EP1851004B1 - Schleifkörper und deren herstellung - Google Patents

Schleifkörper und deren herstellung Download PDF

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Publication number
EP1851004B1
EP1851004B1 EP06707659A EP06707659A EP1851004B1 EP 1851004 B1 EP1851004 B1 EP 1851004B1 EP 06707659 A EP06707659 A EP 06707659A EP 06707659 A EP06707659 A EP 06707659A EP 1851004 B1 EP1851004 B1 EP 1851004B1
Authority
EP
European Patent Office
Prior art keywords
abrasive
abrasive bodies
binder
bodies
bodies according
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.)
Not-in-force
Application number
EP06707659A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1851004A1 (de
Inventor
Diethard Sinram
Peter Alfer
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.)
Rud Starcke GmbH and Co KG
Original Assignee
Rud Starcke GmbH and Co KG
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 Rud Starcke GmbH and Co KG filed Critical Rud Starcke GmbH and Co KG
Priority to PL06707659T priority Critical patent/PL1851004T3/pl
Publication of EP1851004A1 publication Critical patent/EP1851004A1/de
Application granted granted Critical
Publication of EP1851004B1 publication Critical patent/EP1851004B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B24D3/14—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 ceramic, i.e. vitrified bondings
    • B24D3/18—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 ceramic, i.e. vitrified bondings for porous or cellular structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials

Definitions

  • the invention relates to abrasive articles, preferably a grinding tool, in particular abrasive tools, in which the abrasive bodies are fixed in a material-locking manner on a carrier.
  • the carriers may preferably be flexible and the respective grinding tools may be in the form of, for example, bands or plates (pads).
  • the production of such abrasive bodies should take the form of spherical abrasives of a plurality of abrasive grains being formed from a suspension made of abrasive grains and an organic binder matrix in a stirred vessel within the suspension and held in suspension by the stirring.
  • the drop-shaped abrasive bodies formed from a plurality of abrasive grains are bound by the binder in the suspension.
  • the spherical abrasive particles After the spherical abrasive particles have reached sufficient strength in the suspension, they should then be separated from the liquid components by, for example, decantation or other processes.
  • the spherical abrasive bodies can then be cleaned with a solvent outside and then dried, whereupon they are then available for the production of abrasive tools.
  • a slight porosity can be established at the spherical droplets forming the abrasive bodies, which in any case should form below 35% closed pores, with a preferred range of 7 to 15% of the volume closed pores are to be formed.
  • abrasive articles each consisting of abrasive grains formed from abrasive grains. These abrasive grains are bonded together by means of a ceramic binder. These abrasive articles are used for the surface treatment of, for example, glass.
  • Each abrasive article has a porosity formed by introducing an organic binder and expelling it by burning.
  • the product usable as an abrasive article then has only the ceramic binder.
  • this object is achieved with abrasive articles having the features of claim 1. They can be produced by a method according to claim 14. Advantageous embodiments and further developments of the invention can be achieved with the features described in the subordinate claims.
  • the grinding tools according to the invention for grinding tools are formed from abrasive grains which are bonded to one another in a material-locking manner by means of a binder.
  • the grinding wheels have an at least approximately spherical outer contour and a porosity of at least 35%. More preferably, a porosity of above 40% can be maintained in the abrasive articles.
  • They can be formed from abrasive grains whose particle size in the range between 0.05 and 10 .mu.m, preferably between 0.1 to 3 .mu.m.
  • abrasive bodies can then be made available whose outer diameter is in the range between 10 and 150 microns, preferably between 25 and 80 microns.
  • a production or a classification can be made so that for the individual grinding wheels to be used on a grinding tool, a narrow outer diameter range, quasi a constant grain size of such abrasive has been met.
  • a maximum deviation of the particle size of the abrasive grains used for an abrasive body should be maintained at a maximum of 20% about an average value for a predefinable particle size.
  • the abrasive bodies of the invention can be used both with a spherical / spherical outer contour for grinding tools, in which a homogeneous distribution of cohesively bonded by a binder abrasive grains has been complied with and therefore the porosity over the entire volume of an abrasive body is almost constant.
  • the abrasive bodies formed correspondingly with a spherical outer contour can also be completely hollow on the inside and form a correspondingly porous shell around a cavity cohesively bonded abrasive grains.
  • a porosity of at least 35% may also have been maintained in the shell.
  • the binder used for the cohesive bonding of abrasive grains should have ⁇ 10% by mass with a respective abrasive article, whereby binder contents ⁇ 5% by weight may be sufficient.
  • the abrasive grains may be selected from SiC, Al 2 O 3 (corundum), BN, WC / CO, WC, diamond, zirconium corundum, SG- Kom (abrasive grains from the sol-gel or sintering process), with corresponding mixtures of these chemical Compounds for the production of respective grinding wheels can be used.
  • binders for example, different phenolic resins, polyurethane, epoxy resins, urea resins and PVB (polyvinyl butyral) can be used.
  • a large number of grinding bodies can then be fixed in a material-locking manner on a carrier, as already mentioned in the introductory part, on tape-shaped or sheet-shaped carriers.
  • the cohesive fixing can in turn likewise be used with a binder, preferably an organic binder and particularly preferably the same binder with which the abrasive grains are also adhesively bonded to form an abrasive body.
  • the abrasive particles may have been fixed in the form of a single layer as uniform as possible, equidistant arrangement on at least one surface of a carrier. However, it is also possible to fix abrasive bodies in multiple layers on a carrier or to apply abrasive particles as a heterogeneous filling on the carrier and then to firmly fix them again.
  • grinding tools with at least approximately constant outside diameters should have been applied and fixed on a carrier for a grinding tool.
  • Abrasive particles can be tempered again after their actual production, and this should be done in a temperature range between 150 and 200 ° C, preferably at about 175 ° C over a period of two hours.
  • tempering can also be carried out simultaneously with the cohesive fixation of the grinding bodies on the respective carriers with the formation of the cohesive fixation.
  • UV curing of the grinding wheels after their actual production and cold hardening by means of suitable binder systems would also be possible.
  • the abrasive articles according to the invention can be produced by means of a suspension formed from a binder, solvent and abrasive grains, in which, if appropriate, further additives can also be present.
  • small droplets and agglomerates are formed from and not in the suspension, from which the solvent is expelled, for example by evaporation, after drop formation.
  • the drops should not be formed within the suspension but in a gas atmosphere, for example air or nitrogen.
  • the grinding tools formed with abrasive bodies according to the invention can now be used for very fine machining of workpiece surfaces which, as in the general part of the description, have also been shed with additional protective layers, such as coating layers.
  • additional protective layers such as coating layers.
  • the relatively high porosity which can be readily adjusted at up to 70%, can also be achieved for a prolonged period of use of abrasive tools according to the invention, since the corresponding available open pore volume can relatively absorb a relatively larger attrition, as is the case with the solutions known from the prior art.
  • the individual abrasive grains of the individual abrasive particles are not wetted over their entire surfaces with the binder and therefore only small surface areas have been wetted with binder for the cohesive connection of the individual adjacent abrasive grains, with which in turn the cohesive connection of the adjacent abrasive grains Abrasive bodies has been produced, when using the grinding tools can replace individual abrasive grains and release free pores for a further absorption of abrasion during grinding.
  • FIG. 2 should be suggested that even inside hollow grinding wheels can be easily produced.
  • abrasive grains of SiC were used with a particle size of about 5 microns.
  • the correspondingly produced abrasive particles had an approximately spherical outer contour with outer diameters of approximately 50 ⁇ m, whereby in some cases after the production of abrasive bodies a classification to this diameter range of approximately 50 ⁇ m was carried out.
  • an aqueous suspension with polyurethane binder prepared in the suspension in a proportion of 2 to 4% by mass and the designated SiC abrasive grains was prepared.
  • the proportion of SiC in the suspension was 40-70% by mass.
  • phenolic resin eg novolak
  • acetone being added as the solvent to the suspension.
  • abrasive particles were formed by spray drying using a two-fluid nozzle from the resulting droplets of the suspension, the respective solvent, ie water or acetone, being expelled in advance and the respective binder corresponding to the cohesive connection between adjacent abrasive grains for the individual abrasive bodies has been activated.
  • a temperature in the range of 250 to 120 ° C was maintained for the corresponding drying / activation.
  • the abrasive bodies were further annealed at a temperature of about 175 ° C over a period of about two hours to increase their overall strength.
  • the abrasive articles then had a porosity in the range between 60 and 70% and could subsequently be fixed in a material-locking manner to a corresponding carrier for the production of grinding tools, as already mentioned in the general part of the description.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP06707659A 2005-02-19 2006-01-03 Schleifkörper und deren herstellung Not-in-force EP1851004B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06707659T PL1851004T3 (pl) 2005-02-19 2006-01-03 Bryłki ścierne i ich wytwarzanie

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005007661A DE102005007661A1 (de) 2005-02-19 2005-02-19 Schleifkörper und deren Herstellung
PCT/EP2006/050023 WO2006087247A1 (de) 2005-02-19 2006-01-03 Schleifkörper und deren herstellung

Publications (2)

Publication Number Publication Date
EP1851004A1 EP1851004A1 (de) 2007-11-07
EP1851004B1 true EP1851004B1 (de) 2011-09-28

Family

ID=36001101

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06707659A Not-in-force EP1851004B1 (de) 2005-02-19 2006-01-03 Schleifkörper und deren herstellung

Country Status (11)

Country Link
US (1) US8021450B2 (pt)
EP (1) EP1851004B1 (pt)
CN (1) CN1993207B (pt)
AT (1) ATE526113T1 (pt)
BR (1) BRPI0606537B1 (pt)
DE (1) DE102005007661A1 (pt)
ES (1) ES2374564T3 (pt)
HK (1) HK1102006A1 (pt)
MX (1) MX2007003143A (pt)
PL (1) PL1851004T3 (pt)
WO (1) WO2006087247A1 (pt)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090152015A1 (en) * 2006-06-16 2009-06-18 Us Synthetic Corporation Superabrasive materials and compacts, methods of fabricating same, and applications using same
DE102008035515B3 (de) * 2008-07-30 2009-12-31 Center For Abrasives And Refractories Research & Development C.A.R.R.D. Gmbh Gesinterte Schleifkornagglomerate
ES2509821T3 (es) 2008-10-10 2014-10-20 Center For Abrasives And Refractories Research & Development C.A.R.R.D. Gmbh Aglomerados de granos abrasivos, procedimiento para su producción así como su uso para la producción de agentes abrasivos
CN104263318A (zh) * 2014-04-24 2015-01-07 沈衡平 一种用于非金属凹凸面磨削抛光的弹性磨块的金刚石磨料
CN104669134A (zh) * 2015-01-30 2015-06-03 洛阳希微磨料磨具有限公司 一种磨料砂轮的制备方法
CN108081159B (zh) * 2017-12-13 2019-12-06 衢州学院 一种聚乙烯醇缩醛树脂磨具有机凝胶成型方法
CN109759962B (zh) * 2019-02-18 2021-01-05 昆山鑫轮超硬磨具有限公司 一种用于钢坯磨削的重负荷树脂砂轮及其制造方法
CN110315439B (zh) * 2019-08-05 2020-06-16 衢州学院 一种具有毛细微孔的镜面磨削砂轮及其制备方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB896910A (en) * 1958-02-21 1962-05-23 Carborundum Co Bonded abrasive articles
DE2608273B2 (de) * 1976-02-28 1977-12-22 Carborundum-Werke GmbH, 4000 Düsseldorf Blatt- oder bandfoermiges schleifwerkzeug, verfahren und vorrichtung zum herstellen des schleifwerkzeugs
SE418738B (sv) 1978-05-25 1981-06-22 Slipmaterial Naxos Ab Slipmedel samt forfarande for tillverkning av slipmedlet
US4486200A (en) * 1980-09-15 1984-12-04 Minnesota Mining And Manufacturing Company Method of making an abrasive article comprising abrasive agglomerates supported in a fibrous matrix
DE60112740T2 (de) 2000-05-09 2006-06-01 3M Innovative Properties Co., Saint Paul Poröser schleifgegenstand mit keramischen schleifcomposites, verfahren zur herstellung und verfahren zur verwendung

Also Published As

Publication number Publication date
BRPI0606537B1 (pt) 2016-12-27
CN1993207A (zh) 2007-07-04
HK1102006A1 (en) 2007-11-02
ES2374564T3 (es) 2012-02-17
US20080064312A1 (en) 2008-03-13
DE102005007661A1 (de) 2006-08-24
PL1851004T3 (pl) 2012-02-29
EP1851004A1 (de) 2007-11-07
ATE526113T1 (de) 2011-10-15
CN1993207B (zh) 2013-03-13
WO2006087247A1 (de) 2006-08-24
BRPI0606537A2 (pt) 2009-06-30
US8021450B2 (en) 2011-09-20
MX2007003143A (es) 2007-07-04

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