CN115321882A - Ceramic brake pad and preparation method thereof - Google Patents
Ceramic brake pad and preparation method thereof Download PDFInfo
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- CN115321882A CN115321882A CN202210917766.0A CN202210917766A CN115321882A CN 115321882 A CN115321882 A CN 115321882A CN 202210917766 A CN202210917766 A CN 202210917766A CN 115321882 A CN115321882 A CN 115321882A
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- 239000000919 ceramic Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 20
- 239000000843 powder Substances 0.000 claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 12
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 11
- 239000010439 graphite Substances 0.000 claims abstract description 11
- 229920001721 polyimide Polymers 0.000 claims abstract description 10
- 239000009719 polyimide resin Substances 0.000 claims abstract description 10
- 239000010455 vermiculite Substances 0.000 claims abstract description 10
- 229910052902 vermiculite Inorganic materials 0.000 claims abstract description 10
- 235000019354 vermiculite Nutrition 0.000 claims abstract description 10
- 239000002008 calcined petroleum coke Substances 0.000 claims abstract description 9
- 239000000835 fiber Substances 0.000 claims abstract description 8
- 229910052845 zircon Inorganic materials 0.000 claims abstract description 8
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims abstract description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910021383 artificial graphite Inorganic materials 0.000 claims abstract description 6
- KVNRLNFWIYMESJ-UHFFFAOYSA-N butyronitrile Chemical compound CCCC#N KVNRLNFWIYMESJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910001610 cryolite Inorganic materials 0.000 claims abstract description 6
- YPMOSINXXHVZIL-UHFFFAOYSA-N sulfanylideneantimony Chemical compound [Sb]=S YPMOSINXXHVZIL-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229920006231 aramid fiber Polymers 0.000 claims abstract description 5
- 239000000047 product Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 10
- 239000004033 plastic Substances 0.000 claims description 10
- 229920003023 plastic Polymers 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 9
- 238000012805 post-processing Methods 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 8
- 241000357293 Leptobrama muelleri Species 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 238000005498 polishing Methods 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000007639 printing Methods 0.000 claims description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 239000013065 commercial product Substances 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 description 13
- 230000008901 benefit Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000011056 performance test Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000002783 friction material Substances 0.000 description 2
- 239000006223 plastic coating Substances 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005332 obsidian Substances 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/20—Polyamides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a ceramic brake pad and a preparation method thereof, wherein the ceramic brake pad comprises the following components in percentage by mass: 10-16 parts of precipitated barium sulfate, 1-3 parts of aramid fiber, 1-5 parts of steel fiber, 2-8 parts of zircon powder, 4-8 parts of calcined petroleum coke, 1-4 parts of friction powder, 7-12 parts of polyimide resin, 2-8% of butyronitrile, 2-8 parts of flake graphite, 2-8 parts of artificial graphite, 5-10 parts of calcium sulfate whisker, 1-6 parts of yellow vermiculite, 3-8 parts of cryolite, 2-6 parts of antimony sulfide and 0-4 parts of high-temperature calcined alumina.
Description
Technical Field
The invention relates to the technical field of friction materials, in particular to a ceramic brake pad and a preparation method thereof.
Background
The brake block, also called brake block, in the braking system of car, brake block is the most crucial safety part, and the brake block plays decisive role to all good and bad brake effect. The brake pad is generally composed of a steel plate, a bonding heat insulation layer and a friction block, wherein the friction block mainly comprises a friction material and an adhesive, and is extruded on a brake disc and a brake drum to generate friction during braking, so that the aim of decelerating and braking the vehicle is fulfilled.
The existing commercial vehicle brake block has the following defects:
1) The brake pad of the commercial vehicle in the market has general wear resistance, and the number of kilometers in use generally reaches 6-10 kilometers. The commercial vehicle high-performance ceramic brake pad has high wear resistance and the service kilometer number is 12-15 kilometers.
