CN102494065A - Manufacturing process of drum-type friction material - Google Patents
Manufacturing process of drum-type friction material Download PDFInfo
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- CN102494065A CN102494065A CN2011103865813A CN201110386581A CN102494065A CN 102494065 A CN102494065 A CN 102494065A CN 2011103865813 A CN2011103865813 A CN 2011103865813A CN 201110386581 A CN201110386581 A CN 201110386581A CN 102494065 A CN102494065 A CN 102494065A
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- friction material
- drum
- warm
- pressing
- type friction
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Abstract
The invention discloses a manufacturing process of a drum-type friction material, wherein the process comprises the following steps: 1) mixing each component of the friction material uniformly in proportation, thereby obtaining a mixed material; 2) pressing the mixed material into a flat-plate-type blank material by adopting a warm-pressing process; 3) punching the blank material, thereby obtaining a tile-shaped arc material; and 4) carrying out forming treatment on the arc material by adopting the warm-pressing process. The manufacturing process of the drum-type friction material provided by the invention has the beneficial technical effects that before the material is subjected to bend forming, the warm-pressing process is set, thus the density distribution of the material is uniform, the component combination of the material is compact, the extending and squeezing for the components to two flanks in bend forming are avoided, finally the shape of the friction material is stablized through the warm-pressing process, and residual stress caused by a punching process is eliminated.
Description
Technical field
The present invention relates to a kind of preparation process of automotive friction material, relate in particular to a kind of manufacturing process of drum-type friction material.
Background technique
The manufacturing process of drum-type friction material has experienced the evolution process that wet type roll-in, the single chamber compacting of dry type, multi-cavity single-layer compressed, two-chamber multilayer are suppressed; Though the product that aforementioned several method obtains respectively has pluses and minuses; But there is an identical problem in the product that they obtain: because the shape of drum-type friction material is special; It is shaped as tile, will cause the density of material lower (by the arc top part of the formed arc of tile) at drum-type friction material middle part when adopting existing technology to make, and this is mainly caused by bending technology; During bending; The tortuosity at drum-type friction material middle part is maximum, and the material at drum-type friction material middle part is stretched and pushes compression to both sides, is lower than the structural strength of both wings position thus with regard to the structural strength that causes drum-type friction material medium position place; Because density of material, structural strength is inhomogeneous, cause the friction factor of drum-type friction material unstable, even same batch product also exists than big-difference.
Summary of the invention
To the problem in the background technique, the present invention proposes a kind of manufacturing process of drum-type friction material, its process step is: 1) the various components with friction material mix in proportion, and obtain mixture; 2) adopt warm-pressing technology that mixture is pressed into plate shaped blank; 3) blank is carried out punching press, obtain the arc material of tile; 4) adopt heat pressing process to the processing that formalizes of arc material.
Step 2) in, the process parameter of warm-pressing technology is: 90 ℃ of temperature and pressure temperature, pressure 300kg/cm
2, temperature and pressure time 5-8 second.
In the step 4), the process parameter of heat pressing process is: 160 ± 10 ℃ of hot pressing temperatures, pressure 300kg/cm
2, hot pressing time 1 minute.
Useful technique effect of the present invention is: before material is carried out bending; Be provided with warm-pressing technology; The density profile that makes material evenly, component combines closely; Component is stretched, is squeezed to both wings when having avoided bending, makes the friction material dimensionally stable through heat pressing process at last, eliminates the residual stress that stamping process causes.
Embodiment
A kind of manufacturing process of drum-type friction material, its process step is: 1) the various components with friction material mix in proportion, and obtain mixture; 2) adopt warm-pressing technology that mixture is pressed into plate shaped blank; 3) blank is carried out punching press, obtain the arc material of tile; 4) adopt heat pressing process to the processing that formalizes of arc material.
The present invention is different with the existing technology maximum, before bending, is provided with warm-pressing technology exactly, and mixture is pressed into plate shaped blank; For the technology of direct bending, carry out the dull and stereotyped compacting of temperature and pressure in advance, can make the density of material more even; Component combines closelyr; Because material has obtained bigger tightness during temperature and pressure, therefore when bending, though the material at drum-type friction material middle part still can be stretched; But compare with the direct bending technology of existing technology, the material deformation during bending of the present invention has been significantly smaller than influence that direct bending causes density of material to the influence of density of material.In addition, the present invention also is provided with heat pressing process behind bending, in order to eliminate the residual stress of the material internal that is caused by the punching press bending, the structural strength of material and the distribution of density is optimized.The present invention does not have specific (special) requirements to the component of drum-type friction material, and the drum-type friction material of existing different component all can adopt the inventive method to carry out the bending operation, so the component of drum-type friction material repeats no more at this.
To concrete technology, the invention allows for following preferred parameter setting: step 2), the process parameter of warm-pressing technology is: 90 ℃ of temperature and pressure temperature, pressure 300kg/cm
2, temperature and pressure time 5-8 second.In the step 4), the process parameter of heat pressing process is: 160 ± 10 ℃ of hot pressing temperatures, pressure 300kg/cm
2, hot pressing time 1 minute.
Claims (3)
1. the manufacturing process of a drum-type friction material, it is characterized in that: process step is: 1) the various components with friction material mix in proportion, and obtain mixture; 2) adopt warm-pressing technology that mixture is pressed into plate shaped blank; 3) blank is carried out punching press, obtain the arc material of tile; 4) adopt heat pressing process to the processing that formalizes of arc material.
2. the manufacturing process of drum-type friction material according to claim 1 is characterized in that: step 2) in, the process parameter of warm-pressing technology is: 90 ℃ of temperature and pressure temperature, pressure 300kg/cm
2, temperature and pressure time 5-8 second.
3. the manufacturing process of drum-type friction material according to claim 1 is characterized in that: in the step 4), the process parameter of heat pressing process is: 160 ± 10 ℃ of hot pressing temperatures, pressure 300kg/cm
2, hot pressing time 1 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103865813A CN102494065A (en) | 2011-11-29 | 2011-11-29 | Manufacturing process of drum-type friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103865813A CN102494065A (en) | 2011-11-29 | 2011-11-29 | Manufacturing process of drum-type friction material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102494065A true CN102494065A (en) | 2012-06-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103865813A Pending CN102494065A (en) | 2011-11-29 | 2011-11-29 | Manufacturing process of drum-type friction material |
Country Status (1)
| Country | Link |
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| CN (1) | CN102494065A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103642460A (en) * | 2013-12-25 | 2014-03-19 | 重庆红宇摩擦制品有限公司 | Copper-free environment-friendly formula for friction material for automobiles |
| CN104632960A (en) * | 2014-12-10 | 2015-05-20 | 重庆红宇摩擦制品有限公司 | Drum brake pad capable of preventing rust adhesion and preparation method thereof |
| CN112727966A (en) * | 2020-12-25 | 2021-04-30 | 湖北飞龙摩擦密封材料股份有限公司 | Preparation method of brake friction plate processed through flat plate die |
Citations (7)
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|---|---|---|---|---|
| CN1070662A (en) * | 1992-08-20 | 1993-04-07 | 鞍山钢铁公司 | The manufacturing process of a kind of brake friction material and brake facing |
| US20020132877A1 (en) * | 2001-01-12 | 2002-09-19 | Iwao Saikatsu | Non-asbestos friction materials |
| CN101033785A (en) * | 2006-03-09 | 2007-09-12 | 王长达 | Asbestos-free metal-free drum brake lining used in vehicle and manufacture method therefor |
| CN101070395A (en) * | 2007-06-20 | 2007-11-14 | 中南大学 | Method for making braking shoe and piece of charcoal/charcoal-silicon carbonate composite material |
| CN101158382A (en) * | 2006-10-03 | 2008-04-09 | 江苏威特集团有限公司 | High temperature resistant environment-friendly type high performance disc type brake block and producing method thereof |
| CN101813149A (en) * | 2010-05-20 | 2010-08-25 | 湖南博云汽车制动材料有限公司 | Low-metal ceramic-based drum-type brake pad and preparation method thereof |
| WO2011111718A1 (en) * | 2010-03-09 | 2011-09-15 | 曙ブレーキ工業株式会社 | Compression molding apparatus and molding die |
-
2011
- 2011-11-29 CN CN2011103865813A patent/CN102494065A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1070662A (en) * | 1992-08-20 | 1993-04-07 | 鞍山钢铁公司 | The manufacturing process of a kind of brake friction material and brake facing |
| US20020132877A1 (en) * | 2001-01-12 | 2002-09-19 | Iwao Saikatsu | Non-asbestos friction materials |
| CN101033785A (en) * | 2006-03-09 | 2007-09-12 | 王长达 | Asbestos-free metal-free drum brake lining used in vehicle and manufacture method therefor |
| CN101158382A (en) * | 2006-10-03 | 2008-04-09 | 江苏威特集团有限公司 | High temperature resistant environment-friendly type high performance disc type brake block and producing method thereof |
| CN101070395A (en) * | 2007-06-20 | 2007-11-14 | 中南大学 | Method for making braking shoe and piece of charcoal/charcoal-silicon carbonate composite material |
| WO2011111718A1 (en) * | 2010-03-09 | 2011-09-15 | 曙ブレーキ工業株式会社 | Compression molding apparatus and molding die |
| CN101813149A (en) * | 2010-05-20 | 2010-08-25 | 湖南博云汽车制动材料有限公司 | Low-metal ceramic-based drum-type brake pad and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103642460A (en) * | 2013-12-25 | 2014-03-19 | 重庆红宇摩擦制品有限公司 | Copper-free environment-friendly formula for friction material for automobiles |
| CN103642460B (en) * | 2013-12-25 | 2015-04-29 | 重庆红宇摩擦制品有限公司 | Copper-free environment-friendly formula for friction material for automobiles |
| CN104632960A (en) * | 2014-12-10 | 2015-05-20 | 重庆红宇摩擦制品有限公司 | Drum brake pad capable of preventing rust adhesion and preparation method thereof |
| CN112727966A (en) * | 2020-12-25 | 2021-04-30 | 湖北飞龙摩擦密封材料股份有限公司 | Preparation method of brake friction plate processed through flat plate die |
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Application publication date: 20120613 |