CN108730383A - The preparation method of high ferro braking system brake head brake pad - Google Patents
The preparation method of high ferro braking system brake head brake pad Download PDFInfo
- Publication number
- CN108730383A CN108730383A CN201710290192.8A CN201710290192A CN108730383A CN 108730383 A CN108730383 A CN 108730383A CN 201710290192 A CN201710290192 A CN 201710290192A CN 108730383 A CN108730383 A CN 108730383A
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- China
- Prior art keywords
- minutes
- braking system
- temperature
- high ferro
- brake pad
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- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 24
- 239000000835 fiber Substances 0.000 claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 238000005245 sintering Methods 0.000 claims abstract description 12
- 239000002131 composite material Substances 0.000 claims abstract description 8
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000725 suspension Substances 0.000 claims abstract description 4
- 238000010792 warming Methods 0.000 claims description 13
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 11
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 11
- -1 polytetrafluoroethylene Polymers 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 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
-
- 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
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/02—Moulding by agglomerating
- B29C67/04—Sintering
-
- 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
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
-
- 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
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
- F16D69/025—Compositions based on an organic binder
- F16D69/026—Compositions based on an organic binder containing fibres
-
- 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
-
- 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
-
- 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)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Braking Arrangements (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
The invention discloses the preparation methods of high ferro braking system brake head brake pad, it is characterised in that：This preparation method is to make high ferro braking system brake head brake pad with modified polytetrafluoroethylcomposite composite material, and carbon fibre powder is added in suspension injecting tetrafluoroethylene powder to reduce the friction coefficient of material, improves the wearability of brake pad.Modified polytetrafluoroethylcomposite composite material moulding process includes preforming, sintering and cooling three steps.With the high ferro braking system brake head brake pad rub resistance of its preparation, high and low temperature resistance and corrosion resistance, service life, safety and stability increase substantially, and advantage is apparent.
Description
Technical field
The present invention relates to the preparation methods of high ferro braking system brake head brake pad, belong to field of compound material.
Background technology
China's high ferro need to pass through high and cold, desert area, and environment temperature is -50 DEG C~50 DEG C, therefore high ferro all parts are all
More harsh service condition is faced, (braking will produce very the particularity of high ferro braking system running environment in high-speed cruising
Big frictional force and temperature) high ferro braking system brake head brake pad require have the characteristics such as rub resistance, high and low temperature resistance and corrosion resistance.
Polytetrafluoroethylene (PTFE) has abnormal chemical stability, excellent electrical insulating property, low-friction coefficient, excellent self-lubricating
Etc. performances, but also have the shortcomings that cold flow, not wear-resisting, poor dimensional stability and thermal conductance are poor, in suspension injecting tetrafluoroethylene powder
Carbon fibre powder is added to reduce the friction coefficient of material, improves the wearability of brake pad.Modified polytetrafluoroethylcomposite composite material
Moulding process includes preforming, sintering and cooling three steps.With the high ferro braking system brake head brake pad antifriction of its preparation
It wipes, high and low temperature resistance and corrosion resistance, service life, safety and stability increase substantially, and advantage is apparent.
Invention content
The object of the present invention is to provide a kind of high ferro braking system brake head brake pads, have service life length, safety
The good feature with stability.
In order to achieve the above objectives, the technical solution adopted by the present invention is：It is made of modified polytetrafluoroethylcomposite composite material high
Iron braking system brake head brake pad, addition mass percent is in suspension injecting tetrafluoroethylene powder：The carbon of 5%-35%
Fiber powder reduces the friction coefficient of material, improves the wearability of brake pad.Moulding process includes preforming, sintering and cooling three
A step.
Sintering process directly influences molecular weight, crystallinity and the voidage of product, influences the physical property of product；Sintering
The quality completed with cooling procedure also affects the size of residual pressure and distribution in product, will cause to make if temperature control is improper
Product warpage, deformation or even cracking set rational temperature and time through repeatedly debugging.
The present invention also provides the preparation method of above-mentioned high ferro braking system brake head brake pad, step includes：
A, raw material sampling：Select suspended PTFE particle diameter：100-130 μm, standard relative density 2.15g/cm3；Carbon
Fiber powder, fibre diameter 8um, fineness are 350 mesh.
B, mixed at high speed：Batch mixing is carried out to polytetrafluorethylepowder powder and carbon fibre powder using high-speed mixer, so that poly-
Tetrafluoroethene powder and carbon fibre powder homogeneous blend, when batch mixing, select rotating speed 1500r/min, are mixed into uniformly.
