GB650529A - Improvements in grinding wheels - Google Patents
Improvements in grinding wheelsInfo
- Publication number
- GB650529A GB650529A GB28092/49A GB2809249A GB650529A GB 650529 A GB650529 A GB 650529A GB 28092/49 A GB28092/49 A GB 28092/49A GB 2809249 A GB2809249 A GB 2809249A GB 650529 A GB650529 A GB 650529A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ceramic
- abrasive
- bond
- annulus
- vitrified
- 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
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
- B24D7/02—Wheels in one piece
- B24D7/04—Wheels in one piece with reinforcing means
Abstract
650,529. Abrasive wheels. NORTON GRINDING WHEEL CO., Ltd. Oct. 21, 1946, No. 28092/49. Convention date, Oct. 20, 1945. Divided out of 650,452. [Class 60] A face grinding wheel comprises an abrasive annulus of diamond grains distributed in a vitrified bond and a supporting annulus of granular body material distributed in a vitrified bond underlying said abrasive layer, the annuli being integrally united by a thin intermediate layer of vitrified bond. A cup wheel comprises an abrasive annulus G and a disc-like back B; the abrasive annulus G, which owing to the high cost of the abrasive is thin, is supported by an underlayer U, and the required depth of wheel is obtained by using ring elements R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP>, R<SP>4</SP>. The abrasive annulus G comprises diamond grains bonded by a ceramic or vitrified bond; the underlayer U comprises granular body material distributed in a vitrified bond; the annulus G and underlayer U are united by a thin layer L of raw bond material; to form a composite abrasive annulus A comparable, for handling purposes, to the ring elements R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP>, R<SP>4</SP>. The ring ele- R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP>, R<SP>4</SP> comprise granular body material and a ceramic or vitrified bond. The composite abrasive annulus A and the ring elements R<SP>1</SP> R<SP>2</SP>, R<SP>3</SP>, R<SP>4</SP> are bonded to each other by ceramic or vitrified bonds J, J<SP>1</SP>, J<SP>2</SP>, J<SP>3</SP>. The granular body material of the ring elements may be fused alumina, 200-300 grit size, 1 per cent-15 per cent by volume; alternatively, the granular body material of the ring elements may be vitreous silica and fused alumina mixed, the abrasive annulus G containing only vitreous silica as a filler. The ceramic or vitrified bond for the abrasive annulus G, underlayer U and ring elements R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP>, R<SP>4</SP> and for bonding these parts together may comprise ball clay and a frit, composed of borax, boric acid, silica, hydrate of alumina and whiting; alternatively, the bond may comprise Kentucky ball clay, ground flint and borax. Any suitable liquid form of binder may be used to plasticize the mix and give strength in the " green " stage. Protective agents such as aluminium, silicon (or compounds thereof) or boron (or compounds thereof) may be employed in the mix, serving also as body materials. Specification 552,246 and U.S.A. Specification 2,356,938 are referred to. The back B may be steel or other metal, cured resins, usually synthetic, such as phenolic formaldehyde resin, aniline formaldehyde resin, or other " resinoids," hardened, cured or vulcanized natural or synthetic rubber or vitrified ceramic material, or it may comprise resinoid-bonded metal particles or powder, e.g. powdered aluminium. When the back B is ceramic, the bond J<SP>4</SP> between it and the ring element R' is ceramic or vitrified bond; when the back B is non- ceramic, the bond between it and the ring element R<SP>4</SP> is a cement giving a rigid joint, e.g. synthetic resins such as phenol formaldehyde, aniline formaldehyde, applied in liquid or semi-liquid condition, and heatcurable or cold-setting. Natural or synthetic rubber, compounded and cured or vulcanized to hard condition may be used. Specification 616,019 also is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US650529XA | 1945-10-20 | 1945-10-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB650529A true GB650529A (en) | 1951-02-28 |
Family
ID=22060034
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB28092/49A Expired GB650529A (en) | 1945-10-20 | 1946-10-21 | Improvements in grinding wheels |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB650529A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4421314A (en) * | 1982-06-28 | 1983-12-20 | Roger Stancill | Board game apparatus |
CN103949989A (en) * | 2014-05-05 | 2014-07-30 | 郑州磨料磨具磨削研究所有限公司 | Device and method for solidifying superhard-material grinding wheel abrasive block with substrate |
-
1946
- 1946-10-21 GB GB28092/49A patent/GB650529A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4421314A (en) * | 1982-06-28 | 1983-12-20 | Roger Stancill | Board game apparatus |
CN103949989A (en) * | 2014-05-05 | 2014-07-30 | 郑州磨料磨具磨削研究所有限公司 | Device and method for solidifying superhard-material grinding wheel abrasive block with substrate |
CN103949989B (en) * | 2014-05-05 | 2016-06-01 | 郑州磨料磨具磨削研究所有限公司 | A kind of extra hard material grinding wheel abrasive material block and matrix consolidation device and method |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5989114A (en) | Composite grinding and buffing disc with flexible rim | |
US3867795A (en) | Composite resinoid bonded abrasive wheels | |
US2986455A (en) | Bonded abrasive articles | |
GB1262724A (en) | Method of making a grinding stone | |
ES375385A1 (en) | Fused zirconia-spinel abrasives and articles made therewith | |
US3471276A (en) | Peripheral abrasive wheels with composite rims | |
US3868233A (en) | Grinding wheel core | |
GB1225175A (en) | ||
JP2003039331A (en) | Grinding wheel having resin core part, manufacturing method thereof, and recycling method thereof | |
GB650529A (en) | Improvements in grinding wheels | |
GB491658A (en) | Improvements in abrasive articles and methods of manufacturing them | |
JP2016137536A (en) | Abrasive wheel and manufacturing method thereof | |
JPH01216774A (en) | Super-abrasive grain wheel and manufacture thereof | |
JP2680739B2 (en) | Resin bond super abrasive whetstone | |
JPH0716882B2 (en) | Superabrasive Vitrified Wheel with Ceramic Sintering Holder | |
JP2000079565A (en) | Double structure vitrified grinding wheel | |
GB650452A (en) | Improvements in diamond abrasive wheels and other abrasive articles | |
GB1247764A (en) | Improvements in or relating to tools and method of manufacture thereof | |
GB516474A (en) | Improvements in or relating to metal bonded abrasive articles | |
US2628896A (en) | Silicon nitride abrasives | |
US2940842A (en) | Abrasive articles | |
GB552248A (en) | Improvements in and relating to grinding wheels and other abrasive articles | |
JPS578077A (en) | Manufacture of grindstone | |
GB500868A (en) | Abrasive article and method of manufacture | |
GB333409A (en) | Improvements in the manufacture of abrasive articles |