CN106346379A - Formula and machining method of resin grinding wheel angle abrasive disc - Google Patents
Formula and machining method of resin grinding wheel angle abrasive disc Download PDFInfo
- Publication number
- CN106346379A CN106346379A CN201611043026.XA CN201611043026A CN106346379A CN 106346379 A CN106346379 A CN 106346379A CN 201611043026 A CN201611043026 A CN 201611043026A CN 106346379 A CN106346379 A CN 106346379A
- Authority
- CN
- China
- Prior art keywords
- layer
- mesh
- coarse fodder
- fines
- abrasive disc
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
- B24D7/18—Wheels of special form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/0009—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
- B24D3/28—Resins or natural or synthetic macromolecular compounds
- B24D3/285—Reaction products obtained from aldehydes or ketones
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a formula of a resin grinding wheel angle abrasive disc. The resin grinding wheel angle abrasive disc comprises a coarse material layer, another coarse material layer and a fine material layer which are composited in sequence. Raw materials of the coarse material layers include SG adhesive materials, AZ40 fused alumina zirconia, white corundum, liquid phenolic resin, liquid epoxy resin, 325-400-mesh powdery phenolic resin, 400-600-mesh potassium fluoborate, 600-800-mesh electrolytic copper powder and 600-800-mesh talcum powder. Raw materials of the fine material layer include brown fused alumina, white corundum, liquid phenolic resin, liquid epoxy resin, 325-400-mesh powdery phenolic resin, 400-600-mesh potassium fluoborate and 600-800-mesh talcum powder. The made resin grinding wheel angle abrasive disc is good in hand feeling, free of edge breakage, large in grinding removal quantity, high in grinding efficiency and adaptability and capable of meeting the requirements for rapid coping of tracks and weld joints, and machined workpieces are high in surface precision.
Description
Technical field
The present invention relates to metal removal instrument product technique field, specifically a kind of formula of resin wheel angle abrasive disc and its
Processing method.
Background technology
Resin wheel angle abrasive disc because having the characteristics such as good intensity, toughness, self-sharpening, high grinding removal amount, therefore extensively
General for casting, the reconditioning in the field such as ship, track, automobile, building materials processing.In recent years, along with China Express Railway cause
With the high speed development of shipbuilding industry, the requirement cumulative year after year to high efficiency and high accuracy resin wheel angle abrasive disc, and current state
The grinding efficiency producing angle abrasive disc is generally relatively low, and grinding removal amount is little, and chipping phenomenon is commonplace, and grinding feel is poor, processed work
The surface accuracy of part is not high.How to improve grinding efficiency, quick reconditioning Rail joint and weld seam, improve the surface of workpiece to be machined
Precision, becoming resin wheel industry needs the urgent technical barrier broken through.
Content of the invention
It is an object of the invention to provide a kind of formula of resin wheel angle abrasive disc and its processing method, to solve the above-mentioned back of the body
The problem proposing in scape technology.
For achieving the above object, the following technical scheme of present invention offer:
A kind of formula of resin wheel angle abrasive disc, including three layers of coarse fodder layer being combined successively, coarse fodder layer and fines layer,
The raw material of coarse fodder layer group by weight is divided into: sg abrasive material 40-60 part, az40 fused alumina zirconia 20-40 part, white fused alumina 20-40
Part, liquid phenolic resin 3-6 part, liquid epoxies 0.75-1.5 part, powdered phenol-formaldehyde resin 15-20 part of 325-400 mesh,
Potassium borofluoride 2-8 part of 400-600 mesh, electrolytic copper powder 0.5-2 part of 600-800 mesh, Pulvis Talci 0.5-2 part of 600-800 mesh；
The raw material of fines layer group by weight is divided into: Brown Alundum 20-50 part, white fused alumina 50-80 part, liquid phenolic resin 2.4-
5 parts, liquid epoxies 0.6-1.25 part, powdered phenol-formaldehyde resin 16-22 part of 325-400 mesh, the Potassium borofluoride of 400-600 mesh
2-4 part, Pulvis Talci 0.5-2 part of 600-800 mesh.
As the further scheme of the present invention: in the raw material of described coarse fodder layer and fines layer, the viscosity of liquid phenolic resin is
500-800mpa·s(25℃).
As the further scheme of the present invention: the addition of liquid epoxies in the raw material of described coarse fodder layer and fines layer
Amount, by liquid phenolic resin: liquid epoxies=4:1 keeps constant.
As the further scheme of the present invention: sg abrasive material, az40 fused alumina zirconia, three kinds of white fused alumina in the raw material of described coarse fodder layer
Abrasive material is the same grain size number between 24 mesh -46 mesh, and 100 parts of the total number holding of three kinds of abrasive materials is constant.
As the further scheme of the present invention: Brown Alundum in the raw material of described fines layer, two kinds of abrasive materials of white fused alumina be 60 mesh-
Same grain size number between 80 mesh, and 100 parts of the total number holding of two kinds of abrasive materials is constant.
