DE6902125U - ELECTRICALLY CONDUCTIVE GRINDING BODY - Google Patents
ELECTRICALLY CONDUCTIVE GRINDING BODYInfo
- Publication number
- DE6902125U DE6902125U DE6902125U DE6902125U DE6902125U DE 6902125 U DE6902125 U DE 6902125U DE 6902125 U DE6902125 U DE 6902125U DE 6902125 U DE6902125 U DE 6902125U DE 6902125 U DE6902125 U DE 6902125U
- Authority
- DE
- Germany
- Prior art keywords
- abrasive
- silver
- electrically conductive
- vol
- body 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.)
- Expired
Links
- 229910052709 silver Inorganic materials 0.000 claims description 16
- 239000004332 silver Substances 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 239000006061 abrasive grain Substances 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 5
- 239000003082 abrasive agent Substances 0.000 claims description 4
- 239000005011 phenolic resin Substances 0.000 claims description 3
- 229920001568 phenolic resin Polymers 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 2
- 239000010432 diamond Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229910003460 diamond Inorganic materials 0.000 claims 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims 1
- 239000004634 thermosetting polymer Substances 0.000 claims 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 15
- 239000011230 binding agent Substances 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 235000010299 hexamethylene tetramine Nutrition 0.000 description 1
- 239000004312 hexamethylene tetramine Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- RCHKEJKUUXXBSM-UHFFFAOYSA-N n-benzyl-2-(3-formylindol-1-yl)acetamide Chemical compound C12=CC=CC=C2C(C=O)=CN1CC(=O)NCC1=CC=CC=C1 RCHKEJKUUXXBSM-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
-
- 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
- B24D3/34—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
- B24D3/342—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 incorporated in the bonding agent
- B24D3/344—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 incorporated in the bonding agent the bonding agent being organic
Description
Beschreibung zu der Gebrauchsmusteranmeldung Description of the utility model application
NORTON COMPANY Worcester, Massachusetts, United States of AmericaNORTON COMPANY Worcester, Massachusetts, United States of America
betreffend
Elektrisch leitende Schleifkörperconcerning
Electrically conductive abrasives
Es sind elektrisch leitende Schleifkörper bekannt, bei denen Metallpulver mit Hilfe eines Phenolaldehydharze s gebunden sind und für das elektrolytische Schleifen angewandt werden sollen. Bei den bekannten Schleifkörpern insbesondere Schleifscheiben soll der minimale Metallgehalt 38 Vol.-% betragen und kann bis etwa 59 Vol.-Ji ausmachen. In derartigen Schleifkörpern beträgt also das VbI.-Verhältnis Bindemittel zu Metall #t**s 0;7 bis 1.7, Es sind auch bereits harzgebundene Schleifscheiben bekannt, in denen 40 bis 75 Vol.-96 Metall also entsprechend einem Verhältnis Bindemittel zu Metall etwa 0,33 bis 1,67 vorliegen.Electrically conductive grinding bodies are known in which metal powders are bonded with the aid of a phenol aldehyde resin and are intended to be used for electrolytic grinding. In the case of the known grinding bodies, in particular grinding wheels, the minimum metal content should be 38% by volume and can amount to about 59% by volume. In such grinding tools, the VbI. Ratio of binder to metal is # t ** s 0 ; 7 to 1.7, Resin-bonded grinding wheels are also known in which 40 to 75 vol. 96 metal are present, corresponding to a binder to metal ratio of around 0.33 to 1.67.
Bei diesen bekannten Produkten liegt das Verhältnis Bindemittel zu Metall tiefer als es wünschenswert wäre. Der Metallanteil wirkt sich nachteilig auf die physikalischen Eigenschaftelt .der Bindung aus. Die Schleifkörper können nur schwer auf Toleranz gearbeitet werden, so daß schon aus diesem Grund ein geringerer Metallanteil anstrebenswert wäre.In these known products, the binder to metal ratio is lower than would be desirable. The metal content has a negative effect on the physical properties of the bond. The grinding wheels can only be worked with difficulty to tolerance, so that for this reason a lower metal content is desirable were.
