CN102115844B - Automobile brake disc with good wear-resistance and heat-dissipation performances - Google Patents
Automobile brake disc with good wear-resistance and heat-dissipation performances Download PDFInfo
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- CN102115844B CN102115844B CN200910248896A CN200910248896A CN102115844B CN 102115844 B CN102115844 B CN 102115844B CN 200910248896 A CN200910248896 A CN 200910248896A CN 200910248896 A CN200910248896 A CN 200910248896A CN 102115844 B CN102115844 B CN 102115844B
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- brake disc
- main body
- heat
- rotating direction
- automobile
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Abstract
The invention provides an automobile brake disc with good wear-resistant and heat-dissipation performances. The automobile brake disc comprises a brake disc main body; and rib strips are arranged on the surface of the brake disc main body. The automobile brake disc is characterized in that the rib strips on the surface of the brake disc main body are regularly distributed in a left rotating direction and a right rotating direction along the circumference of the brake disc main body; and at least a row of air exhaust holes are further formed on the surface of the brake disc main body among the rib strips regularly distributed in the left rotating direction and the right rotating direction along the circumference of the brake disc main body. The automobile brake disc is a high-carbon gray iron casting, and is characterized in that alloying elements of copper, molybdenum, nickel, chromium and manganese are further added. Through the multiple rows of air exhaust holes on the brake surface, the contact area of the brake disc with air is increased, so that the heat dissipation performance of the brake disc is better than that of an ordinary disc; the heat-dissipating rib strips are regularly distributed in the left rotating direction and the right rotating direction along the circumference, so that through the fan principle, the air is forced to rapidly pass through a heat source for a better heat-dissipation effect of the brake disc; and as the alloying elements are added, pearlite can be thinned and strengthened, the tensile strength can be improved, the wear resistance can be enhanced, the service life can be prolonged, and the thermal conductivity coefficient and the fatigue resistance can be increased.
Description
Technical field
The present invention relates to a kind of parts of automobile, particularly relate to the good automobile brake disc of a kind of wear resistance, is to the improvement of existing automobile brake disc structure and material, belongs to Automobile Design and manufacture technology field.
Background technology
At present; The rib of brake flange commonly used is generally the vertical bar shape or the shape that drenches with rain; The sense of rotation that the brake flange of this rib descends heat dissipation direction and automotive wheel in working order influences in time distributing of heat at an angle always, thereby shortens the work-ing life of brake flange; The smooth no aperture of brake lining also is unfavorable in time removing because of break flour and grit that friction produces simultaneously.
The material of brake flange commonly used is SAE-J431-G3000, is equivalent between China HT200 and the HT250, and material requires to see the following form
| Chemical Composition % | C | Si | Mn | P | S |
| Brake flange | 3.20～3.50 | ≤2.30 | 0.60～0.90 | ≤0.15 | ≤0.15 |
Brake flange material commonly used does not require adding copper, alloys such as nickel, molybdenum, and graphite length secondary, quantity is less relatively, and not by the alloying element refinement, tensile strength gets final product more than 210MPa the matrix Medium pearlite as yet.The hardness height is unfavorable for mechanical workout.
Summary of the invention
The object of the invention just is to overcome the above-mentioned deficiency that prior art exists, and the improvement aspect the brake flange material makes it more wear-resisting, promotes the braking ability of automobile; Another object of the present invention is that brake flange can better be dispelled the heat when work, reduces the probability that the brake thermal failure takes place.
The technical solution that the present invention provides is: this automobile brake disc, be the high-carbon gray iron casting, and be characterized in also being added with copper, molybdenum, nickel, chromium, manganese alloy element, wherein the weight percentage of automobile brake disc composition is:
C?3.55～3.7，Si?1.8～2.0，Mn?0.7～0.8，S≤0.1，
P≤0.04，Cr?0.2～0.5，Cu?0.6～0.8，Mo?0.3～0.5，
Ni≤0.10, surplus are Fe.
For better accomplishing the object of the invention; This automobile brake disc that the present invention provides; Include the brake flange main body; The surface of brake flange main body is provided with rib, is characterized in that the rib on the said brake flange body surfaces is rule branch left and right sides rotation direction along circumference, also is provided with at least one row's venting hole on the said brake flange body surfaces.
For better accomplishing the object of the invention, described venting hole is arranged on brake flange body surfaces upper edge circumference and is between the rib of rule branch left and right sides rotation direction.
Compared with prior art, the invention has the beneficial effects as follows:
1. carbon content is high, and graphite quantity increases, and has increased heat conductivity and has improved radiating effect, has also improved the brake flange damping property, reduces brake noise.
2. the adding of alloying element can refinement and strengthen perlite, improves tensile strength, strengthens wear resistance, increases the service life.
3. the adding of alloying element simultaneously also helps and improves thermal conductivity and fatigue resistance.
4. the many rows venting hole on the brake lining has increased the contact area with air, and is better than the thermal diffusivity of common disk.And vent rib is rule branch left and right sides rotation direction along circumference, utilizes the fan principle, and force air improves the radiating effect of brake flange fast through thermal source.
Description of drawings
Accompanying drawing is a structural representation of the present invention.
Specific embodiments
Combine Figure of description and embodiment at present, technical scheme of the present invention be described in detail:
Technical scheme of the present invention is described in detail:
As shown in the figure; The automobile brake disc that the present invention provides; Include brake flange main body 1, the surface of brake flange main body 1 is provided with rib 2, and rib 2 is rule branch left and right sides rotation direction along the circumference on brake flange main body 1 surface; Also be provided with many rows' venting hole 3 on brake flange main body 1 surface, venting hole 3 is arranged on brake flange main body 1 surperficial upper edge circumference and is between the rib 2 of rule branch left and right sides rotation direction.
The present invention provides this constructional feature of automobile brake disc; Determine it after being installed on the automobile, can be consistent with the working direction rotation direction of automobile; Utilize fan principle force air to pass through thermal source fast, the heat energy that helps being produced when automobile brakes in the process of advancing can in time distribute, and is the foreign matters such as break flour that venting hole that rule is uniformly distributed with also can make sand grains, friction produced and is prone to spill from venting hole as being processed with on brake surface; And the cushioning effect that is produced because of the brake flange fast rotational is got rid of; Guarantee fully contacting of brake flange and lining, and the friction noise that can the absorption portion brake be produced, the SF and the solemn silence property of raising automobile.
In the embodiment that provides, weight percentage such as following table that automobile brake disc is formed:
Automobile brake disc Chemical Composition report (weight %)
The material meliority of automobile brake disc is analyzed: carbon equivalent (CE=C%+1/3Si%) increases: the advantage of flake graphite is the vibration absorption ability that has increased graphitic cast iron, has reduced the susceptibility to external breach, improves the capacity of heat transmission.Improve carbon equivalent; Being beneficial to greying forms; Quantity of graphite is suitably increased and flake graphite thick (is main with A type graphite), so just impel easy micro-plastic deformation of generation of brake flange and dislocation under pulsating stress, make vibrational energy receive irreversible loss; Quicken the decay of vibration, so its damping property is superior to the brake flange of traditional material.
The adding of alloying element: be intensified high-carbon gray iron casting matrix, improve the tensile strength of ironcasting, just must add an amount of alloying element.Wherein copper can promote eutectic stage greying, reduces the austenitic transformation critical temperature, and refinement also increases perlite; Molybdenum content mainly acted on less than 0.6% o'clock and is refine pearlite, also can refinement graphite, and bigger to the strengthening effect of cast iron.The adding of molybdenum increases thermal conductivity in addition, especially can obviously improve thermal fatigue property; The common feature of other alloying element nickel, chromium, manganese is exactly the formation that promotion and stabilized matrix are organized Medium pearlite, increases pearlitic content, and refinement simultaneously and the ferritic of strengthening in the perlite, and then the intensity of raising brake flange improve its wear resistance better.Be matrix with the perlite when if intensity is identical, quantity of graphite is many and be main with A type graphite, also is beneficial to automobile brake disc and improves thermal fatigue property.
This automobile brake disc is also that with the difference of common brake flange carbon content improves the carburelant that must add suitable proportion in the cast iron melting process; Satisfied not its hardness and requirement of strength because add-on is too high, very fewly satisfied not its Chemical Composition requirement again.The adding of suitable proportion also is one of problem of the key in the production process.