C, it is molded preforming：Preforming pressure 600-650kg/cm2
D, sintering process：140 DEG C are at the uniform velocity warming up to from room temperature through 40 minutes, keeps the temperature 30 minutes；It was at the uniform velocity risen through 60 minutes again
Temperature keeps the temperature 30 minutes to after 240 DEG C；Then after 120 minutes are at the uniform velocity warming up to 340 DEG C, 30 minutes are kept the temperature；It is even through 50 minutes again
After speed is warming up to 365 DEG C, 30 minutes are kept the temperature；Again after 60 minutes are at the uniform velocity warming up to 375 DEG C, 240 minutes are kept the temperature.
E, cooling technique：From 375 DEG C of the maximum temperature of sintering, 365 DEG C were at the uniform velocity cooled to through 60 minutes, keeps the temperature 30 minutes；
340 DEG C were at the uniform velocity cooled to through 30 minutes again, keeps the temperature 20 minutes；280 DEG C were at the uniform velocity cooled to through 40 minutes again, then natural cooling again
To 200 DEG C.
F, it machines：Final products are machined out by attached drawing 1 to product after cooling
High ferro braking system brake head brake pad prepared by the present invention, fully meets customer requirement, to high ferro using result
Reliability, safety, stability and the service life of braking system play the role of very important, and advantage is apparent.
Description of the drawings
Fig. 1 is the manuscript of high ferro braking system brake head brake pad
Specific implementation mode
Embodiment 1
The preparation method of this high ferro braking system brake head brake pad, step include：
A, raw material sampling：Select suspended PTFE particle diameter：100-130 μm, standard relative density 2.15g/cm3；Carbon
Fiber powder, fibre diameter 8um, fineness are 350 mesh.
B, mixed at high speed：Batch mixing is carried out to polytetrafluorethylepowder powder and carbon fibre powder using high-speed mixer, so that poly-
Tetrafluoroethene powder and carbon fibre powder homogeneous blend, when batch mixing, select rotating speed 1500r/min, are mixed into uniformly, the carbon of addition
Cellulose fiber powder accounts for gross mass percentage with polytetrafluoroethylene (PTFE)：7%
C, it is molded preforming：Preforming pressure 600-650kg/cm2
D, sintering process：140 DEG C are at the uniform velocity warming up to from room temperature through 40 minutes, keeps the temperature 30 minutes；It was at the uniform velocity risen through 60 minutes again
Temperature keeps the temperature 30 minutes to after 240 DEG C；Then after 120 minutes are at the uniform velocity warming up to 340 DEG C, 30 minutes are kept the temperature；It is even through 50 minutes again
After speed is warming up to 365 DEG C, 30 minutes are kept the temperature；Again after 60 minutes are at the uniform velocity warming up to 375 DEG C, 240 minutes are kept the temperature.
E, cooling technique：From 375 DEG C of the maximum temperature of sintering, 365 DEG C were at the uniform velocity cooled to through 60 minutes, keeps the temperature 30 minutes；
340 DEG C were at the uniform velocity cooled to through 30 minutes again, keeps the temperature 20 minutes；280 DEG C were at the uniform velocity cooled to through 40 minutes again, then natural cooling again
To 200 DEG C.
F, it machines：Final products are machined out by attached drawing 1 to product after cooling
Embodiment 2
The preparation method of this high ferro braking system brake head brake pad, step and embodiment 1 are almost the same, and difference exists
In：82 parts of polytetrafluoroethylene (PTFE), 18 parts of carbon fibre powder.Modified polytetrafluoroethylcomposite composite material test result obtained is shown in Table 1.
Embodiment 3
The preparation method of this high ferro braking system brake head brake pad, step and embodiment 1 are almost the same, and difference exists
In：70 parts of polytetrafluoroethylene (PTFE), 30 parts of carbon fibre powder.Modified polytetrafluoroethylcomposite composite material test result obtained is shown in Table 1.
Comparative example 1
The preparation method of this high ferro braking system brake head brake pad is consistent with embodiment, and the addition of each component is：It is poly-
99 parts of tetrafluoroethene, 1 part of carbon fibre powder.Modified polytetrafluoroethylcomposite composite material test result obtained is shown in Table 1.
Table 1：
Remarks：Friction-wear test condition：Initial load 196N, rotating speed 200r/min, dry friction 2h.To emery wheel：45 steel,
42-45HRC。
Claims (5)
1. the preparation method of high ferro braking system brake head brake pad, it is characterised in that：Use modified polytetrafluoroethylcomposite composite material
It makes, carbon fibre powder, including preforming, sintering and cooling three steps is added in suspension injecting tetrafluoroethylene powder.
2. high ferro braking system brake head brake pad according to claim 1, it is characterised in that：The polytetrafluoroethylene powder
Carbon fibre powder gross mass percentage is added in end is：5%-35%.
3. high ferro braking system brake head brake pad according to claim 1, it is characterised in that：Preforming pressure 600-
650kg/cm2。
4. high ferro braking system brake head brake pad according to claim 1, it is characterised in that：When sintering, passed through from room temperature
140 DEG C are at the uniform velocity warming up within 40 minutes, keeps the temperature 30 minutes；Again after 60 minutes are at the uniform velocity warming up to 240 DEG C, 30 minutes are kept the temperature；Then
After 120 minutes are at the uniform velocity warming up to 340 DEG C, 30 minutes are kept the temperature；Again after 50 minutes are at the uniform velocity warming up to 365 DEG C, 30 minutes are kept the temperature；
Again after 60 minutes are at the uniform velocity warming up to 375 DEG C, 240 minutes are kept the temperature.
5. high ferro braking system brake head brake pad according to claim 1, it is characterised in that：When cooling, from sintering
375 DEG C of maximum temperature was at the uniform velocity cooled to 365 DEG C through 60 minutes, keeps the temperature 30 minutes；340 DEG C were at the uniform velocity cooled to through 30 minutes again, is protected
Temperature 20 minutes；280 DEG C were at the uniform velocity cooled to through 40 minutes again, then naturally cools to 200 DEG C again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710290192.8A CN108730383A (en) | 2017-04-21 | 2017-04-21 | The preparation method of high ferro braking system brake head brake pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710290192.8A CN108730383A (en) | 2017-04-21 | 2017-04-21 | The preparation method of high ferro braking system brake head brake pad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108730383A true CN108730383A (en) | 2018-11-02 |
Family
ID=63934816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710290192.8A Pending CN108730383A (en) | 2017-04-21 | 2017-04-21 | The preparation method of high ferro braking system brake head brake pad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108730383A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4762216A (en) * | 1987-06-03 | 1988-08-09 | Eaton Corporation | Vehicle component having improved friction material |
| US5358678A (en) * | 1991-07-04 | 1994-10-25 | Mitsubishi Kasei Corporation | Polytetrafluoroethylene porous film and process for preparing the same |
| CN1817960A (en) * | 2006-02-14 | 2006-08-16 | 中国科学技术大学 | High-abrasion-resistant modified materials of polytetrafluoroethylene and production thereof |
| CN101671465A (en) * | 2009-09-23 | 2010-03-17 | 上海第二工业大学 | Preparation method of ethoxyline resin/polytetrafluoroethylene composite material |
| CN101800124A (en) * | 2010-01-29 | 2010-08-11 | 南京肯特新材料有限公司 | Preparation method of polyfluortetraethylene medium-pressure casing pipe for current transformer |
| CN102605209A (en) * | 2012-03-27 | 2012-07-25 | 锦州捷通铁路机械制造有限公司 | Brake pad friction plate manufactured by powder metallurgy and used for high-speed train and preparation process of brake pad friction plate |
-
2017
- 2017-04-21 CN CN201710290192.8A patent/CN108730383A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4762216A (en) * | 1987-06-03 | 1988-08-09 | Eaton Corporation | Vehicle component having improved friction material |
| US5358678A (en) * | 1991-07-04 | 1994-10-25 | Mitsubishi Kasei Corporation | Polytetrafluoroethylene porous film and process for preparing the same |
| CN1817960A (en) * | 2006-02-14 | 2006-08-16 | 中国科学技术大学 | High-abrasion-resistant modified materials of polytetrafluoroethylene and production thereof |
| CN101671465A (en) * | 2009-09-23 | 2010-03-17 | 上海第二工业大学 | Preparation method of ethoxyline resin/polytetrafluoroethylene composite material |
| CN101800124A (en) * | 2010-01-29 | 2010-08-11 | 南京肯特新材料有限公司 | Preparation method of polyfluortetraethylene medium-pressure casing pipe for current transformer |
| CN102605209A (en) * | 2012-03-27 | 2012-07-25 | 锦州捷通铁路机械制造有限公司 | Brake pad friction plate manufactured by powder metallurgy and used for high-speed train and preparation process of brake pad friction plate |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181102 |
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