CN107477120B - A kind of yaw synthesis brake block and preparation method thereof - Google Patents
A kind of yaw synthesis brake block and preparation method thereof Download PDFInfo
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- CN107477120B CN107477120B CN201710909620.0A CN201710909620A CN107477120B CN 107477120 B CN107477120 B CN 107477120B CN 201710909620 A CN201710909620 A CN 201710909620A CN 107477120 B CN107477120 B CN 107477120B
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- brake block
- yaw
- synthesis
- synthesis brake
- raised
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- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 31
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 40
- 238000002156 mixing Methods 0.000 claims abstract description 23
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 18
- 150000001875 compounds Chemical class 0.000 claims abstract description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 16
- 239000010439 graphite Substances 0.000 claims abstract description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 15
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims abstract description 15
- -1 aluminum phenol-formaldehyde Chemical compound 0.000 claims abstract description 13
- 229940049676 bismuth hydroxide Drugs 0.000 claims abstract description 12
- TZSXPYWRDWEXHG-UHFFFAOYSA-K bismuth;trihydroxide Chemical compound [OH-].[OH-].[OH-].[Bi+3] TZSXPYWRDWEXHG-UHFFFAOYSA-K 0.000 claims abstract description 12
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 12
- 239000013078 crystal Substances 0.000 claims abstract description 8
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000007493 shaping process Methods 0.000 claims abstract description 8
- 238000007592 spray painting technique Methods 0.000 claims abstract description 8
- 238000004806 packaging method and process Methods 0.000 claims abstract description 5
- 238000007711 solidification Methods 0.000 claims abstract description 5
- 230000008023 solidification Effects 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 18
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 8
- 238000004321 preservation Methods 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 5
- 229910052700 potassium Inorganic materials 0.000 claims description 5
- 239000011591 potassium Substances 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 238000001816 cooling Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 description 5
- 239000000470 constituent Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229940007424 antimony trisulfide Drugs 0.000 description 1
- NVWBARWTDVQPJD-UHFFFAOYSA-N antimony(3+);trisulfide Chemical compound [S-2].[S-2].[S-2].[Sb+3].[Sb+3] NVWBARWTDVQPJD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 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
- F16D69/023—Composite materials containing carbon and carbon fibres or fibres made of carbonizable material
-
- 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
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0034—Materials; Production methods therefor non-metallic
- F16D2200/0052—Carbon
-
- 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
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0082—Production methods therefor
- F16D2200/0086—Moulding materials together by application of heat and pressure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Braking Arrangements (AREA)
Abstract
The present invention relates to brake block preparation technical fields, especially a kind of yaw synthesis brake block and preparation method thereof, nano aluminum phenol-formaldehyde resin modified, graphite, high-strength compound is used to be incubated for agent, barium sulfate, iron powder, crystal whisker of hexa potassium titanate, molybdenum disulfide and bismuth hydroxide as raw material, pass through reasonable proportion design, it is prepared into brake block by the process of mixing, compacting, solidification, shaping, spray painting packaging, the feature for having stable frictional behaviour, braking steady, low wear, not damaging brake disc, environmental protection.
Description
Technical field
The present invention relates to brake block preparation technical field, especially a kind of yaw synthesis brake block and preparation method thereof.
Background technique
Wind energy has huge economic, society, the value of environmental protection and development prospect as a kind of non-polluting renewable resource,
Wind-powered electricity generation cause is greatly developed, wind-driven generator setting yaw tuning system can on the basis of greatly developing the renewable sources of energy in China
Most efficiently to utilize wind energy, wind energy utilization is improved, by taking the yaw of 1.5MW grade wind driven generator unit as an example, in During yaw,
Yaw pressure needs to be maintained at 25MPa or so, just can guarantee the normal operation of yaw system, and due to generating set yaw brake
Frequent movement easily leads to the pad wear that brakes, and then influences the security and stability of wind power generating set.
2016 end of the year China add up in wind-powered electricity generation installation, and 1.5MW wind-driven generator is occupied an leading position, about 5.6 ten thousand, mating
Yaw synthesize brake block spare part market scale about 1,120,000, but wind driven generator yaw brake block is most of to rely on from state
Outer import, urgent need solve the problems, such as brake block import, realize production domesticization.
Summary of the invention
In order to solve the above technical problems existing in the prior art, the present invention provide a kind of yaw synthesis brake block and
Preparation method.
It is achieved particular by following technical scheme:
A kind of yaw synthesis brake block, raw material includes by weight percentage are as follows: and nano aluminum phenol-formaldehyde resin modified 20~
30%, graphite 5~10%, high-strength compound are incubated for agent 7~10%, barium sulfate 26~32%, iron powder 8~12%, potassium hexatitanate crystalline substance
It must 3~8%, molybdenum disulfide 2~7%, bismuth hydroxide 10~20%.
The barium sulfate partial size is 20~75 μm.
The iron powder is spongy, purity >=98%, and granularity is 20~75 μm,.
The graphite is flakey, and purity >=92%, granularity is 20~40 μm,.
The molybdenum disulfide is pulvis, and purity >=97%, granularity is 20~45 μm.
The preparation method of above-mentioned yaw synthesis brake block, comprising the following steps:
(1) barium sulfate, high-strength compound mixing: are incubated for agent, nano aluminum phenol-formaldehyde resin modified, graphite, iron powder, potassium hexatitanate
Whisker, molybdenum disulfide and bismuth hydroxide mixing, are put into batch mixer, use rate of dispersion for 2600 ± 50r/min, mixing speed
For 90 ± 5r/min, the condition that mixing time is 20 ± 2min carries out mixing；
(2) suppress: the material that step (2) is obtained carries out weighing by synthesis brake block pressing parameter, pours into compacting tool set
In, while skeleton is placed in die cavity, under the conditions of 10~30MPa of pressing pressure, 140~160 DEG C of temperature, by 25~
The isothermal holding of 40min is suppressed and synthesis brake block is made；
(3) solidify: compacting synthesis brake block obtained being put into curing oven and is solidified；
(4) shaping: by the further recontour of brake block after solidification；
(5) brake block after shaping spray painting packaging: is subjected to spray painting processing, sealed package.
The barium sulfate, high-strength compound are incubated for agent and are first mixed, and silane coupling agent is added according to 1kg:30ml ratio
Stirring 3 times, mixing speed are 3600~3800r/min, and mixing time is 10~20min, every 5~10min of minor tick, stirring
Afterwards, it is dried under the conditions of 140 DEG C~160 DEG C.
The silane coupling agent is liquid.
The condition of cure are as follows: 80 DEG C are raised to from room temperature with the heating rate of 2 DEG C/min, heat preservation 115 when to 80 DEG C~
125min；The heating rate of 2 DEG C/min is raised to 100 DEG C from 80 DEG C again, and 115~125min is kept the temperature when to 100 DEG C；2 DEG C/min again
Heating rate be raised to 120 DEG C from 100 DEG C, 115~125min is kept the temperature when to 120 DEG C；The heating rate of 2 DEG C/min is from 120 again
DEG C 140 DEG C are raised to, keep the temperature 115~125min when to 140 DEG C；The heating rate of 2 DEG C/min is raised to 160 DEG C from 140 DEG C again, arrives
55~65min is kept the temperature at 160 DEG C；The heating rate of 2 DEG C/min is raised to 180 DEG C from 160 DEG C again, and heat preservation 10 when to 180 DEG C~
20min；Equipment is cooled to 60 DEG C or less and takes out synthesis brake block by air-cooled mode after heat preservation.
Beneficial effect
The present invention strengthens constituent element using nano aluminum phenol-formaldehyde resin modified as matrix constituent element, by the way that crystal whisker of hexa potassium titanate is added,
To strengthen to matrix constituent element；It is incubated for agent, iron powder constituent element by the way that high-strength compound is added, to increase rubbing for synthesis brake block
Wipe coefficient；By the way that crystalline flake graphite, bismuth hydroxide and molybdenum disulfide lubricant component is added, to increase synthesis brake block wear process
The smoothness on middle surface and the abrasion loss for reducing brake disc, by the way that barium sulfate filler constituent element is added, to reduce synthesis brake block
Cost.