This automobile brake disc thermal stresses characteristics:
Through machinery system of National Taipei University of Technology with make the test of scientific and technological institute, they are with the temperature field and add the field of force and do coupling analysis, try to achieve the thermal stresses data such as the following table of brake flange:
| Rib shapes | Maximum principal stress (MPa) | Least principal stress (MPa) | Occurrence positions | Rib zone maximum stress (MPa) |
| Existing straight rib | 1010 | -559.22 | The fixed orifices edge | 177-200 |
| This automobile brake disc | 1085 | -579.085 | The fixed orifices edge | 160-180 |
Above-mentioned test explanation is in polytype rib, and the thermal stresses of the rib shape of this automobile brake disc is minimum.This also is one of its characteristic.
Claims (1)
- A method of auto brake good wear resistance, high-carbon gray cast iron, characterized in that the further added with copper, molybdenum, nickel, chromium, manganese alloy elements, wherein the weight percent of auto brake is composed of:C 3.62，?Si 1.86，Mn 0.74，S ?0.026，P 0.036，Cr 0.45，Cu 0.75，Mo 0.47，Ni 0.042, and surplus is Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910248896A CN102115844B (en) | 2009-12-30 | 2009-12-30 | Automobile brake disc with good wear-resistance and heat-dissipation performances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910248896A CN102115844B (en) | 2009-12-30 | 2009-12-30 | Automobile brake disc with good wear-resistance and heat-dissipation performances |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102115844A CN102115844A (en) | 2011-07-06 |
| CN102115844B true CN102115844B (en) | 2012-09-19 |
Family
ID=44214766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910248896A Expired - Fee Related CN102115844B (en) | 2009-12-30 | 2009-12-30 | Automobile brake disc with good wear-resistance and heat-dissipation performances |
Country Status (1)
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| CN (1) | CN102115844B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367536B (en) * | 2011-10-10 | 2016-09-14 | 陈均 | A kind of SiO2strengthen the casting method of spheroidal graphite cast iron-based brake disc |
| CN103671642B (en) * | 2012-05-16 | 2016-01-20 | 泰州市瑞驰动力机械有限公司 | Brake disk of motor vehicle |
| CN103215490A (en) * | 2013-05-17 | 2013-07-24 | 莱州新忠耀机械有限公司 | Preparation method of thin-wall A-type graphite casting piece A |
| CN103925316B (en) * | 2014-04-18 | 2016-06-15 | 青岛四方车辆研究所有限公司 | A kind of brake disc of high-speed train and disc material thereof |
| CN105240424B (en) * | 2015-11-23 | 2018-03-27 | 吴泽忠 | Automobile using emergency brake arrangement |
| US10352382B2 (en) * | 2016-07-27 | 2019-07-16 | Shimano Inc. | Bicycle disc brake rotor |
| CN107385313A (en) * | 2017-07-18 | 2017-11-24 | 河池桂嘉知识产权服务有限公司 | The casting method of brake disc |
| CN109578473B (en) * | 2017-09-28 | 2021-01-01 | 长城汽车股份有限公司 | Ventilated brake disc and disc brake |
| CN108315633B (en) * | 2018-01-26 | 2020-10-30 | 清华大学 | Gray cast iron with high heat conductivity and high strength and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5242510A (en) * | 1992-09-25 | 1993-09-07 | Detroit Diesel Corporation | Alloyed grey iron having high thermal fatigue resistance and good machinability |
| CN1232882A (en) * | 1999-01-25 | 1999-10-27 | 吉林工业大学 | New brake hub material |
-
2009
- 2009-12-30 CN CN200910248896A patent/CN102115844B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5242510A (en) * | 1992-09-25 | 1993-09-07 | Detroit Diesel Corporation | Alloyed grey iron having high thermal fatigue resistance and good machinability |
| CN1232882A (en) * | 1999-01-25 | 1999-10-27 | 吉林工业大学 | New brake hub material |
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|---|---|
| CN102115844A (en) | 2011-07-06 |
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Owner name: SHENYANG YINGHAO MACHINERY CO., LTD. Free format text: FORMER OWNER: SHENYANG JINDE MACHINERY CO.,LTD. Effective date: 20141223 |
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Effective date of registration: 20141223 Address after: 110141 Liaoning province Shenyang City Yuhong District No. 101-3 Patentee after: Shenyang surplus Machinery Co., Ltd. Address before: 110141 Heping Village, Yuhong District, Liaoning, Shenyang Patentee before: Shenyang Jinde Machinery Co.,Ltd. |
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Granted publication date: 20120919 Termination date: 20161230 |
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