CN114686170A - Brake shoe and preparation method thereof - Google Patents
Brake shoe and preparation method thereof Download PDFInfo
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- CN114686170A CN114686170A CN202210431030.2A CN202210431030A CN114686170A CN 114686170 A CN114686170 A CN 114686170A CN 202210431030 A CN202210431030 A CN 202210431030A CN 114686170 A CN114686170 A CN 114686170A
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- 238000002360 preparation method Methods 0.000 title abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000000945 filler Substances 0.000 claims abstract description 17
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 14
- 239000011230 binding agent Substances 0.000 claims abstract description 13
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 13
- 239000005011 phenolic resin 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
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052902 vermiculite Inorganic materials 0.000 claims abstract description 10
- 239000010455 vermiculite Substances 0.000 claims abstract description 10
- 235000019354 vermiculite Nutrition 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 239000000835 fiber Substances 0.000 claims abstract description 8
- 239000003365 glass fiber Substances 0.000 claims abstract description 8
- 210000002268 wool Anatomy 0.000 claims abstract description 8
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000012779 reinforcing material Substances 0.000 claims abstract description 7
- 239000000571 coke Substances 0.000 claims abstract description 5
- 239000002557 mineral fiber Substances 0.000 claims abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000010439 graphite Substances 0.000 claims abstract description 3
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 3
- 239000002994 raw material Substances 0.000 claims abstract description 3
- 238000010438 heat treatment Methods 0.000 claims description 12
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 7
- 239000004005 microsphere Substances 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims description 6
- 239000004793 Polystyrene Substances 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 229920002223 polystyrene Polymers 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 3
- 239000001095 magnesium carbonate Substances 0.000 claims description 3
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 claims description 2
- 238000006297 dehydration reaction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 7
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 229920003043 Cellulose fiber Polymers 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000007590 electrostatic spraying Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229920003986 novolac Polymers 0.000 description 2
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- DUIOKRXOKLLURE-UHFFFAOYSA-N 2-octylphenol Chemical compound CCCCCCCCC1=CC=CC=C1O DUIOKRXOKLLURE-UHFFFAOYSA-N 0.000 description 1
- ISAVYTVYFVQUDY-UHFFFAOYSA-N 4-tert-Octylphenol Chemical group CC(C)(C)CC(C)(C)C1=CC=C(O)C=C1 ISAVYTVYFVQUDY-UHFFFAOYSA-N 0.000 description 1
- PFTIVKCRALCOLB-UHFFFAOYSA-N [SiH4].[N] Chemical compound [SiH4].[N] PFTIVKCRALCOLB-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000009920 chelation Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229920003987 resole Polymers 0.000 description 1
- 239000003981 vehicle Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 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
- C09K3/149—Antislip compositions
-
- 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
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/08—Bands, shoes or pads; Pivots or supporting members therefor for internally-engaging brakes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The application relates to the technical field of wear-resistant materials, in particular to a brake shoe and a preparation method thereof, wherein the brake shoe comprises raw materials of a binder, a reinforcing material, a filler and a friction regulator, wherein: the binder at least comprises phenolic resin, and the total mass part of the binder is 40-60 parts; the reinforcing material comprises the following components in parts by mass: 50-70 parts of mineral fibers; 5-10 parts of glass fiber; 10-20 parts of calcium sulfate whiskers; 5-10 parts of aluminum silicate fiber; 10-15 parts of steel wool; the filler at least comprises barium sulfate and vermiculite, and the mass part of the filler is 70-90 parts; the friction regulator comprises the following components in parts by mass: 35-45 parts of coke; 10-20 parts of flake graphite. The brake shoe in this application can have heat-resisting wear resistant effect concurrently.
Description
Technical Field
The application relates to the technical field of wear-resistant materials, in particular to a brake shoe and a preparation method thereof.
Background
The brake shoe is an important component in a brake device and is generally crescent-shaped. In the process of stepping on the brake, the brake shoe pushes away outwards and rubs the inner wall of the brake drum, so that the vehicle is braked. The existing brake shoe is made of a semi-metal material and an NAO material, wherein the friction force of the brake shoe made of the semi-metal material can be weakened at a high temperature for a long time, the service life of the brake shoe in an automobile is short, the brake shoe made of the NAO material is poor in wear resistance, the friction coefficient is low, and the use requirement of the brake shoe is difficult to meet.
Disclosure of Invention
In order to solve the problems, the application provides the brake shoe and the preparation method thereof, and the brake shoe has good heat resistance and wear resistance.
