CN102352899B - Low-noise powder metallurgy brake pad and preparation method thereof - Google Patents
Low-noise powder metallurgy brake pad and preparation method thereof Download PDFInfo
- Publication number
- CN102352899B CN102352899B CN 201110282872 CN201110282872A CN102352899B CN 102352899 B CN102352899 B CN 102352899B CN 201110282872 CN201110282872 CN 201110282872 CN 201110282872 A CN201110282872 A CN 201110282872A CN 102352899 B CN102352899 B CN 102352899B
- Authority
- CN
- China
- Prior art keywords
- powder
- orders
- noise
- brake pad
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Braking Arrangements (AREA)
Abstract
The invention relates to the technical field of brake pads and particularly discloses a low-noise powder metallurgy brake pad and a preparation method thereof. The low-noise powder metallurgy brake pad is characterized by comprising the following components by weight percent: 50%-65% of brass powder, 4%-8% of iron powder, 2%-8% of soft foam iron powder, 4%-8% of aluminum powder, 2%-6% of aluminum silicate hollow sphere, 5%-10% of graphite, 3%-6% of molybdenum disulphide, 2%-4% of vermiculite, 2%-8% of titanium carbide powder and 2%-7% of toughening carbon fiber. The low-noise powder metallurgy brake pad has the following beneficial effects: the brake pad pair prepared by the invention is less in abrasion to a coupling disc, small in noise occurrence probability, and stable in frictional coefficient; and the abnormal abrasion, the environmental friendliness and the brake performances can meet requirements of limousines.
Description
(1) technical field
The present invention relates to the brake block technical field, particularly a kind of low-noise powder metallurgy brake pad and preparation method thereof.
(2) background technique
Brake block also is brake rubber block, is the breaking piece of most critical, and the quality of all braking effects all is that brake block plays a decisive role.Along with the fast development of national economy, the people's lives level of consumption improves constantly, and convenience and the travelling comfort of transporting is required also to improve constantly, so a kind of performance is high, noise is low, car high comfort becomes the inexorable trend of improving the quality of living.Existing conventional brake material, such as semi-metallic based composite, no matter be friction factor and running stability, or wear resistance, thermal conductivity, the aspects such as stopping distance all can not satisfy the needs of high comfort car, in the braking process of car travelling speed greater than 200Km/h, because friction catch, the kinetic energy of vehicle almost all is converted into frictional heat, make the temperature rise of friction pair very high, cause the friction factor of the semi-metallic based synthetic brake block of tradition unstable, noise obviously improves, brake block is aging, cracking, the wearing and tearing aggravation, shorten working life, can't satisfy the braking needs of limousine.
(3) summary of the invention
The present invention is in order to remedy the deficiencies in the prior art, provides that a kind of noise probability of occurrence is little, the low-noise powder metallurgy brake pad of stable friction factor and preparation method thereof.
The present invention is achieved through the following technical solutions:
A kind of low-noise powder metallurgy brake pad is characterized in that: the material of brake block comprises the component of following weight percentage: brass powder 50%-65%, iron powder 4%-8%, soft foam ferrous powder 2%-8%, aluminium powder 4%-8%, hollow aluminosilicate ball 2%-6%, graphite 5%-10%, molybdenum disulfide 3%-6%, vermiculite 2%-4%, carbonized titanium powder 2%-8%, toughening carbon fiber reinforced 2%-7%.
This low-noise powder metallurgy brake pad, its preferred scheme is: the material of brake block comprises the component of following weight percentage: brass powder 50%-60%, iron powder 4%-8%, soft foam ferrous powder 2%-7%, aluminium powder 4%-6%, hollow aluminosilicate ball 2%-5%, graphite 6%-9%, molybdenum disulfide 3%-5%, vermiculite 2%-4%, carbonized titanium powder 2%-6%, toughening carbon fiber reinforced 3%-7%.
The granularity of this each material of brake block is respectively: brass powder 150-200 order, iron powder 150-200 order, soft foam ferrous powder 80-100 order, aluminium powder 150-180 order, hollow aluminosilicate ball 100-120 order, graphite 80-120 order, molybdenum disulfide 200-230 order, vermiculite 40-60 order, carbonized titanium powder 200-260 order, toughening carbon fiber reinforced 6-10 micron (length).
