GB1061816A - Improvements in or relating to abrasive grain - Google Patents
Improvements in or relating to abrasive grainInfo
- Publication number
- GB1061816A GB1061816A GB3091063A GB3091063A GB1061816A GB 1061816 A GB1061816 A GB 1061816A GB 3091063 A GB3091063 A GB 3091063A GB 3091063 A GB3091063 A GB 3091063A GB 1061816 A GB1061816 A GB 1061816A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grain
- bauxite
- particles
- sintered
- forming
- 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
- 239000006061 abrasive grain Substances 0.000 title abstract 5
- 239000002245 particle Substances 0.000 abstract 7
- 229910001570 bauxite Inorganic materials 0.000 abstract 5
- 239000000463 material Substances 0.000 abstract 4
- 239000011230 binding agent Substances 0.000 abstract 2
- 238000010304 firing Methods 0.000 abstract 2
- 238000005245 sintering Methods 0.000 abstract 2
- 229920001187 thermosetting polymer Polymers 0.000 abstract 2
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 239000005011 phenolic resin Substances 0.000 abstract 1
- 229920001568 phenolic resin Polymers 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1409—Abrasive particles per se
- C09K3/1418—Abrasive particles per se obtained by division of a mass agglomerated by sintering
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention comprises abrasive grain formed of a plurality of sintered microcrystalline particles of bauxite, the grain being of elongated shape and controlled grit size and having a uniform cross-section and an average transverse to longitudinal dimensional ratio of less than 1:1. The grain is prepared by comminuting bauxite into microcrystalline particles, forming the comminuted material directly into grain, each grain being composed of many of said particles, and firing the grain until sintered. The invention also comprises a grinding wheel comprising said abrasive grain and a thermosetting resin bond therefor. The wheel is prepared by adding a thermosetting phenolic resin bond to said grain, and forming the grain and the bond into a wheel under pressure and heat.ALSO:The invention comprises abrasive grain formed of a plurality of sintered microcrystalline particles of bauxite, the grain being of elongated shape and controlled grit size and having a uniform cross-section and an average transverse to longitudinal dimensional ratio of less than 1:1. Preferably the bauxite particles are each not more than about 2.5 microns in size prior to sintering, and in the sintered grain are each not more than about 5 microns in size. The abrasive grain is prepared by comminuting bauxite into microcrystalline particles, forming the comminuted material directly into grain of uniform cross-section and controlled grit size with an average transverse to longitudinal dimensional ratio of less than 1:1, each grain being composed of many of said particles, and firing the grain until sintered. Sintering is preferably carried out at 1300 DEG C. to 1600 DEG C. The comminuted material may be mixed with a binder prior to forming it into grain, and the grain fired at 700 DEG C. to 1100 DEG C. in an oxidizing atmosphere until the binder is removed. The comminuted material is preferably formed into grain by extruding it into rods and severing the rods.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US21489562A | 1962-08-06 | 1962-08-06 | |
| US21489462A | 1962-08-06 | 1962-08-06 | |
| US21489362A | 1962-08-06 | 1962-08-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1061816A true GB1061816A (en) | 1967-03-15 |
Family
ID=27396038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3091063A Expired GB1061816A (en) | 1962-08-06 | 1963-08-06 | Improvements in or relating to abrasive grain |
Country Status (3)
| Country | Link |
|---|---|
| FI (1) | FI47089C (en) |
| GB (1) | GB1061816A (en) |
| SE (1) | SE317617B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0171034A2 (en) * | 1984-08-08 | 1986-02-12 | Norton Company | Vitrified grinding wheel |
-
1963
- 1963-08-01 SE SE848463A patent/SE317617B/xx unknown
- 1963-08-05 FI FI151863A patent/FI47089C/en active
- 1963-08-06 GB GB3091063A patent/GB1061816A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0171034A2 (en) * | 1984-08-08 | 1986-02-12 | Norton Company | Vitrified grinding wheel |
| EP0171034A3 (en) * | 1984-08-08 | 1987-05-27 | Norton Company | Vitrified grinding wheel |
| EP0495536A2 (en) * | 1984-08-08 | 1992-07-22 | Norton Company | Vitrified grinding wheel |
| EP0495536A3 (en) * | 1984-08-08 | 1992-12-09 | Norton Company | Vitrified grinding wheel |
Also Published As
| Publication number | Publication date |
|---|---|
| SE317617B (en) | 1969-11-17 |
| FI47089C (en) | 1973-09-10 |
| FI47089B (en) | 1973-05-31 |
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