The application discloses brake shoe, the raw materials include binder, reinforcing material, filler, friction modifier, wherein:
the binder at least comprises phenolic resin, and the total mass part of the binder is 40-60 parts;
the reinforcing material comprises the following components in parts by mass:
50-70 parts of mineral fibers;
5-10 parts of glass fiber;
10-20 parts of calcium sulfate whiskers;
5-10 parts of aluminum silicate fibers;
10-15 parts of steel wool;
the filler at least comprises barium sulfate and vermiculite, and the mass part of the filler is 70-90 parts;
the friction regulator comprises the following components in parts by mass:
35-45 parts of coke;
10-20 parts of flake graphite.
The main component of the brake shoe provided by the application is NAO material, and steel fiber is doped in the NAO material. In the brake shoe, the main strength function is realized by the reinforced material, in the application, the calcium sulfate crystal whisker and the aluminum silicate crystal whisker are added into the mineral reinforced material, wherein the calcium sulfate crystal whisker has good wear resistance, and the aluminum silicate fiber and the calcium sulfate crystal whisker are mixed, so that the overall wear resistance and the stability of the friction coefficient at high temperature are kept. The steel wool has better toughness, after the steel wool is added, the integral forming frequency is higher, the steel wool is not easy to crack, the flexibility is better, and the glass fiber has better strength, so that the integral steel wool is not easy to deform, and is more stable after being formed.
On the basis of the reinforcing material, barium sulfate and vermiculite are added as main fillers, so that the compatibility of the components is improved through the adsorption performance of the vermiculite while the rigidity is high, and meanwhile, the vermiculite has a large number of pore structures, so that the friction regulator has good adsorption performance, and the wear resistance of the brake shoe is further improved.
Optionally, the filler further comprises 5-7 parts of cellulose fibers.
The cellulose fibers can improve the viscosity and cohesion of the brake shoe, and the brake shoe has better strength as a whole.
Optionally, the filler comprises the following components in parts by mass:
40-50 parts of barium sulfate;
18-24 parts of heavy carbonate;
2-4 parts of alumina powder;
8-12 parts of vermiculite.
In the technical scheme, the heavy carbonate and the alumina powder are added into the filler, the alumina powder has better containing rows and stronger high-temperature resistance, and the adhesive can better bond the components together under the action of the alumina powder due to a certain grid structure, so that the cohesive force is improved. The heavy carbonate contributes to the improvement of the overall wear and heat resistance.
Optionally, the heavy carbonate comprises 10-14 parts of heavy calcium carbonate and 8-10 parts of heavy magnesium carbonate.
The composite system of calcium salt and magnesium salt is adopted, which is beneficial to ensuring that the brake shoe has more excellent wear resistance.
Optionally, the binder comprises the following components in parts by mass:
30-40 parts of phenolic resin;
15-20 parts of tire powder;
2-4 parts of iron oxide yellow.
The iron oxide has a good tackifying effect in the system, in the scheme, the tire powder prepared by recycling the tire waste is doped with iron oxide yellow and then used together with the phenolic resin, so that the viscosity is good, meanwhile, the utilization of the fertilizer is also beneficial to reducing the production cost of the brake shoe, and the influence on the performance of the brake shoe is small.
Optionally, the phenolic resin is octyl phenolic vulcanized resin.
The octyl vulcanized phenolic resin has better mechanical property, and in the scheme, compared with the common phenolic resin, the octyl vulcanized phenolic resin can obviously improve the pressure resistance of the brake shoe, increase the elastic modulus and reduce the possibility of deformation.
Optionally, the polystyrene microsphere further comprises 2-3 parts by mass of polystyrene microsphere.
On one hand, the styrene microspheres can be used as a lubricant, so that the components are more uniformly distributed, and meanwhile, in the hot pressing process, the styrene microspheres can also enable the whole structure after hot pressing to have better cohesion, and reduce lifting abrasion and cracking.
Optionally, the paint also comprises silazane in a mass part of 0.4-0.8.
Silazanes can promote the bonding performance of aluminum silicate fibers and glass fibers with a binder in a system and form a network structure. After the network structure is formed, the internal structure of the prepared brake shoe is more compact and stable, and structural damage caused by high temperature is not easy to generate.
Optionally, the lithium chloride is further included, wherein the mass portion of the lithium chloride is 0.1-0.3 min.
In the technical scheme, the lithium ions can improve the thermal stability of the material in the system, and the principle of the method can be that the multi-coupling property of the lithium ions can provide stronger cohesive force, so that the whole network structure tends to be more stable at high temperature, and the lithium ions can have better filling performance in the system at high temperature.
