CN104722843A - Novel saw blade and manufacturing method thereof - Google Patents
Novel saw blade and manufacturing method thereof Download PDFInfo
- Publication number
- CN104722843A CN104722843A CN201510083162.0A CN201510083162A CN104722843A CN 104722843 A CN104722843 A CN 104722843A CN 201510083162 A CN201510083162 A CN 201510083162A CN 104722843 A CN104722843 A CN 104722843A
- Authority
- CN
- China
- Prior art keywords
- saw blade
- saw bit
- particle
- bit matrix
- cutting
- 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.)
- Pending
Links
Landscapes
- Powder Metallurgy (AREA)
Abstract
The invention discloses a novel saw blade and a manufacturing method thereof. The novel saw blade comprises a saw blade base body and cutting particles. The novel saw blade is characterized in that the cutting particles are arranged on a cutting face of the outer edge of the saw blade base body, and the cutting particles on the cutting face do not exceed the side face of the saw blade base body in the axial direction. As the cutting particles are just arranged on the cutting face of the saw blade base body and do not exceed the two sides of the saw blade base body, the thickness of all parts of the finished saw blade is uniform, the flatness of a notch is improved in the cutting process, the notch is not prone to bending in the cutting process, and the quality of a work-piece can be promoted easily.
Description
Technical field
The present invention relates to cutting tool technical field, particularly relate to a kind of Novel saw blade and manufacture method thereof.
Background technology
At building field, builder often needs to cut on the materials such as plank, ceramic tile, floor tile, and the both sides at the saw bit matrix edge of common saw blade all can have cutting particle usually, therefore cause saw blade became uneven, when cutting, otch easily bends, thus affects the quality of building.
For timber; frequent meeting encounters nail when cutting; usually having and stop cutting and continue cutting two kinds of processing modes, in order to promote operating efficiency, selecting to continue cutting better; and for the saw blade of existing market department; due to became uneven, cutting nail is very painstaking, and easily causes otch uneven; and joint-cutting is comparatively large, waste material.
Simultaneously, when lifesaving escape, due to it is pressed for time, race against time, a efficient saw blade is very important, and saw blade on market when cutting lancing, meet the defects such as nail cutting is slow and seem very fatal, substantially prolongs the lifesaving time, reduce lifesaving efficiency, such as, when there being the wounded to be crushed under reinforced concrete plate, common saw blade just cannot be rescued rapidly.
Summary of the invention
The object of the invention is to solve problem set forth above, provide a kind of and can cut various material, cutting efficiency is high, otch is smooth Novel saw blade.
Technical scheme is as follows:
A kind of Novel saw blade, comprise saw bit matrix and cutting particle, it is characterized in that, described cutting particle is arranged on the cut surface of saw bit matrix outer rim, and the cutting particle on described cut surface is no more than the side of saw bit matrix in the axial direction.
As preferably, the cut surface on described cutting particle and saw bit matrix is fixed together by soldering paste.
As preferably, described cutting particle is hard alloy particle or PCD particle, and the diameter of described cutting particle is no more than the thickness of saw bit matrix.
As preferably, the material of described hard alloy particle is any one or two kinds of YG6 and YG8, and the material of described hard alloy particle can also be any one or two kinds of YG6, YG8 and other trade mark carbide alloy.
Meanwhile, the invention allows for a kind of manufacture method of Novel saw blade, comprise the following steps:
1), by the saw bit matrix overlap of at least two pieces of same model sizes be fixed together, make the cut surface of all saw bit matrixes be on same;
2), on the cut surface of all saw bit matrixes solder paste application, and sprinkle cutting particle equably;
3), by all saw bit matrixes separately, and by exotic material every sheet saw bit matrix separated and be fixed together;
4), by being separated fixing saw bit matrix by exotic material dry, and send into continous way gas shield stove sintering; Sintered by soldering oven, cutting particle can be securely fixed on saw bit matrix;
5) saw bit matrix of finished product is obtained after, having sintered.
