CN101804604B - High-performance flexible-cutting resin bonded grinding wheel and production process thereof - Google Patents
High-performance flexible-cutting resin bonded grinding wheel and production process thereof Download PDFInfo
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- CN101804604B CN101804604B CN2010101808012A CN201010180801A CN101804604B CN 101804604 B CN101804604 B CN 101804604B CN 2010101808012 A CN2010101808012 A CN 2010101808012A CN 201010180801 A CN201010180801 A CN 201010180801A CN 101804604 B CN101804604 B CN 101804604B
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- minutes
- grinding wheel
- bonded grinding
- performance flexible
- resin bonded
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- Expired - Fee Related
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- 238000005520 cutting process Methods 0.000 title claims abstract description 18
- 229920005989 resin Polymers 0.000 title claims abstract description 14
- 239000011347 resin Substances 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 23
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000005011 phenolic resin Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 11
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 9
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 9
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 8
- 239000010440 gypsum Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 238000009413 insulation Methods 0.000 claims description 15
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 238000010792 warming Methods 0.000 claims description 12
- 238000005516 engineering process Methods 0.000 claims description 11
- 239000003082 abrasive agent Substances 0.000 claims description 10
- 239000000654 additive Substances 0.000 claims description 10
- 230000000996 additive effect Effects 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 239000004744 fabric Substances 0.000 claims description 9
- 229910001651 emery Inorganic materials 0.000 claims description 8
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 7
- 229910052601 baryte Inorganic materials 0.000 claims description 7
- 239000010428 baryte Substances 0.000 claims description 7
- 229910052593 corundum Inorganic materials 0.000 claims description 7
- 239000010431 corundum Substances 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 208000034189 Sclerosis Diseases 0.000 claims description 3
- 235000019628 coolness Nutrition 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract 2
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 abstract 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- 229910052960 marcasite Inorganic materials 0.000 abstract 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 abstract 1
- 229910052683 pyrite Inorganic materials 0.000 abstract 1
- 239000000835 fiber Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- -1 titanium alloy Chemical class 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The invention discloses a high-performance flexible-cutting resin bonded grinding wheel and a production process thereof. The high-performance flexible-cutting resin bonded grinding wheel is characterized in that the raw material composition comprises a grinding material comprising monocrystal aluminum oxide SA and brown aluminum oxide A, phenolic resin powder 2893 B, phenolic resin liquid PF2550, semi-hydrated gypsum CaSO41/2H2O, Fe2O3, FeS2, BaSO4 and nitrile rubber. The invention has flexibility, can be bent and can effectively improve the utilization rate and the durability of the product.
Description
Technical field
The present invention relates to a kind of emery wheel and production technology thereof, a kind of cutting of metals such as titanium alloy, stainless steel and the emery wheel and production technology thereof of grinding of can be used for of more specifically saying so.
Background technology
The resinoid bond abrasive cut-off wheel that traditional handicraft and prescription are produced is not owing to possess flexibility, inflexibility, embrittlement in use, broken easily, and can not cross feed and reconditioning, the cutting burr of workpiece must the operator more exchange device and special grinding wheel could reconditionings, the service life of product and inefficiency have caused the waste of artificial, equipment and resource.
Summary of the invention
The present invention is for avoiding above-mentioned existing in prior technology weak point, a kind of high-performance flexible-cutting resin bonded grinding wheel and production technology thereof are provided, possessing flexibility in the hope of making product, and is flexible, improves the utilization rate and the durability of product simultaneously.
The present invention adopts following technical scheme for the technical solution problem:
The characteristics of high-performance flexible-cutting resin bonded grinding wheel of the present invention are that by weight raw material consists of:
100 parts in abrasive material, in the described abrasive material by weight percentage: single alundum SA is that 20-30%, brown corundum A are 70-80%;
Phenol-formaldehyde resin powder 2893B:10-12 part;
Liquid phenolic resin PF2550:6-8 part;
Each additive is:
Semi-hydrated gypsum CaSO
41/2H
2O:3-5 part;
Fe
2O
3: 0.2-0.4 part, take from Fe
2O
3The iron oxide red of content 〉=98%;
FeS
2: 1-3 part, take from the iron sulfide of S content 〉=50%;
BaSO
4: 7-9 part, take from BaSO
4〉=85% barite;
Nitrile rubber: 2-4 part.
The characteristics of high-performance flexible-cutting resin bonded grinding wheel of the present invention also are: the compact density of described emery wheel is 2.38-2.42g/cm
3
The characteristics of the production technology of high-performance flexible-cutting resin bonded grinding wheel of the present invention are to carry out as follows:
A, 240 orders that sieve after the even mixing are stand-by with finishing in mixer in the following order after the weighing of each component material: abrasive material mixes, adds liquid phenolic resin and mixes, adds each additive and mix, and adds phenol-formaldehyde resin powder at last and finishes mixing;
B, by moulding density 2.38-2.42g/cm
3Be calculated to be in the mould of pouring auxilliary bedding course screen cloth after the weighing of moulding mixture substance into, scrape and shakeout wholely, put into upper strata screen cloth and trade mark and core circle again, mould is sent into the thickness of exerting pressure in the press bed to the emery wheel regulation after adding die cap, the release demoulding is blank;
C, described blank is placed in the electrical kiln, finish sclerosis after in electrical kiln, being room temperature from the progressively intensification of room temperature to 185 ℃, insulation and by 185 ℃ of coolings.
The characteristics of the production technology of high-performance flexible-cutting resin bonded grinding wheel of the present invention also are to be provided with the hardening temperature curve:
From room temperature, be warming up to 80 ℃ in 100 minutes; With 80 ℃ of insulations 90 minutes;
From 80 ℃, be warming up to 110 ℃ in 90 minutes; With 110 ℃ of insulations 100 minutes;
From 110 ℃, be warming up to 130 ℃ in 100 minutes; With 130 ℃ of insulations 120 minutes;
From 130 ℃, be warming up to 185 ℃ in 120 minutes; With 185 ℃ of insulations 300 minutes;
From 185 ℃, when being 60 ℃, cooling opens fire door, at room temperature come out of the stove.
Described screen cloth is: 10 orders are not less than 130 and twist with the fingers.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, the present invention makes product possess flexibility by adding the flexibilizer nitrile rubber, and is flexible;
2, optimal balance point has been found in the selection of the present invention by abrasive material, compact density and as the relation between the use amount three of the phenolic resins of bond.By further adjustment hardening temperature curve, make performances such as the service efficiency of product and durability reach maximization.
3, product of the present invention has been realized vertical cutting and a tractor serves several purposes function of laterally polishing, and saves artificial and equipment, economizes on resources, and meets the requirement of low-carbon economy.
Product of the present invention detects through national grinding materials and grinding tool product quality supervision and inspection center, meets national standard, with the stainless steel tube of cutting Φ 25*1 be the product produced of example and external like product and traditional handicraft relatively, every index sees the following form:
| Rule of origin | Product performance | Stock-removing efficiency | Durability | Remarks |
| The U.S. | 41-100×1.2×10 | Each crop of 5S/ | 42 otch/sheet | Flexible |
| Korea S | 41-100×1.2×10 | Each crop of 5S/ | 40 otch/sheet | Flexible |
| Traditional handicraft is made | 41-100×1.2×10 | Each crop of 8S/ | 1213 otch/sheet | Inflexibility |
| Product testing | 41-100×1.2×10 | Each crop of 4S/ | 58 otch/sheet | Flexible |
The specific embodiment
Present embodiment raw material by weight consists of:
100 parts in abrasive material, in the described abrasive material by weight percentage: single alundum SA is that 20-30%, brown corundum A are 70-80%;
Phenol-formaldehyde resin powder 2893B:10-12 part;
Liquid phenolic resin PF2550:6-8 part;
Each additive is:
Semi-hydrated gypsum CaSO
41/2H
2O:3-5 part;
Fe
2O
3: 0.2-0.4 part, take from Fe
2O
3The iron oxide red of content 〉=98%;
FeS
2: 1-3 part, take from the iron sulfide of S content 〉=50%;
BaSO
4: 7-9 part, take from BaSO
4〉=85% barite;
Nitrile rubber: 2-4 part.