In addition, the application also provides a preparation method of the brake shoe, which comprises the following steps:
s1, fully mixing the materials, and carrying out vacuum dehydration for 10-15 min at the temperature of 60-80 ℃;
s2, carrying out hot press molding on the dehydrated material at 100-120 ℃, and keeping the pressure for 250-400S;
s3, carrying out heat treatment on the preliminarily formed product, wherein the heat treatment temperature is 100-185 ℃, the heat treatment time is 10-12 h, and the temperature is increased along with the time;
and S4, carrying out subsequent processing on the product after the heat treatment to obtain the brake shoe.
Through the technical scheme, the prepared brake shoe has good wear resistance, small friction coefficient change at high temperature, difficult deformation in the processing process and excellent performance.
To sum up, the application provides a brake shoe that has good wear resistance and heat resistance, compromises the advantage of semimetal brake shoe and NAO brake shoe.
Detailed Description
In the following examples, some of the materials were sourced as follows:
examples 1 to 23 and comparative examples 1 to 3 are brake shoes, and specific components thereof are shown in table 1.
Table 1, examples 1-23 and comparative examples 1-3
In examples 1 to 23 and comparative examples 1 to 3, the brake shoe was prepared as follows:
s1, mixing the materials, and dehydrating in vacuum at 80 ℃ for 15 min;
s2, carrying out hot press molding on the dehydrated material at 120 ℃, and keeping the pressure for 400S;
s3, carrying out heat treatment on the hot-pressed product, wherein the heat treatment temperature is increased from 100 ℃ to 185 ℃ within 10 h;
and S4, performing groove grinding, electrostatic spraying, accessory assembly, code spraying, plastic sealing and packaging on the heat-treated product to obtain the brake shoe.
In the above examples, the phenolic resins were all octyl phenolic cured resins.
Example 24 differs from example 2 in that the preparation method is specifically as follows:
1. mixing the above materials, and vacuum dehydrating at 60 deg.C for 10 min;
s2, hot-press forming the dehydrated material at 100 ℃, and keeping the pressure for 250S;
s3, carrying out heat treatment on the hot-pressed product, wherein the heat treatment temperature is increased from 100 ℃ to 185 ℃ within 12 h;
and S4, performing groove grinding, electrostatic spraying, accessory assembly, code spraying, plastic sealing and packaging on the heat-treated product to obtain the brake shoe.
In the above examples, the phenolic resins were all octyl phenolic cured resins.
Example 25 differs from example 22 in that the octyl phenol novolac cure resin is replaced with brominated p-tert-octyl phenol novolac cure resin.
For the above examples and comparative examples, the minimum value of the normal temperature friction coefficient, the high temperature friction coefficient, the minimum value of the secondary fade (93-288 ℃), the minimum value of the secondary recovery (149-93 ℃) friction coefficient (149-93 ℃) and the abrasion loss at 300 ℃ of the brake shoe were measured with reference to GB 5763-2008 automotive brake linings.
The experimental results of examples 1 to 25 and comparative examples 1 to 3 are shown in Table 2.
Table 2, Experimental results of examples and comparative examples
According to the experimental data, the brake shoe structure with good heat resistance and wear resistance can be obtained by adopting the technical scheme in the application. By comparing examples 1 to 3 with comparative examples 1 to 3, it can be easily found that the combination of the aluminum silicate fibers and the glass fibers and the combination of the vermiculite and the barium sulfate filler contribute to significantly improving the wear resistance and the stability of the friction coefficient at high temperature. In the further embodiment of the arrangement, after the iron oxide yellow is added by adjusting the type of the binder, the cohesiveness and the cohesive force of the brake shoe can be obviously improved, and further the friction coefficient stability is improved. The heavy carbonate is added into the filler, so that the wear resistance of the system can be improved, and the combination of calcium carbonate and magnesium carbonate is further adopted, so that the wear resistance can be better provided. The polystyrene microspheres help to provide better lubricating property and bonding property, so that the performance of each aspect is better improved. The coupling effect of the nitrogen silane in the system can also obviously improve the heat resistance stability and the wear resistance of the friction coefficient. The coordination and chelation performance of lithium ions and the filling capacity of a network structure can also provide better wear resistance and stability.
Note: in the above examples, the parameters of the partial materials were selected as shown in Table 3.
TABLE 3 composition parameter Table
| Components | Parameter(s) |
| Mineral fiber | Class A, tensile strength 0.5MPa |
| Glass fiber | Alkali-free glass fiber |
| Steel wool | 0.125mm |
| Octyl phenolic cured resin | Commercial 202 resin |
| Brominated p-tert-octyl phenolic resol | Commercially available SP-1055 resin |
| Tire powder | 40 mesh |
| Vermiculite | Monoclinic non-intumescent, with a density of 2.5g/cm3 |
| Coke | Coke surface of 30 meshes |
| Silazanes | CAS 556-67-2 |
| Polystyrene microsphere | Particle size 100. mu.M |
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (10)
1. A brake shoe is characterized in that raw materials comprise a binder, a reinforcing material, a filler and a friction regulator, wherein:
the binder at least comprises phenolic resin, and the total mass part of the binder is 40-60 parts;
the reinforcing material comprises the following components in parts by mass:
50-70 parts of mineral fibers;
5-10 parts of glass fiber;
10-20 parts of calcium sulfate whiskers;
5-10 parts of aluminum silicate fiber;
10-15 parts of steel wool;
the filler at least comprises barium sulfate and vermiculite, and the mass part of the filler is 70-90 parts;
the friction regulator comprises the following components in parts by mass:
35-45 parts of coke;
10-20 parts of flake graphite.
2. The brake shoe of claim 1 further comprising 5 to 7 parts of cellulosic fibers in said filler.
3. The brake shoe of claim 1 wherein said filler comprises the following components in parts by mass:
40-50 parts of barium sulfate;
18-24 parts of heavy carbonate;
2-4 parts of alumina powder;
8-12 parts of vermiculite.
4. The brake shoe of claim 3 wherein the heavy carbonate comprises 10 to 14 parts of heavy calcium carbonate and 8 to 10 parts of heavy magnesium carbonate.
5. The brake shoe of claim 1 wherein said binder comprises the following components in parts by mass:
30-40 parts of phenolic resin;
15-20 parts of tire powder;
2-4 parts of iron oxide yellow.
6. A brake shoe according to claim 5 wherein said phenolic resin is an octyl phenolic vulcanising resin.
7. The brake shoe according to claim 1, further comprising 2 to 3 parts by mass of polystyrene microspheres.
8. The brake shoe according to claim 1, further comprising 0.4 to 0.8 parts by mass of a silazane.
9. The brake shoe according to claim 1, further comprising 0.1 to 0.3 parts by mass of lithium chloride.
10. The method for preparing a brake shoe as claimed in any one of claims 1 to 9, comprising the steps of:
s1, fully mixing the materials, and carrying out vacuum dehydration for 10-15 min at the temperature of 60-80 ℃;
s2, carrying out hot press molding on the dehydrated material at 100-120 ℃, and keeping the pressure for 250-400S;
s3, carrying out heat treatment on the preliminarily formed product, wherein the heat treatment temperature is 100-185 ℃, the heat treatment time is 10-12 h, and the temperature is raised along with the time;
and S4, carrying out subsequent processing on the product after the heat treatment to obtain the brake shoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210431030.2A CN114686170A (en) | 2022-04-22 | 2022-04-22 | Brake shoe and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210431030.2A CN114686170A (en) | 2022-04-22 | 2022-04-22 | Brake shoe and preparation method thereof |
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| Publication Number | Publication Date |
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| CN114686170A true CN114686170A (en) | 2022-07-01 |
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| CN202210431030.2A Pending CN114686170A (en) | 2022-04-22 | 2022-04-22 | Brake shoe and preparation method thereof |
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| CN105419728A (en) * | 2015-12-08 | 2016-03-23 | 安徽创新电磁离合器有限公司 | Mixture of brake pad friction material |
| CN109780106A (en) * | 2019-01-31 | 2019-05-21 | 齐鲁工业大学 | A kind of automotive brake pads environment-friendly type high performance friction material and preparation method thereof |
| CN109812524A (en) * | 2019-01-31 | 2019-05-28 | 齐鲁工业大学 | A kind of automotive brake pads environment-friendly type blend matrix friction material composition |
| CN114135610A (en) * | 2021-12-02 | 2022-03-04 | 安徽飞鹰汽车零部件股份有限公司 | High-heat-dissipation low-recession heavy commercial drum brake pad and preparation method thereof |
| CN114321229A (en) * | 2022-01-04 | 2022-04-12 | 杭州嘉拓新材料科技有限公司 | Brake pad for automobile and production process thereof |
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Application publication date: 20220701 |