8Ml8Ml
190212 5 uttTe190212 5 uttTe
1G-35 296 - 2 -1G-35 296 - 2 -
Die Neuerung bringt nun Schleifkörner insbesondere Schleifscheiben, die Silber als Metallpulver enthalten, wobei der Metallanteil nur etwa 1/5 der Menge ausmacht, wie sie bisher für ausreichende elektrische Eigenschaften der Schleifkörner zum elektrochemischen Schleifen erforderlich erachtet wurden. Bei den bekannten Produkten wurde keine Unterscheidung hinsichtlich der Art des Metalls also Kupfer oder Silber gemacht. Die Tatsache, daß der Widerstand von Silber etwa 6% tiefer ist als der von Kupfer, wurde nicht beachtet (1,6.10 Ä .cm für Silber gegenüber 1,7.10 -ß .cm für Kupfer). Bei den neuen Schleifscheiben sollte der Silberanteil 10 bis 25 V0I.-96 der Bindung ausmachen.The innovation now brings abrasive grains, in particular grinding wheels that contain silver as metal powder, where the metal content is only about 1/5 of the amount that was previously used for sufficient electrical properties the abrasive grains were deemed necessary for electrochemical grinding. With the well-known products no distinction was made with regard to the type of metal, i.e. copper or silver. The fact, that the resistance of silver is about 6% lower than that of copper was not taken into account (1.6.10 cm for Silver versus 1.7.10-.cm for copper). The silver content of the new grinding wheels should be 10 to Make 25 V0I.-96 of the bond.
Der Anteil an Schleifkorn kann zwischen weiten Grenzen schwanken. Man kann übliches Schleif material verwenden. Da es sich bei dem Anwendungsgebiet der neuen Schleifkörper um ein reines elektrochemisches Schleifen handelt, so ist eigentlich die Aufgabe des Schleifkorns nur eine untergeordnete. Es soll dem Werkstück für die gewünschte Toleranz und Oberflächengüte auch die letzte Behandlung durch mechanische Einwirkung geben. In der Praxis liegt der maximale Anteil an Schleifkorn bei etwa 70 Vol.-Ji und der minimale Anteil bei rund 12 %. The proportion of abrasive grain can vary between wide limits. Common abrasive materials can be used. Since the field of application of the new grinding tools is purely electrochemical grinding, the task of the abrasive grain is actually only a minor one. It should also give the workpiece the final treatment by mechanical action for the desired tolerance and surface quality. In practice, the maximum proportion of abrasive grain is around 70 vol.-Ji and the minimum proportion is around 12 %.
Als besonders zweckmäßig für die Herstellung der neuen Schleifscheiben zeigten sich Schleifmittel auf der Basis von Tonerde oder Siliciumcarbid, Körnungsnummer (ca. 0,35 mm). Bei Anwendung von Tonerde bevorzugt man 68,596 Schleifkorn bei 31,5 % Bindemittel und bei Siliciumcarbid 63,8% in 36,2% Bindemittel.Abrasives based on alumina or silicon carbide with a grain number (approx. 0.35 mm) proved to be particularly useful for the production of the new grinding wheels. When using alumina, preference is given to 68.596 abrasive grit with 31.5 % binder and 63.8% with 36.2% binder for silicon carbide.
•102125 litt Tl• 102125 suffered Tl
1G-35 296 - 3 -1G-35 296 - 3 -
Als Bindemittel dient ein phenolisches Harzpulver enthaltend 1096 Hexamethylentetramin in einer Gewichtsmenge von z.B. 38,696, als Metallpulver wurde 57,8% Silber 0,9 bis 1,4 ,umund noch 3,696 Kalk als Füllstoff angewandt.A phenolic resin powder containing 1096 hexamethylenetetramine in an amount by weight of, for example, 38.696 is used as the binder, the metal powder was 57.8% Silver 0.9 to 1.4 um and 3.696 more lime as a filler applied.
Anstelle des oben angegebenen Schleifkorns kann mann auch feineres Material z.B. Körnungsnummer 100 (0,15 mm) anwenden.Instead of the abrasive grit specified above, you can also use finer material, e.g. grit number 100 (0.15 mm).
Anstelle des erwähnten Schleifkorns kann man auch Diamanten anwenden.Instead of the abrasive grit mentioned, you can also use diamonds.
Bei dem hier gegebenen Beispiel liegen 15 Vol.-96 Silber in der Bindung und ca. 8 V0I.-96 Silber im fertigen Schleifkörper ensprechend ca. 18 Gew.-96 Silber vor.In the example given here, there are 15 vol.-96 silver in the bond and approx. 8 vol.-96 silver in the finished product Abrasive body corresponding to approx. 18 wt. 96 silver.
Zur Ermittlung der Schleifleistung wurden Prüfstäbe 25x100 mm (1x4in.) angewandt, Stromstärke 230 A, Spannung 2 V. Ein ähnlich aufgebauter Schleifkörper mit 11 Vol.-96 Silber zeigt eine Stromstärke von 100 A bei 3 V, was zufriedenstellend ist. Bei 9 Vol.-# Silber ist die Leitfähigkeit praktisch Null, nämlich weniger als 10 A bei 1 bis 4 V.To determine the grinding performance, test bars 25x100 mm (1x4in.) Were used, current 230 A, voltage 2 V. A similarly structured grinding wheel with 11 vol-96 silver shows a current strength of 100 A at 3 V, what is satisfactory. With 9 vol .- # silver the conductivity is practically zero, namely less than 10 A at 1 to 4 V.
Es können auch andere übliche Phenolharze angewandt werden. Man bevorzugt billige und allgemein verfügbare. Man kann praktisch jedes wärmehärtende formbare Harz anwenden, solange es keinen Angriff auf das Silber befürchten läßt.Other conventional phenolic resins can also be used. They prefer cheap and widely available. Practically any thermosetting moldable resin can be used as long as it does not fear attack the silver leaves.
190212523.1*70190212523.1 * 70
1G-35 296 - 4 -1G-35 296 - 4 -
Die überraschend hohe Leitfähigkeit der neuen Schleifscheiben dürfte voraussichtlich nicht in der vollständig homogenen Verteilung des Silbers in der Bindung liegen. Mikroskopische Aufnahmen der fertigen Schleifscheiben zeigten, daß das Silber, wenn es anfänglich homogen untermischt ist, zu Leitpfaden während des nachfolgenden Verarbeitens des Gemischs seigert, wenn in dem Gemisch 10 bis 25 Vol.-% organisches Bindemittel vorliegt und die Korngröße des Silbers unter 10 /um beträgt.The surprisingly high conductivity of the new grinding wheels is unlikely to be due to the completely homogeneous distribution of the silver in the bond. Microscopic photographs of the finished grinding wheels showed that the silver, if it is initially mixed in homogeneously, segregates into guide paths during the subsequent processing of the mixture if the mixture contains 10 to 25 % by volume of organic binder and the grain size of the silver is below 10 / around is.
110212523.1176110212523.1176
Claims (4)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US67953367A | 1967-10-31 | 1967-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE6902125U true DE6902125U (en) | 1970-12-23 |
Family
ID=24727302
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19681805290 Pending DE1805290A1 (en) | 1967-10-31 | 1968-10-25 | Electrically conductive abrasives and processes for their manufacture |
| DE6902125U Expired DE6902125U (en) | 1967-10-31 | 1968-10-25 | ELECTRICALLY CONDUCTIVE GRINDING BODY |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19681805290 Pending DE1805290A1 (en) | 1967-10-31 | 1968-10-25 | Electrically conductive abrasives and processes for their manufacture |
Country Status (16)
| Country | Link |
|---|---|
| US (1) | US3547609A (en) |
| JP (1) | JPS4815198B1 (en) |
| AT (1) | AT296072B (en) |
| BE (1) | BE721665A (en) |
| CH (1) | CH523748A (en) |
| DE (2) | DE1805290A1 (en) |
| ES (1) | ES358977A1 (en) |
| FI (1) | FI41116B (en) |
| FR (1) | FR1588743A (en) |
| GB (1) | GB1187337A (en) |
| IE (1) | IE32341B1 (en) |
| IL (1) | IL30791A (en) |
| LU (1) | LU57166A1 (en) |
| NL (1) | NL6815118A (en) |
| SE (1) | SE348394B (en) |
| SU (1) | SU482937A3 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3850590A (en) * | 1970-09-28 | 1974-11-26 | Impregnated Diamond Prod Ltd | An abrasive tool comprising a continuous porous matrix of sintered metal infiltrated by a continuous synthetic resin |