As the further scheme of the present invention: the processing method of described resin wheel angle abrasive disc, it specifically comprises the following steps that
(1) respectively by described coarse fodder layer and fines layer each component dispensing by weight ratio；
(2) by liquid phenolic resin and liquid epoxies in the ratio mixing and stirring of 4:1, epoxide modified phenolic aldehyde tree is obtained
Fat mixing liquid；
(3) powdered phenol-formaldehyde resin in coarse fodder layer formula, Potassium borofluoride, electrolytic copper powder, Pulvis Talci are put in pre- powder equipment and mixed
Close uniformly, the prefabricated powder of prepared coarse fodder layer；Powdered phenol-formaldehyde resin in described fines layer formula, Potassium borofluoride, Pulvis Talci are put into
Mix homogeneously in pre- powder equipment, the prefabricated powder of prepared fines layer；
(4) sg abrasive material, az40 fused alumina zirconia, white fused alumina in coarse fodder layer formula are put into and mixed all in pot on double pot adverse current batch mixing pots
Even, it is subsequently adding the mixing liquid that step (2) is obtained, and stir, prepared coarse fodder layer damp sand；By in described fines layer formula
Mix homogeneously in pot on double pot adverse current batch mixing pots put into by Brown Alundum, white fused alumina, is subsequently adding the mixing liquid that step (2) is obtained,
And stir, prepared fines layer damp sand；
(5) in the prefabricated powder of coarse fodder layer that step (3) is obtained being added double pot adverse current batch mixing pots to cook and prepared with step (4)
Coarse fodder layer damp sand quickly stir, prepared coarse fodder layer compound；The prefabricated powder of fines layer that step (3) is obtained adds double pots
During adverse current batch mixing pot is cooked, and quickly stir with prepared fines layer damp sand in step (4), prepared fines layer compound；
(6) the coarse fodder layer compound that step (5) is obtained is parked more than 24 hours under the conditions of being positioned over constant temperature and humidity, little every 12
When cross 14-22 eye mesh screen once, obtain the coarse fodder formable layer material of uniform loose；The fines layer compound that (5) are obtained is positioned over
Park under the conditions of constant temperature and humidity more than 24 hours, crossed 25-36 eye mesh screen once every 8 hours, obtain the fines layer of uniform loose
Molding mass；
(7) it is pressed into the warm-pressing technology molding of cymbal shape and secondary compacting using dividing material；
(8) the angle abrasive disc semi-finished product aluminum backing plate of forming is separated, wear axle spring pressurization hardening, highest hardening temperature 155-
175 degrees Celsius, highest temperature temperature retention time 3-6 hour, total firm time 14-22 hour, being then slowly cooled to room temperature unloading piece is
Obtain angle abrasive disc finished product.
As the further scheme of the present invention: the moulding process in described step (7) is: adds mould temperature first
Heat is to 60-80 DEG C, and keeps constant temperature；On mould cymbal shape concave surface baffle plate along die mandrel be sequentially placed into orifice ring, trade mark, first
Open 60-190 gram of glass fiber reinforcement mesh sheet of 8-14 mesh and flatten；Throw fines formable layer material by angle plate design inventory and scrape
Flat；Place into 190-330 gram of glass fiber reinforcement mesh sheet of second 5-8 mesh and flatten；Between making a basket by angle plate design inventory
Coarse fodder formable layer material simultaneously strikes off；Place into 190-330 gram of glass fiber reinforcement mesh sheet of the 3rd 5-8 mesh and flatten；By angle abrasive disc
Design inventory is thrown grinding surface coarse fodder formable layer material and is struck off；Cover cymbal shape die cover plate；Then 60 tons of press 10mpa pressure are crossed
Under the conditions of the pressurize 2-3 second, pre-molding, flat shape stand material base substrate be pressed into as cymbal shape angle abrasive disc blank；Whole set of die is passed through
After 180 ° of upsets under 80 tons of press 10mpa pressure conditions the pressurize 3-4 second, compressing, cymbal shape angle abrasive disc blank is through two
Secondary it is suppressed into the consistent cymbal shape angle abrasive disc semi-finished product of levels even density.
The advantage of described formula:
(1) sg abrasive material high, the good toughness that has hardness, the advantages of sharpness is strong, compared with common corundum abrasive material, sg has wear resistance ratio
Height, surface of the work crudy is good, and crushing amount is few, and grinding efficiency is high.
(2) az40 fused alumina zirconia has higher toughness and hardness, and grinding efficiency and durability greatly improve.
(3) white fused alumina, as fragility abrasive material, has good self-sharpening, can effectively slow down abrasive grain and be ground work
Cushion effect between part, plays the effect improving grinding comfort level and lifting grinding efficiency.
(4) introducing of liquid epoxies, can improve the elevated temperature strength of phenolic resin, improve the overall bonding of angle abrasive disc
Performance and thermostability.
(5) Potassium borofluoride adds with lubriation material as fluxing, and is effectively improved the comfortableness of grinding feel.
(6) electrolytic copper powder has the effect improving angle abrasive disc heat conduction, radiating and lubrication, makes grinding operation more laborsaving.
(7) Pulvis Talci has preferable lubricity, improves the comfort level of grinding.
(8) thickness bi-layer formulations, coarse fodder layer elder generation and absorption surface during grinding, play main ablation, meet big removal
The high efficient grinding of amount needs, and fines layer, as assistant grinding layer, reaches the purpose improving surface of the work precision.
(9) thickness bed of material formula all only with same grain size number abrasive material so that angle abrasive disc interior porosity improves, and pore
Distribution uniform in size, angle abrasive disc sharpness significantly improves.
The advantage of described manufacture method is:
(1) in advance liquid phenolic resin and liquid epoxies in the ratio dispensing of 4:1 mixing and stirring, be in order to mixed
During material, compound state is easier to control, and reduces the generation of dough, increases mixture uniformity.
(2) in advance all to powdered phenol-formaldehyde resin, Potassium borofluoride, Pulvis Talci etc. powder body materials are put into mixing in pre- powder equipment
Uniformly, enable all powder body more uniformly be overlayed on the surface of damp sand by suction, improve the uniformity of compound.
(3) coarse fodder layer compound is parked under the conditions of being positioned over constant temperature and humidity more than 24 hours, crosses 14-22 mesh every 12 hours
Screen cloth once, effective guarantee coarse fodder layer compound state can reach loose uniform, the stable purpose of bulk density；Fines layer mixes
Material be positioned over constant temperature and humidity under the conditions of park more than 24 hours, every 8 cross 25-36 eye mesh screen once every hour, can effective guarantee thin
Bed of material compound state reaches loose uniform, the stable purpose of bulk density.Fines layer compound mistake more than coarse fodder layer compound
Sieve once, is because fines is more easy to adhesion and conglomeration than coarse fodder.