The compact density of described emery wheel is 2.38-2.42g/cm
3
The present embodiment moulding process is following processing step:
A, 240 orders that sieve after the even mixing are stand-by with finishing in mixer in the following order after the weighing of each component material:
Abrasive material mixes, adds liquid phenolic resin and mixes, adds each additive mixing, adds phenol-formaldehyde resin powder at last and finishes mixing;
B, by moulding density 2.38-2.42g/cm
3Be calculated to be in the mould of pouring auxilliary bedding course screen cloth after the weighing of moulding mixture substance into, scrape and shakeout wholely, put into upper strata screen cloth and trade mark and core circle again, mould is sent into the thickness of exerting pressure in the press bed to the emery wheel regulation after adding die cap, the release demoulding is blank;
C, blank is placed in the electrical kiln, finish sclerosis after in electrical kiln, being room temperature from the progressively intensification of room temperature to 185 ℃, insulation and by 185 ℃ of coolings.
In concrete the enforcement, the hardening temperature curve be set be:
From room temperature, be warming up to 80 ℃ in 100 minutes; With 80 ℃ of insulations 90 minutes;
From 80 ℃, be warming up to 110 ℃ in 90 minutes; With 110 ℃ of insulations 100 minutes;
From 110 ℃, be warming up to 130 ℃ in 100 minutes; With 130 ℃ of insulations 120 minutes;
From 130 ℃, be warming up to 185 ℃ in 120 minutes; With 185 ℃ of insulations 300 minutes;
From 185 ℃, when being 60 ℃, cooling opens fire door, at room temperature come out of the stove.
Screen cloth is set is: 10 orders are not less than 130 and twist with the fingers.
In concrete the enforcement, by the span of setting, in weight portion, each material can also carry out the ester material by following each assembly ratio:
First group:
Single alundum SA:20 part, brown corundum A:80 part; Phenol-formaldehyde resin powder 2893B:10 part; Liquid phenolic resin PF2550:6 part;
Each additive is:
Semi-hydrated gypsum CaSO
41/2H
2O:3 part; Fe
2O
3: 0.2 part, take from Fe
2O
3The iron oxide red of content 〉=98%; FeS
2: 1 part, take from the iron sulfide of S content 〉=50%; BaSO
4: 7 parts, take from BaSO
4〉=85% barite; Nitrile rubber: 2 parts.
Second group:
Single alundum SA:30 part, brown corundum A:70 part; Phenol-formaldehyde resin powder 2893B:12 part; Liquid phenolic resin PF2550:8 part;
Each additive is:
Semi-hydrated gypsum CaSO
41/2H
2O:3-5 part; Fe
2O
3: 0.2-0.4 part, take from Fe
2O
3The iron oxide red of content 〉=98%; FeS
2: 3 parts, take from the iron sulfide of S content 〉=50%; BaSO
4: 9 parts, take from BaSO
4〉=85% barite; Nitrile rubber: 4 parts.
The 3rd group:
Single alundum SA:25 part; Palm fibre corundum A:75 part; Phenol-formaldehyde resin powder 2893B:11 part; Liquid phenolic resin PF2550:7 part;
Each additive is:
Semi-hydrated gypsum CaSO
41/2H
2O:4 part; Fe
2O
3: 0.3 part, take from Fe
2O
3The iron oxide red of content 〉=98%; FeS
2: 2 parts, take from the iron sulfide of S content 〉=50%; BaSO
4: 8 parts, take from BaSO
4〉=85% barite; Nitrile rubber: 3 parts.
The 4th group:
Single alundum SA:30 part; Palm fibre corundum A:70 part; Phenol-formaldehyde resin powder 2893B:11 part; Liquid phenolic resin PF2550:8 part;
Each additive is:
Semi-hydrated gypsum CaSO
41/2H
2O:5 part; Fe
2O
3: 0.4 part, take from Fe
2O
3The iron oxide red of content 〉=98%; FeS
2: 1 part, take from the iron sulfide of S content 〉=50%; BaSO
4: 8 parts, take from BaSO
4〉=85% barite; Nitrile rubber: 3 parts.
Claims (5)
1. high-performance flexible-cutting resin bonded grinding wheel is characterized in that raw material by weight consists of:
100 parts in abrasive material, in the described abrasive material by weight percentage: single alundum SA is that 20-30%, brown corundum A are 70-80%;
Phenol-formaldehyde resin powder 2893B:10-12 part;
Liquid phenolic resin PF2550:6-8 part;
Each additive is:
Semi-hydrated gypsum CaSO
41/2H
2O:3-5 part;
Fe
2O
3: 0.2-0.4 part, take from Fe
2O
3The iron oxide red of content 〉=98%;
FeS
2: 1-3 part, take from the iron sulfide of S content 〉=50%;
BaSO
4: 7-9 part, take from BaSO
4〉=85% barite;
Nitrile rubber: 2-4 part.
2. high-performance flexible-cutting resin bonded grinding wheel according to claim 1, the compact density that it is characterized in that described emery wheel is 2.38-2.42g/cm
3
3. production technology of producing high-performance flexible-cutting resin bonded grinding wheel as claimed in claim 1 or 2 is characterized in that carrying out as follows:
A, 240 orders that sieve after the even mixing are stand-by with finishing in mixer in the following order after the weighing of each component material:
Abrasive material mixes, adds liquid phenolic resin and mixes, adds each additive mixing, adds phenol-formaldehyde resin powder at last and finishes mixing;
B, by moulding density 2.38-2.42g/cm
3Be calculated to be in the mould of pouring place mat bottom screen cloth after the weighing of moulding mixture substance into, scrape and shakeout wholely, put into upper strata screen cloth and trade mark and core circle again, mould is sent into the thickness of exerting pressure in the press bed to the emery wheel regulation after adding die cap, the release demoulding is blank;
C, described blank is placed in the electrical kiln, finish sclerosis after in electrical kiln, being room temperature from the progressively intensification of room temperature to 185 ℃, insulation and by 185 ℃ of coolings.
4. the production technology of high-performance flexible-cutting resin bonded grinding wheel according to claim 3 is characterized in that being provided with the hardening temperature curve and is:
From room temperature, be warming up to 80 ℃ in 100 minutes; With 80 ℃ of insulations 90 minutes;
From 80 ℃, be warming up to 110 ℃ in 90 minutes; With 110 ℃ of insulations 100 minutes;
From 110 ℃, be warming up to 130 ℃ in 100 minutes; With 130 ℃ of insulations 120 minutes;
From 130 ℃, be warming up to 185 ℃ in 120 minutes; With 185 ℃ of insulations 300 minutes;
From 185 ℃, when being 60 ℃, cooling opens fire door, at room temperature come out of the stove.
5. the production technology of high-performance flexible-cutting resin bonded grinding wheel according to claim 4 is characterized in that described screen cloth is: 10 orders are not less than 130 and twist with the fingers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101808012A CN101804604B (en) | 2010-05-24 | 2010-05-24 | High-performance flexible-cutting resin bonded grinding wheel and production process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101808012A CN101804604B (en) | 2010-05-24 | 2010-05-24 | High-performance flexible-cutting resin bonded grinding wheel and production process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101804604A CN101804604A (en) | 2010-08-18 |
| CN101804604B true CN101804604B (en) | 2011-10-26 |
Family
ID=42606640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101808012A Expired - Fee Related CN101804604B (en) | 2010-05-24 | 2010-05-24 | High-performance flexible-cutting resin bonded grinding wheel and production process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101804604B (en) |
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| CN102179773B (en) * | 2011-03-29 | 2012-11-14 | 珠海大象磨料磨具有限公司 | High-performance green resin grinding apparatus and manufacturing method of grinding apparatus |
| CN102179775B (en) * | 2011-03-29 | 2013-07-03 | 珠海大象磨料磨具有限公司 | Resin abrasive tool for hard alloy and method for preparing resin abrasive |