2) The instant temperature generated by braking in general driving is about 250 ℃, if the emergency braking is stable in a high-speed driving state, the temperature is about 350 ℃, and the performance of the brake pad in a general market, which exceeds 450 ℃, can not lose in 400-500 ℃. The high-performance ceramic brake pad of the commercial vehicle can resist high temperature of more than 600 ℃.
3) At present, the automobile brake pads are made of asbestos-free materials, and the asbestos materials have better adsorption force due to longer fibers, but are easy to cause cancers. And the fiber substances in the raw materials mainly playing a friction role in the asbestos-free brake pad are short in length and are more easily ground and shed, namely, ash is more easily shed. The amount of dust generated is high compared to asbestos.
Aiming at the defects of the prior art, the applicant develops a commercial vehicle high-performance ceramic brake pad and an industrial preparation method thereof, adopts asbestos-free materials and a novel material, and has the advantages of low wear rate, wear resistance, difficulty in ash falling and environmental friendliness. Meanwhile, the ceramic brake pad has the advantages of high wear resistance, simple preparation process and low use cost for users.
Disclosure of Invention
The invention aims to provide a ceramic brake pad and a preparation method thereof, and aims to solve the problems of low friction strength, complex flow of batch production and high cost of the conventional brake pad in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a ceramic brake pad comprises the following components in percentage by mass: 10-16 parts of precipitated barium sulfate, 1-3 parts of aramid fiber, 1-5 parts of steel fiber, 2-8 parts of zircon powder, 4-8 parts of calcined petroleum coke, 1-4 parts of friction powder, 7-12 parts of polyimide resin, 2-8% of butyronitrile, 2-8 parts of flake graphite, 2-8 parts of artificial graphite, 5-10 parts of calcium sulfate whisker, 1-6 parts of yellow vermiculite, 3-8 parts of cryolite, 2-6 parts of antimony sulfide and 0-4 parts of high-temperature calcined alumina.
Preferably, the mass percentage of the polyimide resin is 10%.
Preferably, the mass percent of barium sulfate in the precipitated barium sulfate is not less than 85%.
Preferably, the mass percent of zirconium in the zircon powder is not less than 63%.
Preferably, the calcined petroleum coke is a calcined petroleum coke raw material with 40-60 meshes and the C content of not less than 98%.
Preferably, the yellow vermiculite is 40-60 mesh yellow vermiculite.
Preferably, the flake graphite is large flake graphite, and the carbon content of the flake graphite is 85% after being screened by a 100-mesh screen.
A preparation method of a ceramic brake pad comprises the following steps:
the method comprises the following steps: mixing and pressing, namely proportioning the prepared raw materials according to a certain proportion, putting the mixture into a 350Kg mixer to mix the raw materials for 13 minutes, and fully and uniformly stirring;
step two: heat treatment, the temperature of the press is raised to 190 ℃ +/-10 ℃, the press program is adjusted to press for 6 times, 5 times of air release are carried out, and the following operations are carried out: maintaining the pressure for 15 seconds, and deflating for 5 seconds; maintaining the pressure for 15 seconds, and deflating for 5 seconds; keeping the pressure for 10 seconds, and deflating for 5 seconds; keeping the pressure for 10 seconds, and deflating for 5 seconds; maintaining the pressure for 10 seconds and deflating for 5 seconds; keeping the pressure for 1200 seconds; weighing a mixture with a specified weight according to a pressed product, putting the mixture into a die cavity, uniformly raking, putting a customized steel backing, and performing pressing according to the program setting;
step three: post-processing, namely performing post-processing on the blank obtained in the step to obtain a commercially available product, wherein the post-processing method specifically comprises the following steps:
1) Polishing, namely polishing the steel back of the disc to remove impurities on the surface of the steel back;
2) A combined grinder is used for grinding and grooving, and the required shape is processed according to a drawing;
3) Spraying plastics, namely spraying plastics on the surface of the product, and spraying paint on the surface of the steel back and the side surface of the product;
4) Printing mark external inspection, printing product model, production date and retrospective information on the surface of the mark according to the requirements of customers;
5) And (5) plastic packaging, namely plastic packaging to obtain a commercial product.
