GB2297938A - Manufacturing a semi-metal brake lining - Google Patents
Manufacturing a semi-metal brake lining Download PDFInfo
- Publication number
- GB2297938A GB2297938A GB9503085A GB9503085A GB2297938A GB 2297938 A GB2297938 A GB 2297938A GB 9503085 A GB9503085 A GB 9503085A GB 9503085 A GB9503085 A GB 9503085A GB 2297938 A GB2297938 A GB 2297938A
- Authority
- GB
- United Kingdom
- Prior art keywords
- brake lining
- semi
- weight
- metal
- metal brake
- 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.)
- Withdrawn
Links
- 229910052751 metal Inorganic materials 0.000 title claims description 52
- 239000002184 metal Substances 0.000 title claims description 52
- 238000004519 manufacturing process Methods 0.000 title claims description 16
- 239000000463 material Substances 0.000 claims description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
- 239000000203 mixture Substances 0.000 claims description 15
- 239000011230 binding agent Substances 0.000 claims description 14
- 239000000654 additive Substances 0.000 claims description 13
- 239000006259 organic additive Substances 0.000 claims description 13
- 239000000843 powder Substances 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 8
- 210000002268 wool Anatomy 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 244000226021 Anacardium occidentale Species 0.000 claims description 4
- 239000003082 abrasive agent Substances 0.000 claims description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 4
- 235000020226 cashew nut Nutrition 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 229910052976 metal sulfide Inorganic materials 0.000 claims description 4
- 239000010445 mica Substances 0.000 claims description 4
- 229910052618 mica group Inorganic materials 0.000 claims description 4
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000012209 synthetic fiber Substances 0.000 claims description 4
- 229920002994 synthetic fiber Polymers 0.000 claims description 4
- 239000010455 vermiculite Substances 0.000 claims description 4
- 229910052902 vermiculite Inorganic materials 0.000 claims description 4
- 235000019354 vermiculite Nutrition 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims 2
- 238000009499 grossing Methods 0.000 claims 1
- 238000009966 trimming Methods 0.000 claims 1
- 239000010425 asbestos Substances 0.000 description 19
- 229910052895 riebeckite Inorganic materials 0.000 description 19
- 238000000034 method Methods 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 244000059549 Borneo rubber Species 0.000 description 1
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 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
- F16D69/027—Compositions based on metals or inorganic oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/02—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements, e.g. non-specified reinforcements, fibrous reinforcing inserts and fillers, e.g. particulate fillers, incorporated in matrix material, forming one or more layers and with or without non-reinforced or non-filled layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/58—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres
- B29C70/60—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres comprising a combination of distinct filler types incorporated in matrix material, forming one or more layers, and with or without non-filled layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2503/00—Use of resin-bonded materials as filler
- B29K2503/04—Inorganic materials
- B29K2503/06—Metal powders, metal carbides or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2709/00—Use of inorganic materials not provided for in groups B29K2703/00 - B29K2707/00, for preformed parts, e.g. for inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/16—Frictional elements, e.g. brake or clutch linings
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Inorganic Chemistry (AREA)
- Braking Arrangements (AREA)
Description
A METHOD OF MANUFACTURING A SEMI-METAL BRAKE LINING
BACKGROUND OF THE INVENTION
The present invention relates to a method of manufacturing a semi-metal brake lining, and more particularly to a method of manufacturing a brake lining in which binder, organic additives, inorganic additives, metal powder, etc. are properly mixed and the mixture is then combined with a adhesive-applied steel member to form a semi-metal brake lining which not only provides increased friction and higher safety in use, but also meets the environmental protection requirements without causing any public hazards and pollution.
Automobiles have become one of the important and necessary transportation means in our daily life. In the increasingly busy industrial and commercial society of nowadays, automobiles further play an important role in passengers and goods transportation. To provide users with higher safety and comfort in use, the power, transmission, and steering systems of an automobile, as well as the braking system and other safety systems thereof have-all become the focuses of the consumers. According to the statistics of accidents in
Taiwan Area, traffic accidents account for higher and higher percentage in recent years. Therefore, it has become one of the most important research and development aspects of most of the automotive industry to improve the auto parts and components in connection with the safety driving of cars.