(4) it is pressed into the warm-pressing technology molding of cymbal shape and secondary compacting using dividing material.Divide and expect into cymbal shape technique, because of flat shape
Scraper spreads out expects more to ensure angle abrasive disc inside and outside structural homogenity than traditional cymbal shape scraper stand material, and divides material scraper easily tune
Section and control, percent defective is lower；And divide material technique premise be have on mould cymbal shape concave surface baffle plate the orifice ring flattening in advance,
Trade mark, first enhancing mesh sheet, as supporting and isolating, ensure that molding mass does not drain to trade mark face.The warm-pressing technology of secondary compacting becomes
Type, is because secondary compacting more can the uniformity of effective guarantee angle abrasive disc thickness bed of material tissue and density one than traditional once compacting
Cause property, block is not fallen in grinding hour angle abrasive disc not chipping.
(5) select spring pressurization hardening, in addition to can be with the thickness of effective control angle abrasive disc, can also compensate for angle abrasive disc thickness material
The structural homogenity of layer, lifting angle abrasive disc global density concordance.
(6) highest hardening temperature 155-175 degree, highest temperature temperature retention time 3-5 hour are selected, total firm time 14-22 is little
When hardening process, be the decision design for ensureing the high grinding efficiency of angle abrasive disc.
Compared with prior art, the invention has the beneficial effects as follows:
Angle abrasive disc grinding good hand touch obtained by the present invention, not chipping, grinding removal amount is big, and grinding efficiency is high, and strong adaptability can
Meet the quick reconditioning processing to track and weld seam, workpiece to be machined surface accuracy is high.
Brief description
Fig. 1 is the structural representation of resin wheel angle abrasive disc.
In figure: 1, coarse fodder layer；2nd, coarse fodder layer；3rd, fines layer；4th, orifice ring；5th, trade mark；6th, first throw the net piece；7th, second throw the net
Piece；8th, the 3rd throw the net piece.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
Embodiment 1
Refer to Fig. 1, in the embodiment of the present invention, a kind of formula of resin wheel angle abrasive disc, including three layers of coarse fodder being combined successively
Layer 1, coarse fodder layer 2 and fines layer 3,
The raw material of coarse fodder layer group by weight is divided into: 40 parts of sg abrasive material, 30 parts of az40 fused alumina zirconia, 30 parts of white fused alumina, liquified phenol
3 parts of urea formaldehyde, 0.75 part of liquid epoxies, 15 parts of the powdered phenol-formaldehyde resin of 325 mesh, 2 parts of the Potassium borofluoride of 400 mesh, 600 mesh
2 parts of electrolytic copper powder, 0.5 part of the Pulvis Talci of 600 mesh；
Wherein, in the raw material of coarse fodder layer, the viscosity of liquid phenolic resin is 500mpa s (25 DEG C), described sg abrasive material, az40 zirconium
Corundum, the grain size number of three kinds of abrasive materials of white fused alumina are 24 mesh, and the total number of three kinds of abrasive materials keeps 100 parts of constant, described liquid
The addition of epoxy resin, by liquid phenolic resin: liquid epoxies=4:1 keeps constant；
The raw material of fines layer group by weight is divided into: 30 parts of Brown Alundum, 70 parts of white fused alumina, 2.4 parts of liquid phenolic resin, liquid
0.6 part of epoxy resin, 16 parts of the powdered phenol-formaldehyde resin of 325 mesh, 2 parts of the Potassium borofluoride of 400 mesh, 0.5 part of the Pulvis Talci of 600 mesh；
In the raw material of described fines layer, the viscosity of liquid phenolic resin is 500mpa s (25 DEG C), Brown Alundum, two kinds of mills of white fused alumina
The grain size number of material is 60 mesh, and 100 parts of the total number holding of two kinds of abrasive materials is constant, and the addition of described liquid epoxies is pressed
Liquid phenolic resin: liquid epoxies=4:1 keeps constant.
The processing method of the formula of described resin wheel angle abrasive disc, it specifically comprises the following steps that
(1) respectively by described coarse fodder layer and fines layer each component dispensing by weight ratio；
(2) by liquid phenolic resin and liquid epoxies in the ratio mixing and stirring of 4:1, epoxide modified phenolic aldehyde tree is obtained
Fat mixing liquid；
(3) powdered phenol-formaldehyde resin in coarse fodder layer formula, Potassium borofluoride, electrolytic copper powder, Pulvis Talci are put in pre- powder equipment and mixed
Close uniformly, the prefabricated powder of prepared coarse fodder layer；Powdered phenol-formaldehyde resin in described fines layer formula, Potassium borofluoride, Pulvis Talci are put into
Mix homogeneously in pre- powder equipment, the prefabricated powder of prepared fines layer；
(4) sg abrasive material, az40 fused alumina zirconia, white fused alumina in coarse fodder layer formula are put into and mixed all in pot on double pot adverse current batch mixing pots
Even, it is subsequently adding the mixing liquid that step (2) is obtained, and stir, prepared coarse fodder layer damp sand；By in described fines layer formula
Mix homogeneously in pot on double pot adverse current batch mixing pots put into by Brown Alundum, white fused alumina, is subsequently adding the mixing liquid that step (2) is obtained,
