EP1851004A1 - Schleifkörper und deren herstellung - Google Patents
Schleifkörper und deren herstellungInfo
- Publication number
- EP1851004A1 EP1851004A1 EP06707659A EP06707659A EP1851004A1 EP 1851004 A1 EP1851004 A1 EP 1851004A1 EP 06707659 A EP06707659 A EP 06707659A EP 06707659 A EP06707659 A EP 06707659A EP 1851004 A1 EP1851004 A1 EP 1851004A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- abrasive
- body according
- abrasive body
- abrasive grains
- binder
- 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.)
- Granted
Links
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 in the form of, for example, bands or
- Platelets may be formed.
- Abrasive particles in spherical form which are interspersed over the entire diameter with organic binders to be used.
- the production of such abrasive bodies should take the form of forming a spherical abrasive body of a plurality of abrasive grains from a suspension made of abrasive grains and an organic binder matrix in a stirring vessel within the suspension, while keeping it in suspension by stirring.
- the drop-shaped abrasive bodies formed from a plurality of abrasive grains are bound by the binder in the suspension.
- 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 small 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.
- Claim 1 solved. They can be produced by a method according to claim 15. 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 abrasive body in this case 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 done so that a narrow outer diameter range, quasi a constant grain size such abrasive body has been complied with for the individual grinding wheels to be used on a grinding tool.
- 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 body according to 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 consequently the porosity over the entire volume of an abrasive body is almost constant.
- the corresponding trained with a spherical outer contour grinding body can be completely hollow inside and form a cavity cohesively interconnected abrasive grains a correspondingly porous shell.
- 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 weight for a respective abrasive article, whereby binder contents ⁇ 5% by weight may be sufficient.
- the abrasive grains can be selected from SiC, Al 2 O 3 (corundum), BN, WC / CO, WC, diamond, zirconium corundum, SG grain (abrasive grains from the sol-gel or sintering process), with corresponding mixtures of these chemical Compounds can be used for the production of respective grinding bodies.
- binders for example, different phenolic resins, polyurethane, epoxy resins, urea resins and PVB (polyvinyl butyral) can be used.
- abrasive bodies can then on a carrier, as already mentioned in the introductory part, aufband- or sheet-shaped carriers, are firmly bonded.
- the cohesive fixation 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. But it is also possible to fix abrasive body in several layers on a support or abrasive body as a heterogeneous bed on the
- grinding wheels with at least approximately constant outside diameters should have been applied and fixed on a carrier for a grinding tool.
- Grinding body can be annealed again after their actual preparation, and this should be in a temperature range between 150 and 200 0 C, preferably at about 175 ° C over a period of two hours done.
- 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 may also be present.
- the drops should not be formed within the suspension but in a gas atmosphere, for example air or nitrogen.
- Suspension which is accommodated in a container, according to small droplets in a gas atmosphere emerge and subsequently, as already mentioned, expelled the solvent and the cohesive connection of the abrasive grains of a drop can be carried out by appropriate activation of the binder used for the eventual formation of an abrasive article. Due to the special spherical alignment of the individual abrasive grains on the surface of the forming abrasive body, a high initial roughness depth is avoided.
- 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 provided with additional protective layers, such as paint coats.
- additional protective layers such as paint coats.
- 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 body are not fully wetted at their respective 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, in turn, the cohesive connection of the adjacent Abrasive grains on
- Abrasive bodies has been produced, when using the grinding tools can replace individual abrasive grains and release again free pores for further absorption of abrasion during grinding.
- FIG. 1 shows a FESEM image of a grinding body according to the invention with a magnification of 1400: 1;
- FIG. 2 shows a FESEM image of an internally hollow abrasive body with a magnification of 1350: 1;
- FIG. 3 shows an image detail of a FESEM image of a partial region of an inventive abrasive body with a magnification of 5000: 1.
- hollow abrasive bodies can also be produced without further ado.
- abrasive grains of SiC having a particle size of about 5 ⁇ m were used.
- the correspondingly produced abrasive particles had an approximately spherical outer contour with outer diameters of about 50 ⁇ m, whereby in some cases after the production of abrasive bodies a classification to this diameter range of about 50 ⁇ m has been 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.
- 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 correspondingly forming the bonded connection between adjacent abrasive grains for the individual abrasive bodies has been activated.
- a temperature in the range of 250 to 120 0 C was maintained for the corresponding drying / activation.
- the abrasives were again annealed at a temperature of about 175 0 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)
Description
Claims
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 true EP1851004A1 (de) | 2007-11-07 |
EP1851004B1 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 (de) |
EP (1) | EP1851004B1 (de) |
CN (1) | CN1993207B (de) |
AT (1) | ATE526113T1 (de) |
BR (1) | BRPI0606537B1 (de) |
DE (1) | DE102005007661A1 (de) |
ES (1) | ES2374564T3 (de) |
HK (1) | HK1102006A1 (de) |
MX (1) | MX2007003143A (de) |
PL (1) | PL1851004T3 (de) |
WO (1) | WO2006087247A1 (de) |
Families Citing this family (8)
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)
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 |
ATE302094T1 (de) | 2000-05-09 | 2005-09-15 | 3M Innovative Properties Co | Poröser schleifgegenstand mit keramischen schleifcomposites, verfahren zur herstellung und verfahren zur verwendung |
-
2005
- 2005-02-19 DE DE102005007661A patent/DE102005007661A1/de not_active Withdrawn
-
2006
- 2006-01-03 PL PL06707659T patent/PL1851004T3/pl unknown
- 2006-01-03 ES ES06707659T patent/ES2374564T3/es active Active
- 2006-01-03 BR BRPI0606537A patent/BRPI0606537B1/pt not_active IP Right Cessation
- 2006-01-03 CN CN2006800005723A patent/CN1993207B/zh not_active Expired - Fee Related
- 2006-01-03 WO PCT/EP2006/050023 patent/WO2006087247A1/de active Application Filing
- 2006-01-03 AT AT06707659T patent/ATE526113T1/de active
- 2006-01-03 US US11/660,769 patent/US8021450B2/en not_active Expired - Fee Related
- 2006-01-03 MX MX2007003143A patent/MX2007003143A/es active IP Right Grant
- 2006-01-03 EP EP06707659A patent/EP1851004B1/de not_active Not-in-force
-
2007
- 2007-08-23 HK HK07109179.7A patent/HK1102006A1/xx not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO2006087247A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20080064312A1 (en) | 2008-03-13 |
CN1993207A (zh) | 2007-07-04 |
ATE526113T1 (de) | 2011-10-15 |
US8021450B2 (en) | 2011-09-20 |
PL1851004T3 (pl) | 2012-02-29 |
WO2006087247A1 (de) | 2006-08-24 |
BRPI0606537B1 (pt) | 2016-12-27 |
HK1102006A1 (en) | 2007-11-02 |
EP1851004B1 (de) | 2011-09-28 |
BRPI0606537A2 (pt) | 2009-06-30 |
DE102005007661A1 (de) | 2006-08-24 |
CN1993207B (zh) | 2013-03-13 |
ES2374564T3 (es) | 2012-02-17 |
MX2007003143A (es) | 2007-07-04 |
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