GB367176A - Improvements in or relating to friction material - Google Patents
Improvements in or relating to friction materialInfo
- Publication number
- GB367176A GB367176A GB5062/31A GB506231A GB367176A GB 367176 A GB367176 A GB 367176A GB 5062/31 A GB5062/31 A GB 5062/31A GB 506231 A GB506231 A GB 506231A GB 367176 A GB367176 A GB 367176A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- rubber
- strip
- asbestos
- litharge
- 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
- 239000002783 friction material Substances 0.000 title abstract 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 6
- 239000010425 asbestos Substances 0.000 abstract 4
- 239000000463 material Substances 0.000 abstract 4
- 229910052895 riebeckite Inorganic materials 0.000 abstract 4
- 239000005995 Aluminium silicate Substances 0.000 abstract 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract 3
- 239000005864 Sulphur Substances 0.000 abstract 3
- 235000012211 aluminium silicate Nutrition 0.000 abstract 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 abstract 3
- HTUMBQDCCIXGCV-UHFFFAOYSA-N lead oxide Chemical compound [O-2].[Pb+2] HTUMBQDCCIXGCV-UHFFFAOYSA-N 0.000 abstract 3
- YEXPOXQUZXUXJW-UHFFFAOYSA-N lead(II) oxide Inorganic materials [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 abstract 3
- 239000000395 magnesium oxide Substances 0.000 abstract 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 abstract 3
- 238000001035 drying Methods 0.000 abstract 2
- 238000010981 drying operation Methods 0.000 abstract 2
- 239000004615 ingredient Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- KJCVRFUGPWSIIH-UHFFFAOYSA-N 1-naphthol Chemical compound C1=CC=C2C(O)=CC=CC2=C1 KJCVRFUGPWSIIH-UHFFFAOYSA-N 0.000 abstract 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 239000000835 fiber Substances 0.000 abstract 1
- 239000000945 filler Substances 0.000 abstract 1
- 239000010439 graphite Substances 0.000 abstract 1
- 229910002804 graphite Inorganic materials 0.000 abstract 1
- 238000000227 grinding Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
- 239000012744 reinforcing agent Substances 0.000 abstract 1
- 239000012763 reinforcing filler Substances 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- 239000004636 vulcanized rubber Substances 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
- F16D69/021—Composition of linings ; Methods of manufacturing containing asbestos
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
A friction material suitable for brake linings comprises asbestos, vulcanized rubber, and kaolin as a filler. The material may, for example, contain: Asbestos fibre (45 per cent), magnesium oxide (3,6 per cent), rubber (18 per cent), sulphur (9 per cent), graphite (6 per cent), litharge (6 per cent), iron oxide (3 per cent), kaolin (9,1 per cent). The sulphur combines with the rubber to cure it, the litharge and magnesium oxide accelerate the curing, the kaolin is a reinforcing agent and filler and has a low coefficient of friction, the iron oxide acts to age the composition. In one process of manufacture, an equal weight of solvent such as naphthol or benzol is added to the rubber and the other ingredients are added to the softened rubber in a mixing machine. The mixture is then extruded through a nozzle having roughly the desired size of the brake lining on to a conveyer belt enclosed in a hood through which a current of warm air is drawn to effect partial drying. The extruder nozzle has a perforated plate whereby the asbestos fibres are roughly aligned in the length of the strip. The strip is passed between rollers one of which has projections to perforate the strip to facilitate the subsequent further drying operation effected in a vacuum oven. The strip is then passed through calender rolls to roughly form the material, cut into exact brake shoe length, placed in a flat mould and subjected to pressure and a temperature of about 300 DEG F. The strips are finally cured and curved by attaching to a drum placed in an oven at 350 DEG F. and finished off to exact dimensions by grinding operations. According to a dry process, the rubber and sulphur are first mixed cold in a machine of the Banbury type, the asbestos and other ingredients being then added and mixed and heated to render the rubber plastic. The subsequent operations starting with that of subjecting the material to pressure and heat in flat moulds is the same as in the wet process. The iron oxide litharge and magnesium oxide may be omitted. To reduce the time of the drying operation, the material may be extruded in a very thin strip, a number of thicknesses being placed in the flat mould.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US367176XA | 1930-02-20 | 1930-02-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB367176A true GB367176A (en) | 1932-02-18 |
Family
ID=21890211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5062/31A Expired GB367176A (en) | 1930-02-20 | 1931-02-17 | Improvements in or relating to friction material |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB367176A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2125723A (en) * | 1982-08-13 | 1984-03-14 | Borg Warner | Preparing friction clutch facings |
| GB2195944A (en) * | 1986-09-11 | 1988-04-20 | Toyota Motor Co Ltd | Process for manufacturing a moulded friction component member, in which grinding is not a required operation |
| US5809627A (en) * | 1993-05-15 | 1998-09-22 | G B Tools & Components Exports Limited | Manufacture of bonded articles |
| GB2393682A (en) * | 2002-08-17 | 2004-04-07 | Swintex | Moulding a plastics article and abrading the same |
-
1931
- 1931-02-17 GB GB5062/31A patent/GB367176A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2125723A (en) * | 1982-08-13 | 1984-03-14 | Borg Warner | Preparing friction clutch facings |
| GB2195944A (en) * | 1986-09-11 | 1988-04-20 | Toyota Motor Co Ltd | Process for manufacturing a moulded friction component member, in which grinding is not a required operation |
| US5809627A (en) * | 1993-05-15 | 1998-09-22 | G B Tools & Components Exports Limited | Manufacture of bonded articles |
| GB2393682A (en) * | 2002-08-17 | 2004-04-07 | Swintex | Moulding a plastics article and abrading the same |
| GB2393682B (en) * | 2002-08-17 | 2005-11-23 | Swintex | Method of manufacture of a moulded plastics construction product and moulded plastics construction product |
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