For example, the braking system of an automobile mainly includes hydraulic-brake cylinders, hydraulic-brake lines, brake drums, etc. Among these components, brake lining is the major member which decides the stability of braking of a car. For automobiles using a traditional drum-brake system, brake lining is one of the critical points in the braking system examination. The superficial friction, temperature resistance, and stability of the brake lining shall directly affect the safe operation of the whole braking system, and accordingly, the safety and life of the driver and passengers. For these reasons, the structure and performance of a brake lining is actually an important issue which can never be ignored.
The brake lining available in and adopted by the automotive material dealers, automotive manufacturers, and automotiveservice business in the early stage is mainly made of asbestos. Asbestos itself has low and unstable coefficient of friction, especially when it is under a high temperature condition. The coefficient of friction of the asbestos lowers down quickly and results less effective braking action when the temperature of asbestos raises. Besides, asbestos has less durability at high temperature and is subject to wear easily. When the brake lining made of asbestos is operated under high temperature, it is not easy to recover its friction.In the event of bad weather, such as a heavy rain, asbestos brake lining tends to slip when it is wetted and therefore reversely influences the stable operation of the braking system of car and even seriously endangers the driver's and passengers' lives.
Asbestos itself is a kind of mineral containing silicates and has been used in large quantity to produce brake linings which will form a pollutant to the environment when they are manufactured and/or disposed. Moreover, many clinical experiments conducted by the medical field in recent years have proved that the asbestos has direct hazards to human body. In many advanced countries in the Europe and the
America, the manufacture and use of brake linings consistina of asbestos has long been explicitly prohibited. Brake linings consisting of other type mineral wool fibers, carbon, etc. have substituted for asbestos brake linings in recent years. Such brake linings have reduced but not completely eliminated pollution to the environment and have the same shortcomings and problems as those existed in the asbestos brake linings in view of their braking performance.
Therefore, they are not ideal and can not fully meet the requirements of practical use and environmental protection.
It is therefore tried by the inventor to develop a method of manufacturing a semi-metal brake lining to produce a type of brake lining which has higher coefficient of friction and better durability under high termperature and is more reliable in safe operation and environmental protection from the standpoint of manufacture and practice use.
SUMMARY OF THE INVENTION
A primary object of the present invention is to provide a method of manufacturing a semi-metal brake lining, in which a binder with steel wool fibers as the major material is evenly mixed with organic additives, inorganic additives, and metal powder and the mixture is then combined with a steel member of which the surface has first been acid-refined and applied with adhesive. The combined binder mixture and steel member is then shaped by means of pressure casting with thermal mould under specific temperature and pressure. The moulded product is trimmed at edges, grounded on surfaces, examined, and corrected to meet required specifications. A brake lining so produced has stable friction at both high and low temperatures and good durability even at high temperature, and is wearproof and non-slip even when it is wetted.Furthermore, the product is non-public-hazardous without the risk of causing any pollution to the environment. With the brake linings produced according to the present invention, the safe operation and reliable performance of the braking system of car can be largely enhanced. That is, the brake linings produced according to the present invention can be safely, practically, and widely used by the consumer public which is, of course, an important goal of the automotive industry.
BRIEF DESCRIPTION OF THE INVENTION
The present invention can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings, wherein
Fig. 1 is a flow-chart showing the method of the present invention;
Fig. 2 illustrates the main compositions of the mixed material for producing the semi-metal brake linings according to the present invention, and the percentage of each composition thereof;
Fig. 3 illustrates the major items and their respective percentage contained in the binder of the present invention::
Fig. 4 illustrates the major items and their respective percentage contained in the organic additives of the present invention;
Fig. 5 illustrates the major items and their respective percentage contained in the inorganic additives of the present invention;
Fig. 6 illustrates the major item and its percentage contained in the metal powder of the present invention:
Fig. 7 is a perspective of the brake lining produced according to the method of the present invention:
Fig. 8 compares the braking effect provided by the brake lining produced with the method of the present invention with that provided by a conventional brake lining; and
Fig. 9 illustrates the main compositions and their respective percentage contained in another embodiment of the mixed material for producing the brake lining according to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Please refer to the accompanying drawings in which like numerals and/or alphabets refer to like compositions and/or steps or procedures.
Fig. 1 is a flow-chart showing the method of the present invention to produce a semi-metal brake lining and Fig. 2 illustrates the main compositions and their respective percentage contained in the mixed material for producing the semi-metal brake lining according to the present invention.
As shown in Figs. 1 and 2, the brake lining produced according to the present invention is formed from an evenly mixed material which mainly consists of a particular binder 1 , organic additives 2, inorganic additives 3, and metal powder 4. More particularly, the binder 1 is about 63.5% +/- 3.175% of the mixed material by weight, the organic additives 2 are about 6.5% +/- 0.325% of the mixed material by weight , the inorganic additives 3 are about 25% +/ 1.258 of the mixed material by weight, and the metal powder 4 is about 5% +/- 0.025% of the mixed material by weight.
Please further refer to Figs. 3, 4, 5, and 6, the compositions 1, 2, 3, and 4 of the mixed material for the semi-metal brake lining produced according to the present invention each further consists of the following items:
Binder 1: a. Resin .............................. 12.6% +/- 0.63% b. Ground crude NBR rubber (4000-1) ... 1.5% +/- 0.075% c. Steel wool fibers .................. 39.3% +/- 1.965% d. Synthetic fibers (Aramic/Acrylic) . 2.3% +/- 0.115% e. Graphite ........................... 39.3% +/- 1.965% f. Molybdenum Disulfide ............... 4.88 +/- 0.24%
Organic additives 2: a. Cashew ............................. 76.9% +/- 3.845% b. Rubher cured ........................ 23.1% +/- 1.155%
Inorganic additives 3: a. Barytes ............................ 32% +/- 1.6% b. Vermiculite/Mica ................... 40% +/- 2.0% c.Metal sulfides ..................... 8% +/- 0.48 d. Abrasives ........................... 20% +/- 1.0%
Metal powder 4: a. Iron powder ........................ 1008 To produce the above brake lining, the method of the present invention mainly includes the following steps:
A. Prepare the binder 1, organic additives 2, inorganic
additives 3, and metal powder 4 according to the
percentages as described above and evenly mix them
together to form an evenly mixed material;
B. Prepare a steel member for use as a framework of the
brake lining, allow the steel member to be acid-refined
so as to remove impurities from the surface of the steel
member, evenly apply adhesive over the surface of the
steel member, combine the mixed material prepared in step
A with the acid-refined steel member;
C.Form a blank of the semi-metal brake lining by pressure
casting the combined mixed material and steel member in a
thermal mold under a temperature about 140 to 180C and a
pressure about 50 +/- 5 tons;
D. Trim the edges of the blank of the semi-metal brake
lining to smooth the burs thereof;
E. Grind and smooth the surface of the blank of the
semi-metal brake lining to form a finished product of the
semi-metal brake lining; and
F. Correct the dimensions of the ground and smoothed
semi-metal brake lining obtained from step E so that it
meets the required specification as shown in Fig. 7.
A finished product of the semi-metal brake lining as produced according to the above steps A through F may be further processed to meet different requirements before shipment, such as painting the steel member and packing the brake lining.
The semi-metal brake lining produced according to the steps of the present invention uses steel wool fibers as its basic and major material which is of non-pollution, provides excellent friction and effective braking action, and has following advantages over the conventional brake linings: (1) It is much better than the general asbestos brake linings not only in its resistance to high temperature but also in its good durability at high temperature.
(2) Unlike the asbestos brake linings, it does not slip when it is wetted in a bad weather.
(3) It has higher coefficient of friction than the asbestos brake linings and has good stability and wearability.
(4) Its friction returns much quickly than the asbestos brake linings do even it has been operated under a high temperature.
(5) The method of the present invention and the semi-metal brake lining produced according to the present invention have been tested under the Chinese National Standards (CNS)
Code No. 2586,3011 and by the Link Testing Laboratories,
Inc. based on SAE 1661 and AMECA (Automotive Manufacturers
Equipment Compliance Agency, Inc.) Test Standards. The result of tests (Attachment 1) indicates that the semi-metal brake lining with steel wool fibers as the main material and produced according to the method of the present invention can maintain its high performance even in a heavy brake condition. The same product has also been tested by the
Vehicle Research and Test Center for its braking effect.
The test result (Attachment 2) indicates that a braking system with the semi-metal brake linings of the present invention has shorter braking distance and is therefore safer than a braking system using conventional brake linings, as shown in Fig. 8.