The granularity preferred version of this each material of brake block is: brass powder 170 orders, iron powder 180 orders, soft foam ferrous powder 90 orders, aluminium powder 160 orders, hollow aluminosilicate ball 100 orders, graphite 100 orders, molybdenum disulfide 220 orders, vermiculite 50 orders, carbonized titanium powder 240 orders, toughening carbon fiber reinforced 8 microns (length).
The preparation method of this low-noise powder metallurgy brake pad is characterized in that: comprise the steps:
(1) raw material is mixed: take by weighing the material of brake block by proportioning, put into batch mixer and be mixed evenly;
(2) sintering is hot-forming: with the above-mentioned powder stock that the mixes mould of packing into, it is hot-forming and get final product to put into the sintering furnace sintering after the compression molding, and wherein sintering temperature is 900 ℃ ± 10 ℃, and sintering time is 20-30min.
Sintering hot pressing is for carrying out under the ammonia atmosphere protection in the step (2).
The beneficial effect of low-noise powder metallurgy brake pad of the present invention and preparation method thereof is: take copper with high thermal conductivity and good plasticity as matrix; add iron alloyage in sintering process; reduce sintering temperature; improve frictional behaviour; add vermiculite; carbonized titanium powder improves friction factor; use graphite; molybdenum disulfide is as lubricant component; the protection antithesis; stablize friction factor; add vermiculite; soft foam ferrous powder; the hollow aluminosilicate ball forms some micropores in sintering process; significantly reduce the brake block noise; the brake block of producing thus is little to the wearing and tearing of antithesis dish; the noise probability of occurrence is little, stable friction factor, inordinate wear; environmental protection; braking ability all can satisfy the requirement of limousine.
(4) embodiment
Brake pad material of the present invention be with brass as body material, as alloying material, (raw material of brake block forms and comprise body material, alloying material, increases mill material, antifriction material and reinforcing material), wherein body material was Cuprum alloy with iron.Copper has high heat conductivity, has guaranteed well heat radiation in friction process; Copper has preferably plasticity, is easy to compacting; Copper has relatively low fusing point, and the manufacturability of sintering is better; Copper can also form transfer membrane between friction material and antithesis, can improve friction torque and improve friction factor, can reduce again the damage to antithesis, improves the wear-resisting property of whole friction pair.Described alloying material mainly contains iron powder, aluminium powder, soft foam ferrous powder, the affiliation that adds of these materials is carried out alloyage with base material copper in sintering process, increase the intensity of brake block, soft foam ferrous powder is used for friction material simultaneously, can regulate frictional behaviour, make stable friction factor, lighter with respect to its proportion of reducing iron powder, its many hollow structures material brake noise in use that is conducive to reduce friction especially.Described to increase the mill material mainly be carbonized titanium powder, vermiculite, toughening carbon fiber reinforced, and carbonized titanium powder has high strength, high hardness, can strengthen the wear-resisting property of brake block, improves friction factor; Vermiculite mainly is to utilize it to have excellent sound absorption function, reduces the noise of break; Toughening carbon fiber reinforced have a high specific strength, and high ratio modulus obviously improves intensity and the toughness of brake block.Described antifriction material is mainly graphite and molybdenum disulfide, because graphite has stratiform structure, can effectively reduce friction factor; in friction process, can play good anti-attrition effect; also can reduce simultaneously the wearing and tearing of brake block, friction factor stablized in the protection antithesis.The brake block of producing thus is little to the wearing and tearing of antithesis dish, stable friction factor, and the noise probability of occurrence is little, and inordinate wear, environmental protection, braking ability all can satisfy the requirement of limousine.
The preparation method of low-noise powder metallurgy brake pad of the present invention comprises the steps:
Batch mixing:
, pour the stirrer fragmentation into, and stir according to formulation ratio by automatic batching system or manual operations various raw material that the friction surface of brake block is required.The friction material that stirs and the steel backing that is painted with glue send mold pressing procedure together, process semi finished brake disc.
Hot pressing:
Mold pressing divides weighing and two steps of compacting to carry out.