And stir, prepared fines layer damp sand；
(5) in the prefabricated powder of coarse fodder layer that step (3) is obtained being added double pot adverse current batch mixing pots to cook and prepared with step (4)
Coarse fodder layer damp sand quickly stir, prepared coarse fodder layer compound；The prefabricated powder of fines layer that step (3) is obtained adds double pots
During adverse current batch mixing pot is cooked, and quickly stir with prepared fines layer damp sand in step (4), prepared fines layer compound；
(6) the coarse fodder layer compound that step (5) is obtained is parked more than 24 hours under the conditions of being positioned over constant temperature and humidity, little every 12
When cross 14 eye mesh screens once, obtain the coarse fodder formable layer material of uniform loose；The fines layer compound that (5) are obtained is positioned over constant temperature
Park under the conditions of constant humidity more than 24 hours, crossed 25 eye mesh screens once every 8 hours, obtain the fines formable layer material of uniform loose；
(7) using dividing the warm-pressing technology molding expecting to be pressed into cymbal shape and secondary compacting, moulding process is explained in detail: first by mould
Temperature is heated to 60 DEG C, and keeps constant temperature；On mould cymbal shape concave surface baffle plate along die mandrel be sequentially placed into orifice ring, trade mark,
190 grams of glass fiber reinforcement mesh sheet of first 8 mesh simultaneously flatten；Throw fines formable layer material by angle plate design inventory and strike off；
Place into 330 grams of glass fiber reinforcement mesh sheet of second 5 mesh and flatten；Made a basket a coarse fodder formable layer by angle plate design inventory
Expect and strike off；Place into 330 grams of glass fiber reinforcement mesh sheet of the 3rd 5 mesh and flatten；Throw grinding by angle plate design inventory
Face coarse fodder formable layer material simultaneously strikes off；Cover cymbal shape die cover plate；Then pressurize 2 seconds under 60 tons of press 10mpa pressure conditions are crossed, in advance
Molded, the base substrate of flat shape stand material is pressed into as cymbal shape angle abrasive disc blank；Whole set of die is pressed after 80 tons after 180 ° of upsets
Under machine 10mpa pressure condition, pressurize 3 seconds, compressing, and to be suppressed into levels density equal through secondary for cymbal shape angle abrasive disc blank
Even consistent cymbal shape angle abrasive disc semi-finished product；
(8) the angle abrasive disc semi-finished product aluminum backing plate of forming is separated, wear axle spring pressurization hardening, highest hardening temperature 175
Degree Celsius, highest temperature temperature retention time 3 hours, total firm time 14 hours, then it is slowly cooled to room temperature unloading piece and obtain angle mill
Piece finished product.
Embodiment 2
Refer to Fig. 1, in the embodiment of the present invention, a kind of formula of resin wheel angle abrasive disc, including three layers of coarse fodder being combined successively
Layer 1, coarse fodder layer 2 and fines layer 3,
The raw material of coarse fodder layer group by weight is divided into: 50 parts of sg abrasive material, 25 parts of az40 fused alumina zirconia, 25 parts of white fused alumina, liquified phenol
4.8 parts of urea formaldehyde, 1.2 parts of liquid epoxies, 17.2 parts of the powdered phenol-formaldehyde resin of 325 mesh, 5 parts of the Potassium borofluoride of 500 mesh,
1 part of the electrolytic copper powder of 800 mesh, 1 part of the Pulvis Talci of 800 mesh；
Wherein, in the raw material of coarse fodder layer liquid phenolic resin viscosity be 650mpa s (25 DEG C), sg abrasive material, az40 fused alumina zirconia,
The grain size number of three kinds of abrasive materials of white fused alumina is 36 mesh, and the total number of three kinds of abrasive materials keeps 100 parts of constant, described Breakup of Liquid Ring oxygen trees
The addition of fat, by liquid phenolic resin: liquid epoxies=4:1 keeps constant；
The raw material of fines layer group by weight is divided into: 35 parts of Brown Alundum, 65 parts of white fused alumina, 3.6 parts of liquid phenolic resin, liquid
0.9 part of epoxy resin, 19.4 parts of the powdered phenol-formaldehyde resin of 325 mesh, 3 parts of the Potassium borofluoride of 500 mesh, 1 part of the Pulvis Talci of 800 mesh；
In the raw material of described fines layer, the viscosity of liquid phenolic resin is 650mpa s (25 DEG C), Brown Alundum, two kinds of mills of white fused alumina
The grain size number of material is 70 mesh, and 100 parts of the total number holding of two kinds of abrasive materials is constant, and the addition of described liquid epoxies is pressed
Liquid phenolic resin: liquid epoxies=4:1 keeps constant.
The processing method of the formula of described resin wheel angle abrasive disc, it specifically comprises the following steps that
(1) respectively by described coarse fodder layer and fines layer each component dispensing by weight ratio；
(2) by liquid phenolic resin and liquid epoxies in the ratio mixing and stirring of 4:1, epoxide modified phenolic aldehyde tree is obtained
Fat mixing liquid；
(3) powdered phenol-formaldehyde resin in coarse fodder layer formula, Potassium borofluoride, electrolytic copper powder, Pulvis Talci are put in pre- powder equipment and mixed
Close uniformly, the prefabricated powder of prepared coarse fodder layer；Powdered phenol-formaldehyde resin in described fines layer formula, Potassium borofluoride, Pulvis Talci are put into