| CN102179774B (en) * | 2011-03-29 | 2013-07-03 | 珠海大象磨料磨具有限公司 | Composite type multipurpose resin grinding tool and manufacturing method thereof |
| CN102729139B (en) * | 2012-07-10 | 2015-08-12 | 江苏力星通用钢球股份有限公司 | Vertical lapping machine adopts two-sided resin wheel to carry out the method for steel ball grinding |
| CN102941539A (en) * | 2012-11-27 | 2013-02-27 | 江苏苏北砂轮厂有限公司 | Production method of grinding wheel for steel tube |
| CN103056786B (en) * | 2012-12-20 | 2015-12-02 | 郑州新安华砂轮有限公司 | Resin cutting slice and preparation method thereof |
| CN103586787B (en) * | 2013-11-26 | 2016-08-31 | 常熟市巨力砂轮有限责任公司 | The preparation method of resin bond wheel |
| CN104128894B (en) * | 2014-06-26 | 2019-08-13 | 宁波大华砂轮有限公司 | A kind of preparation method of resin wheel |
| CN105081988B (en) * | 2014-12-19 | 2017-06-13 | 安徽格太信控科技有限公司 | Rubber, resin compounded abrasive wheel bonding agent and preparation method thereof |
| CN106826592A (en) * | 2016-08-21 | 2017-06-13 | 刘焕章 | A kind of high-performance emery wheel and preparation method thereof |
| CN106392921B (en) * | 2016-11-24 | 2018-11-06 | 东莞市金利威磨料磨具有限公司 | A kind of formula and its processing method of elastic grinding disk |
| CN106891271B (en) * | 2017-04-22 | 2019-05-07 | 河南工业大学 | A kind of stainless steel cut grinding wheel and preparation method thereof |
| CN108326763A (en) * | 2018-02-02 | 2018-07-27 | 福建胜多砂轮有限公司 | Composite material grinding wheel grinding tool |
| CN110253459A (en) * | 2019-05-17 | 2019-09-20 | 珠海大象磨料磨具有限公司 | Resin compounded grinding wheel, resin compounded grinding tool and preparation method thereof |
| CN110666711A (en) * | 2019-08-28 | 2020-01-10 | 鄂州市兴方磨具有限公司 | Integrated sand roller and manufacturing method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6440278A (en) * | 1987-08-04 | 1989-02-10 | Daiwa Kasei Kogyo Kk | Super abrasive elastic grindstone |
| CN101269480A (en) * | 2007-03-20 | 2008-09-24 | 鞍山市砂轮厂 | Process for manufacturing roller abrasive wheel |
| CN100482418C (en) * | 2007-09-20 | 2009-04-29 | 武汉法山磨料磨具有限公司 | Resin abrasive wheel containing teflon dry-grinding lubricant agent and manufacturing method thereof |
| CN101691028B (en) * | 2009-09-22 | 2011-02-09 | 武汉法山磨料磨具有限公司 | Manufacturing method for resin grinding wheel cutting piece with function of cutting soft and hard materials |
| CN101695827B (en) * | 2009-10-15 | 2011-05-18 | 江苏耐尔坚砂轮有限公司 | Large-diameter high-speed cutting and high-speed heavy load grinding resin wheel |
-
2010
- 2010-05-24 CN CN2010101808012A patent/CN101804604B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101804604A (en) | 2010-08-18 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Chaohu Super Grinding Wheel Co., Ltd. Assignor: Gao Chengxi Contract record no.: 2012340000147 Denomination of invention: High-performance flexible-cutting resin bonded grinding wheel and production process thereof Granted publication date: 20111026 License type: Exclusive License Open date: 20100818 Record date: 20120503 |
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| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Chaohu Super Grinding Wheel Co., Ltd. Assignor: Gao Chengxi Contract record no.: 2012340000147 Date of cancellation: 20120607 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Chaohu Super Grinding Wheel Co., Ltd. Assignor: Gao Chengxi Contract record no.: 2012340000185 Denomination of invention: High-performance flexible-cutting resin bonded grinding wheel and production process thereof Granted publication date: 20111026 License type: Exclusive License Open date: 20100818 Record date: 20120607 |
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Effective date of registration: 20160722 Address after: 238171 Anhui city of Ma'anshan province Hanshan County Qingxi Industrial Park Patentee after: Anhui Di Zuan emery wheel Co., Ltd Address before: 238000 Anhui Province, Chaohu City Industrial Park, Chaohu Huashan resin grinding wheel Co., diamond whetstone Patentee before: Gao Chengxi |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111026 Termination date: 20170524 |