Weighing: according to various raw materials and the weight that compacted products needs, weighing friction material on electronic platform scale.The complete friction material of weighing is put into check weighing on the checking weight weigh, and the friction material that guarantees to use is in the weight range of " reference value ± 1g ".
Compacting: after having installed and fixed mould, be 16MPa according to the pressing process system pressure of stipulating, back pressure pressure 12MPa, 300 seconds dwell times.190 ℃ of press patrixes, 195 ℃ of middle counterdies wait mould to be warmed up to and begin after the predetermined range to produce.All pour friction material into die cavity in the operating process, the matched moulds compacting; After arriving the time of process stipulation, the press automatic die sinking, with transferred product in Revolving disc.
Grinding:
Use modular grinding machine processing friction material surface, make friction material surface reach certain thickness, parallelism, planeness requirement; Use fluting, grind oblique machine, by slotted wheel saw blade or cup emery wheel, the surface of processing friction material processes groove or inclined-plane.
Removing surface:
Divide polishing and two steps of sandblast to carry out.First on buffing machine, by wire wheel, the burr of cleaning brake block steel back periphery, flash, overlap etc.; On sandblasting machine, by brown corundum abrasive, the dirt above the cleaning brake block steel back, corrosion etc. are in order to guarantee the quality requirement of postorder processing again.
Spraying:
The product that removing surface is complete, according to client's requirement, with the powder of different colours, different brightness cover above the brake block steel back, side and friction material side.Product is by drying oven, through states such as melting, smooth and level, curing, reaches certain adhesion requirement.
Beat code:
Use ink jet numbering machine and ink special, on the steel backing surface, vibration damping sheet is surperficial or the friction material side, the different clients' of spray printing different information and the processing lot number of product are so that product reviewing after selling.
Installation accessories:
Install and fix noise reduction, warning device at brake block steel back.
Packing:
As requested, with the finished product brake block, use seaming machine, thermal contraction machine, mounted box after shrinking by plastic uptake film vacuum, or use skin packaging machine, by fit film product and cardboard vacuum are pasted the jail.
Below in conjunction with specific embodiment low-noise powder metallurgy brake pad of the present invention and preparation method thereof is described in further detail.
Embodiment 1:
Get respectively 55 kilograms of brass powders; 6 kilograms of iron powders; 4 kilograms of soft foam ferrous powders; 5 kilograms of aluminium powders; 3 kilograms in hollow aluminosilicate ball; 6 kilograms in graphite; 3 kilograms of molybdenum disulfide; 3 kilograms of vermiculites; 8 kilograms of carbonized titanium powders; toughening carbon fiber reinforced 7 kilograms; the granularity of each material is respectively: brass powder 170 orders; iron powder 180 orders; soft foam ferrous powder 90 orders; aluminium powder 160 orders; hollow aluminosilicate ball 100 orders; graphite 100 orders; molybdenum disulfide 220 orders; vermiculite 50 orders; carbonized titanium powder 240 orders; toughening carbon fiber reinforced 8 microns (length); take by weighing the brake block powder stock according to above-mentioned weight; put into V-type batch mixer batch mixing 30min evenly after; it is compressing to put into the close powder metallurgy formation press machine of FSP series numerical control high-precision, and 900 ℃ of sintering 25min under the ammonia atmosphere protection in the mesh belt type powder metallurgy sintering furnace are through finishing; shaping; obtain the low-noise powder metallurgy brake pad of stable performance after multiple the pressure.When temperature was higher than 700 ℃, the heat fade phenomenon was not obvious, and braking ability is stable, and noise less than 2%, is zero during greater than 80db during greater than 70db; The friction factor excursion is little, 0.37＜μ＜0.45, and wear rate is 0.37 * 10
4Mg/Nm.
