum Straßenplanieren verwendet werden.The invention relates to mining bits as used in mining machines for coal and other materials and in Machines used for road grading.

Im allgemeinen weist ein Meißel eines derartigen Typs einen länglichen Körper auf, welcher mit einer Spitze versehen ist, die den Schneidvorgang bewirkt.In general, a chisel of such a type has an elongated body which is tipped that causes the cutting process.

In dem südafrikanischen Patent Nr. 80/7566 wurde bereitsIn the South African patent no. 80/7566 was already

vorgeschlagen,-den Schneideabschnitt der Spitze aus einem Diamantpreßkörper zu bilden. Bei diesem vorbekannten Vorschlag ist der Schneidmeißel aus drei Teilen ausgebil-K det, die aneinander befestigt sind: der Spitze, einerProposed to form the cutting portion of the tip from a diamond compact. In this prior art proposed by the cutting bit of three parts trained K is det, which are attached to each other: the top, a

Hartmetallegierung, wie z.B. Stellit, welche die Spitze trägt, und einem Hauptkörper der Spitze, welcher aus Stahl gefertigt ist.A hard metal alloy such as stellite which supports the tip and a main body of the tip which is made of Steel is made.

Es wurden bereits Spitzen aus gebundenem Wolframkarbid (cemented tungsten carbide) vorgeschlagen, so etwa in dem US-Patent 36 50 565, welche in Körpern aus Stahl eingebettet sind.Cemented tungsten carbide tips have been proposed, such as in the US Pat. No. 3,650,565 which are embedded in bodies made of steel.

Es ist ein Ziel der Erfindung, die Verwendung von Diamantpreßkörpern bei Bergbaumeißeln zu verbessern.It is an object of the invention to use diamond compacts to improve mining chisels.

Ein erfindungsgemäßer Bergbaumeißel weist einen länglichen Körper aus Stahl mit einem Diamantpreßkörper als Schneidspitze auf, wobei die Spitze von einem Material getragen wird, welches härter ist als der Körper und zeichnet sich dadurch aus, daß das Trägermaterial aus gebundenem bzw. gesintertem Metall (cemented hard metal) besteht, bevorzugterweise aus Wolframkarbid, und daß der Preßkör-A mining chisel according to the invention has an elongated body made of steel with a diamond compact as Cutting point on, the point being carried by a material that is harder than the body and draws is characterized by the fact that the carrier material consists of bonded or sintered metal (cemented hard metal), preferably made of tungsten carbide, and that the pressed body

__ per der Länge nach in einer Aussparung in dem Hartmetall oü__ lengthwise in a recess in the hard metal oü

eingebettet ist.is embedded.

Im folgenden wird die Erfindung anhand zweier Ausführungsbeispiele in Verbindung mit der Zeichnung beschrieben. Dabei zeigt:In the following, the invention is described using two exemplary embodiments in conjunction with the drawing. It shows:

Fig. 1 eine erfindungsgemäße Meißelspitze in einer ersten Ausführungsform und1 shows a chisel tip according to the invention in a first embodiment and

Fig. 2 eine zweite Ausführungsform einer erfindungsgemäßenFig. 2 shows a second embodiment of an inventive

Meißelspitze.
10
Chisel point.
10

In Fig. 1 ist eine Meißelspitze dargestellt, wie sie in dem US-Patent Nr. 40 84 856 beschrieben ist, welche jedoch gemäß der Lehre der vorliegenden Erfindung verändert wurde. Die Meißelspitze weist einen Körper 10 auf, welcher entlang einer Linie 11 mit einem gebundenen (cemented) Wolframkarbidteil hartverlötet ist. Das vordere Ende des Teils 12 ist mit einem zylindrischen Sackloch ausgebildet, in welchem ein zylindrischer Diamantpreßkörper 13 durch Hartlöten oder Auflagetränkung befestigt ist.1 shows a chisel point as described in US Pat. No. 4,084,856, but which has been modified in accordance with the teachings of the present invention. The chisel tip has a body 10 which runs along a line 11 with a bonded (cemented) tungsten carbide part is brazed. The front end of the part 12 is with a cylindrical blind hole formed in which a cylindrical diamond compact 13 by brazing or Pad impregnation is attached.

In Fig. 2 ist ein Meißel des Typs dargestellt, wie er in dem britischen Patent Nr. 11 70 979 beschrieben ist. Der Meißel weist einen Körper 20 auf, an welchem ein. Wolframkarbidabschnitt 21 befestigt ist, der einen zylindrischen Diamantpreßkörper 23 trägt.Referring to Figure 2, there is shown a chisel of the type described in British Patent No. 11,70979. Of the Chisel has a body 20 on which a. Tungsten carbide section 21 is attached, which has a cylindrical Diamond compact 23 carries.

In der Praxis nützt sich der Teil 12 und der Abschnitt 21 stufenweise mit dem Preßkörper 13 oder 23 ab.In practice, the part 12 and the section 21 wear out gradually with the pressed body 13 or 23.

Claims (2)

25 Patentansprüche25 claims 1. Bergbaumeißel mit einem länglichen Stahlkörper mit einem Diamantpreßkörper als Schneidspitze, dadurch gekenn'zeichnet, daß die Spitze von einem Material getragen wird, welches härter ist als das Material des Körpers (10,20), daß das Trägermaterial ein Sinterhartmetall ist und daß der Preßkörper (13,23) der Länge nach in einer Aussparung in dem Hartmetall (12,21) eingebettet ist.1. Mining chisel with an elongated steel body with a diamond compact as a cutting tip, characterized in that the tip is supported by a material which is harder than the material of the body (10, 20) that the carrier material is a cemented carbide and that the pressed body (13, 23) is longitudinally in a recess in the hard metal (12,21) is embedded. g G 2. Bergbaumeißel nach Anspruch 1, dadurch gekennzeichnet , daß das Hartmetall Sinterwolframkarbid ist.2. mining chisel according to claim 1, characterized that the hard metal is cemented tungsten carbide. Jo 3- Bergbaumeißel nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß der Preßkörper eine zylindrische Form aufweist. Jo 3 mining chisel according to one of Claims 1 or 2, characterized in that the pressed body has a cylindrical shape.
DE19843432995 1983-09-15 1984-09-07 MINING CHISEL Withdrawn DE3432995A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA836855 1983-09-15

Publications (1)

Publication Number Publication Date
DE3432995A1 true DE3432995A1 (en) 1985-04-04

Family

ID=25576912

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19843432995 Withdrawn DE3432995A1 (en) 1983-09-15 1984-09-07 MINING CHISEL

Country Status (7)

Country Link
AU (1) AU3290184A (en)
BE (1) BE900582A (en)
DE (1) DE3432995A1 (en)
FR (1) FR2553146A1 (en)
GB (1) GB2148353B (en)
IT (1) IT1196248B (en)
SE (1) SE8404494L (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0235455A2 (en) * 1986-02-13 1987-09-09 Smith International, Inc. Percussion rock bit
WO2010129977A3 (en) * 2009-05-14 2011-04-28 Sandvik Mining And Construction G.M.B.H. Cutting tool for a mining machine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA846759B (en) * 1983-09-05 1985-02-27
AU577958B2 (en) * 1985-08-22 1988-10-06 De Beers Industrial Diamond Division (Proprietary) Limited Abrasive compact
US4764255A (en) * 1987-03-13 1988-08-16 Sandvik Ab Cemented carbide tool
CN104712336A (en) * 2015-03-26 2015-06-17 河南四方达超硬材料股份有限公司 Composite cutting tooth made of polycrystalline diamond and hard alloy

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE639335A (en) *
GB156521A (en) * 1914-10-09 1922-04-05 Signal Gmbh Transmitting arrangement for submarine sound signals
GB1114156A (en) * 1964-09-01 1968-05-15 Coal Industry Patents Ltd Improvements in or relating to cutter picks
DE2610734A1 (en) * 1976-03-13 1977-09-22 Krupp Gmbh TOOL EQUIPPED WITH CUTTING PINS AND DRIVE PINS FOR REMOVING ROCKS AND MINERALS
DE2719330C3 (en) * 1977-04-30 1984-01-05 Christensen, Inc., 84115 Salt Lake City, Utah Rotary drill bit
CS202186B1 (en) * 1977-11-29 1980-12-31 Jaroslav Vasek Knite incl. the knife holder determined for disconnectig the materials part. rocks
GB2041427B (en) * 1978-11-01 1982-08-18 Nl Industries Inc Insert for tool wear surfaces and method of manufacture
ZA806249B (en) * 1979-11-19 1982-01-27 Gen Electric Compacts for diamond drill and saw applications
DE3114749C2 (en) * 1981-04-11 1983-10-27 Christensen, Inc., 84115 Salt Lake City, Utah Wedge-shaped cutting link for rotary drill bits for deep drilling
NL8203750A (en) * 1981-10-29 1983-05-16 Smith International REMOVAL DEVICE FOR DIAMOND CUTTING DEVICE FOR SCRAP CHISELS.
CA1194857A (en) * 1982-02-20 1985-10-08 Nl Industries, Inc. Rotary drilling bits
EP0103391A3 (en) * 1982-08-06 1985-06-05 Huddy Diamond Crown Setting Company (Proprietary) Limited Cutter inserts for picks, picks and pick blanks
US4538690A (en) * 1983-02-22 1985-09-03 Nl Industries, Inc. PDC cutter and bit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0235455A2 (en) * 1986-02-13 1987-09-09 Smith International, Inc. Percussion rock bit
EP0235455A3 (en) * 1986-02-13 1988-11-17 Smith International, Inc. Percussion rock bit
WO2010129977A3 (en) * 2009-05-14 2011-04-28 Sandvik Mining And Construction G.M.B.H. Cutting tool for a mining machine

Also Published As

Publication number Publication date
SE8404494D0 (en) 1984-09-07
IT1196248B (en) 1988-11-16
AU3290184A (en) 1985-03-21
GB2148353A (en) 1985-05-30
BE900582A (en) 1985-01-02
GB2148353B (en) 1986-03-05
SE8404494L (en) 1985-03-16
GB8422564D0 (en) 1984-10-10
IT8422585A0 (en) 1984-09-10
FR2553146A1 (en) 1985-04-12

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Legal Events

Date Code Title Description
8139 Disposal/non-payment of the annual fee