Mix homogeneously in pre- powder equipment, the prefabricated powder of prepared fines layer；
(4) sg abrasive material, az40 fused alumina zirconia, white fused alumina in coarse fodder layer formula are put into and mixed all in pot on double pot adverse current batch mixing pots
Even, it is subsequently adding the mixing liquid that step (2) is obtained, and stir, prepared coarse fodder layer damp sand；By in described fines layer formula
Mix homogeneously in pot on double pot adverse current batch mixing pots put into by Brown Alundum, white fused alumina, is subsequently adding the mixing liquid that step (2) is obtained,
And stir, prepared fines layer damp sand；
(5) in the prefabricated powder of coarse fodder layer that step (3) is obtained being added double pot adverse current batch mixing pots to cook and prepared with step (4)
Coarse fodder layer damp sand quickly stir, prepared coarse fodder layer compound；The prefabricated powder of fines layer that step (3) is obtained adds double pots
During adverse current batch mixing pot is cooked, and quickly stir with prepared fines layer damp sand in step (4), prepared fines layer compound；
(6) the coarse fodder layer compound that step (5) is obtained is parked more than 24 hours under the conditions of being positioned over constant temperature and humidity, little every 12
When cross 16 eye mesh screens once, obtain the coarse fodder formable layer material of uniform loose；The fines layer compound that (5) are obtained is positioned over constant temperature
Park under the conditions of constant humidity more than 24 hours, crossed 30 eye mesh screens once every 8 hours, obtain the fines formable layer material of uniform loose；
(7) using dividing the warm-pressing technology molding expecting to be pressed into cymbal shape and secondary compacting, moulding process is explained in detail: first by mould
Temperature is heated to 70 DEG C, and keeps constant temperature；On mould cymbal shape concave surface baffle plate along die mandrel be sequentially placed into orifice ring, trade mark,
100 grams of glass fiber reinforcement mesh sheet of first 10 mesh simultaneously flatten；Throw fines formable layer material by angle plate design inventory and strike off；
Place into 190 grams of glass fiber reinforcement mesh sheet of second 6 mesh and flatten；Made a basket a coarse fodder formable layer by angle plate design inventory
Expect and strike off；Place into 190 grams of glass fiber reinforcement mesh sheet of the 3rd 6 mesh and flatten；Throw grinding by angle plate design inventory
Face coarse fodder formable layer material simultaneously strikes off；Cover cymbal shape die cover plate；Then pressurize 2.5 seconds under 60 tons of press 10mpa pressure conditions are crossed,
Pre-molding, the base substrate of flat shape stand material is pressed into as cymbal shape angle abrasive disc blank；Whole set of die is after 180 ° of upsets after 80 tons
Under press 10mpa pressure condition, pressurize 3.5 seconds, compressing, and to be suppressed into levels close through secondary for cymbal shape angle abrasive disc blank
The cymbal shape angle abrasive disc semi-finished product of degree uniformity；
(8) the angle abrasive disc semi-finished product aluminum backing plate of forming is separated, wear axle spring pressurization hardening, highest hardening temperature 165
Degree Celsius, highest temperature temperature retention time 4.5 hours, total firm time 18.5 hours, then it is slowly cooled to room temperature unloading piece and obtain
Angle abrasive disc finished product.
Embodiment 3
Refer to Fig. 1, in the embodiment of the present invention, a kind of formula of resin wheel angle abrasive disc, including three layers of coarse fodder being combined successively
Layer 1, coarse fodder layer 2 and fines layer 3,
The raw material of coarse fodder layer group by weight is divided into: 60 parts of sg abrasive material, 20 parts of az40 fused alumina zirconia, 20 parts of white fused alumina, liquified phenol
6 parts of urea formaldehyde, 1.5 parts of liquid epoxies, 20 parts of the powdered phenol-formaldehyde resin of 400 mesh, 8 parts of the Potassium borofluoride of 600 mesh, 800 mesh
0.5 part of electrolytic copper powder, 2 parts of the Pulvis Talci of 800 mesh；
Wherein, in the raw material of coarse fodder layer liquid phenolic resin viscosity be 800mpa s (25 DEG C), sg abrasive material, az40 fused alumina zirconia,
The grain size number of three kinds of abrasive materials of white fused alumina is 46 mesh, and the total number of three kinds of abrasive materials keeps 100 parts of constant, described Breakup of Liquid Ring oxygen trees
The addition of fat, by liquid phenolic resin: liquid epoxies=4:1 keeps constant；
The raw material of fines layer group by weight is divided into: 50 parts of Brown Alundum, 50 parts of white fused alumina, 5 parts of liquid phenolic resin, Breakup of Liquid Ring
1.25 parts of oxygen tree fat, 22 parts of the powdered phenol-formaldehyde resin of 400 mesh, 4 parts of the Potassium borofluoride of 600 mesh, 2 parts of the Pulvis Talci of 800 mesh；
In the raw material of described fines layer, the viscosity of liquid phenolic resin is 800mpa s (25 DEG C), Brown Alundum, two kinds of mills of white fused alumina
The grain size number of material is 80 mesh, and 100 parts of the total number holding of two kinds of abrasive materials is constant, and the addition of described liquid epoxies is pressed
Liquid phenolic resin: liquid epoxies=4:1 keeps constant.