Embodiment 2:
Get respectively 50 kilograms of brass powders; 8 kilograms of iron powders; 8 kilograms of soft foam ferrous powders; 8 kilograms of aluminium powders; 6 kilograms in hollow aluminosilicate ball; 10 kilograms in graphite; 4 kilograms of molybdenum disulfide; 2 kilograms of vermiculites; 2 kilograms of carbonized titanium powders; toughening carbon fiber reinforced 2 kilograms; the granularity of each material is respectively: brass powder 150 orders; iron powder 150 orders; soft foam ferrous powder 80 orders; aluminium powder 150 orders; hollow aluminosilicate ball 110 orders; graphite 80 orders; molybdenum disulfide 200 orders; vermiculite 40 orders; carbonized titanium powder 200 orders; toughening carbon fiber reinforced 6 microns (length); take by weighing the brake block powder stock according to above-mentioned weight; put into V-type batch mixer batch mixing 30min evenly after; it is compressing to put into the close powder metallurgy formation press machine of FSP series numerical control high-precision, and 890 ℃ of sintering 30min under the ammonia atmosphere protection in the mesh belt type powder metallurgy sintering furnace are through finishing; shaping; obtain the low-noise powder metallurgy brake pad of stable performance after multiple the pressure.When temperature was higher than 700 ℃, the heat fade phenomenon was not obvious, and braking ability is stable, and noise less than 2.2%, is zero during greater than 80db during greater than 70db; The friction factor excursion is little, 0.39＜μ＜0.45, and wear rate is 0.37 * 10
4Mg/Nm.
Embodiment 3:
Brass powder is 65 kilograms respectively; 4 kilograms of iron powders; 2 kilograms of soft foam ferrous powders; 4 kilograms of aluminium powders; 2 kilograms in hollow aluminosilicate ball; 5 kilograms in graphite; 6 kilograms of molybdenum disulfide; 4 kilograms of vermiculites; 4 kilograms of carbonized titanium powders; toughening carbon fiber reinforced 4 kilograms; the granularity of each material is respectively: brass powder 200 orders; iron powder 200 orders; soft foam ferrous powder 100 orders; aluminium powder 180 orders; hollow aluminosilicate ball 120 orders; graphite 120 orders; molybdenum disulfide 230 orders; vermiculite 60 orders; carbonized titanium powder 260 orders; toughening carbon fiber reinforced 10 microns (length); take by weighing the brake block powder stock according to above-mentioned weight; put into V-type batch mixer batch mixing 30min evenly after; it is compressing to put into the close powder metallurgy formation press machine of FSP series numerical control high-precision, and 910 ℃ of sintering 20min under the ammonia atmosphere protection in the mesh belt type powder metallurgy sintering furnace are through finishing; shaping; obtain the low-noise powder metallurgy brake pad of stable performance after multiple the pressure.When temperature was higher than 700 ℃, the heat fade phenomenon was not obvious, and braking ability is stable, and noise less than 2.8%, is zero during greater than 80db during greater than 70db; The friction factor excursion is little, 0.38＜μ＜0.47, and wear rate is 0.41 * 10
4Mg/Nm.
Toughening carbon fiber reinforced is a kind of of chopped strand, and carbon fiber all has toughening effect generally speaking, but toughening carbon fiber reinforced toughening effect is better.It is toughening carbon fiber reinforced that the toughening carbon fiber reinforced employing toray of the embodiment of the invention is produced.
Claims (6)
1. low-noise powder metallurgy brake pad, it is characterized in that: the material of brake block comprises the component of following weight percentage: brass powder 50%-65%, iron powder 4%-8%, soft foam ferrous powder 2%-8%, aluminium powder 4%-8%, hollow aluminosilicate ball 2%-6%, graphite 5%-10%, molybdenum disulfide 3%-6%, vermiculite 2%-4%, carbonized titanium powder 2%-8%, toughening carbon fiber reinforced 2%-7%.
2. low-noise powder metallurgy brake pad according to claim 1, it is characterized in that: the material of brake block comprises the component of following weight percentage: brass powder 50%-60%, iron powder 4%-8%, soft foam ferrous powder 2%-7%, aluminium powder 4%-6%, hollow aluminosilicate ball 2%-5%, graphite 6%-9%, molybdenum disulfide 3%-5%, vermiculite 2%-4%, carbonized titanium powder 2%-6%, toughening carbon fiber reinforced 3%-7%.