Compared with the prior art, the invention has the beneficial effects that:
the ceramic brake pad and the preparation method thereof comprise the following components in percentage by mass: 10-16 parts of precipitated barium sulfate, 1-3 parts of aramid fiber, 1-5 parts of steel fiber, 2-8 parts of zircon powder, 4-8 parts of calcined petroleum coke, 1-4 parts of friction powder, 7-12 parts of polyimide resin, 2-8 parts of butyronitrile, 2-8 parts of flake graphite, 2-8 parts of artificial graphite, 5-10 parts of calcium sulfate whisker, 1-6 parts of vermiculite, 3-8 parts of cryolite, 2-6 parts of antimony sulfide and 0-4 parts of high-temperature calcined alumina, wherein the polyimide resin in the main components has the property of resisting high temperature of over 600 ℃, and the common resin can lose efficacy at about 400 ℃, so compared with a conventional brake pad, the high-temperature-resistant and wear-resistant strength brake pad has the advantages of high temperature resistance and high wear resistance, can be produced in batch through the steps of material mixing, pressing, heat treatment, post-processing and the like, and has the advantages of simple production process and low use cost for users.
Drawings
FIG. 1 is a flow chart of the method of the present invention.
FIG. 2 is a table of friction performance test data for a high performance ceramic brake pad produced by the method of the present invention at room temperature of 10 ℃;
FIG. 3 is a graph of the friction performance of a high performance ceramic brake pad produced by the method of the present invention at room temperature of 10 ℃;
FIG. 4 is a table of friction performance test data for an automotive brake lining produced by a conventional formulation process at 21 deg.C room temperature.
FIG. 5 is a graph showing the frictional properties of an automotive brake lining manufactured by a conventional formulation process at room temperature of 21 ℃.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a technical scheme that: a ceramic brake pad comprises the following components in percentage by weight:
precipitating barium sulfate (more than or equal to 85%): 10-16, aramid: 1-3%, steel fiber (steel wool): 1-5% of zircon powder (zirconium is more than or equal to 63%): 2-8, calcining petroleum coke (40-60 meshes, and C is more than or equal to 98%): 4-8%, friction powder: 1-4%, polyimide resin: 7-12%, butyronitrile: 2-8%, large flake graphite (-185): 2-8%, artificial graphite: 2-8%, calcium sulfate whisker: 5-10%, yellow vermiculite (40-60 mesh): 1-6, cryolite: 3-8%, antimony sulfide: 2-6%, high-temperature calcined alumina: 0 to 4 percent. Compared with the limited purchase technology, the obsidian has the improvement point that the main component comprises 7-12% of polyimide resin, the resin has the property of resisting high temperature of over 600 ℃, and the common resin can lose efficacy at about 400 ℃, so that the high temperature resistance of the brake pad is greatly improved compared with the conventional brake pad.
Referring to fig. 1, the production process mainly includes: mixing materials, pressing, heat treatment, polishing, combined grinding, plastic spraying, marking, external inspection, plastic coating, packaging and the like. Specifically, the method comprises the following steps:
1. mixing materials: the prepared raw materials are proportioned according to a certain proportion, put into a 350Kg mixer to be mixed for 13 minutes, and fully and uniformly stirred.
Pressing: the press temperature rose to 190 ℃. + -. 10 ℃.
The press program was adjusted to press 6 times, release 5 times (depending on product size and charge)
The first dwell time was 15 seconds and the air bleed was 5 seconds. The second dwell time was 15 seconds and the air bleed was 5 seconds. And maintaining the pressure for 10 seconds for the third time, and deflating for 5 seconds. And keeping the pressure for 10 seconds for the fourth time, and deflating for 5 seconds. And maintaining the pressure for 10 seconds for 5 seconds for the fifth time. The sixth final hold was for 20 minutes (1200 seconds).
A 400T press pressure of 18MPa (depending on product size and charge) was used to discharge 6 chips per cycle.
And weighing the mixture according to the specified weight of the pressed product, and putting the mixture into a die cavity and uniformly scraping. And putting a customized steel backing. The pressing is performed according to the above-described program setting.
2. And (3) curing: the products are placed according to the specified quantity, and are put into an oven frame by frame.
Setting an oven program: raising the room temperature to 100 ℃ after 2h, keeping the temperature at 100 ℃ for 1h, raising the temperature from 100 ℃ to 160 ℃ after 2h, keeping the temperature at 160 ℃ for 2h, raising the temperature from 160 ℃ to 180 ℃ after 1h, keeping the temperature at 180 ℃ for 2h, raising the temperature from 180 ℃ to 200 ℃ after 1h, keeping the temperature at 200 ℃ for 8h, stopping the program, opening the oven, and cooling at normal temperature. The whole process took 19h.
3. Post-processing:
polishing the steel back of the disc: remove the impurities on the surface of the steel backing
Grinding and grooving by a combined grinding machine: processing the required shape according to the drawing
Product surface plastic spraying: spray paint for steel backing surface and product side surface
Product marking: product type, date of manufacture retrospective (and customer requirements)
And (5) plastic coating and packaging of the product.
The ceramic brake pad and the preparation method thereof comprise the following components in percentage by mass: 10-16 parts of precipitated barium sulfate, 1-3 parts of aramid fiber, 1-5 parts of steel fiber, 2-8 parts of zircon powder, 4-8 parts of calcined petroleum coke, 1-4 parts of friction powder, 7-12 parts of polyimide resin, 2-8% of butyronitrile, 2-8 parts of flake graphite, 2-8 parts of artificial graphite, 5-10 parts of calcium sulfate whisker, 1-6 parts of vermiculite, 3-8 parts of cryolite, 2-6 parts of antimony sulfide and 0-4 parts of high-temperature calcined alumina.
After putting into the market, compare in ordinary braking piece, life promotes about 2 times, and practice test verifies that the high performance ceramic brake block material of the commercial car that this scheme provided has that brake performance is good, advantage that life is high.
In order to verify the friction performance of the recycled material automobile brake lining produced by the method, under the condition that the pressing force is 0.98Mpa and the dual material is HT250/HB185, the friction performance of the recycled material automobile brake lining is tested by adopting a standard GB5736-2008 through an XD-MSM friction performance testing machine, the test result is shown in a figure 2, then under the same condition, the friction performance of the automobile brake lining produced by the conventional formula process is also tested, a figure 3 is a friction performance curve diagram, and figures 4 and 5 are friction performance test data table curves of the automobile brake lining produced by the conventional formula process at the room temperature of 21 ℃, the comparison shows that the automobile brake lining produced by the recycled material has no cracks, bulges and the like, the friction surface has no obvious scratch (weight abrasion is 0.45 g), the abrasion of other formula products is generally about 1.1g, and compared with the formula product, the service life of the recycled material automobile brake lining has obvious advantages, and the specific performance parameters are also obviously better than those of the two.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The ceramic brake pad is characterized by comprising the following components in percentage by mass: 10-16 parts of precipitated barium sulfate, 1-3 parts of aramid fiber, 1-5 parts of steel fiber, 2-8 parts of zircon powder, 4-8 parts of calcined petroleum coke, 1-4 parts of friction powder, 7-12 parts of polyimide resin, 2-8 parts of butyronitrile, 2-8 parts of flake graphite, 2-8 parts of artificial graphite, 5-10 parts of calcium sulfate whisker, 1-6 parts of vermiculite, 3-8 parts of cryolite, 2-6 parts of antimony sulfide and 0-4 parts of high-temperature calcined alumina.
2. A ceramic brake pad according to claim 1, wherein the polyimide resin is present in an amount of 10% by mass.
3. The ceramic brake pad of claim 1, wherein the mass percent of barium sulfate in the precipitated barium sulfate is not less than 85%.