The processing method of the formula of described resin wheel angle abrasive disc, it specifically comprises the following steps that
(1) respectively by described coarse fodder layer and fines layer each component dispensing by weight ratio；
(2) by liquid phenolic resin and liquid epoxies in the ratio mixing and stirring of 4:1, epoxide modified phenolic aldehyde tree is obtained
Fat mixing liquid；
(3) powdered phenol-formaldehyde resin in coarse fodder layer formula, Potassium borofluoride, electrolytic copper powder, Pulvis Talci are put in pre- powder equipment and mixed
Close uniformly, the prefabricated powder of prepared coarse fodder layer；Powdered phenol-formaldehyde resin in described fines layer formula, Potassium borofluoride, Pulvis Talci are put into
Mix homogeneously in pre- powder equipment, the prefabricated powder of prepared fines layer；
(4) sg abrasive material, az40 fused alumina zirconia, white fused alumina in coarse fodder layer formula are put into and mixed all in pot on double pot adverse current batch mixing pots
Even, it is subsequently adding the mixing liquid that step (2) is obtained, and stir, prepared coarse fodder layer damp sand；By in described fines layer formula
Mix homogeneously in pot on double pot adverse current batch mixing pots put into by Brown Alundum, white fused alumina, is subsequently adding the mixing liquid that step (2) is obtained,
And stir, prepared fines layer damp sand；
(5) in the prefabricated powder of coarse fodder layer that step (3) is obtained being added double pot adverse current batch mixing pots to cook and prepared with step (4)
Coarse fodder layer damp sand quickly stir, prepared coarse fodder layer compound；The prefabricated powder of fines layer that step (3) is obtained adds double pots
During adverse current batch mixing pot is cooked, and quickly stir with prepared fines layer damp sand in step (4), prepared fines layer compound；
(6) the coarse fodder layer compound that step (5) is obtained is parked more than 24 hours under the conditions of being positioned over constant temperature and humidity, little every 12
When cross 22 eye mesh screens once, obtain the coarse fodder formable layer material of uniform loose；The fines layer compound that (5) are obtained is positioned over constant temperature
Park under the conditions of constant humidity more than 24 hours, crossed 36 eye mesh screens once every 8 hours, obtain the fines formable layer material of uniform loose；
(7) using dividing the warm-pressing technology molding expecting to be pressed into cymbal shape and secondary compacting, moulding process is explained in detail: first by mould
Temperature is heated to 80 DEG C, and keeps constant temperature；On mould cymbal shape concave surface baffle plate along die mandrel be sequentially placed into orifice ring, trade mark,
60 grams of glass fiber reinforcement mesh sheet of first 14 mesh simultaneously flatten；Throw fines formable layer material by angle plate design inventory and strike off；
Place into 260 grams of glass fiber reinforcement mesh sheet of second 8 mesh and flatten；Made a basket a coarse fodder formable layer by angle plate design inventory
Expect and strike off；Place into 260 grams of glass fiber reinforcement mesh sheet of the 3rd 8 mesh and flatten；Throw grinding by angle plate design inventory
Face coarse fodder formable layer material simultaneously strikes off；Cover cymbal shape die cover plate；Then pressurize 3 seconds under 60 tons of press 10mpa pressure conditions are crossed, in advance
Molded, the base substrate of flat shape stand material is pressed into as cymbal shape angle abrasive disc blank；Whole set of die is pressed after 80 tons after 180 ° of upsets
Under machine 10mpa pressure condition, pressurize 4 seconds, compressing, and to be suppressed into levels density equal through secondary for cymbal shape angle abrasive disc blank
Even consistent cymbal shape angle abrasive disc semi-finished product；
(8) the angle abrasive disc semi-finished product aluminum backing plate of forming is separated, wear axle spring pressurization hardening, highest hardening temperature 155
Degree Celsius, highest temperature temperature retention time 6 hours, total firm time 22 hours, then it is slowly cooled to room temperature unloading piece and obtain angle mill
Piece finished product.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of the spirit or essential attributes of the present invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as limiting involved claim.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, not each embodiment only wraps
Containing an independent technical scheme, only for clarity, those skilled in the art should for this narrating mode of description
Using description as an entirety, the technical scheme in each embodiment can also form those skilled in the art through appropriately combined
Understandable other embodiment.
Claims (7)
1. the formula of a kind of resin wheel angle abrasive disc, including three layers of coarse fodder layer being combined successively, coarse fodder layer and fines layer, its feature
It is,
The raw material of coarse fodder layer group by weight is divided into: sg abrasive material 40-60 part, az40 fused alumina zirconia 20-40 part, white fused alumina 20-40
Part, liquid phenolic resin 3-6 part, liquid epoxies 0.75-1.5 part, powdered phenol-formaldehyde resin 15-20 part of 325-400 mesh,
Potassium borofluoride 2-8 part of 400-600 mesh, electrolytic copper powder 0.5-2 part of 600-800 mesh, Pulvis Talci 0.5-2 part of 600-800 mesh；
The raw material of fines layer group by weight is divided into: Brown Alundum 20-50 part, white fused alumina 50-80 part, liquid phenolic resin 2.4-
5 parts, liquid epoxies 0.6-1.25 part, powdered phenol-formaldehyde resin 16-22 part of 325-400 mesh, the Potassium borofluoride of 400-600 mesh
2-4 part, Pulvis Talci 0.5-2 part of 600-800 mesh.
2. a kind of formula of resin wheel angle according to claim 1 abrasive disc is it is characterised in that described coarse fodder layer and fines
In the raw material of layer, the viscosity of liquid phenolic resin is 500-800mpa s (25 DEG C).
3. a kind of formula of resin wheel angle according to claim 1 abrasive disc is it is characterised in that described coarse fodder layer and fines
The addition of liquid epoxies in the raw material of layer, by liquid phenolic resin: liquid epoxies=4:1 keeps constant.
4. a kind of formula of resin wheel angle according to claim 1 abrasive disc is it is characterised in that the raw material of described coarse fodder layer
Middle sg abrasive material, az40 fused alumina zirconia, three kinds of abrasive materials of white fused alumina are the same grain size number between 24 mesh -46 mesh, and three kinds of abrasive materials is total
100 parts of number holding is constant.
5. a kind of formula of resin wheel angle according to claim 1 abrasive disc is it is characterised in that the raw material of described fines layer
Middle Brown Alundum, two kinds of abrasive materials of white fused alumina are the same grain size number between 60 mesh -80 mesh, and the total number of two kinds of abrasive materials keeps 100
Part is constant.
