SE8802749L - Borrkrona med haardmetallskaer - Google Patents

Borrkrona med haardmetallskaer

Info

Publication number
SE8802749L
SE8802749L SE8802749A SE8802749A SE8802749L SE 8802749 L SE8802749 L SE 8802749L SE 8802749 A SE8802749 A SE 8802749A SE 8802749 A SE8802749 A SE 8802749A SE 8802749 L SE8802749 L SE 8802749L
Authority
SE
Sweden
Prior art keywords
insert
drill
chronicle
coefficient
steel
Prior art date
Application number
SE8802749A
Other languages
Unknown language ( )
English (en)
Other versions
SE8802749D0 (sv
SE469395B (sv
Inventor
L-G Lundell
Original Assignee
Sandvik Ab
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
Publication of SE8802749D0 publication Critical patent/SE8802749D0/sv
Priority to SE8802749A priority Critical patent/SE469395B/sv
Application filed by Sandvik Ab filed Critical Sandvik Ab
Priority to AU38120/89A priority patent/AU617198B2/en
Priority to AT89850232T priority patent/ATE112013T1/de
Priority to DE68918369T priority patent/DE68918369T2/de
Priority to EP89850232A priority patent/EP0353214B1/en
Priority to FI893574A priority patent/FI89403C/sv
Priority to BR898903709A priority patent/BR8903709A/pt
Priority to CA000606801A priority patent/CA1335099C/en
Priority to JP1192810A priority patent/JPH02125086A/ja
Priority to IE244489A priority patent/IE64557B1/en
Priority to US07/386,424 priority patent/US4951762A/en
Publication of SE8802749L publication Critical patent/SE8802749L/sv
Publication of SE469395B publication Critical patent/SE469395B/sv

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/58—Chisel-type inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Earth Drilling (AREA)
  • Saccharide Compounds (AREA)
  • Peptides Or Proteins (AREA)
  • Drilling Tools (AREA)
SE8802749A 1988-07-28 1988-07-28 Borrkrona med haardmetallskaer SE469395B (sv)

Priority Applications (11)

Application Number Priority Date Filing Date Title
SE8802749A SE469395B (sv) 1988-07-28 1988-07-28 Borrkrona med haardmetallskaer
AU38120/89A AU617198B2 (en) 1988-07-28 1989-07-13 Drill bit with cemented carbide inserts
AT89850232T ATE112013T1 (de) 1988-07-28 1989-07-18 Bohrmeissel mit zementcarbideinsätzen.
DE68918369T DE68918369T2 (de) 1988-07-28 1989-07-18 Bohrmeissel mit Zementcarbideinsätzen.
EP89850232A EP0353214B1 (en) 1988-07-28 1989-07-18 Drill bit with cemented carbide inserts
FI893574A FI89403C (sv) 1988-07-28 1989-07-26 Borrskär med bitar av hårdmetall
BR898903709A BR8903709A (pt) 1988-07-28 1989-07-26 Broca
CA000606801A CA1335099C (en) 1988-07-28 1989-07-27 Drill bit with cemented carbide inserts
JP1192810A JPH02125086A (ja) 1988-07-28 1989-07-27 ドリルビット
IE244489A IE64557B1 (en) 1988-07-28 1989-07-27 Drill bit with cemented carbide inserts
US07/386,424 US4951762A (en) 1988-07-28 1989-07-28 Drill bit with cemented carbide inserts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8802749A SE469395B (sv) 1988-07-28 1988-07-28 Borrkrona med haardmetallskaer

Publications (3)

Publication Number Publication Date
SE8802749D0 SE8802749D0 (sv) 1988-07-28
SE8802749L true SE8802749L (sv) 1990-01-29
SE469395B SE469395B (sv) 1993-06-28

Family

ID=20372986

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8802749A SE469395B (sv) 1988-07-28 1988-07-28 Borrkrona med haardmetallskaer

Country Status (11)

Country Link
US (1) US4951762A (sv)
EP (1) EP0353214B1 (sv)
JP (1) JPH02125086A (sv)
AT (1) ATE112013T1 (sv)
AU (1) AU617198B2 (sv)
BR (1) BR8903709A (sv)
CA (1) CA1335099C (sv)
DE (1) DE68918369T2 (sv)
FI (1) FI89403C (sv)
IE (1) IE64557B1 (sv)
SE (1) SE469395B (sv)

Families Citing this family (115)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE469395B (sv) * 1988-07-28 1993-06-28 Sandvik Ab Borrkrona med haardmetallskaer
US5226489A (en) * 1992-01-10 1993-07-13 Kennametal Inc. Insert spacer assembly
FI935559A (sv) * 1993-06-14 1994-12-15 Robit Rocktools Ab Oy Foerfarande foer faestning av haordmetallstift i en borrkrona och en borrkrona
DE4442266A1 (de) * 1994-11-28 1996-05-30 Hilti Ag Werkzeug mit Trägerkörper und Schneidkörper
JP3633217B2 (ja) * 1996-09-25 2005-03-30 松下電工株式会社 刃物及びその製造方法
ATE218180T1 (de) * 1996-11-11 2002-06-15 Hawera Probst Gmbh Gesteinsbohrer
US5778994A (en) * 1997-07-29 1998-07-14 Dresser Industries, Inc. Claw tooth rotary bit
US5921333A (en) * 1997-08-06 1999-07-13 Naco, Inc. Casting having in-situ cast inserts and method of manufacturing
US6684968B2 (en) 2001-06-25 2004-02-03 Kennametal Inc. Roof bit body and insert assembly
EP1415065B1 (de) 2001-08-01 2005-01-12 Techmo Entwicklungs- und Vertriebs GmbH Bohrkrone
US7331410B2 (en) * 2002-07-03 2008-02-19 Smith International, Inc. Drill bit arcuate-shaped inserts with cutting edges and method of manufacture
US6823951B2 (en) 2002-07-03 2004-11-30 Smith International, Inc. Arcuate-shaped inserts for drill bits
US6997273B2 (en) * 2002-11-15 2006-02-14 Smith International, Inc. Blunt faced cutter element and enhanced drill bit and cutting structure
US20060011388A1 (en) * 2003-01-31 2006-01-19 Mohammed Boudrare Drill bit and cutter element having multiple extensions
US6929079B2 (en) 2003-02-21 2005-08-16 Smith International, Inc. Drill bit cutter element having multiple cusps
US6883624B2 (en) * 2003-01-31 2005-04-26 Smith International, Inc. Multi-lobed cutter element for drill bit
US7040424B2 (en) * 2003-03-04 2006-05-09 Smith International, Inc. Drill bit and cutter having insert clusters and method of manufacture
US8109349B2 (en) * 2006-10-26 2012-02-07 Schlumberger Technology Corporation Thick pointed superhard material
US7740414B2 (en) 2005-03-01 2010-06-22 Hall David R Milling apparatus for a paved surface
GB2427633B (en) * 2005-05-17 2007-08-15 Smith International Drill bit and method of designing a drill bit
US7757789B2 (en) * 2005-06-21 2010-07-20 Smith International, Inc. Drill bit and insert having bladed interface between substrate and coating
US7469972B2 (en) * 2006-06-16 2008-12-30 Hall David R Wear resistant tool
US7950746B2 (en) * 2006-06-16 2011-05-31 Schlumberger Technology Corporation Attack tool for degrading materials
US7568770B2 (en) 2006-06-16 2009-08-04 Hall David R Superhard composite material bonded to a steel body
US7980582B2 (en) * 2006-08-09 2011-07-19 Atc Leasing Company Llc Front tow extended saddle
US7384105B2 (en) * 2006-08-11 2008-06-10 Hall David R Attack tool
US7669674B2 (en) 2006-08-11 2010-03-02 Hall David R Degradation assembly
US7390066B2 (en) 2006-08-11 2008-06-24 Hall David R Method for providing a degradation drum
US8500209B2 (en) 2006-08-11 2013-08-06 Schlumberger Technology Corporation Manually rotatable tool
US7320505B1 (en) 2006-08-11 2008-01-22 Hall David R Attack tool
US8201892B2 (en) * 2006-08-11 2012-06-19 Hall David R Holder assembly
US9145742B2 (en) 2006-08-11 2015-09-29 Schlumberger Technology Corporation Pointed working ends on a drill bit
US8414085B2 (en) 2006-08-11 2013-04-09 Schlumberger Technology Corporation Shank assembly with a tensioned element
US8714285B2 (en) 2006-08-11 2014-05-06 Schlumberger Technology Corporation Method for drilling with a fixed bladed bit
US7992944B2 (en) * 2006-08-11 2011-08-09 Schlumberger Technology Corporation Manually rotatable tool
US8567532B2 (en) 2006-08-11 2013-10-29 Schlumberger Technology Corporation Cutting element attached to downhole fixed bladed bit at a positive rake angle
US8453497B2 (en) * 2006-08-11 2013-06-04 Schlumberger Technology Corporation Test fixture that positions a cutting element at a positive rake angle
US7946657B2 (en) * 2006-08-11 2011-05-24 Schlumberger Technology Corporation Retention for an insert
US7637574B2 (en) 2006-08-11 2009-12-29 Hall David R Pick assembly
US8590644B2 (en) 2006-08-11 2013-11-26 Schlumberger Technology Corporation Downhole drill bit
US7338135B1 (en) * 2006-08-11 2008-03-04 Hall David R Holder for a degradation assembly
US9051795B2 (en) 2006-08-11 2015-06-09 Schlumberger Technology Corporation Downhole drill bit
US7963617B2 (en) * 2006-08-11 2011-06-21 Schlumberger Technology Corporation Degradation assembly
US7413258B2 (en) * 2006-08-11 2008-08-19 Hall David R Hollow pick shank
US8123302B2 (en) * 2006-08-11 2012-02-28 Schlumberger Technology Corporation Impact tool
US7413256B2 (en) * 2006-08-11 2008-08-19 Hall David R Washer for a degradation assembly
US7744164B2 (en) * 2006-08-11 2010-06-29 Schluimberger Technology Corporation Shield of a degradation assembly
US8292372B2 (en) 2007-12-21 2012-10-23 Hall David R Retention for holder shank
US8622155B2 (en) 2006-08-11 2014-01-07 Schlumberger Technology Corporation Pointed diamond working ends on a shear bit
US8215420B2 (en) 2006-08-11 2012-07-10 Schlumberger Technology Corporation Thermally stable pointed diamond with increased impact resistance
US7387345B2 (en) * 2006-08-11 2008-06-17 Hall David R Lubricating drum
US7600823B2 (en) * 2006-08-11 2009-10-13 Hall David R Pick assembly
US7469971B2 (en) 2006-08-11 2008-12-30 Hall David R Lubricated pick
US7419224B2 (en) * 2006-08-11 2008-09-02 Hall David R Sleeve in a degradation assembly
US7871133B2 (en) 2006-08-11 2011-01-18 Schlumberger Technology Corporation Locking fixture
US8449040B2 (en) 2006-08-11 2013-05-28 David R. Hall Shank for an attack tool
US7997661B2 (en) * 2006-08-11 2011-08-16 Schlumberger Technology Corporation Tapered bore in a pick
US8485609B2 (en) * 2006-08-11 2013-07-16 Schlumberger Technology Corporation Impact tool
US7464993B2 (en) * 2006-08-11 2008-12-16 Hall David R Attack tool
US7410221B2 (en) * 2006-08-11 2008-08-12 Hall David R Retainer sleeve in a degradation assembly
US7445294B2 (en) * 2006-08-11 2008-11-04 Hall David R Attack tool
US7661765B2 (en) 2006-08-11 2010-02-16 Hall David R Braze thickness control
US8136887B2 (en) 2006-08-11 2012-03-20 Schlumberger Technology Corporation Non-rotating pick with a pressed in carbide segment
US7396086B1 (en) 2007-03-15 2008-07-08 Hall David R Press-fit pick
US7648210B2 (en) 2006-08-11 2010-01-19 Hall David R Pick with an interlocked bolster
US8500210B2 (en) 2006-08-11 2013-08-06 Schlumberger Technology Corporation Resilient pick shank
US8007051B2 (en) * 2006-08-11 2011-08-30 Schlumberger Technology Corporation Shank assembly
US7743855B2 (en) * 2006-09-05 2010-06-29 Smith International, Inc. Drill bit with cutter element having multifaceted, slanted top cutting surface
US9068410B2 (en) 2006-10-26 2015-06-30 Schlumberger Technology Corporation Dense diamond body
US8960337B2 (en) 2006-10-26 2015-02-24 Schlumberger Technology Corporation High impact resistant tool with an apex width between a first and second transitions
US8403595B2 (en) 2006-12-01 2013-03-26 David R. Hall Plurality of liquid jet nozzles and a blower mechanism that are directed into a milling chamber
US7976239B2 (en) 2006-12-01 2011-07-12 Hall David R End of a moldboard positioned proximate a milling drum
US8485756B2 (en) 2006-12-01 2013-07-16 David R. Hall Heated liquid nozzles incorporated into a moldboard
US7523794B2 (en) * 2006-12-18 2009-04-28 Hall David R Wear resistant assembly
US7631709B2 (en) 2007-01-03 2009-12-15 Smith International, Inc. Drill bit and cutter element having chisel crest with protruding pilot portion
US8205692B2 (en) * 2007-01-03 2012-06-26 Smith International, Inc. Rock bit and inserts with a chisel crest having a broadened region
US7798258B2 (en) * 2007-01-03 2010-09-21 Smith International, Inc. Drill bit with cutter element having crossing chisel crests
US7686106B2 (en) * 2007-01-03 2010-03-30 Smith International, Inc. Rock bit and inserts with wear relief grooves
US9051794B2 (en) * 2007-04-12 2015-06-09 Schlumberger Technology Corporation High impact shearing element
US7594703B2 (en) * 2007-05-14 2009-09-29 Hall David R Pick with a reentrant
US7926883B2 (en) 2007-05-15 2011-04-19 Schlumberger Technology Corporation Spring loaded pick
US8038223B2 (en) * 2007-09-07 2011-10-18 Schlumberger Technology Corporation Pick with carbide cap
US7832808B2 (en) 2007-10-30 2010-11-16 Hall David R Tool holder sleeve
US20110254349A1 (en) 2007-12-21 2011-10-20 Hall David R Resilent Connection between a Pick Shank and Block
US8540037B2 (en) 2008-04-30 2013-09-24 Schlumberger Technology Corporation Layered polycrystalline diamond
US7628233B1 (en) 2008-07-23 2009-12-08 Hall David R Carbide bolster
US8702357B2 (en) 2009-02-10 2014-04-22 Kennametal Inc. Multi-piece drill head and drill including the same
US8827606B2 (en) 2009-02-10 2014-09-09 Kennametal Inc. Multi-piece drill head and drill including the same
US8061457B2 (en) 2009-02-17 2011-11-22 Schlumberger Technology Corporation Chamfered pointed enhanced diamond insert
US20100242375A1 (en) * 2009-03-30 2010-09-30 Hall David R Double Sintered Thermally Stable Polycrystalline Diamond Cutting Elements
US8322796B2 (en) * 2009-04-16 2012-12-04 Schlumberger Technology Corporation Seal with contact element for pick shield
US8701799B2 (en) * 2009-04-29 2014-04-22 Schlumberger Technology Corporation Drill bit cutter pocket restitution
WO2010144837A2 (en) * 2009-06-12 2010-12-16 Smith International, Inc. Cutter assemblies, downhole tools incorporating such cutter assemblies and methods of making such downhole tools
US20100326740A1 (en) * 2009-06-26 2010-12-30 Hall David R Bonded Assembly Having Low Residual Stress
US9539652B2 (en) 2010-04-30 2017-01-10 Kennametal Inc. Rotary cutting tool having PCD cutting tip
US8262168B2 (en) 2010-09-22 2012-09-11 Hall David R Multiple milling drums secured to the underside of a single milling machine
US8261471B2 (en) 2010-06-30 2012-09-11 Hall David R Continuously adjusting resultant force in an excavating assembly
US8449039B2 (en) 2010-08-16 2013-05-28 David R. Hall Pick assembly with integrated piston
GB201014059D0 (en) * 2010-08-24 2010-10-06 Element Six Production Pty Ltd Wear part
US8607899B2 (en) 2011-02-18 2013-12-17 National Oilwell Varco, L.P. Rock bit and cutter teeth geometries
US8728382B2 (en) 2011-03-29 2014-05-20 David R. Hall Forming a polycrystalline ceramic in multiple sintering phases
US9739097B2 (en) 2011-04-26 2017-08-22 Smith International, Inc. Polycrystalline diamond compact cutters with conic shaped end
CA2834357A1 (en) 2011-04-26 2012-11-01 Smith International, Inc. Methods of attaching rolling cutters in fixed cutter bits using sleeve, compression spring, and/or pin(s)/ball(s)
US9062505B2 (en) 2011-06-22 2015-06-23 Us Synthetic Corporation Method for laser cutting polycrystalline diamond structures
US8950519B2 (en) 2011-05-26 2015-02-10 Us Synthetic Corporation Polycrystalline diamond compacts with partitioned substrate, polycrystalline diamond table, or both
US8863864B1 (en) 2011-05-26 2014-10-21 Us Synthetic Corporation Liquid-metal-embrittlement resistant superabrasive compact, and related drill bits and methods
US9297411B2 (en) 2011-05-26 2016-03-29 Us Synthetic Corporation Bearing assemblies, apparatuses, and motor assemblies using the same
US8668275B2 (en) 2011-07-06 2014-03-11 David R. Hall Pick assembly with a contiguous spinal region
US8926237B2 (en) 2011-07-11 2015-01-06 Kennametal Inc. Multi-piece twist drill head and twist drill including the same
US20140183798A1 (en) 2012-12-28 2014-07-03 Smith International, Inc. Manufacture of cutting elements having lobes
US10237983B2 (en) * 2014-12-23 2019-03-19 Sanmina Corporation Method for forming hole plug
RU2576678C1 (ru) * 2015-01-15 2016-03-10 Николай Митрофанович Панин Резец для вращательного бурения шпуров
WO2016184956A1 (en) 2015-05-21 2016-11-24 Sandvik Intellectual Property Ab A method of producing a tool for cutting, drilling or crushing of solid material, and such a tool
RU2631513C2 (ru) * 2015-12-21 2017-09-25 Федеральное государственное бюджетное учреждение науки Институт горного дела Севера им. Н.В. Черского Сибирского отделения Российской академии наук Способ эксплуатации прямоугольных двухслойных пластин в кольцевых буровых коронках
CA3011347A1 (en) 2016-01-13 2017-07-20 Schlumberger Canada Limited Angled chisel insert

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB664983A (en) * 1949-08-24 1952-01-16 Brian Exley Berry Improvements in and relating to tool tipping
GB683194A (en) * 1950-05-06 1952-11-26 Sandvikens Jernverks Ab Improvements in drill bits
US3294186A (en) * 1964-06-22 1966-12-27 Tartan Ind Inc Rock bits and methods of making the same
US3528465A (en) * 1965-06-01 1970-09-15 Herbert A Omley Saw with ceramic cutting bodies
AU423189B2 (en) * 1967-03-06 1972-04-12 The Titan Manufacturing Company Proprietary Limited Improvements in drills and drill bits
US4683781A (en) * 1984-09-27 1987-08-04 Smith International, Inc. Cast steel rock bit cutter cones having metallurgically bonded cutter inserts, and process for making the same
US4694918A (en) * 1985-04-29 1987-09-22 Smith International, Inc. Rock bit with diamond tip inserts
SE459679B (sv) * 1985-09-02 1989-07-24 Santrade Ltd Stift foer bergborrkrona
US4764255A (en) * 1987-03-13 1988-08-16 Sandvik Ab Cemented carbide tool
US4817742A (en) * 1987-08-11 1989-04-04 Kennametal Inc. Butterfly-type shim having perforations in mid-section thereof and double sandwich braze joint produced therewith
US4821819A (en) * 1987-08-11 1989-04-18 Kennametal Inc. Annular shim for construction bit having multiple perforations for stress relief
SE469395B (sv) * 1988-07-28 1993-06-28 Sandvik Ab Borrkrona med haardmetallskaer

Also Published As

Publication number Publication date
SE8802749D0 (sv) 1988-07-28
JPH02125086A (ja) 1990-05-14
DE68918369T2 (de) 1995-03-02
FI893574A (fi) 1990-01-29
ATE112013T1 (de) 1994-10-15
EP0353214A3 (en) 1991-01-30
FI89403C (sv) 1993-09-27
IE64557B1 (en) 1995-08-23
FI893574A0 (fi) 1989-07-26
DE68918369D1 (de) 1994-10-27
FI89403B (fi) 1993-06-15
AU3812089A (en) 1990-02-01
SE469395B (sv) 1993-06-28
IE892444L (en) 1990-01-28
EP0353214B1 (en) 1994-09-21
EP0353214A2 (en) 1990-01-31
AU617198B2 (en) 1991-11-21
CA1335099C (en) 1995-04-04
US4951762A (en) 1990-08-28
BR8903709A (pt) 1990-03-20

Similar Documents

Publication Publication Date Title
SE8802749L (sv) Borrkrona med haardmetallskaer
DE69406046D1 (de) Sägekettenschneidglied
Billman et al. Machining with Al2O3‐Sic Whisker Cutting Tools
IE881909L (en) Abrasive polycrystalline diamond body
DE69411163D1 (de) Schneidewerkzeuge auf borid basis, gruppe iv b
US5271696A (en) Tool bit for machining materials
ATE48552T1 (de) Hartgeloetete zusammengesetzte kompakte werkzeuge.
GB1535438A (en) Impact tool
GB1373460A (en) Cutting tools using reground carbide cutting tips
EP0189677A3 (en) Sintered titanium carbo-nitride ceramics
SU1263837A1 (ru) Резец дл горных машин
Tönshoff et al. Machining of steel and cast iron using silicon nitride tools
JPS55125913A (en) Brazed drill of super hard alloy chip having covering layer
Yazu Recent Status of Sintered Boron Nitride Tools
Matsuoka et al. Fundamental research on hard materials for hobs.
Katsarov et al. Study of Cutting Properties of Titanium Carbide and Titanium Carbonitride Low-Tungsten Hard Alloys
Senchenkova et al. Wear of Hard Alloy Cutting Tools During Lathe Turning of Heat-Treated Alloy Steels of Different Hardnesses
Ai et al. Study on Machining Hardened Steels With Ceramic Tools
Redington Spiral Fluted Indexable Drill Solves Tough Heat-Treated Stainless Steel Job
D'Errico Properties of cermets for continuous and interrupted dry cutting
KAUPPINEN et al. High-speed machining of materials with low machinability
IT1065765B (it) Utensile a percussione,o per lavori di demolizione
Darlewski et al. Technological and Economical Aspects of Finishing of the Hard Toothed Gears With the Carbide Tipped Milling Hobs
JPS6442570A (en) Wear resistant coating film
Karasev et al. Use of Non-Tungsten Hard Alloys and Cutting-Tool Ceramics in Machining Metals

Legal Events

Date Code Title Description
NAL Patent in force

Ref document number: 8802749-5

Format of ref document f/p: F

NUG Patent has lapsed

Ref document number: 8802749-5

Format of ref document f/p: F