US3316073A - Process for making metal bonded diamond tools employing spherical pellets of metallic powder-coated diamond grits - Google Patents

Process for making metal bonded diamond tools employing spherical pellets of metallic powder-coated diamond grits Download PDF

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Publication number
US3316073A
US3316073A US128895A US12889561A US3316073A US 3316073 A US3316073 A US 3316073A US 128895 A US128895 A US 128895A US 12889561 A US12889561 A US 12889561A US 3316073 A US3316073 A US 3316073A
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United States
Prior art keywords
abrasive
pellets
diamond
spherical pellets
metal bonded
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 - Lifetime
Application number
US128895A
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English (en)
Inventor
John G Kelso
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.)
Saint Gobain Abrasives Inc
Original Assignee
Norton Co
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Filing date
Publication date
Application filed by Norton Co filed Critical Norton Co
Priority to US128895A priority Critical patent/US3316073A/en
Priority to GB28729/62A priority patent/GB1014295A/en
Priority to SE8456/62A priority patent/SE305168B/xx
Priority to DE19621427585 priority patent/DE1427585A1/de
Priority to CH922262A priority patent/CH410664A/de
Application granted granted Critical
Publication of US3316073A publication Critical patent/US3316073A/en
Priority to NL6709790A priority patent/NL6709790A/xx
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
    • B24D3/06—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
    • 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
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12181—Composite powder [e.g., coated, etc.]