6. a kind of preparation method of the formula of resin wheel angle as claimed in claim 1 abrasive disc is it is characterised in that it specifically walks
Suddenly as follows:
(1) respectively by described coarse fodder layer and fines layer each component dispensing by weight ratio；
(2) by liquid phenolic resin and liquid epoxies in the ratio mixing and stirring of 4:1, epoxide modified phenolic aldehyde tree is obtained
Fat mixing liquid；
(3) powdered phenol-formaldehyde resin in coarse fodder layer formula, Potassium borofluoride, electrolytic copper powder, Pulvis Talci are put in pre- powder equipment and mixed
Close uniformly, the prefabricated powder of prepared coarse fodder layer；Powdered phenol-formaldehyde resin in described fines layer formula, Potassium borofluoride, Pulvis Talci are put into
Mix homogeneously in pre- powder equipment, the prefabricated powder of prepared fines layer；
(4) sg abrasive material, az40 fused alumina zirconia, white fused alumina in coarse fodder layer formula are put into and mixed all in pot on double pot adverse current batch mixing pots
Even, it is subsequently adding the mixing liquid that step (2) is obtained, and stir, prepared coarse fodder layer damp sand；By in described fines layer formula
Mix homogeneously in pot on double pot adverse current batch mixing pots put into by Brown Alundum, white fused alumina, is subsequently adding the mixing liquid that step (2) is obtained,
And stir, prepared fines layer damp sand；
(5) in the prefabricated powder of coarse fodder layer that step (3) is obtained being added double pot adverse current batch mixing pots to cook and prepared with step (4)
Coarse fodder layer damp sand quickly stir, prepared coarse fodder layer compound；The prefabricated powder of fines layer that step (3) is obtained adds double pots
During adverse current batch mixing pot is cooked, and quickly stir with prepared fines layer damp sand in step (4), prepared fines layer compound；
(6) the coarse fodder layer compound that step (5) is obtained is parked more than 24 hours under the conditions of being positioned over constant temperature and humidity, little every 12
When cross 14-22 eye mesh screen once, obtain the coarse fodder formable layer material of uniform loose；The fines layer compound that (5) are obtained is positioned over
Park under the conditions of constant temperature and humidity more than 24 hours, crossed 25-36 eye mesh screen once every 8 hours, obtain the fines layer of uniform loose
Molding mass；
(7) it is pressed into the warm-pressing technology molding of cymbal shape and secondary compacting using dividing material；
(8) the angle abrasive disc semi-finished product aluminum backing plate of forming is separated, wear axle spring pressurization hardening, highest hardening temperature 155-
175 degrees Celsius, highest temperature temperature retention time 3-6 hour, total firm time 14-22 hour, being then slowly cooled to room temperature unloading piece is
Obtain angle abrasive disc finished product.
7. a kind of preparation method of the formula of resin wheel angle according to claim 6 abrasive disc is it is characterised in that described step
Suddenly the moulding process in (7) is: first mould temperature is heated to 60-80 DEG C, and keeps constant temperature；In mould cymbal shape concave surface
It is sequentially placed into orifice ring, trade mark, 60-190 gram of glass fiber reinforcement mesh sheet of first 8-14 mesh along die mandrel on baffle plate and press
Flat；Throw fines formable layer material by angle plate design inventory and strike off；Place into 190-330 gram of glass fibre of second 5-8 mesh
Strengthen mesh sheet and flatten；Made a basket a coarse fodder formable layer material by angle plate design inventory and struck off；Place into the 3rd 5-8 mesh
190-330 gram of glass fiber reinforcement mesh sheet simultaneously flattens；Throw grinding surface coarse fodder formable layer material by angle plate design inventory and strike off；
Cover cymbal shape die cover plate；Then spend the pressurize 2-3 second under 60 tons of press 10mpa pressure conditions, pre-molding, the base of flat shape stand material
Body is pressed into as cymbal shape angle abrasive disc blank；Whole set of die is protected after 180 ° of upsets under 80 tons of press 10mpa pressure conditions
The pressure 3-4 second, compressing, cymbal shape angle abrasive disc blank is suppressed into the consistent cymbal shape angle abrasive disc of levels even density through secondary
Semi-finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611043026.XA CN106346379B (en) | 2016-11-24 | 2016-11-24 | A kind of formula and its processing method of the grinding of resin wheel angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611043026.XA CN106346379B (en) | 2016-11-24 | 2016-11-24 | A kind of formula and its processing method of the grinding of resin wheel angle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106346379A true CN106346379A (en) | 2017-01-25 |
| CN106346379B CN106346379B (en) | 2018-11-06 |
Family
ID=57862946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611043026.XA Active CN106346379B (en) | 2016-11-24 | 2016-11-24 | A kind of formula and its processing method of the grinding of resin wheel angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106346379B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109015423A (en) * | 2018-08-30 | 2018-12-18 | 珠海大象磨料磨具有限公司 | A kind of grinding wheel and preparation method thereof for lightweighting materials processing |
| CN109290964A (en) * | 2018-11-05 | 2019-02-01 | 深圳市汉通实业有限公司 | A kind of high efficiency railing polishing grinding wheel and preparation method thereof |
| CN109590915A (en) * | 2018-12-14 | 2019-04-09 | 郑州狮虎磨料磨具有限公司 | A kind of cymbal type resin wheel and preparation method thereof |
| CN109605232A (en) * | 2019-01-03 | 2019-04-12 | 郑州狮虎磨料磨具有限公司 | A kind of cutting sheet and preparation method thereof |
| CN112917403A (en) * | 2021-01-27 | 2021-06-08 | 江苏新砺河磨具科技有限公司 | Multi-layer feeding process method for hot-pressing grinding wheel for grinding steel rail |
| WO2021206603A1 (en) * | 2020-04-07 | 2021-10-14 | Husqvarna Ab | Multi-layer abrasive tools for concrete surface processing |
| CN113649958A (en) * | 2021-07-06 | 2021-11-16 | 巴蒂士(嘉兴)磨具科技股份有限公司 | Production system and production method of resin grinding wheel and resin grinding wheel |
| CN114029873A (en) * | 2021-10-27 | 2022-02-11 | 宁波大华砂轮有限公司 | Angle grinding sheet and preparation method thereof |
| CN114211411A (en) * | 2021-12-28 | 2022-03-22 | 江苏华东砂轮有限公司 | Large-size monocrystalline silicon piece ultra-precision machining polishing grinding wheel and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1543923A1 (en) * | 2003-12-19 | 2005-06-22 | August Rüggeberg GmbH & Co. KG | Roughing disc |
| CN1994678A (en) * | 2006-01-06 | 2007-07-11 | 张洪杰 | Grinding wheel dedicated for processing needle head |
| CN103111948A (en) * | 2012-12-14 | 2013-05-22 | 姜堰苏蒙砂轮有限公司 | Grinding roller shock absorption grinding wheel adjustable in hardness |
| CN104023916A (en) * | 2011-11-09 | 2014-09-03 | 3M创新有限公司 | Composite abrasive wheel |
| CN104669131A (en) * | 2015-02-16 | 2015-06-03 | 江西峰竺新材料科技有限公司 | Calcium sulfate whisker reinforced resin grinding wheel and preparation method thereof |
-
2016
- 2016-11-24 CN CN201611043026.XA patent/CN106346379B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1543923A1 (en) * | 2003-12-19 | 2005-06-22 | August Rüggeberg GmbH & Co. KG | Roughing disc |
| CN1994678A (en) * | 2006-01-06 | 2007-07-11 | 张洪杰 | Grinding wheel dedicated for processing needle head |
| CN104023916A (en) * | 2011-11-09 | 2014-09-03 | 3M创新有限公司 | Composite abrasive wheel |
| CN103111948A (en) * | 2012-12-14 | 2013-05-22 | 姜堰苏蒙砂轮有限公司 | Grinding roller shock absorption grinding wheel adjustable in hardness |
| CN104669131A (en) * | 2015-02-16 | 2015-06-03 | 江西峰竺新材料科技有限公司 | Calcium sulfate whisker reinforced resin grinding wheel and preparation method thereof |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109015423A (en) * | 2018-08-30 | 2018-12-18 | 珠海大象磨料磨具有限公司 | A kind of grinding wheel and preparation method thereof for lightweighting materials processing |
| CN109290964A (en) * | 2018-11-05 | 2019-02-01 | 深圳市汉通实业有限公司 | A kind of high efficiency railing polishing grinding wheel and preparation method thereof |
| CN109590915A (en) * | 2018-12-14 | 2019-04-09 | 郑州狮虎磨料磨具有限公司 | A kind of cymbal type resin wheel and preparation method thereof |
| CN109605232A (en) * | 2019-01-03 | 2019-04-12 | 郑州狮虎磨料磨具有限公司 | A kind of cutting sheet and preparation method thereof |
| WO2021206603A1 (en) * | 2020-04-07 | 2021-10-14 | Husqvarna Ab | Multi-layer abrasive tools for concrete surface processing |
| US11494716B2 (en) | 2020-04-07 | 2022-11-08 | Husqvarna Ab | System, apparatus, and method for determining a surfacing or cutting consumable products |
| CN112917403A (en) * | 2021-01-27 | 2021-06-08 | 江苏新砺河磨具科技有限公司 | Multi-layer feeding process method for hot-pressing grinding wheel for grinding steel rail |
| CN113649958A (en) * | 2021-07-06 | 2021-11-16 | 巴蒂士(嘉兴)磨具科技股份有限公司 | Production system and production method of resin grinding wheel and resin grinding wheel |
| CN114029873A (en) * | 2021-10-27 | 2022-02-11 | 宁波大华砂轮有限公司 | Angle grinding sheet and preparation method thereof |
| CN114211411A (en) * | 2021-12-28 | 2022-03-22 | 江苏华东砂轮有限公司 | Large-size monocrystalline silicon piece ultra-precision machining polishing grinding wheel and preparation method thereof |
| CN114211411B (en) * | 2021-12-28 | 2022-09-13 | 江苏华东砂轮有限公司 | Large-size monocrystalline silicon piece ultra-precision machining polishing grinding wheel and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106346379B (en) | 2018-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106346379A (en) | Formula and machining method of resin grinding wheel angle abrasive disc | |
| CN103465179B (en) | Resin rough grinding wheel and preparation method thereof | |
| CN106392921A (en) | Formula of elastic grinding piece and machining method thereof | |
| CN102814747B (en) | A kind of CBN resin wheel and preparation method thereof | |
| CN107363743B (en) | A kind of formula and processing method of cutting-grinding dual-purpose resin wheel | |
| CN102814759B (en) | A kind of diamond-resin grinding wheel and preparation method thereof | |
| CN102363287B (en) | Resin grinding wheel and manufacturing method thereof | |
| CN105798782B (en) | Diamond resin grinding wheel and preparation method thereof | |
| CN102343558A (en) | Resin abrasive cutting wheel and manufacturing method thereof | |
| CN103962978A (en) | Grinding wheel manufacturing method | |
| CN102814745B (en) | A kind of fused alumina zirconia resin wheel and preparation method thereof | |
| CN106378714A (en) | Ultra-thin resin dicing blade for QFN high-quality cutting and preparing method of ultra-thin resin dicing blade | |
| CN102814762B (en) | A kind of polyaminobismaleimide resin emery wheel and preparation method thereof | |
| CN109794862A (en) | Stainless steel pulp cavity reamer combined binder CBN grinding wheel and its application | |
| CN105779850B (en) | A kind of preparation method of strong diamond-impregnated bit carcass and drill bit | |
| CN105798307B (en) | Based on the cutting of IC package device laminated metallic base diamond saw blade and manufacture method | |
| CN102814757B (en) | A kind of pink fused alumina resin wheel and preparation method thereof | |
| CN107058826A (en) | A kind of precision fixture of machine tool alloy and preparation method thereof | |
| CN103481211A (en) | High-precision grinding consolidation flexible sand wheel and manufacturing method thereof | |
| CN110497326A (en) | A kind of resin wheel and preparation method thereof for rail cutting | |
| CN109277956B (en) | High-speed grinding wheel for handheld engine large-diameter cutting machine and production process | |
| CN104002255B (en) | The ultra-thin resin energy-conserving and environment-protective abrasive cut-off wheel of cymbal shape and its manufacture craft | |
| CN108972382A (en) | A kind of coated abrasive tool multilayer abrasive material and preparation method thereof and coated abrasive tool | |
| CN106112830B (en) | Edging wheel and its manufacture method | |
| CN105856081B (en) | A kind of micro- bore uses fine grinding hard grinding wheel and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |