CN102814758A - Brown corundum resin grinding wheel and preparation method thereof - Google Patents
Brown corundum resin grinding wheel and preparation method thereof Download PDFInfo
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- CN102814758A CN102814758A CN2012102671637A CN201210267163A CN102814758A CN 102814758 A CN102814758 A CN 102814758A CN 2012102671637 A CN2012102671637 A CN 2012102671637A CN 201210267163 A CN201210267163 A CN 201210267163A CN 102814758 A CN102814758 A CN 102814758A
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- resin
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- powder
- brown corundum
- grinding wheel
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- 229910052593 corundum Inorganic materials 0.000 title claims abstract description 42
- 239000010431 corundum Substances 0.000 title claims abstract description 42
- 229920005989 resin Polymers 0.000 title claims abstract description 41
- 239000011347 resin Substances 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000000227 grinding Methods 0.000 title abstract description 30
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 30
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000000843 powder Substances 0.000 claims abstract description 26
- 239000005011 phenolic resin Substances 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 12
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 11
- 229910021538 borax Inorganic materials 0.000 claims abstract description 11
- 229910052923 celestite Inorganic materials 0.000 claims abstract description 11
- 239000004328 sodium tetraborate Substances 0.000 claims abstract description 11
- 235000010339 sodium tetraborate Nutrition 0.000 claims abstract description 11
- UBXAKNTVXQMEAG-UHFFFAOYSA-L strontium sulfate Chemical compound [Sr+2].[O-]S([O-])(=O)=O UBXAKNTVXQMEAG-UHFFFAOYSA-L 0.000 claims abstract description 11
- 239000010432 diamond Substances 0.000 claims abstract description 10
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 10
- 238000000465 moulding Methods 0.000 claims description 24
- 229910001651 emery Inorganic materials 0.000 claims description 17
- 239000003082 abrasive agent Substances 0.000 claims description 16
- 239000002994 raw material Substances 0.000 claims description 13
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 8
- 239000004744 fabric Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000000748 compression moulding Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 210000000689 upper leg Anatomy 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 229910010293 ceramic material Inorganic materials 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 239000000835 fiber Substances 0.000 description 8
- 239000000945 filler Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- 239000004113 Sepiolite Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000006735 epoxidation reaction Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- -1 pottery Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229910052624 sepiolite Inorganic materials 0.000 description 1
- 235000019355 sepiolite Nutrition 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- UFTFJSFQGQCHQW-UHFFFAOYSA-N triformin Chemical compound O=COCC(OC=O)COC=O UFTFJSFQGQCHQW-UHFFFAOYSA-N 0.000 description 1
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- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention discloses a brown corundum resin grinding wheel and a preparation method of the chrome corundum resin grinding wheel. The brown corundum resin grinding wheel is prepared from the following components by weight, 50-60 parts of brown corundum grinding material, 5-10 parts of white corundum grinding material, 5-10 parts of diamond grinding material, 5-15 parts of phenolic resin powder, 2-6 parts of phenolic resin liquid, 1-2 parts of tritolyl phosphate, 5-10 parts of nano celestite powder, 5-10 parts of bauxite, 2-5 parts of borax and 2-5 parts of copper powder. According to the brown corundum resin grinding wheel, as the ceramic material is added into padding, the adhesive property is good, the grinding materials hardly fall off, the heat resistance and hardness of the resin grinding wheel are improved, cracks formed by rigid grinding are reduced, and the use efficiency and service life of the resin grinding wheel are improved further; in addition, as the copper power is added, fast heat dissipation effect is achieved, a great deal of heat generated in the cutting process of the grinding wheel can be dissipated quickly, and the effect of lowering cutting temperature is lowered.
Description
Technical field
The present invention relates to a kind of brown corundum resin wheel and preparation method thereof, belong to the grinding tool processing technique field.
Background technology
Emery wheel is topmost one type of grinding tool in the grinding.Emery wheel is in abrasive material, to add bond, the porous body of processing through pressed compact, drying and roasting.Emery wheel is a kind of that consumption is maximum in the grinding tool, use face is the widest, rotates at a high speed during use, can roughly grind the cylindrical of metal or non-metal workpiece, interior circle, plane and various profiles etc., half correct grinding and correct grinding and fluting and cut-out etc.Material in order to bonded abrasive in the emery wheel is claimed bond, intensity, impact resistance, hear resistance and the resistance to corrosion of the performance decision emery wheel of bond.At present bond mainly is divided into four kinds on pottery, resin, rubber and metal, and wherein resinoid bond intensity is high, elasticity is big, shock-resistant, is applicable to v>high-speed grinding of 50m/s, can be made into disc wheel, be used for slot grinding, cutting etc.Be referred to as resin wheel with resin as the emery wheel of bond.
Resin wheel divides by abrasive material and generally is divided into ordinary resin emery wheel and superhard resin wheel.The ordinary resin emery wheel is to be the emery wheel of main grinding composition with conventional abrasive materials such as brown corundum, brown corundum, carborundum, and superhard resin wheel is to be the emery wheel of main grinding composition with diamond or CBN.Resin wheel has that grinding force is little, grinding temperature is low, self-sharpening is good, the grinding efficiency advantages of higher, is widely used in the grinding of hard brittle materials such as carbide alloy, pottery, glass.We know; Up to now the brown corundum abrasive ratio of in resin wheel, participating in ablation only has an appointment 10%; Most of brown corundum abrasive is because of relatively poor with its adhesion; In grinding process, be heated, perhaps receive the influence of external force and too early coming off, thereby restricted the service efficiency and the life-span of resin wheel to a great extent.
Summary of the invention
The invention provides a kind of brown corundum resin wheel and preparation method thereof, in filler, added ceramic material, its adhesive property is good, makes the abrasive material difficult drop-off, and has improved the hear resistance and the hardness of resin wheel, reduces the crackle that the rigidity grinding forms.
The present invention adopts following technical scheme:
A kind of brown corundum resin wheel is characterized in that, its raw material by following weight portion is processed:
Brown corundum abrasive 50-60, white fused alumina abrasive material 5-10, diamond abrasive 5-10, phenol-formaldehyde resin powder 5-15, liquid phenolic resin 2-6, tricresyl phosphate 1-2, nanometer celestite powder 5-10, bauxite 5-10, borax 2-5, copper powder 2-5.
One of each prescription in the weight portion of described brown each raw material components of corundum resin wheel such as the following table:
| Raw material | Brown corundum abrasive | The white fused alumina abrasive material | Diamond abrasive | Phenol-formaldehyde resin powder | Liquid phenolic resin | Tricresyl phosphate | The nanometer celestite powder | Bauxite | Borax | Copper powder |
| Prescription 1 | 52 | 6 | 6 | 7 | 3 | 1.2 | 5 | 6 | 2 | 3 |
| Prescription 2 | 54 | 8 | 8 | 9 | 5 | 1.5 | 7 | 7 | 3 | 4 |
| Prescription 3 | 57 | 10 | 9 | 13 | 7 | 1.8 | 8 | 9 | 4 | 5 |
| Prescription 4 | 59 | 11 | 10 | 15 | 8 | 2.0 | 9 | 10 | 5 | 5 |
The preparation method of described brown corundum resin wheel is characterized in that comprising the following steps:
(1) mixing material
Take by weighing raw material by said ratio; Then brown corundum abrasive and carborundum powder being put into liquid phenolic resin soaks into; Abrasive material and liquid phenolic resin will be mixed even, add phenol-formaldehyde resin powder, tricresyl phosphate, nanometer celestite powder, bauxite, borax, copper powder again.
, discharging is mixed rapidly;
(2) sieve
The sieve of mixed material particles through 8-12 mesh sieve hole screened 1-2 time, be used for the molding mass of moulding through the i.e. conduct of particle of sieve;
(3) compression moulding
Take by weighing the molding mass of approrpiate wts; Be poured in the mould and shakeout; Make the molding mass thickness even; And in molding mass, add reinforced sheet reinforced sheet is flatly imbedded in the molding mass fully, adopt low temperature and pressure moulding low temperature and pressure temperature to be controlled at 80-90 ℃, press and scrape the back and be about to mould and be inverted in and carry out the demoulding on the glass plate;
(4) solidify
The emery wheel base that the demoulding is obtained moves into that heating makes its curing in the curing oven.80 ℃ are played temperature, per hour to heat up 10 ℃ speed, rise to 160-170 ℃, be incubateds after 4-5 hour and cool off naturally, reduce to room temperature and promptly get required emery wheel goods.
Described mould should be beneficial to the demoulding at die cavity shop one deck nylon paper before putting into molding mass.
Described reinforced sheet is a 20-40 thigh yarn, 6-8 purpose fiberglass gridding cloth, and the grid cloth two sides scribbles phenolic resins, with the caking property of increase with goods.
The present invention has following beneficial effect:
(1) the present invention has added ceramic material in filler, and its adhesive property is good, makes the abrasive material difficult drop-off, and has improved the hear resistance and the hardness of resin wheel, reduces the crackle that the rigidity grinding forms, thereby improves the service efficiency and the life-span of resin wheel;
(2) also added the copper powder metal dust in the filler of the present invention, rapid heat dissipation helps dissipating a large amount of heats that emery wheel is emitted fast in cutting process, plays the effect that reduces cutting temperature.
The specific embodiment
Followingly the present invention is further described through specific embodiment.
Embodiment 1
Palm fibre corundum resin wheel is processed by the raw material of following weight portion: brown corundum abrasive 52, white fused alumina abrasive material 6, diamond abrasive 6, phenol-formaldehyde resin powder 7, liquid phenolic resin 3, tricresyl phosphate 1.2, nanometer celestite powder 5, bauxite 6, borax 2, copper powder 3.
The preparation method of palm fibre corundum resin wheel may further comprise the steps:
(1) mixing material
Take by weighing raw material by said ratio; Then brown corundum abrasive and carborundum powder being put into liquid phenolic resin soaks into; Abrasive material and liquid phenolic resin will be mixed even, add phenol-formaldehyde resin powder, epoxidation triglyceride, ice crystal, quartz sand, sepiolite, copper powder again, and discharging is mixed rapidly;
(2) sieve
The sieve of mixed material particles through 8-12 mesh sieve hole screened 1-2 time, be used for the molding mass of moulding through the i.e. conduct of particle of sieve;
(3) compression moulding
Take by weighing the molding mass of approrpiate wts; Be poured in the mould and shakeout; Make the molding mass thickness even; And in molding mass, add reinforced sheet reinforced sheet is flatly imbedded in the molding mass fully, adopt low temperature and pressure moulding low temperature and pressure temperature to be controlled at 80-90 ℃, press and scrape the back and be about to mould and be inverted in and carry out the demoulding on the glass plate;
(4) solidify
The emery wheel base that the demoulding is obtained moves into that heating makes its curing in the curing oven.80 ℃ are played temperature, per hour to heat up 10 ℃ speed, rise to 160-170 ℃, be incubateds after 4-5 hour and cool off naturally, reduce to room temperature and promptly get required emery wheel goods.
Described mould should be beneficial to the demoulding at die cavity shop one deck nylon paper before putting into molding mass.
Described reinforced sheet is a 20-40 thigh yarn, 6-8 purpose fiberglass gridding cloth, and the grid cloth two sides scribbles phenolic resins, with the caking property of increase with goods.
Embodiment 2
Palm fibre corundum resin wheel is processed by the raw material of following weight portion: brown corundum abrasive 54, white fused alumina abrasive material 8, diamond abrasive 8, phenol-formaldehyde resin powder 9, liquid phenolic resin 5, tricresyl phosphate 1.5, nanometer celestite powder 7, bauxite 7, borax 3, copper powder 4.
The preparation method of palm fibre corundum resin wheel is with embodiment 1.
Embodiment 3
Palm fibre corundum resin wheel is processed by the raw material of following weight portion: brown corundum abrasive 57, white fused alumina abrasive material 10, diamond abrasive 9, phenol-formaldehyde resin powder 13, liquid phenolic resin 7, tricresyl phosphate 1.8, nanometer celestite powder 8, bauxite 9, borax 4, copper powder 5.
The preparation method of palm fibre corundum resin wheel is with embodiment 1.
Embodiment 4
Palm fibre corundum resin wheel is processed by the raw material of following weight portion: brown corundum abrasive 59, white fused alumina abrasive material 11, diamond abrasive 10, phenol-formaldehyde resin powder 15, liquid phenolic resin 8, tricresyl phosphate 2.0, nanometer celestite powder 9, bauxite 10, borax 5, copper powder 5.
The preparation method of palm fibre corundum resin wheel is with embodiment 1.
Claims (5)
1. a brown corundum resin wheel is characterized in that, its raw material by following weight portion is processed:
Brown corundum abrasive 50-60, white fused alumina abrasive material 5-10, diamond abrasive 5-10, phenol-formaldehyde resin powder 5-15, liquid phenolic resin 2-6, tricresyl phosphate 1-2, nanometer celestite powder 5-10, bauxite 5-10, borax 2-5, copper powder 2-5.
2. brown corundum resin wheel according to claim 1 is characterized in that, one of each prescription in the weight portion of described brown each raw material components of corundum resin wheel such as the following table:
。
3. the preparation method of a brown corundum resin wheel according to claim 1 or claim 2 is characterized in that comprising the following steps:
Mixing material
Take by weighing raw material by said ratio; Then brown corundum abrasive and carborundum powder being put into liquid phenolic resin soaks into; Abrasive material and liquid phenolic resin will be mixed even, add phenol-formaldehyde resin powder, tricresyl phosphate, nanometer celestite powder, bauxite, borax, copper powder again, and discharging is mixed rapidly;
Sieve
The sieve of mixed material particles through 8-12 mesh sieve hole screened 1-2 time, be used for the molding mass of moulding through the i.e. conduct of particle of sieve;
Compression moulding
Take by weighing the molding mass of approrpiate wts; Be poured in the mould and shakeout; Make the molding mass thickness even; And in molding mass, add reinforced sheet reinforced sheet is flatly imbedded in the molding mass fully, adopt low temperature and pressure moulding low temperature and pressure temperature to be controlled at 80-90 ℃, press and scrape the back and be about to mould and be inverted in and carry out the demoulding on the glass plate;
Solidify
The emery wheel base that the demoulding is obtained moves into that heating makes its curing in the curing oven, and 80 ℃ are played temperature, per hour to heat up 10 ℃ speed, rises to 160-170 ℃, be incubated after 4-5 hour and cools off naturally, reduces to room temperature and promptly gets required emery wheel goods.
4. the preparation method of brown corundum resin wheel according to claim 3 is characterized in that, described mould should be beneficial to the demoulding at die cavity shop one deck nylon paper before putting into molding mass.
5.
The preparation method of brown corundum resin wheel according to claim 3 is characterized in that, described reinforced sheet is a 20-40 thigh yarn, 6-8 purpose fiberglass gridding cloth, and the grid cloth two sides scribbles phenolic resins, with the caking property of increase with goods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210267163.7A CN102814758B (en) | 2012-07-31 | A kind of Brown Alundum resin wheel and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210267163.7A CN102814758B (en) | 2012-07-31 | A kind of Brown Alundum resin wheel and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102814758A true CN102814758A (en) | 2012-12-12 |
| CN102814758B CN102814758B (en) | 2016-11-30 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015040172A1 (en) * | 2013-09-20 | 2015-03-26 | Rhodius Schleifwerkzeuge Gmbh & Co. Kg | Abrasive medium comprising a phosphate-based filler |
| CN104924223A (en) * | 2015-05-29 | 2015-09-23 | 贵州格勒尔高新材料有限公司 | Formula of abrasives for grinding wheel |
| CN106607770A (en) * | 2015-10-27 | 2017-05-03 | 南京诺之瑞思商贸有限公司 | A microcrystalline fused alumina ceramic abrasive disc and a method for preparing the same |
| CN108214333A (en) * | 2017-12-29 | 2018-06-29 | 广州奥拓夫节能科技有限公司 | It is a kind of high-accuracy without ultra-thin resin wheel cutting sheet of net and preparation method thereof |
| CN108908147A (en) * | 2018-05-30 | 2018-11-30 | 安徽佑开科技有限公司 | A kind of resin wheel production method |
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|---|---|---|---|---|
| JP2005144653A (en) * | 2003-11-19 | 2005-06-09 | Fuji Dies Kk | Resin bond diamond grinding wheel |
| CN101691028A (en) * | 2009-09-22 | 2010-04-07 | 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 |
| CN101758463A (en) * | 2010-02-25 | 2010-06-30 | 浙江工业大学 | Self-lubricating grinding tool and preparation method thereof |
| CN101935219A (en) * | 2010-09-30 | 2011-01-05 | 福州双屹砂轮有限公司 | Efficient silicon carbide corundum rare earth ceramic composite grinding wheel and manufacture method thereof |
| CN102335885A (en) * | 2011-10-08 | 2012-02-01 | 河源市树熊超硬磨具有限公司 | Diamond grinding wheel for ceramic grinding and preparation method thereof |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005144653A (en) * | 2003-11-19 | 2005-06-09 | Fuji Dies Kk | Resin bond diamond grinding wheel |
| CN101691028A (en) * | 2009-09-22 | 2010-04-07 | 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 |
| CN101758463A (en) * | 2010-02-25 | 2010-06-30 | 浙江工业大学 | Self-lubricating grinding tool and preparation method thereof |
| CN101935219A (en) * | 2010-09-30 | 2011-01-05 | 福州双屹砂轮有限公司 | Efficient silicon carbide corundum rare earth ceramic composite grinding wheel and manufacture method thereof |
| CN102335885A (en) * | 2011-10-08 | 2012-02-01 | 河源市树熊超硬磨具有限公司 | Diamond grinding wheel for ceramic grinding and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015040172A1 (en) * | 2013-09-20 | 2015-03-26 | Rhodius Schleifwerkzeuge Gmbh & Co. Kg | Abrasive medium comprising a phosphate-based filler |
| CN104924223A (en) * | 2015-05-29 | 2015-09-23 | 贵州格勒尔高新材料有限公司 | Formula of abrasives for grinding wheel |
| CN106607770A (en) * | 2015-10-27 | 2017-05-03 | 南京诺之瑞思商贸有限公司 | A microcrystalline fused alumina ceramic abrasive disc and a method for preparing the same |
| CN106607770B (en) * | 2015-10-27 | 2018-08-17 | 南京诺之瑞思商贸有限公司 | A kind of preparation method of microcrystal fused alumina Ceramic mill disc |
| CN108214333A (en) * | 2017-12-29 | 2018-06-29 | 广州奥拓夫节能科技有限公司 | It is a kind of high-accuracy without ultra-thin resin wheel cutting sheet of net and preparation method thereof |
| CN108908147A (en) * | 2018-05-30 | 2018-11-30 | 安徽佑开科技有限公司 | A kind of resin wheel production method |
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Effective date of registration: 20170421 Address after: 529222 Guangdong Province, Taishan City, the town of 49 Changlong Industrial Zone, No. three road, No. 2 Patentee after: LANBAO ABRASIVES CO.,LTD. Address before: The three road to the east of Anhui province 237000 Lu'an economic and Technological Development Zone (Innovation Center) Patentee before: LU'AN WOLUOSHENG AGRICULTURAL TECHNOLOGY CO.,LTD. |
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Effective date of registration: 20200902 Address after: Building E-1, No. 18, Hongling Middle Road, Hongling Industrial Zone, Chonglou Town, Taishan, Jiangmen City, Guangdong Province Patentee after: Taishan Hengxun Grinding Technology Co.,Ltd. Address before: 529222 Guangdong Province, Taishan City, the town of 49 Changlong Industrial Zone, No. three road, No. 2 Patentee before: LANBAO ABRASIVES Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 |