CN1755159A - Sedan brake disk and its manufacturing method - Google Patents
Sedan brake disk and its manufacturing method Download PDFInfo
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- CN1755159A CN1755159A CN 200410051611 CN200410051611A CN1755159A CN 1755159 A CN1755159 A CN 1755159A CN 200410051611 CN200410051611 CN 200410051611 CN 200410051611 A CN200410051611 A CN 200410051611A CN 1755159 A CN1755159 A CN 1755159A
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- brake disc
- silicon nitride
- car
- sintering
- wearing piece
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Abstract
The invention discloses a car brake wheel and making method, which is characterized by the following: the car brake wheel contains brake plate and security hole case, wherein the brake plate is made of silicon nitride ceramics with good elaboration, peculiar abrasion-proof, corrosion-resisting, high temperature resistance, light specific gravity properties in comparison with the steel material; loading the silicon nitride ceramics power and fixation hole case in the prepared brake wheel model; compressing the model by 1800-2200kg/cm2 pressure; sintering the model for the first time at1100-1300 Deg.C temperature then proceeding precise elaboration; sintering again at 1700- 1900 Deg.C to product brake wheel fit for the technique requirement. The invention can be applied in the car domain widely.
Description
Technical field
The present invention relates to a kind of car brake disc and manufacture method thereof.
Background technique
Car is consumed in China and is just presenting the develop rapidly stage, and more famous in the world major company competitively enters this piece enormous and latent market of China, the car manufacturer that Chinese several families are bigger, about ten thousand of car Annual output 10-20.The car that comprises at present China in the world all adopts the steel brake disc, promptly is reprocessed into brake disc with steel material after casting, and traditional conservative idea is thought, steel material intensity height is safe and reliable.But make brake disc with steel material and still have following shortcoming: 1, wear-resisting property is poor, and general car is behind certain mileage that travels, and brake disc just can may wear to and can't use, and must change; 2, resistance to high temperature is poor, and brake disc is in when brake, because of friction can produce high temperature, high heat, meet water this moment after, have the explosion phenomenon and take place, especially at car descending duration apart from brake, the high heat of the high temperature that brake disc produces, brake disc intensity is changed, make brake unreliable, quite dangerous; 3, the brake disc quality of invar material making is heavier, can increase the car gross weight, increases the load of motor, particularly influences the acceleration performance of car.Therefore the existing car brake disc of making of steel material is not wear-resisting, non-refractory, quality are heavy.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, and a kind of car brake disc and manufacture method thereof of wear-resisting, high temperature resistant, light weight is provided.
The technical solution adopted in the present invention is: the present invention includes brake disc and borehole jack is installed, described brake disc is provided with and the corresponding mounting hole of car wheel, described installation borehole jack fixedly is embedded in the described mounting hole, and described brake disc is made by silicon nitride ceramic material.
Described brake disc is made up of ring-type wearing piece and land, described land and described wearing piece are connected as a single entity, the periphery of described wearing piece middle part evenly be provided with several radial direction through hole and be connected with the same side of each described through hole, along the circumferential shallow slot of described wearing piece, described mounting hole is arranged on the described land.
The manufacture method of brake disc of the present invention may further comprise the steps:
1. make mould according to the technical requirements of described brake disc;
2. silicon nitride ceramic is worn into fine powder;
3. earlier described installation borehole jack (1) is put into described mould, in the described mould of more described silicon nitride ceramics fine powder being packed into, with 1800～2200kg/cm
2Pressure be pressed into silicon nitride ceramics brake disc model;
4. the described brake disc model with compression moulding heats with the electronic arc that electric arc furnaces produces, and makes temperature reach 1100～1300 ℃, carries out first sintering;
5. the described brake disc with first sintering passes through fine finishing;
6. the electronic arc that the described brake disc after the fine finishing is produced with electric arc furnaces heats and filling nitrogen, makes temperature reach 1700～1900 ℃, carries out sintering once more, gets final product.
The invention has the beneficial effects as follows: because brake disc of the present invention is to adopt silicon nitride ceramic material to make, silicon nitride ceramics is a kind of new ceramic material that just is born in recent years, it not only has good processibility, also have unique wear-resisting, corrosion-resistant, resistance to high temperature, and light specific gravity, so silicon nitride ceramic material is compared Security, the wear-resisting property index that more can satisfy brake disc with steel material:
1, in the performance index of silicon nitride ceramic material, tensile strength is that 120Mpa, compressive strength are that 1200Mpa, resistance to flexure are that 250-340Mpa, hardness are 80-85BRA, so silicon nitride ceramics has very strong wear resistance, be steel 6-7 doubly, that is to say, the working life of the brake disc of making of silicon nitride ceramics be existing steel material brake disc 6-7 doubly, increase the service life, make car brake disc free of replacement all the life, thereby reach the purpose of saving the maintenance and the cost of repairs;
2, silicon nitride ceramic material has good corrosion-resistant, high temperature resistant high-heat performance, so guaranteed the Security of brake disc;
3, the light specific gravity of silicon nitride ceramic material, than the light 40-50% of steel material, thus can reduce the gross weight of car with this brake disc, thus the load of motor alleviated, improve the acceleration performance of car;
4, silicon nitride ceramic material has good processing properties, can make the making of brake disc can satisfy its requirement on machining accuracy, thereby further improve the working life of brake disc.
So the brake disc of making of silicon nitride ceramic material has advantage wear-resisting, high temperature resistant, light weight.
Again because the mounting hole internal fixation of brake disc of the present invention is embedded with the installation borehole jack, so can improve the shock resistance of the join strength and the car of brake disc and wheel.
Again since the periphery of wearing piece of the present invention middle part evenly be provided with several radial direction through hole and be connected with the same side of each described through hole, along the circumferential shallow slot of described wearing piece, promptly leave the area that keeps out the wind on through hole side as vent hole, blade like fan, during the brake disc rotation, it can change the direction of wind, makes the passage of wind through via hole, reaches good heat-radiation effect, so more improved the heat dispersion of brake disc, prolonged its working life;
Again since the present invention silicon nitride ceramic and mounting hole cover are packed in the brake disc mould that performs in advance, with press machine with its compression moulding, again with carrying out fine finishing behind 1100～1300 ℃ of first sintering of high temperature, and then with 1700～1900 ℃ high temperature once more sintering promptly can be made into the brake disc that meets technical requirements, so preparation process is simple, cost is low.
Description of drawings
Fig. 1 is vertical cross-sectional schematic of the present invention;
Fig. 2 is an A-A cross-sectional schematic of the present invention.
Embodiment
The present invention includes brake disc and borehole jack 1 is installed, described brake disc is made by silicon nitride ceramic material.
Silicon nitride ceramic material has good processibility and unique wear-resisting, corrosion resistant, resistance to high temperature, and light specific gravity, compares Security, the wear-resisting property index that more can satisfy brake disc with steel material.
As shown in Figure 1 and Figure 2, described brake disc is made up of ring-type wearing piece 2 and land 3.Described wearing piece 2 is connected as a single entity with described land 3, the periphery of described wearing piece 1 middle part evenly be provided with 8 as the radial direction through hole 4 of vent hole and be connected with the same side of each described through hole 4, along the circumferential shallow slot 5 of described wearing piece 2, promptly leave the area that keeps out the wind on through hole 4 sides as vent hole, blade like fan, during the brake disc rotation, it can change the direction of wind, makes the passage of wind through via hole, reach good heat-radiation effect, prolonged the working life of brake disc; Described land 3 is provided with and the corresponding mounting hole of car wheel, and described installation borehole jack 1 is that the cross section that fixedly is flush-mounted in the described mounting hole is the steel borehole jack of " worker " font, and it can improve the shock resistance of the join strength and the car of brake disc and wheel.
When the present invention is used for the car front-wheel, divide left and right sides brake disc, left brake disc and right brake disc structurally are symmetrical.When being used for the car trailing wheel,,, promptly do not need to be provided with through hole 4 and shallow slot 5 so that wearing piece 2 can be made is solid because of trailing wheel requires lowlyer to heat radiation.In addition, the brake hub that is used for the car trailing wheel also can adopt technology of the present invention.
The manufacture method of brake disc of the present invention may further comprise the steps:
1. make mould according to the technical requirements of described brake disc;
2. silicon nitride ceramic is worn into fine powder through corase grind, fine grinding operation;
3. earlier described installation borehole jack 1 is put into described mould, in the described mould of more described silicon nitride ceramics fine powder being packed into, with 1800～2200kg/cm
2Pressure be pressed into silicon nitride ceramics brake disc model;
4. the described brake disc model with compression moulding heats with the electronic arc that electric arc furnaces produces, and makes temperature reach 1100～1300 ℃, carries out first sintering, can obtain good mechanical processing characteristic;
5. the described brake disc of first sintering is carried out fine finishing with lathe, grinding machine etc. and make it to reach technical requirements;
6. with the described brake disc after the fine finishing with electronic arc heating and filling nitrogen that electric arc furnaces produces, make temperature reach 1700～1900 ℃, carry out sintering once more, get final product to such an extent that meet the brake disc of technical requirements.
The technical requirements of brake disc model is generally not high, surface finishment reaches 1.6 (Ra), morpheme worker's difference gets final product less than 0.085, mould of the present invention adopts common means to make, when if the mould of step in 1. can make the brake disc model of 2. suppressing out through step reach the designing requirement of product, just needn't carry out fine finishing, directly carrying out sintering with 1700～1900 ℃ high temperature gets final product to such an extent that meet the brake disc of technical requirements, can reduce one sintering circuit and finishing step, reduce the manufacturing cost.The manufacturing process of brake disc of the present invention is simple, and cost is low, can be mass-produced to satisfy the requirement of market for automobiles.
Claims (3)
1, a kind of car brake disc, it is characterized in that: it comprises brake disc and borehole jack (1) is installed, described brake disc is provided with and the corresponding mounting hole of car wheel, and described installation borehole jack (1) fixedly is embedded in the described mounting hole, and described brake disc is made by silicon nitride ceramic material.
2, a kind of car brake disc according to claim 1, it is characterized in that: described brake disc is made up of ring-type wearing piece (2) and land (3), described land and described wearing piece (2) are connected as a single entity, the periphery of described wearing piece (2) middle part evenly be provided with several radial direction through hole (4) and be connected with the same side of each described through hole (4), along the circumferential shallow slot (5) of described wearing piece (2), described mounting hole is arranged on the described land (3).
3, the manufacture method of the described a kind of car brake disc of a kind of claim 1, it is characterized in that: it may further comprise the steps:
1. make mould according to the technical requirements of described brake disc;
2. silicon nitride ceramic is worn into fine powder;
3. earlier described installation borehole jack (1) is put into described mould, in the described mould of more described silicon nitride ceramics fine powder being packed into, with 1800～2200kg/cm
2Pressure be pressed into silicon nitride ceramics brake disc model;
4. the described brake disc model with compression moulding heats with the electronic arc that electric arc furnaces produces, and makes temperature reach 1100～1300 ℃, carries out first sintering;
5. the described brake disc with first sintering passes through fine finishing;
6. the electronic arc that the described brake disc after the fine finishing is produced with electric arc furnaces heats and filling nitrogen, makes temperature reach 1700～1900 ℃, carries out sintering once more, gets final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410051611 CN1755159A (en) | 2004-09-27 | 2004-09-27 | Sedan brake disk and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410051611 CN1755159A (en) | 2004-09-27 | 2004-09-27 | Sedan brake disk and its manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1755159A true CN1755159A (en) | 2006-04-05 |
Family
ID=36688626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410051611 Pending CN1755159A (en) | 2004-09-27 | 2004-09-27 | Sedan brake disk and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1755159A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562878A (en) * | 2011-12-12 | 2012-07-11 | 袁墩举 | Manufacturing method for automobile brake disc or brake hub |
| CN104817335A (en) * | 2015-03-31 | 2015-08-05 | 陈巧兰 | Manufacturing method of automobile brake disc |
-
2004
- 2004-09-27 CN CN 200410051611 patent/CN1755159A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562878A (en) * | 2011-12-12 | 2012-07-11 | 袁墩举 | Manufacturing method for automobile brake disc or brake hub |
| CN104817335A (en) * | 2015-03-31 | 2015-08-05 | 陈巧兰 | Manufacturing method of automobile brake disc |
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| WD01 | Invention patent application deemed withdrawn after publication |