Definitions

  • the invention has particular application to the manufacture of abrasive tools whereon relatively large size hard abrasive particles are widely spaced apart in the bonding medium. Where the number of abrasive particles is small relative to the surface over which or volume throughout which the particles are distributed, conventional methods of mechanically mixing the abrasive particles with the bond prior to the formation of the desired shape have resulted in tools having an undesirable nonuniformity of distribution of the abrasive particles.
  • Another object of the invention is to produce spherical, uniform sized bodies useful in forming abrasive bodies comprising a central abrasive particle surrounded by a matrix forming material.
  • Still another object of the invention is to improve the distribution of abrasive particles in an abrasive tool and at the same time improve the flow characteristics of the tool forming materials for introduction into the mold.
  • the above objects and other objects which will be apparent to those skilled in the art are achieved in this invention by the use of spherical pellets from which the grinding shapes are formed.
  • the pellets consist of a central particle of primary abrasive material of grit size 60 or larger, surrounded by a particulate, self-sustaining mass of matrix forming material which may also include secondary abrasive particles of grit 80 or finer although best results are achieved without addition of finer abrasive material.
  • the matrix material contains a sinterable material which upon application of heat will weld together to form a permament strong bond for the abrasive particles.
  • a temporary binder may be employed to make the pellets self-sustaining and strong enough to withstand handling prior to formation into a finished fired product. Such a temporary binder is conveniently an organic material such as dextrine or shellac.
  • a mold of the desired shape is filled with a quantity of the abrasive containing pellets of substantially uniform size.
  • Pressure in the order of from 20 to tons per square inch is then applied to form a compacted grinding shape having primary abrasive grains spaced uniformly throughout the volume of the body.
  • the body is then subjected to heat to sinter the matrix.
  • the particular temperature employed and the conditions of firing will depend upon the particular abrasive and matrix materials used.
  • FIGURE 1 shows, somewhat schematically, one meth 0d of forming the pellets of the invention.
  • FIGURE 2 shows a cross section of a mold containing spherical pellets ready to be formed into a grinding shape.
  • the starting material 10 consisting only of abrasive particles, is placed in a rotating round pan 20. If desired an organic surfaceactive wetting agent may be added to the abrasive particles.
  • the axis of rotation of the pan is inclined at about 45 to the horizontal.
  • the angle of inclination and the speed 0 of rotation are selected so that the material in the pan is rolling over itself and is not held to the walls of the pan by centrifugal force.
  • the powdered matrix material and temporary binder mixture 12 is added to the starting material at a controlled feed rate and a solvent 13 for the temporary binder may be added.
  • the powder tends to build up, as a snowball does, on the abrasive grain and t as more material is added the thickness of the coating is increased.
  • the feed rate of the ingredients is controlled so that each pellet grows from one abrasive grain and pellets are not agglomerated to each other.
  • the pellets are remove and are ready for use in the mold.
  • the pellets are dried before use.
  • the abrasive particles are uniformly spaced from each other. Under molding pressure, applied by member 21, the ball is broken down and normal compaction can take place.
  • Example I Preparation of Pellets
  • a mixing bowl eight inches in diameter and three inches deep was employed.
  • the axis of rotation of the bowl was inclined at 47 to horizontal and the speed of rotation was 52 r.p.m.
  • Aluminum oxide grain, 36 grit was used as the starting seed.
  • the metal powder bond was a 50/50 by weight blend of tungsten carbide particle size 1.5 microns and cobalt powder of 1.5 microns maximum average particle size.
  • About 1% of paraffin, by weight. was included.
  • the mixed powders were sifted slowly onto the abrasive in the rotating bowl while a fine spray of water was directed onto the abrasive.
  • the rate of addition of water was kept low enough so that the abrasive grains did not adhere to the walls of the bowl or to each other.
  • the rate of addition of the metal powder and dextrine mixture was controlled so that the tumbling action of the abrasive was not impaired.
  • the process was stopped when a large number of particles larger than 16 mesh had been formed. After drying, the pellets were screened. The results were:
  • Example II In a second test a bowl with a flat bottom, 5%" diameter and 1 /2" deep was used. The pellets were formed in the manner described in Example I and the following results were obtained:
  • test wheels were made.
  • the wheel was made with 36-grit diamond, 2.06% by weight, and 50% WC50% Co powder as mentioned above.
  • the bowl was rotating at 52 r.p.m. and inclined at 47.
  • Daxad #11 Daxad powder, Dewey & Almy Chemical Co., 62 Whittemore Ave., Cambridge 40, Mass.
  • Pellets were generated as in the previous cases except that the pellets were screened to separate out those which were between and IZ-mesh size.
  • the minus-lZ-mesh particles were put back in the 4 bowl for further growth.
  • the selected minus-l0 plus-l2 mesh particles were pressed into a grinding wheel.
  • a second test wheel was made from pellets which were prepared by mixing the correct ratio of ingredients but without any regard to the size range of particles produced. Bowl operating conditions were as above. The random sized pellets were molded into a grinding wheel.
  • the process of this invention is applicable to primary abrasive grains, preferably diamond, of 60-grit and coarser, up to by volume.
  • the secondary abrasive grain is -grit or coarser the secondary abrasive is mixed with the primary abrasive in the pelletizing process.
  • the secondary abrasive is 80-grit and finer, it is mixed with the bond material and added as a owder constituent.
  • Wheels or other grinding shapes may be formed from the pellets by any of the known methods of the art applicable to the particular bond material and abrasive material employed in making the pellets.
  • Hot pressing may be employed to form metal bonded finished shapes or cold pressing followed by sintering in an oven, in an inertat mospherewhen necessary, may be employed.
  • the latte; methods are. particularly suited to forming metal bonded (sintered) diamond wheels;
  • Typical metal powders useful in this invention have particle sizes from 1 to 12 microns and may bQ CQbillt, mixtures of tungsten carbide and cobalt, steel mixtures, and copper and tin mixtures. US.
  • Patent 2,737,454 to Dance gives a complete description, for example, of how grinding elements are prepared when a copper-tin bond powder is employed.
  • a copper content of 81.4 wt. percent and tin content of 18.6 wt. percent, as disclosed in the Dance patent is suitable.
  • the preformed pellets such as selected minus-l0 plus-l2 mesh are placed in the mold of FIGURE 2 and pressed, as taught in the Danec patent, at 35 tons per square inch.
  • the green" shape is then fired for approximately 5 hours at 600 C. in an atmosphere of dry oil pumped nitrogen.
  • the rise during furnacing to the 5-hour soak at 600 C. is preferably at a rate of about C. per hour.
  • With different metal bonds the same technique may be employed except that the sintering temperatures will vary depending on the bond employed. r
  • abrasive particles In order to produce a good distribution of primary abrasive particles in the finished abrasive wheel or tool, it is not necessary to employ pellets of all the same size. In fact, where the abrasive particles are widely spaced it is sometimes desirable to employ a mixture of pellets of more than one size to avoid too definite a pattern in the abrasive spacing. For example, in making a diamond cutoff wheel segment, I may employ a mixture of equal parts by weight of IO-mesh pellets each with a 24-grit diamond center and 12-mesh pellets each with a 36-grit diamond center.
  • a method of forming bonded abrasive shapes comprising forming a plurality of generally spherical pellets consisting of a single central primary diamond particle surrounded by a sinterable particulate mass of powdered metallic bonding material adapted to weld together to form a bond upon the application of heat, and forming said plurality of generally spherical pellets to shape by the application of pressure to break down the spherical shape and compact the pellets and heat to sinter the bond.
  • a mass of spherical pellets for making a diamond abrasive tool each pellet consisting of an individual diamond abrasive grain of grit 60 or coarser surrounded by a temporarily self-sustaining powdered unsintered tungsten carbide-cobalt powder, the bulk of the pellets 5 6 having a bond volume to abrasive volume of at least 9 2,947,124 8/1960 Madigan et a1. 51308 2,986,455 5/1961 Sandmeyer 51296 References Cited by the Examiner FOREIGN PATENTS UNITED STATES PATENTS 5 594,400 3/1960 Canada.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Adornments (AREA)
US128895A 1961-08-02 1961-08-02 Process for making metal bonded diamond tools employing spherical pellets of metallic powder-coated diamond grits Expired - Lifetime US3316073A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US128895A US3316073A (en) 1961-08-02 1961-08-02 Process for making metal bonded diamond tools employing spherical pellets of metallic powder-coated diamond grits
GB28729/62A GB1014295A (en) 1961-08-02 1962-07-26 Improvements in or relating to shaped abrasive articles
SE8456/62A SE305168B (de) 1961-08-02 1962-08-01
DE19621427585 DE1427585A1 (de) 1961-08-02 1962-08-01 Verbesserungen in der Herstellung geformter Schleifartikel
CH922262A CH410664A (de) 1961-08-02 1962-08-02 Verfahren zur Herstellung geformter Schleifgegenstände
NL6709790A NL6709790A (de) 1961-08-02 1967-07-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US128895A US3316073A (en) 1961-08-02 1961-08-02 Process for making metal bonded diamond tools employing spherical pellets of metallic powder-coated diamond grits

Publications (1)

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US3316073A true US3316073A (en) 1967-04-25

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US (1) US3316073A (de)
CH (1) CH410664A (de)
DE (1) DE1427585A1 (de)
GB (1) GB1014295A (de)
NL (1) NL6709790A (de)
SE (1) SE305168B (de)

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3402035A (en) * 1965-12-07 1968-09-17 Thomas J. Martin Abrasive wheel having a metal coated graphite lubricant therein
US3510440A (en) * 1964-12-01 1970-05-05 British Ropes Ltd Corrosion preventing compositions
US3596649A (en) * 1968-04-04 1971-08-03 J K Smit & Sons Inc Abrasive tool and process of manufacture
US3779726A (en) * 1969-03-07 1973-12-18 Norton Co A method of making a metal impregnated grinding tool
DE2348338A1 (de) * 1973-09-26 1975-04-03 Norddeutsche Schleifmittel Ind Flaechiges schleifmittel
US3879175A (en) * 1971-06-24 1975-04-22 De Beers Ind Diamond Bearing bodies and methods of forming bearing surfaces
US3879901A (en) * 1970-06-24 1975-04-29 De Beers Ind Diamond Metal-coated diamonds in a metal alloy matrix
US3928949A (en) * 1973-09-26 1975-12-30 Norddeutsche Schleifmittel Ind Hollow body grinding materials
US4011064A (en) * 1975-07-28 1977-03-08 General Electric Company Modifying the surface of cubic boron nitride particles
US4062660A (en) * 1973-04-16 1977-12-13 Nicholas Michael G Method of producing nickel coated diamond particles
US4063907A (en) * 1975-07-28 1977-12-20 General Electric Company Modifying the surface of diamond particles
USRE29808E (en) * 1973-09-26 1978-10-24 Norddeutsche Schleifmittel-Indutrie Christiansen & Co. Hollow body grinding materials
US4231762A (en) * 1977-05-04 1980-11-04 Sumitomo Electric Industries, Ltd. Method of producing a sintered diamond compact
EP0046374A3 (en) * 1980-08-14 1982-06-23 De Beers Industrial Diamond Division (Proprietary) Limited Abrasive product
US4781754A (en) * 1987-09-24 1988-11-01 General Motors Corporation Rapid solidification of plasma sprayed magnetic alloys
EP0352811A1 (de) * 1988-07-29 1990-01-31 Norton Company Heizbeständiges Produkt und Verfahren zu dessen Herstellung
US5151107A (en) * 1988-07-29 1992-09-29 Norton Company Cemented and cemented/sintered superabrasive polycrystalline bodies and methods of manufacture thereof
EP0533444A2 (de) 1991-09-20 1993-03-24 General Electric Company Verfahren zur Herstellung eines Sägeblatts
CN100358669C (zh) * 2003-05-12 2008-01-02 宋健民 披覆焊料的钻石或立方氮化硼及其集结体及其制法
CN100365148C (zh) * 2002-10-29 2008-01-30 六号元素(控股)公司 复合材料
WO2008018048A3 (en) * 2006-08-11 2008-04-03 Element Six Ltd Dual stage process for the rapid formation of pellets
WO2009061265A1 (en) * 2007-11-08 2009-05-14 Alfa Laval Corporate Ab A diamond metal composite
US20090152015A1 (en) * 2006-06-16 2009-06-18 Us Synthetic Corporation Superabrasive materials and compacts, methods of fabricating same, and applications using same
US20100122853A1 (en) * 2007-02-23 2010-05-20 Baker Hughes Incorporated Encapsulated diamond particles, materials and impregnated diamond earth-boring bits including such particles, and methods of forming such particles, materials, and bits
US7806206B1 (en) 2008-02-15 2010-10-05 Us Synthetic Corporation Superabrasive materials, methods of fabricating same, and applications using same
US8316969B1 (en) 2006-06-16 2012-11-27 Us Synthetic Corporation Superabrasive materials and methods of manufacture
US8911522B2 (en) 2010-07-06 2014-12-16 Baker Hughes Incorporated Methods of forming inserts and earth-boring tools
US8997897B2 (en) 2012-06-08 2015-04-07 Varel Europe S.A.S. Impregnated diamond structure, method of making same, and applications for use of an impregnated diamond structure
CN114214033A (zh) * 2021-12-08 2022-03-22 绍兴自远磨具有限公司 一种工件研磨用磁性磨料及其制备工艺
CN119427209A (zh) * 2025-01-09 2025-02-14 浙江中钻新材料科技有限公司 具有平坦化尖端的cmp研磨垫修整器小锭自动精密布钻设备

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9567506B2 (en) 2007-07-23 2017-02-14 Element Six Limited Method for manufacturing encapsulated superhard material
US9555387B2 (en) * 2008-02-14 2017-01-31 Element Six Limited Method for manufacturing encapsulated superhard material
GB201119329D0 (en) 2011-11-09 2011-12-21 Element Six Ltd Method of making cutter elements,cutter element and tools comprising same

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2042635A (en) * 1932-09-17 1936-06-02 Shellwood Johnson Company Porous metal body and process for making it
US2162600A (en) * 1936-07-27 1939-06-13 Carborumdum Company Filler for abrasive articles
US2319331A (en) * 1942-04-28 1943-05-18 Callite Tungsten Corp Abrasive article
US2416867A (en) * 1943-09-06 1947-03-04 Carroll H Coberly Combined sewage settling and digesting tank having an inclined apron discharging into the tank, an effluent channel, and an inverted v-shaped baffle extending across the tank between the apron and the channel
US2737454A (en) * 1952-06-07 1956-03-06 Norton Co Diamond grinding wheel
US2877103A (en) * 1954-12-07 1959-03-10 M & M Res And Dev Company Artificial abrasive articles
CA594400A (en) * 1960-03-15 The Goodyear Tire And Rubber Company Thermosetting resin with hollow beads and metal powder
GB837013A (en) * 1956-11-05 1960-06-09 Morgan Crucible Co Material for cutting tools
US2943926A (en) * 1958-07-18 1960-07-05 Cincinnati Milling Machine Co Abrasive wheel composition
US2947124A (en) * 1959-09-08 1960-08-02 Bendix Aviat Corp Process for tumble finishing
US2986455A (en) * 1958-02-21 1961-05-30 Carborundum Co Bonded abrasive articles

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA594400A (en) * 1960-03-15 The Goodyear Tire And Rubber Company Thermosetting resin with hollow beads and metal powder
US2042635A (en) * 1932-09-17 1936-06-02 Shellwood Johnson Company Porous metal body and process for making it
US2162600A (en) * 1936-07-27 1939-06-13 Carborumdum Company Filler for abrasive articles
US2319331A (en) * 1942-04-28 1943-05-18 Callite Tungsten Corp Abrasive article
US2416867A (en) * 1943-09-06 1947-03-04 Carroll H Coberly Combined sewage settling and digesting tank having an inclined apron discharging into the tank, an effluent channel, and an inverted v-shaped baffle extending across the tank between the apron and the channel
US2737454A (en) * 1952-06-07 1956-03-06 Norton Co Diamond grinding wheel
US2877103A (en) * 1954-12-07 1959-03-10 M & M Res And Dev Company Artificial abrasive articles
GB837013A (en) * 1956-11-05 1960-06-09 Morgan Crucible Co Material for cutting tools
US2986455A (en) * 1958-02-21 1961-05-30 Carborundum Co Bonded abrasive articles
US2943926A (en) * 1958-07-18 1960-07-05 Cincinnati Milling Machine Co Abrasive wheel composition
US2947124A (en) * 1959-09-08 1960-08-02 Bendix Aviat Corp Process for tumble finishing