The present invention is incubated for agent, barium sulfate, iron powder, potassium hexatitanate using nano aluminum phenol-formaldehyde resin modified, graphite, high-strength compound
Whisker, molybdenum disulfide and bismuth hydroxide pass through mixing, compacting, solidification, shaping, spray painting by reasonable proportion design for raw material
The process of packaging is prepared into brake block, has that stable frictional behaviour, braking is steady, low wear, does not damage brake disc, environmental protection
The characteristics of.
Specific embodiment
It is limited below with reference to specific embodiment technical solution of the present invention is further, but claimed
Range is not only limited to made description.
Following embodiment is all made of following preparation method:
(1) barium sulfate, high-strength compound mixing: are incubated for agent, nano aluminum phenol-formaldehyde resin modified, graphite, iron powder, potassium hexatitanate
Whisker, molybdenum disulfide and bismuth hydroxide mixing, are put into batch mixer, use rate of dispersion for 2600 ± 50r/min, mixing speed
For 90 ± 5r/min, the condition that mixing time is 20 ± 2min carries out mixing；
(2) suppress: the material that step (2) is obtained carries out weighing by synthesis brake block pressing parameter, pours into compacting tool set
In, while skeleton is placed in die cavity, under the conditions of 10~30MPa of pressing pressure, 140~160 DEG C of temperature, by 25~
The isothermal holding of 40min is suppressed and synthesis brake block is made；
(3) solidify: compacting synthesis brake block obtained being put into curing oven and is solidified；
(4) shaping: by the further recontour of brake block after solidification；
(5) brake block after shaping spray painting packaging: is subjected to spray painting processing, sealed package.
The barium sulfate, high-strength compound are incubated for agent and are first mixed, and silane coupling agent is added according to 1kg:30ml ratio
Stirring 3 times, mixing speed are 3600~3800r/min, and mixing time is 10~20min, every 5~10min of minor tick, stirring
Afterwards, it is dried under the conditions of 140 DEG C~160 DEG C.
The silane coupling agent is liquid.
The condition of cure are as follows: 80 DEG C are raised to from room temperature with the heating rate of 2 DEG C/min, heat preservation 115 when to 80 DEG C~
125min；The heating rate of 2 DEG C/min is raised to 100 DEG C from 80 DEG C again, and 115~125min is kept the temperature when to 100 DEG C；2 DEG C/min again
Heating rate be raised to 120 DEG C from 100 DEG C, 115~125min is kept the temperature when to 120 DEG C；The heating rate of 2 DEG C/min is from 120 again
DEG C 140 DEG C are raised to, keep the temperature 115~125min when to 140 DEG C；The heating rate of 2 DEG C/min is raised to 160 DEG C from 140 DEG C again, arrives
55~65min is kept the temperature at 160 DEG C；The heating rate of 2 DEG C/min is raised to 180 DEG C from 160 DEG C again, and heat preservation 10 when to 180 DEG C~
20min；Equipment is cooled to 60 DEG C or less and takes out synthesis brake block by air-cooled mode after heat preservation.
Embodiment 1
Formula: nano aluminum phenol-formaldehyde resin modified 20%, graphite 8%, high-strength compound are incubated for agent 9%, barium sulfate 29%, iron powder
9%, crystal whisker of hexa potassium titanate 8%, molybdenum disulfide 2%, bismuth hydroxide 15%；1.5MW is pressed to the brake block of 1 scheme of embodiment preparation
Wind driven generator yaw brake request carries out retardation test, average friction coefficient μIt is dynamic=0.35, synthesize brake block abrasion loss 0.62
×10-9cm3/N.m。
Embodiment 2
Formula: nano aluminum phenol-formaldehyde resin modified 18%, graphite 9%, high-strength compound are incubated for agent 7%, graphite 9%, barium sulfate
30%, iron powder 8%, crystal whisker of hexa potassium titanate 8%, molybdenum disulfide 2%, antimony trisulfide 18%；To the brake block of 2 scheme of embodiment preparation
Retardation test, average friction coefficient μ are carried out by 1.5MW wind driven generator yaw brake requestIt is dynamic=0.36, synthesis brake block abrasion
Amount 0.65 × 10-9cm3/N.m。
Embodiment 3, which is used, prepares brake block with the identical technical solution of embodiment 2, the difference is that, 3 scheme of embodiment
In, the treatment process that silane coupling agent is incubated for agent to barium sulfate, high-strength compound is not added；Respectively by embodiment 3, embodiment 1
The brake block prepared with embodiment 2 carries out retardation test according to by 1.5MW wind driven generator yaw brake request, and result is as follows
Table:
| Group | Mean coefficient of kinetic sliding friction μ | Abrasion loss cm3/N.m |
| Embodiment 1 | 0.35 | 0.62×10-9 |
| Embodiment 2 | 0.36 | 0.65×10-9 |
| Embodiment 3 | 0.42 | 0.74×10-9 |
By 1 table data it is found that being modified by the way that silane coupling agent is added to barium sulfate and high-strength compound incubation agent
Reason, the abrasion loss for helping to reduce brake block improve service life to promote the wearability of brake block.
Embodiment 4
Formula: nano aluminum phenol-formaldehyde resin modified 30%, graphite 5%, high-strength compound are incubated for agent 10%, barium sulfate 32%, iron
Powder 8%, crystal whisker of hexa potassium titanate 3%, molybdenum disulfide 2%, bismuth hydroxide 10%.
Embodiment 5
Formula: nano aluminum phenol-formaldehyde resin modified 20%, graphite 10%, high-strength compound are incubated for agent 7%, barium sulfate 26%, iron
Powder 12%, crystal whisker of hexa potassium titanate 3%, molybdenum disulfide 2%, bismuth hydroxide 20%.
Embodiment 6
Formula: nano aluminum phenol-formaldehyde resin modified 30%, graphite 5%, high-strength compound are incubated for agent 10%, barium sulfate 28%, iron
Powder 10%, crystal whisker of hexa potassium titanate 5%, molybdenum disulfide 2%, bismuth hydroxide 10%.
Claims (7)
1. a kind of yaw synthesis brake block, which is characterized in that raw material includes by weight percentage are as follows: nano aluminum modified phenolic
Resin 20~30%, graphite 5~10%, high-strength compound are incubated for agent 7~10%, barium sulfate 26~32%, iron powder 8~12%, six
Potassium titanate crystal whisker 3~8%, molybdenum disulfide 2~7%, bismuth hydroxide 10~20%；
The preparation method of above-mentioned yaw synthesis brake block, comprising the following steps:
(1) barium sulfate, high-strength compound mixing: are incubated for agent, nano aluminum phenol-formaldehyde resin modified, graphite, iron powder, potassium hexatitanate crystalline substance
Palpus, molybdenum disulfide and bismuth hydroxide mixing, are put into batch mixer, use rate of dispersion for 2600 ± 50r/min, mixing speed is
90 ± 5r/min, the condition that mixing time is 20 ± 2min carry out mixing；
(2) suppress: the material that step (2) is obtained carries out weighing by synthesis brake block pressing parameter, pours into compacting tool set,
Skeleton is placed in die cavity simultaneously, under the conditions of 10~30MPa of pressing pressure, 140~160 DEG C of temperature, by 25~40min's
Isothermal holding is suppressed and synthesis brake block is made；
(3) solidify: compacting synthesis brake block obtained being put into curing oven and is solidified；
(4) shaping: by the further recontour of brake block after solidification；
(5) brake block after shaping spray painting packaging: is subjected to spray painting processing, sealed package；
The barium sulfate, high-strength compound are incubated for agent and are first mixed, and silane coupling agent stirring 3 is added according to 1kg:30ml ratio
Secondary, mixing speed is 3600~3800r/min, and mixing time is 10~20min, every 5~10min of minor tick, after stirring,
It is dried under the conditions of 140 DEG C~160 DEG C.
2. yaw synthesis brake block as described in claim 1, which is characterized in that the barium sulfate partial size is 20~75 μm.
3. yaw synthesis brake block as described in claim 1, which is characterized in that the iron powder is spongy, purity >=98%,
Granularity is 20~75 μm.
4. as described in claim 1 yaw with synthesis brake block, which is characterized in that the graphite be flakey, purity >=92%,
Granularity is 20~40 μm.
5. as described in claim 1 yaw with synthesis brake block, which is characterized in that the molybdenum disulfide be pulvis, purity >=
97%, granularity is 20~45 μm.
6. the preparation method of yaw synthesis brake block as described in claim 1, which is characterized in that the silane coupling agent is liquid
Body.
7. the preparation method of yaw synthesis brake block as described in claim 1, which is characterized in that the condition of cure are as follows: with 2
DEG C/heating rate of min is raised to 80 DEG C from room temperature, 115~125min is kept the temperature when to 80 DEG C；Again the heating rate of 2 DEG C/min from
80 DEG C are raised to 100 DEG C, and 115~125min is kept the temperature when to 100 DEG C；The heating rate of 2 DEG C/min is raised to 120 DEG C from 100 DEG C again, arrives
115~125min is kept the temperature at 120 DEG C；The heating rate of 2 DEG C/min is raised to 140 DEG C from 120 DEG C again, and heat preservation 115 when to 140 DEG C~
125min；The heating rate of 2 DEG C/min is raised to 160 DEG C from 140 DEG C again, and 55~65min is kept the temperature when to 160 DEG C；2 DEG C/min again
Heating rate is raised to 180 DEG C from 160 DEG C, and 10~20min is kept the temperature when to 180 DEG C；Air-cooled mode is cooling by equipment after heat preservation
To 60 DEG C or less and take out synthesis brake block.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710909620.0A CN107477120B (en) | 2017-09-29 | 2017-09-29 | A kind of yaw synthesis brake block and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710909620.0A CN107477120B (en) | 2017-09-29 | 2017-09-29 | A kind of yaw synthesis brake block and preparation method thereof |
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| Publication Number | Publication Date |
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| CN107477120A CN107477120A (en) | 2017-12-15 |
| CN107477120B true CN107477120B (en) | 2019-08-23 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769353A (en) * | 2010-02-09 | 2010-07-07 | 衡水众成摩擦材料有限公司 | Yaw brake block and preparation method thereof |
| CN102329475A (en) * | 2011-07-22 | 2012-01-25 | 江苏安捷汽车配件有限公司 | Apocynum venetum fiber doped high environmentally-friendly type ceramic saloon car brake pad and preparation method thereof |
| CN103591196A (en) * | 2013-10-09 | 2014-02-19 | 贵州新安航空机械有限责任公司 | Yaw brake pad made of various materials |
| CN106282815A (en) * | 2016-08-18 | 2017-01-04 | 贵州新安航空机械有限责任公司 | A kind of powder metallurgy automobile brake block and preparation method |
| CN106433013A (en) * | 2016-08-29 | 2017-02-22 | 贵州新安航空机械有限责任公司 | Friction material for composition brake pad for high-power locomotive and preparation method |
-
2017
- 2017-09-29 CN CN201710909620.0A patent/CN107477120B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769353A (en) * | 2010-02-09 | 2010-07-07 | 衡水众成摩擦材料有限公司 | Yaw brake block and preparation method thereof |
| CN102329475A (en) * | 2011-07-22 | 2012-01-25 | 江苏安捷汽车配件有限公司 | Apocynum venetum fiber doped high environmentally-friendly type ceramic saloon car brake pad and preparation method thereof |
| CN103591196A (en) * | 2013-10-09 | 2014-02-19 | 贵州新安航空机械有限责任公司 | Yaw brake pad made of various materials |
| CN106282815A (en) * | 2016-08-18 | 2017-01-04 | 贵州新安航空机械有限责任公司 | A kind of powder metallurgy automobile brake block and preparation method |
| CN106433013A (en) * | 2016-08-29 | 2017-02-22 | 贵州新安航空机械有限责任公司 | Friction material for composition brake pad for high-power locomotive and preparation method |
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| CN107477120A (en) | 2017-12-15 |
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