CN104343859B - Brake hubs and the casting sand type for manufacturing the brake hubs - Google Patents
Brake hubs and the casting sand type for manufacturing the brake hubs Download PDFInfo
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- CN104343859B CN104343859B CN201410519298.7A CN201410519298A CN104343859B CN 104343859 B CN104343859 B CN 104343859B CN 201410519298 A CN201410519298 A CN 201410519298A CN 104343859 B CN104343859 B CN 104343859B
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- 238000005266 casting Methods 0.000 title claims abstract description 40
- 239000004576 sand Substances 0.000 title abstract description 21
- 238000004519 manufacturing process Methods 0.000 title abstract description 11
- 230000003014 reinforcing Effects 0.000 claims abstract description 75
- 210000002435 Tendons Anatomy 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 12
- 238000004382 potting Methods 0.000 abstract description 5
- 239000006188 syrup Substances 0.000 abstract description 5
- 235000020357 syrup Nutrition 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 26
- 229910052742 iron Inorganic materials 0.000 description 13
- 101700064026 EXT1 Proteins 0.000 description 10
- 101710002310 RNASE1 Proteins 0.000 description 10
- 101710022611 RNASE1B Proteins 0.000 description 10
- 238000001816 cooling Methods 0.000 description 6
- 238000004080 punching Methods 0.000 description 4
- 238000000280 densification Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- OFCNXPDARWKPPY-UHFFFAOYSA-N Allopurinol Chemical compound OC1=NC=NC2=C1C=NN2 OFCNXPDARWKPPY-UHFFFAOYSA-N 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 206010068052 Mosaicism Diseases 0.000 description 1
- 210000003765 Sex Chromosomes Anatomy 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The present invention relates to a kind of brake hubs and its casting methods of brake hubs.A kind of brake hubs, it includes hub body, reinforcing rib is surrounded on outer surface, the thickness of reinforcing rib is 6 8mm；A kind of brake hubs casting sand type, it includes sand mold body, and sand mold body is equipped with casting mold cavity, is additionally provided with ingate and gas outlet, casting mold cavity is set in the face-up configuration state of installation of brake hubs, and wherein ingate and gas outlet are arranged at intervals on the mounting surface of casting mold cavity brake hubs.Using the present invention, the brake hubs brake lining and the thickness of reinforcing rib manufactured is thinner, and compactness is very high, and intensity is stronger, perfect heat-dissipating, and service life can improve 2 to 5 times；And the technique of manufacture brake hubs is more simple and practicable, reduce brake hubs brake lining and the blocked up required potting syrup of reinforcing rib, waste caused by reducing the potting syrup that filling is needed in sprue reduces manufacture cost, the policy of national energy-saving emission reduction also is compliant with, there is very big dissemination in this industry.
Description
Technical field
The present invention relates to a kind of brake hubs and manufacture the casting sand types of the brake hubs.
Background technology
Brake hubs are a kind of and automobile brake sheet coordinates so as to fulfill the important automobile component to heavy-duty automobile brake, heavy
For automobile since quality is larger, inertia is also larger, so the requirement to its brake component is also very high.When automobile in load conditions frequency
During numerous brake, the high pressure friction between brake block and brake hubs can generate substantial amounts of heat, and brake hubs temperature is made to raise suddenly.
The pouring type of existing brake hubs is all noted using bottom pour mold, as shown in figure 3, sprue gate is arranged on the reinforcing rib of brake hubs
At position, molten iron is then pressed into Sha Monei from the sprue gate of lower end by punching press ancillary equipment.
The content of the invention
There are following many defects in the pouring type of existing brake hubs：
1st, noted using bottom pour mold, system is needed with higher punching press, could be by molten iron from the lower end of brake hubs to overflow
To upper end；Due to needing to carry out punching press, there need to be punching press ancillary equipment；In casting process, the sprue of running gate system comes relatively
It says longer, keeps pressure to leave enough iron water amount, so a whole set of injection system structure design is complicated, very stupid when pouring into a mould
Weight.
2nd, with the cooling of molten iron, volume shrinkage, sprue gate finally cools down in entire running gate system, so
, it is necessary to reserve riser at sprue gate after casting complete：After liquid metal pours into casting mold, solidifying and generating volume in cooling procedure
It shrinks, volume contraction may cause casting final set part to generate shrinkage porosite and shrinkage cavity.Shrinkage porosite and shrinkage cavity influence the densification of casting
Property, the loaded area of casting is reduced, substantially reduces mechanical property, the effective measures of shrinkage porosite and shrinkage cavity defect are prevented in production is
Riser is set, the main function of riser is storage molten metal, and feeding is carried out to casting, with to reinforcing rib position in cooling procedure into
Row molten iron feeding, and the reinforcing rib of brake hubs is located at feeding mouth, the compactness of feeding mouth is unable to reach the densification at non-feeding mouth
Property, due to the molten iron cooling shaping at sprue gate, the molten iron at riser can not carry out effectively merging feeding with the position of cooling,
For another example in cooling procedure, the graphite nodule in molten iron is grown up, and forms gap, the molten iron at riser can not feeding carry out, make to be located at
The compactness of reinforcing rib at feeding mouth is substantially inferior to other positions of brake hubs.
3rd, using bottom pour mold injecting method, reinforcing rib position can form part in casting process and condense in advance, make to be located at cast
The riser of mouth can not carry out Utopian feeding to the reinforcing rib at the position, while influence the overcasting of entire brake lining,
Cause the compactness at the reinforcing rib position to become excessively poor.Meanwhile entire brake lining is overcasting from bottom to top, brake lining
The molten iron at position does not have enough pressure actions, and cause brake lining is also present with fine and close sex chromosome mosaicism once in a while, influences brake lining
Intensity and service life.
4th, in the case where automobile is in on-position, brake hubs are subject to high pressure friction to generate substantial amounts of heat, and temperature raises suddenly；
In brake hubs using bottom pour mold note, in order to increase intensity, the brake face thickness of brake hubs is all designed to 20-22mm, simultaneously will
The thickness of reinforcing rib is designed to 15-25mm, and blocked up brake lining and reinforcing rib further reduce dissipating for entire brake lining
The thermal efficiency, and expanded by heating problem of non-uniform at the feeding mouth position of brake lining particularly reinforcing rib can be deteriorated.
Since there is above-mentioned problems, the brake hubs on existing market are susceptible to different degrees of quality problems,
There is security risk, and service life is not grown.
It is counted according to applicant, the brake hubs on existing market are in use, 20% or so quality problems are all because of brake hubs
The compactness deficiency of reinforcing rib, causes reinforcing rib at this to crack and scrap, particularly reinforcing rib side and the handing-over position of brake lining
It puts a little；Also 5% quality problems are since Rib Thickness is blocked up, in vehicle brake, positioned at reinforcing rib and reinforcing rib
It is uneven with radiating at the connecting line of brake lining, it cracks at this.
It is thinner that the purpose of the present invention one is to provide a kind of lighter quality, hub wall and Rib Thickness, and the brake of brake hubs
Vehicle surface intensity is stronger and compactness more uniformly, the brake that reinforcing rib heat resistance is strong, more difficult cracking, service life are longer
Hub.
The purpose of the present invention two is to provide a kind of brake hubs casting sand type for manufacturing above-mentioned brake hubs, brake hubs casting
Sand mold can avoid influence of the sprue gate to brake hubs brake lining and its reinforcing rib, improve the densification of brake lining and reinforcing rib entirety
Property.
The purpose of the present invention one is achieved through the following technical solutions：A kind of brake hubs, it is characterised in that：It includes hub body,
Reinforcing rib is surrounded on the outer surface of the hub body, the thickness of the reinforcing rib is 6-8mm.
Further, mounting surface is provided on the inside of the one end of the hub body, the reinforcing rib is arranged on separate on hub body
On the outer surface of mounting surface one side.
Further, the wall thickness of the hub body is 14~16mm.
Preferably, the thickness of the reinforcing rib is 7mm.
Further, the width of the reinforcing rib is 40-75mm.
Preferably, the width of the reinforcing rib 1 is 40-55mm.
Further, the mistake of smooth fairing is formed on the reinforcing rib with hub external surface close to the side of hub body mounting surface
Cross inclined-plane.
Since the prior art is using bottom pour mold note, there is the compactness of brake lining and reinforcing rib, thermal diffusivity and its intensity etc.
Problem, for the basic demand reached needed for reaching in the actual use of existing brake hubs, the thickness of brake lining and reinforcing rib all compared with
There is low, short life of intensity etc. to use defect for thickness, brake hubs.Brake hubs designed by the present invention are due to using new cast side
Formula can improve the compactness of brake lining, and brake hubs can also be improved under conditions of brake lining and Rib Thickness is reduced
Intensity and service life the using for raw material such as use, bring when steel and rare earth metal molten iron casting is greatly saved
Unpredictable technique effect.