3. low-noise powder metallurgy brake pad according to claim 1 and 2, it is characterized in that: the granularity of this each material of brake block is respectively: brass powder 150-200 order, iron powder 150-200 order, soft foam ferrous powder 80-100 order, aluminium powder 150-180 order, hollow aluminosilicate ball 100-120 order, graphite 80-120 order, molybdenum disulfide 200-230 order, vermiculite 40-60 order, carbonized titanium powder 200-260 order, toughening carbon fiber reinforced 6-10 micron.
4. low-noise powder metallurgy brake pad according to claim 3, it is characterized in that: the granularity of this each material of brake block is respectively: brass powder 170 orders, iron powder 180 orders, soft foam ferrous powder 90 orders, aluminium powder 160 orders, hollow aluminosilicate ball 100 orders, graphite 100 orders, molybdenum disulfide 220 orders, vermiculite 50 orders, carbonized titanium powder 240 orders, toughening carbon fiber reinforced 8 microns.
5. the preparation method of a low-noise powder metallurgy brake pad claimed in claim 1 is characterized in that: comprise the steps:
(1) raw material is mixed: take by weighing the material of brake block by proportioning, put into batch mixer and be mixed evenly;
(2) sintering is hot-forming: with the above-mentioned powder stock that the mixes mould of packing into, it is hot-forming and get final product to put into the sintering furnace sintering after the compression molding, and wherein sintering temperature is 900 ℃ ± 10 ℃, and sintering time is 20-30min.
6. the preparation method of low-noise powder metallurgy brake pad according to claim 5 is characterized in that: sintering hot pressing is for carrying out under the ammonia atmosphere protection in the step (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110282872 CN102352899B (en) | 2011-09-22 | 2011-09-22 | Low-noise powder metallurgy brake pad and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110282872 CN102352899B (en) | 2011-09-22 | 2011-09-22 | Low-noise powder metallurgy brake pad and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102352899A CN102352899A (en) | 2012-02-15 |
| CN102352899B true CN102352899B (en) | 2013-02-13 |
Family
ID=45576528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110282872 Active CN102352899B (en) | 2011-09-22 | 2011-09-22 | Low-noise powder metallurgy brake pad and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102352899B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410889A (en) * | 2013-08-15 | 2013-11-27 | 李美凤 | Saloon car brake pad doped with hollow microspheres |
| CN105647471A (en) * | 2014-11-30 | 2016-06-08 | 衡阳市安骋汽车配件有限公司 | Granule with noise reducing function and excellent heat conductive performance and preparation method thereof |
| CN105650162A (en) * | 2014-11-30 | 2016-06-08 | 衡阳市安骋汽车配件有限公司 | Particles having high-temperature declining resistance function and high heat conductivity and preparation method of particles |
| CN105650172A (en) * | 2014-11-30 | 2016-06-08 | 衡阳市安骋汽车配件有限公司 | Granules with high-temperature decay-resistant function and large porosity and preparation method of granules |
| CN105778406B (en) * | 2016-03-18 | 2018-07-10 | 华南理工大学 | Automobile-used copper-base powder metallurgy composite friction material and preparation method thereof |
| CN106084645B (en) * | 2016-06-01 | 2018-05-18 | 华南理工大学 | A kind of automobile-used resin based powder metallurgy steel fiber friction material and preparation method thereof |
| CN107559357B (en) * | 2017-07-31 | 2019-06-07 | 山东金麒麟股份有限公司 | A kind of friction material and purposes for elevator brake block |
| CN107559358B (en) * | 2017-07-31 | 2020-01-03 | 山东金麒麟股份有限公司 | Powder metallurgy material for elevator brake pad and application |
| CN109253196B (en) * | 2018-10-16 | 2020-07-14 | 北京天宜上佳高新材料股份有限公司 | Brake pad and brake friction pair using same |
| CN109469697B (en) * | 2018-12-05 | 2021-03-19 | 北京科技大学 | Fiber reinforced copper-based brake pad for high-speed train and preparation and friction braking performance thereof |
| CN114483844A (en) * | 2022-01-27 | 2022-05-13 | 摩擦一号制动科技（仙桃）有限公司 | Low-noise and good-heat-dissipation non-metal brake pad |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2212517B (en) * | 1987-11-19 | 1992-01-15 | Ferodo Ltd | Sintered metal friction facing |
| DK101296A (en) * | 1996-09-17 | 1998-03-18 | Roulunds Fabriker As | Brake lining material and method for making the same as well as brake lining |
| US20040146702A1 (en) * | 2003-01-29 | 2004-07-29 | Xinming Shao | Pure iron fiber based friction material product |
| CN101555914B (en) * | 2009-01-25 | 2013-04-10 | 瑞阳汽车零部件（仙桃）有限公司 | Rust resistance semi-metallic brake pad |
| CN101555915B (en) * | 2009-01-25 | 2013-06-12 | 瑞阳汽车零部件（仙桃）有限公司 | High-performance semi-metallic brake pad |
| CN101823856B (en) * | 2010-05-24 | 2013-01-09 | 湖南博云汽车制动材料有限公司 | Copper-free ceramic friction material with little falling ash and preparation method thereof |
| CN101839295B (en) * | 2010-05-31 | 2012-07-25 | 山东金麒麟集团有限公司 | High speed train powder metallurgy brake pad and preparation technology thereof |
-
2011
- 2011-09-22 CN CN 201110282872 patent/CN102352899B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102352899A (en) | 2012-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102352899B (en) | Low-noise powder metallurgy brake pad and preparation method thereof | |
| CN101839295B (en) | High speed train powder metallurgy brake pad and preparation technology thereof | |
| CN102965078B (en) | Friction material of disc brake pad, disc brake pad and preparation technology of disc brake pad | |
| CN108839640B (en) | Grinder for high-speed motor train unit and preparation method thereof | |
| CN102977600B (en) | Disc type brake friction material, disc type brake and disc type brake manufacturing process | |
| CN107917160B (en) | A kind of brake disc and preparation method thereof | |
| CN103553695B (en) | Carbon-ceramic composite brake disc and preparation method thereof | |
| WO2019090445A1 (en) | Wear-resistant material, locally reinforced light metal-based composite material and preparation method therefor | |
| CN102141101B (en) | Environmental-protection high-speed car brake sheet and warm-pressing process of brake sheet | |
| CN107559358A (en) | A kind of powdered metallurgical material and purposes for elevator brake block | |
| CN104789189A (en) | Disc brake pad friction material and preparation process thereof | |
| CN101177601A (en) | Method for preparing brake block by calcium sulfate crystal whisker | |
| CN106499741A (en) | Foamed ceramics strengthens light metal composite friction clutch disc, brake disc | |
| CN105086940A (en) | Disk brake pad friction material, disk brake pad and disk brake pad manufacturing technique | |
| CN107502292A (en) | One kind enhancing organic ceramic friction material and its compound method | |
| CN108571545B (en) | Friction material, brake pad made of friction material and method for manufacturing brake pad | |
| CN108708922B (en) | A kind of environment-friendly type high performance composite brake sheet material and preparation method | |
| CN102691736B (en) | Environment-friendly high wear-resistant asbestos-free brake block and electromagnetic hot pressing technique | |
| CN102794912A (en) | Preparation method of friction material for vehicle brake disc | |
| CN112980392A (en) | Wear-resistant low-noise soft brake pad and preparation method thereof | |
| CN102634320A (en) | Material of high-wear-resistance ceramic automobile brake block and preparation method thereof | |
| CN111425541A (en) | Carbon fiber brake pad and preparation method thereof | |
| CN102350498B (en) | C/C composite material brake pad and manufacturing method thereof | |
| CN109737157A (en) | A kind of ultralow abrasion synthesized brake-shoe of Europe lorry | |
| CN110723925B (en) | Curved hole runner ceramic-based brake pad composite material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 253600 Shandong city of Dezhou province Leling city Xicheng District high tech Industrial Park Applicant after: Shandong Gold Phoenix Co., Ltd. Address before: 253600 Shandong city of Dezhou province Leling city Xicheng District high tech Industrial Park Applicant before: Shandong Gold Phoenix Group Co., Ltd. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: SHANDONG GOLD PHOENIX GROUP CO., LTD. TO: SHANDONG GOLD PHOENIX CO., LTD. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |