EP0703850A1 - Superabschleifende schleifscheiben - Google Patents

Superabschleifende schleifscheiben

Info

Publication number
EP0703850A1
EP0703850A1 EP95916738A EP95916738A EP0703850A1 EP 0703850 A1 EP0703850 A1 EP 0703850A1 EP 95916738 A EP95916738 A EP 95916738A EP 95916738 A EP95916738 A EP 95916738A EP 0703850 A1 EP0703850 A1 EP 0703850A1
Authority
EP
European Patent Office
Prior art keywords
grinding wheel
wheel according
grinding
porogenic
adjuvants
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Withdrawn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
EP95916738A
Other languages
English (en)
French (fr)
Inventor
Patrick Micheletti
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 Abrasifs SA
Original Assignee
Norton SA France
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 Norton SA France filed Critical Norton SA France
Publication of EP0703850A1 publication Critical patent/EP0703850A1/de
Withdrawn legal-status Critical Current

Links

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
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
    • B24B9/10—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of plate glass
    • 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
    • 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
    • B24D3/10—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 for porous or cellular structure, e.g. for use with diamonds as abrasives
    • 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
    • B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy

Definitions

  • the present invention relates to so-called "super-abrasive" grinding wheels.
  • This term denotes grinding wheels with very high abrasive power, based on very hard abrasive particles, in particular diamond or cubic boron nitride, and an agglomerating agent which makes it possible to retain and hold these particles in place.
  • This binder can be of three types: it can be a resin, in particular a polyimide or phenolic resin. It can also be a vitrified binder, in the form of a ceramic matrix of the alumina, alumina-silica or carbide-silica type. The binder can also be based on a metal matrix, and it is this third type of binder that the invention is more particularly interested in, since it has a particularly advantageous mechanical strength.
  • a constant difficulty in the grinding process is to properly evacuate the dust or other reject products generated by the operation.
  • a medium generally water
  • the grinding wheel simultaneously attacking a whole portion of the surface of the treated article, the coolant has difficulty progressing towards the entire portion being treated. There then occurs a certain accumulation of rejections.
  • grinding is thus systematically accompanied by the formation of a layer of glass paste which tends to oppose the action of the grinding wheel and slows down the operation of grinding by forcing to operate in several passes.
  • the object of the present invention is to provide an improved type of superabrasive grinding wheels with agglomerating metal matrix allowing better management of the problem of dust and other discharges.
  • the subject of the invention is a super-abrasive wheel based on very hard abrasive particles of the diamond or cubic boron nitride type and a agglomerating with a metallic matrix, and which also contains so-called "porogenic" adjuvants. This term includes additives which have the function of creating a certain porosity within the agglomerate of the grinding wheel.
  • adjuvants are to be chosen according to the manufacturing process of the grinding wheels. In particular, they must be able to withstand the correct pressure and temperature. This is the reason why adjuvants are preferably used in the form of hollow ceramic balls, in particular based on silicon oxide and / or aluminum such as alumina or mullite. Mullite is an aluminum silicate of the 2Si0 2 -3AI 2 0 3 type . These balls are advantageously chosen with an outside diameter between 1 micron and 3 mm, in particular between 100 microns and 1 mm. Its walls preferably have a thickness of between 2 and 8, in particular between 4 and 6 micrometers.
  • these porogenic additives are added to the grinding wheel in a proportion of 1 to 80% of the total volume of the grinding wheel, in particular between 5 and 50%, or approximately 30% of said volume.
  • the operating mode of these pore-forming aids is as follows
  • the hollow balls which are found on the surface break and the surface of the grindstone becomes pockmarked; the glass paste can then accumulate in these hollows without hampering the progress of grinding.
  • the coolant can progress continuously at the interface between the grinding wheel and the treated article and thus penetrate to the bottom of these hollows, expelling the glass paste - or any other type of dust - which is thus evacuated to finally be returned by the bottom of each hollow formed by a ball.
  • the coolant thus acts on a much larger surface than the single surface of the belt of the abrasive wheel, allowing direct cooling to a depth of the order of the diameter of the balls, which increases by as much the cooling efficiency and thereby slows the wear of the grinding wheel.
  • the rate of balls in the grinding wheel is to be modulated according to the type of articles to be ground.
  • the metallic matrix of the bonding agent can be chosen according to the applications for which the grinding wheel is intended.
  • Cobalt is widely used, but also bronze, silver which has the distinction of being relatively ductile, iron or copper.
  • additives can be added to this matrix, in particular such as tungsten carbide, in order to increase the resistance to erosion of the grinding wheel.
  • the abrasive particles of the grinding wheel preferably correspond to 5 to 60% of the total volume of the grinding wheel, in particular from 1 0 to 30% of said volume. They can be in rounded form or in the form of needles.
  • FEPA code a standard code from European manufacturers of abrasives
  • a grain size according to this code between 4 and 1 1 82, which corresponds to an "average diameter" particle size of 4 microns at 1.100 mm.
  • a grain size is chosen between 40 and 90.
  • the finest abrasive particles making it possible to obtain the surface condition of the part to be ground the most. polished.
  • the grinding wheel according to the invention is used for machining or grinding glass articles, in particular for grinding the edges of glass sheets.
  • An example of a grinding wheel according to the invention is produced in the following manner: a grinding wheel is produced according to known manufacturing methods with 15% by volume of diamond particles of grain size 91, and 30% by volume of hollow beads of mullite with an outside diameter of about 0.5 mm and a wall thickness of about 5 micrometers, with a cobalt binder. The results are convincing: the grinding of the edges of glass sheets is facilitated by better evacuation of waste, better cooling of the grinding wheel, moreover leading to an increase in the life of the grinding wheel by almost 30% compared to a similar wheel without alumina beads.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP95916738A 1994-04-12 1995-04-11 Superabschleifende schleifscheiben Withdrawn EP0703850A1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9404302 1994-04-12
FR9404302A FR2718379B3 (fr) 1994-04-12 1994-04-12 Meules super abrasives.
PCT/FR1995/000462 WO1995027592A1 (fr) 1994-04-12 1995-04-11 Meules super abrasives