The purpose of the present invention two is achieved through the following technical solutions：A kind of brake hubs casting sand type, it includes sand mold body,
Casting mold cavity is provided in the sand mold body, ingate and gas outlet, the casting mold cavity are also set up on the sand mold body
It is set in the face-up configuration state of the installation of brake hubs；The ingate and gas outlet are arranged at intervals at casting mold cavity brake hubs
On mounting surface (4).
Further, the ingate and gas outlet are symmetrically disposed on the mounting surface of casting mold cavity brake hubs.
For the prior art, the advantage of the invention is that：
1st, running gate system ingate is arranged on casting mold cavity brake hubs mounting surface, is set compactness at ingate is worst
It puts on mounting surface, ensure that the compactness of brake hubs brake lining and reinforcing rib；
2nd, casting mold cavity is set downward in the face-up, reinforcing rib of brake hubs of installing of brake hubs, is made in casting process, is added
It is subject to maximum pressure at strengthening tendons, ensure that the compactness highest at reinforcing rib；
3rd, the special designing of running gate system ingate, reduces the thick and heavy sprue of former running gate system needs, and technique is simpler
It is single easy；Waste caused by reducing the potting syrup that filling is needed in thick and heavy sprue, reduces manufacture cost, also is compliant with national section
The policy of energy emission reduction, there is very big dissemination in this industry.
4th, the compactness of the brake hubs manufactured using brake hubs casting sand type of the present invention, hub wall and reinforcing rib is very strong, compared with
Former brake hubs can improve 1 times or more, and intensity is 380~520kp, and the intensity of former brake hubs is only up to 250kp；
5th, brake hubs hub wall thickness of the present invention is 14~16mm, Rib Thickness 6-8mm, and former brake hubs hub wall thickness is 20
~22cm, former Rib Thickness are 1.5~2.5cm；It improves rear brake nave boss hub wall and Rib Thickness is significantly thinner, quality is lighter
Just, solve the problems, such as former brake hubs hub wall and reinforcing rib is blocked up causes the unevenness that radiates；The service life of brake hubs can improve 2
To 5 times；The thickness of brake hubs hub wall and reinforcing rib is thinner, and the dosage of potting syrup is less, has saved cost, meets national energy-saving and subtracts
The policy of row, has the great significance for popularization.
6th, the ingehious design of reinforcing rib gradient makes reinforcing rib be transitioned into hub body surface face, when solving brake due to reinforcing rib with
Hub body surface turns are too big and the problem of be easily broken off.
Description of the drawings
Fig. 1 is the sectional view of brake hubs of the present invention；
Fig. 2 is brake hubs running gate system sectional view of the present invention；
Fig. 3 is brake hubs running gate system sectional view in the prior art.
Label declaration：1 reinforcing rib, 2 inclined-planes, 3 hub bodies, 4 mounting surfaces, 5 ingates, 6 upper molds, 7 lower dies, 8 go out
Gas port, 9 riser, 10 sprue gates
Specific embodiment
Present invention is described in detail with reference to Figure of description and embodiment：
It is as shown in Figure 1 a kind of embodiment schematic diagram of brake hubs provided by the invention, it includes hub body 3, the hub body 3
Outer surface on be surrounded with reinforcing rib 1, the thickness of the reinforcing rib 1 is 6-8mm.
Further, mounting surface 4 is provided on the inside of the one end of the hub body 3, the reinforcing rib 1 is arranged on hub body 3
On outer surface away from 4 one side of mounting surface.
Further, the wall thickness of the hub body 3 is 14~16mm.
Further, the thickness of the reinforcing rib 1 is 7mm.
Further, the width of the reinforcing rib 1 is 40-75mm.The width of reinforcing rib be according to the sizes of brake hubs into
Row design, but produced hub body is perfused in used bottom compared with the prior art, reinforcing rib width of the invention is relatively narrow
About 20mm.Such as standard brake hubs used in same vehicle, the width of existing brake hubs reinforcing rib is 65-70mm, and this hair
The width of bright poured into a mould brake hubs reinforcing rib is 45-50mm.
, it is preferable that the width of the reinforcing rib 1 is 40-55mm.
Further, the reinforcing rib 1 forms smooth fairing close to the side of 3 mounting surface 4 of hub body and 1 outer surface of hub body
Intermediate incline 2.