(6) Unlike the asbestos brake lining of which the coefficient of friction shall quickly reduce and has less effective braking action when the temperature of the asbestos brake lining raises, the semi-metal brake lining produced according to the present invention, when being operated under high temperature and critical temperature, shall have enhanced high coefficient of friction if the temperature keeps raising. This special feature and function of the semi-metal brake lining to have enhanced high coefficient of friction at higher temperature exists because the high volume of nitrogen inside the semi-metal brake lining can be released within a very short time and thereby permits the brake lining to provide enhanced braking action at high temperature, which in turn provides users with higher safety, reliability, comfort, and stability in driving a car.What to be noted is that the content of nitrogen of the product depends on the compositions of its material.
(7) The semi-metal brake lining produced according to the present invention also has high coefficient of friction when it is operated under low temperature which is apparently superior than the conventional asbestos brake lining.
(8) The semi-metal brake lining produced according to the present invention has a normal instead of increased rate of wear as that of other components of the braking system, such as the brake disks, and can therefore, be used in a clutch system with the clutch plate of other transmission machinery or vehicles while the above described outstanding friction effect can still be achieved to permit the machinery or vehicles to extend their highest efficiency of engine. That is, the semi-metal brake lining produced according to the present invention guarantees higher safety in operation when a driver or machine operator operates the car or machine under a high load or even an overload condition and facing an emergency or unexpected situation in the operation.
As mentioned above, the method of the present invention can also be employed in making the clutch plate required in the clutch system of cars and/or transmission machinery to provide the same excellent friction effect and advantages as may be found in the brake linings so produced. However, since the coefficient of friction required by the clutch system differs from that required by the braking system, the percentage of each different composition of the material requires some proper adjustment while the other manufacturing steps are exactly the same as those used in making the brake linings.
Following is the percentages of different contents of the material for making a clutch plate according to the present invention:
For the main compositions of the mixed raw material: * Binder ............................... 62.8% +/- 3.148 * Organic additives ..................... 6.5% +/- 0.325% * Inorganic additives ................. 25.2% +/- 1.26% * Metal powder ........................ 5% +/- 0.025%
For the items contained in each composition:
Binder: a. Resin ............................... 12.8% +/- 0.64% b. Ground crude NBR rubbeer ........... 0% c. Steel wool fibers ..................... 37.6% +/- 1.88% d. Synthetic fibers (Aramid/Acrylic) .. 4.8% +/- 0.24% e. Graphite ........................... 40.0% +/- 2.0% f. Molybdenum disulfide ............... 4.8% +/- 0.24%
Organic additives: a. Cashew ............................ 100% b. Rubber cured ........................ 0%
Inorganic additives: a. Barytes ........................... 48% +/- 2.4% b. Vermiculite/Mica ................... 24% +/- 1.2% c. Metal sulfides ..................... 8% +/- 0.4% d. Abrasives ......................... 20% ± 1.0%
Metal powder: a. Iron powder ........................ 100%
Claims (6)
- What is claimed is: 1. A method of manufacturing a semi-metal brake lining, said semi-metal brake lining being manufactured from a mixed material comprising: a binder which is about 63.5% +/- 3.175% of said mixed material by weight and further comprises adequate percentages of resin, ground crude NBR rubber, steel wool fibers, synthetic fibers, graphite, and molybdenum disulfide; organic additives which are about 6.5% +/- 0.325% of said mixed material by weight and further comprises adequate percentages of cashew and rubber cured; inorganic additives which are about 25% +/- 1.25% of said mixed material by weight and further comprises adequate percentages of barytes, vermiculite/mica, metal sulfides, and abrasives; and metal powder which is about 5% +/- 0.025% of said mixed material by weight and mainly comprises iron powder; said method of manufacturing said semi-metal brake lining comprising following steps: A. Preparing said binder, said organic additives, said inorganic additives, and said metal powder according to their respective percentage as described above and evenly mix them together to form a mixed material; B. Preparing a steel member for use as a framework of said brake lining, allowing said steel member to be acid refined so as to remove impurities from the surface of said steel member, evenly applying adhesive over the surface of said steel member, combining said mixed material prepared in step A with said acid refined steel member; C. Forming a blank of said semi-metal brake lining by pressure casting said combined mixed material and said steel member in a thermal mold under a temperature about140 to 1800C and a pressure about 50 +/- 5 tons; D.Trimming the edges of said blank of said semi-metal brake lining to smooth burs thereon; E. Grinding and smoothing the surface of said blank of said semi-metal brake lining to form a finished product of said semi-metal brake lining; and F. Correcting the dimensions of said ground and smoothed semi-metal brake lining obtained from step E so that said semi-metal brake lining meets required specifications.
- 2. A method of manufacturing a semi-metal brake lining as claimed in claim 1, wherein said binder comprises about 12.6% +/- 0.63% resin by weight, about 1-.5% +/- 0.075% ground crude NBR rubber, about 39.3% +/- 1.965% steel wool fibers, about 2.3% +/- 0.115% synthetic fibers, about 39.3% +/- 1.965% graphite, and about 4.8% +/- 0.24% molybdenum disulfide by weight.
- 3. A method of manufacturing a semi-metal brake lining as claimed in claim 1, wherein said organic additives comprises about 76.9% +/- 3.845% cashew by weight and about 23.1% +/1.155% rubber cured by weight.
- 4. A method of manufacturing a semi-metal brake lining as claimed in claim 1, wherein said inorganic additives comprises about 32% +/- 1.6% barytes by weight, about 40% +/- 2.0% vermiculite/mica by wieght, about 8% +/- 0.4% metal sulfides by weight, and about 20% +/- 1.0% abrasives by weight.
- 5. A method of manufacturing a semi-metal brake lining as claimed in claim 1, wherein said mixed material comprises about 62.8% +/- 3.14% binder by weight, about
- 6.5% +/0.325% organic additives by weight, about 25.2% +/- 1.26% inorganic additives by weight, and about 5% +/- 0.025% metal powder by weight for producing clutch plates suitable for the clutch system of vehicles and other transmission machinery by following said steps of manufacturing said semi-metal brake lining.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9503085A GB2297938A (en) | 1995-02-17 | 1995-02-17 | Manufacturing a semi-metal brake lining |
| DE19513020A DE19513020A1 (en) | 1995-02-17 | 1995-04-06 | Semi-metal brake lining and clutch plate mfr. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9503085A GB2297938A (en) | 1995-02-17 | 1995-02-17 | Manufacturing a semi-metal brake lining |
| DE19513020A DE19513020A1 (en) | 1995-02-17 | 1995-04-06 | Semi-metal brake lining and clutch plate mfr. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9503085D0 GB9503085D0 (en) | 1995-04-05 |
| GB2297938A true GB2297938A (en) | 1996-08-21 |
Family
ID=26014191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9503085A Withdrawn GB2297938A (en) | 1995-02-17 | 1995-02-17 | Manufacturing a semi-metal brake lining |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE19513020A1 (en) |
| GB (1) | GB2297938A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001071212A1 (en) * | 2000-03-21 | 2001-09-27 | Sergei Nikolaevich Alexandrov | Composition for treating friction pairs and method of its preparation |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2526318B1 (en) | 2010-04-20 | 2019-12-25 | Federal-Mogul Friction Products GmbH | Copper-free friction material for brake pads |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1372222A (en) * | 1970-12-02 | 1974-10-30 | Precision Metalsmiths Inc | Method of making refractory articles |
| JPS60138031A (en) * | 1983-12-27 | 1985-07-22 | Nissan Motor Co Ltd | Fibrous molding for composite material |
| SU1414605A1 (en) * | 1986-02-26 | 1988-08-07 | Кишиневский Научно-Исследовательский Институт "Квант" | Method of producing abrasive tool |
-
1995
- 1995-02-17 GB GB9503085A patent/GB2297938A/en not_active Withdrawn
- 1995-04-06 DE DE19513020A patent/DE19513020A1/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1372222A (en) * | 1970-12-02 | 1974-10-30 | Precision Metalsmiths Inc | Method of making refractory articles |
| JPS60138031A (en) * | 1983-12-27 | 1985-07-22 | Nissan Motor Co Ltd | Fibrous molding for composite material |
| SU1414605A1 (en) * | 1986-02-26 | 1988-08-07 | Кишиневский Научно-Исследовательский Институт "Квант" | Method of producing abrasive tool |
Non-Patent Citations (2)
| Title |
|---|
| & JP 60 138 031 A * |
| WPI Abstract Accession No 89-052669/07 & SU 1414605A WPI Abstract Accession No 85-214430/35 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001071212A1 (en) * | 2000-03-21 | 2001-09-27 | Sergei Nikolaevich Alexandrov | Composition for treating friction pairs and method of its preparation |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9503085D0 (en) | 1995-04-05 |
| DE19513020A1 (en) | 1996-10-10 |
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