4. The ceramic brake pad of claim 1, wherein the zircon powder comprises not less than 63% by mass of zirconium.
5. The ceramic brake pad as claimed in claim 1, wherein the calcined petroleum coke is 40-60 mesh, and the calcined petroleum coke contains not less than 98% of C.
6. A ceramic brake pad according to claim 1, wherein the yellow vermiculite is 40-60 mesh yellow vermiculite.
7. A ceramic brake pad according to claim 1, wherein the flake graphite is a large flake graphite having a carbon content of 85% passing through a 100 mesh screen.
8. The preparation method of the ceramic brake pad is characterized by comprising the following steps:
the method comprises the following steps: mixing and pressing, namely proportioning the prepared raw materials according to a certain proportion, putting the mixture into a 350Kg mixer to mix the raw materials for 13 minutes, and fully and uniformly stirring;
step two: and (3) performing heat treatment, wherein the temperature of a press is increased to 190 +/-10 ℃, the program of the press is adjusted to press for 6 times, and gas is released for 5 times, and the following operations are performed: maintaining the pressure for 15 seconds, and deflating for 5 seconds; maintaining the pressure for 15 seconds, and deflating for 5 seconds; keeping the pressure for 10 seconds, and deflating for 5 seconds; keeping the pressure for 10 seconds, and deflating for 5 seconds; maintaining the pressure for 10 seconds and deflating for 5 seconds; keeping the pressure for 1200 seconds; weighing a mixture with a specified weight according to a pressed product, putting the mixture into a die cavity, uniformly raking, putting a customized steel backing, and performing pressing according to the program setting;
step three: post-processing, namely performing post-processing on the blank obtained in the step to obtain a commercially available product, wherein the post-processing method specifically comprises the following steps:
1) Polishing, namely polishing the steel back of the disc to remove impurities on the surface of the steel back;
2) A combined grinder is used for grinding and grooving, and the required shape is processed according to a drawing;
3) Spraying plastics, namely spraying plastics on the surface of the product, and spraying paint on the surface of the steel back and the side surface of the product;
4) Printing mark external inspection, printing product model, production date and retrospective information on the surface of the mark according to the requirements of customers;
5) And (4) plastic packaging, and plastic packaging to obtain a commercial product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210917766.0A CN115321882A (en) | 2022-08-01 | 2022-08-01 | Ceramic brake pad and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210917766.0A CN115321882A (en) | 2022-08-01 | 2022-08-01 | Ceramic brake pad and preparation method thereof |
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|---|---|---|---|---|
| JPH0693110A (en) * | 1991-10-23 | 1994-04-05 | Nisshinbo Ind Inc | Asbestos-free friction material |
| CN102977849A (en) * | 2012-10-30 | 2013-03-20 | 十堰九鹏摩擦材料有限公司 | Synthetic abrasive material with ground dust as main body and friction material |
| CN107353029A (en) * | 2017-08-29 | 2017-11-17 | 瑞安市洪江车业有限公司 | A kind of ceramic friction base material of brake block |
| CN108443376A (en) * | 2018-03-22 | 2018-08-24 | 捷通磨擦材料（昆山）有限公司 | A kind of explosion-proof mine mechanical brake piece and preparation method thereof |
| CN109707773A (en) * | 2018-12-27 | 2019-05-03 | 湖北飞龙摩擦密封材料股份有限公司 | A kind of low noise high temperature resistant drum type friction piece and preparation method thereof by the production of three layered materials |
| CN112980392A (en) * | 2021-03-03 | 2021-06-18 | 张豪 | Wear-resistant low-noise soft brake pad and preparation method thereof |
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2022
- 2022-08-01 CN CN202210917766.0A patent/CN115321882A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0693110A (en) * | 1991-10-23 | 1994-04-05 | Nisshinbo Ind Inc | Asbestos-free friction material |
| CN102977849A (en) * | 2012-10-30 | 2013-03-20 | 十堰九鹏摩擦材料有限公司 | Synthetic abrasive material with ground dust as main body and friction material |
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