A kind of embodiment schematic diagram of brake hubs casting sand type provided by the invention is illustrated in figure 2, it includes sand mold sheet
Body, sand mold body form with upper mold 6 and lower die 7, formation casting mold cavity between upper mold 6 and lower die 7, on the sand mold body
Also set up ingate 5 and gas outlet 8 positioned at upper mold top, the casting mold cavity in brake hubs the configuration state upward of mounting surface 4
It sets；The ingate and gas outlet symmetrical (being received with the axis of brake hubs hub body as line of symmetry) are arranged at casting mold cavity brake hubs
On mounting surface 4.
Above-mentioned running gate system is by the way of top casting note, and ingate 5 is arranged on the mounting surface 4 of brake hubs, makes to pour
Fluid injection flows to reinforcing rib from mounting surface, so bigger closer to the pressure that reinforcing rib potting syrup is born, and is less susceptible to generate shrinkage cavity,
So that the compactness of reinforcing rib and brake hubs hub wall is most strong, and the worst work for not influencing brake hubs of the compactness of mounting surface
With；Using such pouring type, reduce the thick and heavy sprue of former running gate system needs, reducing needs pouring for filling in sprue
Fluid injection body, reduces cost；Its casting equipment is simple, and cost is lower, more meets the policy of national energy-saving emission reduction, there is very big push away
Wide meaning.
Using above-mentioned pouring type carry out cast manufacture brake hubs brake lining and reinforcing rib compactness it is very high, intensity
It is the 2 times or more of former technique, solves the problems, such as that reinforcing rib compactness is not easy to crack enough；Since brake hubs have very high cause
Close property and intensity, need not be very high to the thickness of brake hubs hub body 3 and reinforcing rib 1, so as to solve to cause because reinforcing rib is blocked up
The problem of heat dissipation is uneven easy to aging；Therefore the design of the present invention both intensity of brake rim, not easy to crack, in turn ensures brake rim
Very strong heat dissipation performance, while the service life of brake rim is extended, more former brake hubs improve at least 2 times or more.
The thickness of brake hubs of the present invention is 14~16mm, Rib Thickness 6-8mm, and intensity is former for 380~520kp to stop
The thickness of nave boss is 20~22mm, and Rib Thickness is 15~25mm, and intensity is up to 250kp；Brake rim intensity apparently higher than
It is former brake hubs, less easy to crack, and the thickness of brake hubs and reinforcing rib is substantially thinner than former brake hubs, reduces the use of resource
Amount meets the policy of national energy-saving emission reduction.
1 side of brake hubs reinforcing rib of the present invention is set as transition face 2 and is transitioned into hub body surface face, due to reinforcing rib when solving to brake
1 it is too big with 3 surface turns of hub body and the problem of be easily broken off；During brake, since brake hubs are subject to pressure from inside to outside, make to add
Strengthening tendons 1 is subjected to large compressive, while the intersection on 3 surface of reinforcing rib 1 and hub body generates stress, if intersection corner mistake
Greatly, stress is just very big, and easily aging ruptures here, and the present invention into the transition face 2 on outer inclined-plane, divides reinforcing rib lateral layout
The effect of stress has been dissipated, its stress is made to become smaller, the effect of heat dissipation can also be increased by being not easy heat production.
The brake hubs poured into a mould to preferably embody the present invention compare the brake obtained by existing brake hubs pouring procedure
Nave boss is in performance the advantages of, under the conditions of identical pouring procedure, notes sand mould casting by existing bottom pour mold and obtains brake hubs A
With brake hubs B, brake hubs C, brake hubs D and brake hubs E are made by the brake hubs casting sand type of the application, corresponding following table
Embodiment 1, embodiment 2 and embodiment 3；
The performance parameter of each brake hubs such as following table：
Wherein, hot metal composition is (mass percent) used by this experiment：Carbon (c):3.6-3.8 ferrosilicon (si):
1.2-1.6 magnesium (mg):0.015-0.04, manganese (mu):0.2-.04, rare earth (Re):0.04-0.08, sulphur (s):0.009-0.15,
Phosphorus (p):0.02-0.04.Pouring technology flow is：Molten iron is heated to 1500 DEG C, molten iron is injected in casting sand type, is cooled to
600 DEG C keep the temperature 120 minutes, then are cooled to 300 DEG C and mould is gone to obtain brake hubs sample.
It should be noted that for the ease of the comparison of experimental data, Gu the Rib Thickness in embodiment is all unified for
, there is not product of the reinforcing rib width down to 50mm in 50mm, and the existing product obtained by due to use bottom pouring type, because
This, two comparative sample bottom pour mold note A and bottom pour mold note B select the common reinforcing rib width 65mm in existing market as a comparison sample.
As seen from the above table, under the conditions of identical pouring procedure, the obtained brake of sand mould casting is noted by existing bottom pour mold
For hub compared with the present invention, the thickness of brake lining and reinforcing rib is all very thick, in the case of most thin, thickness have respectively 20mm and
18mm, and corresponding intensity highest, less than 260kp, compactness is poor, and yield rate highest only has 80% or so, product yield
Highest also only has 75% or so, but opposite, and the most thick thickness of brake lining and reinforcing rib of the present invention is only 16 and 8, and is stopped
Minimum up to more than the 400kp of intensity of nave boss, yield rate and product yield are also all more than 90%, it is known that, using the present invention
The obtained brake hubs of pouring procedure in the case where the thickness of brake lining and reinforcing rib is very thin, moreover it is possible to have very high strong
Degree, keeps extraordinary compactness, and yield rate and product yield are very high；Distinguish in its brake lining and Rib Thickness
In production sample for 15mm and 7mm, the intensity most strong (kp) and compactness of brake hubs are also fine, produce into flat rate and technique
Rate is all also more than 90%.
Claims (7)
1. including hub body (3), reinforcing rib (1), feature are surrounded on the outer surface of the hub body (3) for a kind of brake hubs
It is：The thickness of the reinforcing rib (1) is 6-8mm, and mounting surface (4) is provided on the inside of the one end of the hub body (3), described to add
Strengthening tendons (1) is arranged on hub body (3) on the outer surface away from mounting surface (4) one side, the casting ingate (5) of the hub body (3)
It is arranged at intervals at gas outlet (8) above mounting surface (4).
2. brake hubs according to claim 1, it is characterised in that：The wall thickness of the hub body (3) is 14~16mm.
3. brake hubs according to claim 1, it is characterised in that：The thickness of the reinforcing rib (1) is 7mm.
4. brake hubs according to claim 1, it is characterised in that：The width of the reinforcing rib (1) is 40-75mm.
5. brake hubs according to claim 1, it is characterised in that：The width of the reinforcing rib (1) is 40-55mm.
6. brake hubs according to claim 1, it is characterised in that：Close to hub body (3) mounting surface on the reinforcing rib (1)
(4) side forms the intermediate incline (2) of smooth fairing with hub body (3) outer surface.
7. brake hubs according to claim 1, it is characterised in that：The ingate (5) and gas outlet (8) are symmetrically disposed on
On the mounting surface (4) of casting mold cavity brake hubs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410519298.7A CN104343859B (en) | 2014-09-30 | Brake hubs and the casting sand type for manufacturing the brake hubs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410519298.7A CN104343859B (en) | 2014-09-30 | Brake hubs and the casting sand type for manufacturing the brake hubs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104343859A CN104343859A (en) | 2015-02-11 |
| CN104343859B true CN104343859B (en) | 2018-06-01 |
Family
ID=
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101367125A (en) * | 2007-08-17 | 2009-02-18 | 通用汽车环球科技运作公司 | Casting noise-damped, vented brake rotors with embedded inserts |
| CN201220577Y (en) * | 2008-05-30 | 2009-04-15 | 杭州汇丰机械设备有限公司 | Medium-sized rear drive axle |
| CN202251569U (en) * | 2011-07-07 | 2012-05-30 | 马映辉 | Water-cooling brake drum |
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101367125A (en) * | 2007-08-17 | 2009-02-18 | 通用汽车环球科技运作公司 | Casting noise-damped, vented brake rotors with embedded inserts |
| CN201220577Y (en) * | 2008-05-30 | 2009-04-15 | 杭州汇丰机械设备有限公司 | Medium-sized rear drive axle |
| CN202251569U (en) * | 2011-07-07 | 2012-05-30 | 马映辉 | Water-cooling brake drum |
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| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 354200, Fujian, Nanping province children swim town red shore village Applicant after: Fujian Jianyang Nanping District Casting Co., Ltd. Address before: 354200, Fujian, Nanping province children swim town red shore village Applicant before: Fujian Jianyang Dushi Casting Co., Ltd. |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20170714 Address after: 354200 Nanping City, Fujian province Jianyang District Huilong village Wu Ling L07122503 Applicant after: Nanping city Jianyang district on Yue Trade Limited company Address before: 354200, Fujian, Nanping province children swim town red shore village Applicant before: Fujian Jianyang Nanping District Casting Co., Ltd. |
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| GR01 | Patent grant |