Publications (1)

Publication Number Publication Date
EP0703850A1 true EP0703850A1 (de) 1996-04-03

Family

ID=9461994

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95916738A Withdrawn EP0703850A1 (de) 1994-04-12 1995-04-11 Superabschleifende schleifscheiben

Country Status (13)

Country Link
US (1) US5658194A (de)
EP (1) EP0703850A1 (de)
JP (1) JPH08511482A (de)
KR (1) KR960703050A (de)
CN (1) CN1126962A (de)
AU (1) AU692253B2 (de)
BR (1) BR9506149A (de)
CA (1) CA2164613A1 (de)
FR (1) FR2718379B3 (de)
PL (1) PL311956A1 (de)
TW (1) TW268915B (de)
WO (1) WO1995027592A1 (de)
ZA (1) ZA953013B (de)

Families Citing this family (25)

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Publication number Priority date Publication date Assignee Title
US6015338A (en) * 1997-08-28 2000-01-18 Norton Company Abrasive tool for grinding needles
US6440185B2 (en) 1997-11-28 2002-08-27 Noritake Co., Ltd. Resinoid grinding wheel
SG119138A1 (en) * 1998-04-28 2006-02-28 Ebara Corp Abrading plate and polishing method using the same
US6129134A (en) * 1999-03-11 2000-10-10 The United States Of America As Represented By The Secretary Of The Navy Synthesis of metal matrix composite
US6394888B1 (en) 1999-05-28 2002-05-28 Saint-Gobain Abrasive Technology Company Abrasive tools for grinding electronic components
US6860795B2 (en) * 2001-09-17 2005-03-01 Hitachi Global Storage Technologies Netherlands B.V. Edge finishing process for glass or ceramic disks used in disk drive data storage devices
JP4571821B2 (ja) * 2004-05-19 2010-10-27 株式会社ディスコ 電着砥石の製造方法
JP4734041B2 (ja) * 2005-06-15 2011-07-27 株式会社ディスコ ビトリファイドボンド砥石の製造方法
US8481438B2 (en) 2008-06-13 2013-07-09 Washington Mills Management, Inc. Very low packing density ceramic abrasive grits and methods of producing and using the same
TWI453089B (zh) * 2010-08-16 2014-09-21 Saint Gobain Abrasives Inc 對包含超級磨料材料的工件進行磨削之方法
TWI454342B (zh) 2010-08-16 2014-10-01 Saint Gobain Abrasives Inc 用於對超級磨料工件進行磨削之磨料物品
TWI544064B (zh) 2010-09-03 2016-08-01 聖高拜磨料有限公司 粘結的磨料物品及形成方法
JP5647475B2 (ja) * 2010-09-28 2014-12-24 ＡｖａｎＳｔｒａｔｅ株式会社 ガラス板の製造方法
TW201504416A (zh) 2011-06-30 2015-02-01 Saint Gobain Abrasives Inc 磨料物品及製造方法
US9102039B2 (en) 2012-12-31 2015-08-11 Saint-Gobain Abrasives, Inc. Bonded abrasive article and method of grinding
WO2014106156A1 (en) 2012-12-31 2014-07-03 Saint-Gobain Abrasives, Inc. Bonded abrasive article and method of grinding
US9266219B2 (en) 2012-12-31 2016-02-23 Saint-Gobain Abrasives, Inc. Bonded abrasive article and method of grinding
EP2783794B1 (de) * 2013-03-26 2017-09-27 Reishauer AG Schleifscheibe sowie Verfahren zu ihrer Verstärkung
WO2014165447A1 (en) 2013-03-31 2014-10-09 Saint-Gobain Abrasives, Inc. Bonded abrasive article and method of grinding
CN103395009B (zh) * 2013-07-08 2015-07-01 中原工学院 一种陶瓷空心球多层钎焊金刚石节块及其制作方法
GB201523182D0 (en) 2015-12-31 2016-02-17 Element Six Uk Ltd Super hard constructions & methods of making same
CN105834923A (zh) * 2016-04-22 2016-08-10 柳州凯通新材料科技有限公司 青铜基金刚石砂轮片的加工方法
CN106985085B (zh) * 2017-04-22 2019-01-22 河南工业大学 一种金属结合剂金刚石砂轮
CN110900473B (zh) * 2019-12-11 2020-10-27 郑州磨料磨具磨削研究所有限公司 一种可导电的树脂结合剂砂轮及其制备工艺
CN111069708A (zh) * 2019-12-28 2020-04-28 大可精密齿轮(浙江)有限公司 一种应用于减速器的弧形齿加工工艺

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Also Published As

Publication number Publication date
WO1995027592A1 (fr) 1995-10-19
AU2311895A (en) 1995-10-30
ZA953013B (en) 1996-01-05
BR9506149A (pt) 1996-04-16
FR2718379B3 (fr) 1996-05-24
CA2164613A1 (fr) 1995-10-19
US5658194A (en) 1997-08-19
TW268915B (de) 1996-01-21
MX9505206A (es) 1998-03-31
JPH08511482A (ja) 1996-12-03
FR2718379A1 (fr) 1995-10-13
AU692253B2 (en) 1998-06-04
KR960703050A (ko) 1996-06-19
CN1126962A (zh) 1996-07-17
PL311956A1 (en) 1996-03-18

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