Cited By (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3510440A (en) * 1964-12-01 1970-05-05 British Ropes Ltd Corrosion preventing compositions
US3402035A (en) * 1965-12-07 1968-09-17 Thomas J. Martin Abrasive wheel having a metal coated graphite lubricant therein
US3596649A (en) * 1968-04-04 1971-08-03 J K Smit & Sons Inc Abrasive tool and process of manufacture
US3779726A (en) * 1969-03-07 1973-12-18 Norton Co A method of making a metal impregnated grinding tool
US3879901A (en) * 1970-06-24 1975-04-29 De Beers Ind Diamond Metal-coated diamonds in a metal alloy matrix
US3879175A (en) * 1971-06-24 1975-04-22 De Beers Ind Diamond Bearing bodies and methods of forming bearing surfaces
US4062660A (en) * 1973-04-16 1977-12-13 Nicholas Michael G Method of producing nickel coated diamond particles
USRE29808E (en) * 1973-09-26 1978-10-24 Norddeutsche Schleifmittel-Indutrie Christiansen & Co. Hollow body grinding materials
DE2348338A1 (de) * 1973-09-26 1975-04-03 Norddeutsche Schleifmittel Ind Flaechiges schleifmittel
US3928949A (en) * 1973-09-26 1975-12-30 Norddeutsche Schleifmittel Ind Hollow body grinding materials
US4063907A (en) * 1975-07-28 1977-12-20 General Electric Company Modifying the surface of diamond particles
US4011064A (en) * 1975-07-28 1977-03-08 General Electric Company Modifying the surface of cubic boron nitride particles
US4231762A (en) * 1977-05-04 1980-11-04 Sumitomo Electric Industries, Ltd. Method of producing a sintered diamond compact
EP0046374A3 (en) * 1980-08-14 1982-06-23 De Beers Industrial Diamond Division (Proprietary) Limited Abrasive product
US4378975A (en) * 1980-08-14 1983-04-05 Tomlinson Peter N Abrasive product
US4781754A (en) * 1987-09-24 1988-11-01 General Motors Corporation Rapid solidification of plasma sprayed magnetic alloys
EP0352811A1 (de) * 1988-07-29 1990-01-31 Norton Company Heizbeständiges Produkt und Verfahren zu dessen Herstellung
US5011514A (en) * 1988-07-29 1991-04-30 Norton Company Cemented and cemented/sintered superabrasive polycrystalline bodies and methods of manufacture thereof
US5151107A (en) * 1988-07-29 1992-09-29 Norton Company Cemented and cemented/sintered superabrasive polycrystalline bodies and methods of manufacture thereof
EP0533444A2 (de) 1991-09-20 1993-03-24 General Electric Company Verfahren zur Herstellung eines Sägeblatts
EP0533444A3 (en) * 1991-09-20 1993-06-23 General Electric Company Coated abrasive particles
US5405573A (en) * 1991-09-20 1995-04-11 General Electric Company Diamond pellets and saw blade segments made therewith
CN100365148C (zh) * 2002-10-29 2008-01-30 六号元素(控股)公司 复合材料
CN100358669C (zh) * 2003-05-12 2008-01-02 宋健民 披覆焊料的钻石或立方氮化硼及其集结体及其制法
US8316969B1 (en) 2006-06-16 2012-11-27 Us Synthetic Corporation Superabrasive materials and methods of manufacture
US20090152015A1 (en) * 2006-06-16 2009-06-18 Us Synthetic Corporation Superabrasive materials and compacts, methods of fabricating same, and applications using same
US8602132B2 (en) 2006-06-16 2013-12-10 Us Synthetic Corporation Superabrasive materials and methods of manufacture
WO2008018048A3 (en) * 2006-08-11 2008-04-03 Element Six Ltd Dual stage process for the rapid formation of pellets
US20100062253A1 (en) * 2006-08-11 2010-03-11 David Egan Dual stage process for the rapid formation of pellets
CN101517102B (zh) * 2006-08-11 2013-01-23 六号元素有限公司 快速形成粒料的两阶段方法
US20100122853A1 (en) * 2007-02-23 2010-05-20 Baker Hughes Incorporated Encapsulated diamond particles, materials and impregnated diamond earth-boring bits including such particles, and methods of forming such particles, materials, and bits
US8069936B2 (en) 2007-02-23 2011-12-06 Baker Hughes Incorporated Encapsulated diamond particles, materials and impregnated diamond earth-boring bits including such particles, and methods of forming such particles, materials, and bits
US8936665B2 (en) 2007-11-08 2015-01-20 Alfa Laval Corporate Ab Diamond metal composite
US20100279138A1 (en) * 2007-11-08 2010-11-04 Alfa Laval Corporate Ab Diamond metal composite
CN101918603B (zh) * 2007-11-08 2013-10-30 阿尔法拉瓦尔股份有限公司 金刚石金属复合材料
WO2009061265A1 (en) * 2007-11-08 2009-05-14 Alfa Laval Corporate Ab A diamond metal composite
US8151911B1 (en) 2008-02-15 2012-04-10 Us Synthetic Corporation Polycrystalline diamond compact, methods of fabricating same, and rotary drill bit using same
US8448727B1 (en) 2008-02-15 2013-05-28 Us Synthetic Corporation Rotary drill bit employing polycrystalline diamond cutting elements
US7806206B1 (en) 2008-02-15 2010-10-05 Us Synthetic Corporation Superabrasive materials, methods of fabricating same, and applications using same
US8911522B2 (en) 2010-07-06 2014-12-16 Baker Hughes Incorporated Methods of forming inserts and earth-boring tools
US8997897B2 (en) 2012-06-08 2015-04-07 Varel Europe S.A.S. Impregnated diamond structure, method of making same, and applications for use of an impregnated diamond structure
US9731404B2 (en) 2012-06-08 2017-08-15 Varel Europe S.A.S. Method of manufacturing an impregnated structure for abrading
CN114214033A (zh) * 2021-12-08 2022-03-22 绍兴自远磨具有限公司 一种工件研磨用磁性磨料及其制备工艺
CN119427209A (zh) * 2025-01-09 2025-02-14 浙江中钻新材料科技有限公司 具有平坦化尖端的cmp研磨垫修整器小锭自动精密布钻设备

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Publication number Publication date
GB1014295A (en) 1965-12-22
NL6709790A (de) 1967-11-27
CH410664A (de) 1966-03-31
SE305168B (de) 1968-10-14
DE1427585A1 (de) 1968-12-12

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