GB394669A - Improvements in or relating to bonded articles such as abrasive wheels, and methods of and means for making them - Google Patents
Improvements in or relating to bonded articles such as abrasive wheels, and methods of and means for making themInfo
- Publication number
- GB394669A GB394669A GB3169132A GB3169132A GB394669A GB 394669 A GB394669 A GB 394669A GB 3169132 A GB3169132 A GB 3169132A GB 3169132 A GB3169132 A GB 3169132A GB 394669 A GB394669 A GB 394669A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mix
- mould
- pressure
- consolidating
- preliminary
- 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
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/0009—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses
Abstract
394,669. Moulding abrasive and refractory articles. CARBORUNDUM CO., Ltd., Trafford Park Road, Manchester. -(Carborundum Co. ; Niagara Falls, New York, U.S.A.) Dec. 28, 1931, No. 31691/32. Divided on 394,667. [Class 87 (ii).] Moulded bonded articles, such as abrasive wheels and refractory articles, are made by placing in a mould an oversupply of a mix containing granular material and bond, applying to the mix in the mould a preliminary consolidating pressure which is substantially uniform over different small parts of the area of the surface of the mix by means of a deformable pressing member capable of conforming to the irregularities of the surface of the mix, removing excess mix and further consolidating the article under comparatively heavy pressure. The preliminary consolidating pressure may be employed in conjunction with a jolting of the mix as described in Specification 394,668. The final consolidation may be carried out so that a predetermined volume of the mix in the mould is consolidated to a predetermined volume, e.g. by means of a stop mould. Abrasive wheels may be made in the apparatus shown which includes a mould comprising a body ring 3, a strike-off ring 4, a base plate 5 and a central post 6 for forming the arbor hole in the abrasive wheel. The deformable pressing member may comprise a rubber bag 25, Fig. 1, held in place by a metal cap 24 secured to the top of the mould, the bag 25 having a supply tube 26 connected to a suitable source of fluid, e.g. air under pressure. Instead of applying a fluid pressure to the bag a closed fluid pressure cushion 41, Fig. 2, may be used, weights 42 imparting the desired pressures. After the material in the mould has been subjected to the preliminary consolidating pressure the strike-off ring 4 is removed, the top surface of the mix levelled off with a straight edge to remove the excess mix and the remaining mix subjected to the final consolidating pressure by means of a plunger. Specification 394,667 is also referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3169132A GB394669A (en) | 1931-12-28 | 1931-12-28 | Improvements in or relating to bonded articles such as abrasive wheels, and methods of and means for making them |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3169132A GB394669A (en) | 1931-12-28 | 1931-12-28 | Improvements in or relating to bonded articles such as abrasive wheels, and methods of and means for making them |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB394669A true GB394669A (en) | 1933-06-28 |
Family
ID=10326974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3169132A Expired GB394669A (en) | 1931-12-28 | 1931-12-28 | Improvements in or relating to bonded articles such as abrasive wheels, and methods of and means for making them |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB394669A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE958261C (en) * | 1943-10-08 | 1957-03-21 | Deutsche Edelstahlwerke Ag | Device for pressing powdery substances |
| CN109822467A (en) * | 2018-11-21 | 2019-05-31 | 郑州磨料磨具磨削研究所有限公司 | A kind of CBN resinoid bonded grinding tool and preparation method thereof |
-
1931
- 1931-12-28 GB GB3169132A patent/GB394669A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE958261C (en) * | 1943-10-08 | 1957-03-21 | Deutsche Edelstahlwerke Ag | Device for pressing powdery substances |
| CN109822467A (en) * | 2018-11-21 | 2019-05-31 | 郑州磨料磨具磨削研究所有限公司 | A kind of CBN resinoid bonded grinding tool and preparation method thereof |
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