| US3899050A (en) * | 1971-07-06 | 1975-08-12 | Textar Gmbh | Lining for brake shoes |
| TWI613285B (en) | 2010-09-03 | 2018-02-01 | 聖高拜磨料有限公司 | Bonded abrasive article and method of forming |
| TW201223699A (en) * | 2010-09-03 | 2012-06-16 | Saint Gobain Abrasives Inc | Bonded abrasive articles, method of forming such articles, and grinding performance of such articles |
| US9278431B2 (en) | 2012-12-31 | 2016-03-08 | Saint-Gobain Abrasives, Inc. | Bonded abrasive article and method of grinding |
| US9102039B2 (en) | 2012-12-31 | 2015-08-11 | 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 |
| DE112014001102T5 (en) | 2013-03-31 | 2015-11-19 | Saint-Gobain Abrasifs | Bound abrasive article and grinding process |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2162600A (en) * | 1936-07-27 | 1939-06-13 | Carborumdum Company | Filler for abrasive articles |
| US2243105A (en) * | 1939-07-28 | 1941-05-27 | J K Smit & Sons Inc | Abrasive tool |
| US2371700A (en) * | 1943-10-12 | 1945-03-20 | Carborundum Co | Abrasive articles |
| US3062633A (en) * | 1958-12-30 | 1962-11-06 | Norton Co | Electrically conductive organic bonded grinding wheel |
| US3216854A (en) * | 1960-06-06 | 1965-11-09 | Gen Electric | Method for making an electrolytic grinding wheel |
| GB1010506A (en) * | 1960-11-30 | 1965-11-17 | Carborundum Co | Improvements in abrasive products |
| US3321287A (en) * | 1964-07-20 | 1967-05-23 | A P De Sanno & Son Inc | Method of impregnating lubricant into abrasive wheels |
| US3283448A (en) * | 1964-08-14 | 1966-11-08 | Bay State Abrasive Products Co | Organic bonded abrasive article |
| US3433730A (en) * | 1965-04-28 | 1969-03-18 | Gen Electric | Electrically conductive tool and method for making |
| US3402035A (en) * | 1965-12-07 | 1968-09-17 | Thomas J. Martin | Abrasive wheel having a metal coated graphite lubricant therein |
-
1967
- 1967-10-31 US US679533A patent/US3547609A/en not_active Expired - Lifetime
-
1968
- 1968-09-30 IL IL30791A patent/IL30791A/en unknown
- 1968-09-30 IE IE1170/68A patent/IE32341B1/en unknown
- 1968-09-30 BE BE721665D patent/BE721665A/xx unknown
- 1968-10-09 ES ES358977A patent/ES358977A1/en not_active Expired
- 1968-10-09 FI FI2855/68A patent/FI41116B/fi active
- 1968-10-23 NL NL6815118A patent/NL6815118A/xx unknown
- 1968-10-24 SE SE14374/68A patent/SE348394B/xx unknown
- 1968-10-24 SU SU1277104A patent/SU482937A3/en active
- 1968-10-24 CH CH1593568A patent/CH523748A/en not_active IP Right Cessation
- 1968-10-25 DE DE19681805290 patent/DE1805290A1/en active Pending
- 1968-10-25 LU LU57166D patent/LU57166A1/xx unknown
- 1968-10-25 DE DE6902125U patent/DE6902125U/en not_active Expired
- 1968-10-25 AT AT1045968A patent/AT296072B/en not_active IP Right Cessation
- 1968-10-26 JP JP43077647A patent/JPS4815198B1/ja active Pending
- 1968-10-28 GB GB51067/68A patent/GB1187337A/en not_active Expired
- 1968-10-29 FR FR1588743D patent/FR1588743A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| SU482937A3 (en) | 1975-08-30 |
| ES358977A1 (en) | 1970-05-16 |
| CH523748A (en) | 1972-06-15 |
| DE1805290A1 (en) | 1969-06-26 |
| BE721665A (en) | 1969-03-31 |
| IL30791A (en) | 1972-12-29 |
| IE32341B1 (en) | 1973-06-27 |
| FR1588743A (en) | 1970-04-17 |
| JPS4815198B1 (en) | 1973-05-12 |
| AT296072B (en) | 1972-01-25 |
| NL6815118A (en) | 1969-05-02 |
| LU57166A1 (en) | 1969-06-25 |
| GB1187337A (en) | 1970-04-08 |
| FI41116B (en) | 1969-04-30 |
| IE32341L (en) | 1969-04-30 |
| US3547609A (en) | 1970-12-15 |
| SE348394B (en) | 1972-09-04 |
| IL30791A0 (en) | 1968-11-27 |
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