As preferably, described step 4) in the temperature of drying be 90 ~ 120 DEG C, the temperature of sintering is 980 ~ 1050 degrees Celsius, and the time of sintering is 8.75 ~ 70min.
As preferably, described step 2) in cutting particle be hard alloy particle or PCD particle, the diameter of described cutting particle is no more than the thickness of saw bit matrix.
Carbide alloy has that hardness is high, wear-resisting, intensity and a series of premium properties such as toughness is better, heat-resisting, corrosion-resistant, particularly its high rigidity and wearability, even if also substantially remain unchanged at the temperature of 500 DEG C, very high hardness is still had 1000 DEG C time, therefore, carbide alloy can cut timber and iron and steel effectively.
PCD is polycrystalline diamond, it utilizes unique directional blasting method to be obtained by graphite-made, the shock wave of detonating explosive directional blasting makes metal film flying accelerate flight, clash into graphite flake thus cause graphite to be converted into polycrystalline diamond, its structure is very similar to natural diamond, is combined into by unsaturated bond, has good toughness, the cutter made by PCD is not easily produced when cutting and bursts apart, and is usually used in cutting tile, floor tile etc.
As preferably, the material of described hard alloy particle is the combination of any one or any two kinds of YG6, YG7 and YG8.
As preferably, described step 3) in exotic material be graphite cake, this graphite cake adopts high purity graphite plate, graphite cake has good conductivity, high temperature resistant, antiacid, caustic corrosion and easily processing wait superperformance, high purity graphite plate selects high-quality petroleum coke to be raw material, adopt advanced production technology and device fabrication, it is large that product has density, resistance to compression and High anti bending strength, the porosity is low, resistance to ablation, the features such as acidproof alkali, for metallurgical furnace, resistance furnace, furnace lining material, chemical industry equipment, machine die, special-shaped graphite piece processing the selection of material, therefore, high purity graphite plate can effectively prevent saw bit matrix to be out of shape when sintering.
As preferably, the material of described saw bit matrix is 65Mn steel plate, and thickness is 1 ~ 5mm.
Beneficial effect of the present invention is as follows:
1, cutting particle is only arranged on the cut surface of saw bit matrix, and not exceeding the both sides of saw bit matrix, thus make finished product saw blade thickness everywhere consistent, promoting the flatness of otch when cutting, and when cutting, otch is not flexible, is conducive to the quality of lifting workpieces;
2, adopt hard alloy particle not only can cut timber, but also nail nail in wood can be cut, in conjunction with the saw blade that thickness is consistent, more improve the efficiency of nail in cutting timber;
3, adopt PCD particle can cutting tile, floor tile etc., coordinate the saw blade that thickness is consistent, can not only cutting efficiency be promoted, and the smooth, meticulous of otch can be ensured;
4, saw bit matrix overlap is fixed together, and the mode that the multiple blade saw sheet matrix of solder paste application is processed together on cut surface, greatly improve the working (machining) efficiency of saw blade, use manpower and material resources sparingly, thus reduce production cost, optimize production technology;
5, sheet saw bit matrix will do not had to separate oven dry, sintering by exotic material, and effectively can prevent saw bit matrix from deforming in the process of oven dry, sintering, affect the quality of finished product saw blade.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is that multiple blade saw sheet matrix overlaps and sprinkles the structural representation of cutting particle;
Fig. 4 is that multiple blade saw sheet matrix is separated the structural representation be fixed together by exotic material;
In figure: 1. saw bit matrix, 2. cut surface, 3. cut particle, 4. exotic material.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are further elaborated:
As shown in Figure 1,2,3, 4, a kind of Novel saw blade that the present invention mentions, comprise saw bit matrix 1 and cutting particle 3, it is characterized in that, described cutting particle 3 is arranged on the cut surface 2 of saw bit matrix 1 outer rim, and the cutting particle 3 on described cut surface 2 is no more than the side of saw bit matrix 1 in the axial direction.
Described cutting particle 3 is fixed together by soldering paste with the cut surface 2 on saw bit matrix 1.
Described cutting particle 3 is hard alloy particle or PCD particle, and the diameter of described cutting particle 3 is no more than the thickness of saw bit matrix 1.
The material of described hard alloy particle is any one or two kinds of YG6 and YG8, and the material of described hard alloy particle can also be any one or two kinds of YG6, YG8 and other trade mark carbide alloy.
The present invention also refer to a kind of manufacture method of Novel saw blade, it is characterized in that, comprises the following steps:
1), by saw bit matrix 1 overlap of at least two pieces of same model sizes be fixed together, make the cut surface 2 of all saw bit matrixes 1 be on same; Bolt and nut is adopted to be fixed to the multiple blade saw sheet matrix 1 coordinated overlaping with the through hole in the middle of saw bit matrix 1, simply effectively, easy accessibility;
2), on the cut surface 2 of all saw bit matrixes 1 solder paste application, and sprinkle equably cutting particle 3;
3), by all saw bit matrixes 1 separately, and by exotic material 4 every sheet saw bit matrix 1 separated and be fixed together; The middle part of exotic material 4 is provided with the through hole identical with saw bit matrix 1, saw bit matrix 1 also adopts bolt and nut to coordinate the through hole in the middle of saw bit matrix and exotic material to be fixed after being separated by exotic material 4, not only dismounting is simple, effective, and with step 1) adopt same fixed form, decrease machining tool, make process more simple, also reduce production cost simultaneously;
4), by being separated fixing saw bit matrix 1 by exotic material 4 dry, and send into continous way gas shield stove sintering;
5) saw blade of finished product is obtained after, having sintered.
Described step 4) in dry temperature be 90 ~ 120 DEG C, the temperature of sintering is 980 ~ 1050 degrees Celsius, and the time of sintering is 8.75 ~ 70min.
Described step 2) in cutting particle 3 be hard alloy particle or PCD particle, the diameter of described cutting particle 3 is no more than the thickness of saw bit matrix 1.
The material of described hard alloy particle is the combination of any one or any two kinds of YG6, YG7 and YG8.
Described step 3) in exotic material 4 be graphite cake.
The material of described saw bit matrix 1 is 65Mn steel plate, and thickness is 1 ~ 5mm.The thickness of the thinnest 1mm is significantly smaller than the thickness of common saw blade 3mm, and joint-cutting is less, and for the diameter of different size, its minimum thickness is as shown in the table:
| Diameter dimension (in) | Minimum thickness (mm) |
| 4 | 1 |
| 4.5 | 1 |
| 5 | 1.2 |
| 6 | 1.2 |
| 7 | 1.8 |
| 8 | 1.8 |
| 9 | 1.8 |
| 10 | 2 |
| 12 | 2 |
Embodiment 1
1), by saw bit matrix 1 overlap of at least two pieces of same model sizes be fixed together, make the cut surface 2 of all saw bit matrixes 1 be on same;
2), on the cut surface 2 of all saw bit matrixes 1 solder paste application, and sprinkle equably cutting particle 3;
3), by all saw bit matrixes 1 separately, and by exotic material 4 every sheet saw bit matrix 1 separated and be fixed together;
4), by being separated fixing saw bit matrix 1 by exotic material 4 dry, bake out temperature is 90 DEG C, and sends into continous way gas shield stove sintering, and sintering temperature is 980 DEG C, and sintering time is 8.75min;
5) saw blade of finished product is obtained after, having sintered.
Embodiment 2
1), by saw bit matrix 1 overlap of at least two pieces of same model sizes be fixed together, make the cut surface 2 of all saw bit matrixes 1 be on same;
2), on the cut surface 2 of all saw bit matrixes 1 solder paste application, and sprinkle equably cutting particle 3;
3), by all saw bit matrixes 1 separately, and by exotic material 4 every sheet saw bit matrix 1 separated and be fixed together;
4), by being separated fixing saw bit matrix 1 by exotic material 4 dry, bake out temperature is 100 DEG C, and sends into continous way gas shield stove sintering, and sintering temperature is 1000 DEG C, and sintering time is 20min;
5) saw blade of finished product is obtained after, having sintered.
Embodiment 3
1), by saw bit matrix 1 overlap of at least two pieces of same model sizes be fixed together, make the cut surface 2 of all saw bit matrixes 1 be on same;
2), on the cut surface 2 of all saw bit matrixes 1 solder paste application, and sprinkle equably cutting particle 3;
3), by all saw bit matrixes 1 separately, and by exotic material 4 every sheet saw bit matrix 1 separated and be fixed together;
4), by being separated fixing saw bit matrix 1 by exotic material 4 dry, bake out temperature is 110 DEG C, and sends into continous way gas shield stove sintering, and sintering temperature is 1020 DEG C, and sintering time is 50min;
5) saw blade of finished product is obtained after, having sintered.
Embodiment 4
1), by saw bit matrix 1 overlap of at least two pieces of same model sizes be fixed together, make the cut surface 2 of all saw bit matrixes 1 be on same;
2), on the cut surface 2 of all saw bit matrixes 1 solder paste application, and sprinkle equably cutting particle 3;
3), by all saw bit matrixes 1 separately, and by exotic material 4 every sheet saw bit matrix 1 separated and be fixed together;
4), by being separated fixing saw bit matrix 1 by exotic material 4 dry, bake out temperature is 120 DEG C, and sends into continous way gas shield stove sintering, and sintering temperature is 1050 DEG C, and sintering time is 70min;
5) saw blade of finished product is obtained after, having sintered.
Claims (10)
1. a Novel saw blade, comprise saw bit matrix (1) and cutting particle (3), it is characterized in that, described cutting particle (3) is arranged on the cut surface (2) of saw bit matrix (1) outer rim, and the cutting particle (3) on described cut surface (2) is no more than the side of saw bit matrix (1) in the axial direction.
2. Novel saw blade according to claim 1, is characterized in that, described cutting particle (3) is fixed together by soldering paste with the cut surface (2) on saw bit matrix (1).
3. Novel saw blade according to claim 1, is characterized in that, described cutting particle (3) is hard alloy particle or PCD particle, and the diameter of described cutting particle (3) is no more than the thickness of saw bit matrix (1).
4. Novel saw blade according to claim 3, is characterized in that, the material of described hard alloy particle is any one or two kinds of YG6 and YG8.
5. as a manufacture method for the Novel saw blade according to Claims 1-4, it is characterized in that, comprise the following steps:
1), by saw bit matrix (1) overlap of at least two pieces of same model sizes be fixed together, make the cut surface of all saw bit matrixes (1) (2) be on same;
2) the upper solder paste application of the cut surface (2), in all saw bit matrixes (1), and sprinkle cutting particle (3) equably;
3), by all saw bit matrixes (1) separately, and by exotic material (4) every sheet saw bit matrix (1) is separated and be fixed together;
4), by being separated fixing saw bit matrix (1) by exotic material (4) dry, and send into continous way gas shield stove sintering;
5) saw blade of finished product is obtained after, having sintered.
6. the manufacture method of Novel saw blade according to claim 5, is characterized in that, described step 4) in dry temperature be 90 ~ 120 DEG C, the temperature of sintering is 980 ~ 1050 degrees Celsius, and the time of sintering is 8.75 ~ 70min.
7. the manufacture method of the Novel saw blade according to claim 5 or 6; it is characterized in that; described step 2) in cutting particle (3) be hard alloy particle or PCD particle, the diameter of described cutting particle (3) is no more than the thickness of saw bit matrix (1).
8. the manufacture method of Novel saw blade according to claim 7, is characterized in that, the material of described hard alloy particle is the combination of any one or any two kinds of YG6, YG7 and YG8.
9. the manufacture method of Novel saw blade according to claim 7, is characterized in that, described step 3) in exotic material (4) be graphite cake.
10. the manufacture method of Novel saw blade according to claim 7, is characterized in that, the material of described saw bit matrix (1) is 65Mn steel plate, and thickness is 1 ~ 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510083162.0A CN104722843A (en) | 2015-02-16 | 2015-02-16 | Novel saw blade and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510083162.0A CN104722843A (en) | 2015-02-16 | 2015-02-16 | Novel saw blade and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104722843A true CN104722843A (en) | 2015-06-24 |
Family
ID=53447584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510083162.0A Pending CN104722843A (en) | 2015-02-16 | 2015-02-16 | Novel saw blade and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104722843A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111330820A (en) * | 2020-03-10 | 2020-06-26 | 湖南泰嘉新材料科技股份有限公司 | Band saw blade composite disc and processing method thereof |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2794458A (en) * | 1952-12-18 | 1957-06-04 | Cornelius D Dosker | High speed saw |
| US3048160A (en) * | 1960-09-26 | 1962-08-07 | Trurun Inc | Attachment of cutting elements to wear resistant blades |
| US3990338A (en) * | 1973-01-17 | 1976-11-09 | Gomex Verktyg Ab | Laminated saw blade |
| JPS59107860A (en) * | 1982-12-09 | 1984-06-22 | Toho Seimitsu Kk | Disk for diamond cutter and manufacturing method thereof |
| US6526959B1 (en) * | 1999-09-28 | 2003-03-04 | Ehwa Diamond Ind. Co., Ltd. | Adhesive sheet for noise and shock absorption, and saw blade making use of it, and manufacturing methods therefor |
| CN1605422A (en) * | 2003-10-08 | 2005-04-13 | 游芳春 | Diamond saw blade and its manufacturing method |
| CN1657257A (en) * | 2004-02-17 | 2005-08-24 | 河南黄河旋风股份有限公司 | Diamond saw bit and its manufacturing method |
| CN1798625A (en) * | 2003-08-11 | 2006-07-05 | 二和金刚石工业株式会社 | Diamond tool |
| CN202029248U (en) * | 2011-01-20 | 2011-11-09 | 广西大学 | Circular saw blade brazed with single layer interlaced arrangement diamond, for sawing crisp and hard material |
| CN202192331U (en) * | 2011-07-29 | 2012-04-18 | 天津市永鑫建材工具厂 | Noise reduction cutting blade |
| CN102990532A (en) * | 2011-09-07 | 2013-03-27 | 二和金刚石工业株式会社 | Brazing bond type diamond tool with excellent cuttability and method of manufacturing the same |
| CN203778882U (en) * | 2014-04-10 | 2014-08-20 | 江苏锋菱超硬工具有限公司 | Multifunctional soldering diamond saw blade |
| CN104275745A (en) * | 2013-07-11 | 2015-01-14 | 北京精准国汇技术有限公司 | Diamond composite circular saw blade |
| CN204449498U (en) * | 2015-02-16 | 2015-07-08 | 杭州博锋金刚石工具有限公司 | A kind of Novel saw blade |
-
2015
- 2015-02-16 CN CN201510083162.0A patent/CN104722843A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2794458A (en) * | 1952-12-18 | 1957-06-04 | Cornelius D Dosker | High speed saw |
| US3048160A (en) * | 1960-09-26 | 1962-08-07 | Trurun Inc | Attachment of cutting elements to wear resistant blades |
| US3990338A (en) * | 1973-01-17 | 1976-11-09 | Gomex Verktyg Ab | Laminated saw blade |
| JPS59107860A (en) * | 1982-12-09 | 1984-06-22 | Toho Seimitsu Kk | Disk for diamond cutter and manufacturing method thereof |
| US6526959B1 (en) * | 1999-09-28 | 2003-03-04 | Ehwa Diamond Ind. Co., Ltd. | Adhesive sheet for noise and shock absorption, and saw blade making use of it, and manufacturing methods therefor |
| CN1798625A (en) * | 2003-08-11 | 2006-07-05 | 二和金刚石工业株式会社 | Diamond tool |
| CN1605422A (en) * | 2003-10-08 | 2005-04-13 | 游芳春 | Diamond saw blade and its manufacturing method |
| CN1657257A (en) * | 2004-02-17 | 2005-08-24 | 河南黄河旋风股份有限公司 | Diamond saw bit and its manufacturing method |
| CN202029248U (en) * | 2011-01-20 | 2011-11-09 | 广西大学 | Circular saw blade brazed with single layer interlaced arrangement diamond, for sawing crisp and hard material |
| CN202192331U (en) * | 2011-07-29 | 2012-04-18 | 天津市永鑫建材工具厂 | Noise reduction cutting blade |
| CN102990532A (en) * | 2011-09-07 | 2013-03-27 | 二和金刚石工业株式会社 | Brazing bond type diamond tool with excellent cuttability and method of manufacturing the same |
| CN104275745A (en) * | 2013-07-11 | 2015-01-14 | 北京精准国汇技术有限公司 | Diamond composite circular saw blade |
| CN203778882U (en) * | 2014-04-10 | 2014-08-20 | 江苏锋菱超硬工具有限公司 | Multifunctional soldering diamond saw blade |
| CN204449498U (en) * | 2015-02-16 | 2015-07-08 | 杭州博锋金刚石工具有限公司 | A kind of Novel saw blade |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111330820A (en) * | 2020-03-10 | 2020-06-26 | 湖南泰嘉新材料科技股份有限公司 | Band saw blade composite disc and processing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106881671B (en) | Multilayer brazing diamond tool and preparation method thereof | |
| CN110370467B (en) | Laser welding sheet capable of reducing cutting resistance and preparation process thereof | |
| CN102380605B (en) | Preparation method of hard alloy/high-chromium alloy-based wear-resistant composite material | |
| CN103100834A (en) | Manufacturing method for hard alloy steel compound tool | |
| CN204449498U (en) | A kind of Novel saw blade | |
| CN102672144A (en) | Preparation method for tungsten carbide ceramic/heat-resisting alloy based heat-resisting and wear-resisting composite material | |
| CN104722843A (en) | Novel saw blade and manufacturing method thereof | |
| EP2879822B1 (en) | Method for producing a wear-resistant component | |
| CN107009103A (en) | A kind of production technology of sprocket wheel or ring gear | |
| CN102219023B (en) | Processing method of twisted guide rail | |
| CN202357296U (en) | Diamond hob with staggered teeth | |
| CN103600213A (en) | Method for manufacturing cutting edges of cutting boards of hot shearing machines for bars | |
| CN104551445B (en) | The block exothermic welding flux that a kind of high safety is easily ignited and briquetting technique thereof | |
| CN102297588A (en) | Composite insulating brick for kiln liner of rotary kiln and manufacturing method of brick | |
| CN211806863U (en) | Cutting tool for ceramic mud pieces | |
| CN105036710B (en) | A kind of preparation method containing the ceramic material reclaiming flyash | |
| EP3346167A1 (en) | High performance titanium connecting sealing ring for deep-sea oil drilling and production device and processing method | |
| CN210548181U (en) | Hard alloy coating edge shearing die cutter block | |
| CN103182743B (en) | A kind of Multi-layer diamond saw blade bit | |
| CN106345809B (en) | A kind of assembly method using vacuum complex technique production super-thick steel plate | |
| CN104043882B (en) | Boron carbide-zirconium boride-copper nickel electrode material and preparation method | |
| CN211104910U (en) | Improved stone chisel | |
| CN102658350B (en) | Forging process for slurry pump air chamber shell | |
| CN105970806A (en) | Auxiliary clamp for zincizing process for bridge support plates | |
| CN118513793A (en) | Technological method of laser sheet with circular holes in bottle groove |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Yinong town Xiaoshan Zhongli village in Hangzhou City, Zhejiang province 311247 Applicant after: Hangzhou Bofeng Diamond Tools Co., Ltd. Address before: 310052 Tang Jiajing, Changhe street, Hangzhou, Zhejiang, Binjiang District Applicant before: Hangzhou Bofeng Diamond Tools Co., Ltd. |
|
| COR | Change of bibliographic data | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150624 |