CN103492126B - Method for grinding and abrasive product - Google Patents

Method for grinding and abrasive product Download PDF

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Publication number
CN103492126B
CN103492126B CN201280018778.4A CN201280018778A CN103492126B CN 103492126 B CN103492126 B CN 103492126B CN 201280018778 A CN201280018778 A CN 201280018778A CN 103492126 B CN103492126 B CN 103492126B
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Prior art keywords
diamond
packing particle
emery wheel
particle
mixture
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CN201280018778.4A
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CN103492126A (en
Inventor
雅努什·哈伊杜克
詹姆斯·L·麦卡德尔
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3M Innovative Properties Co
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3M Innovative Properties Co
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Classifications

    • 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
    • B24D3/30—Resins or natural or synthetic macromolecular compounds for close-grained structure
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/18—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work
    • B24B5/22—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work for grinding cylindrical surfaces, e.g. on bolts
    • 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
    • B24D3/04—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 inorganic
    • B24D3/06—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 inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
    • B24D3/10—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 inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements for porous or cellular structure, e.g. for use with diamonds as abrasives
    • 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
    • B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
    • B24D3/342—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent
    • B24D3/344—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent the bonding agent being organic
    • 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
    • B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
    • B24D3/346—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties utilised during polishing, or grinding operation

Abstract

The present invention relates to a kind of resinoid bond emery wheel for being suitable to be ground composite polycrystal-diamond.The resinoid bond emery wheel is using with the diamond of volume percentage high concentration, and the mixture of hard packing particle and soft packing particle, to be effectively ground composite polycrystal-diamond, and while the needs of the outer surface of elimination or reduction continuous dressing resinoid bond emery wheel.

Description

Method for grinding and abrasive product
Background technology
Composite polycrystal-diamond (PDC) is including the polycrystalline diamond layer for being bound to tungsten carbide base material.Polycrystalline diamond layer High rigidity and wearability are provided, and carbide layers improve the toughness of composite.PDC is typically used as drilling to earth's surface to obtain Obtain the cutter tip of the prospecting bore bit of natural resources.
Resinoid bond emery wheel with diamond abrasive grain can be used for PDC grindings and finishing to its final specified size. Due to the interface of the material of two different hardness, PDC is extremely difficult with grinding.Due to the extreme hardness of polycrystalline diamond layer, in resin Diamond abrasive in bonding agent emery wheel is exceedingly fast passivation.In addition, tungsten carbide base material carries emery wheel, enter one so as to reduce abrasive wheel The ability of step grinding polycrystalline diamond layer.Therefore, resinoid bond emery wheel must with carbonization Silicon stone repair every now and then, with reduce or The Tungsten Carbides of emery wheel are eliminated, and exposes new Diamond Cutting point.
The content of the invention
In order to improve the grinding of the PCD carried out using resinoid bond emery wheel, it is desirable to reduce or eliminate with carbonization Silicon stone Needs of finishing resin binding agent emery wheel frequently.Reduce or eliminate the needs of finishing resin binding agent emery wheel and while still obtaining Acceptable cutting rate on the polycrystalline diamond layer of PDC can improve safety and the efficiency of grinding action.If resin Bonding agent emery wheel need not be frequently in finish ground PDC finishing, then emery wheel operator can run more than one grinding machine.
Therefore, on the one hand, the invention reside in a kind of method for grinding, which includes：Make composite polycrystal-diamond and emery wheel Contact；The emery wheel includes diamond, resinoid bond, and the mixture of hard packing particle and soft packing particle；And wherein Based on the diamond concentration that diamond described in stereometer is 175 to 225, based on resinoid bond described in stereometer be 30% to 40%, in mixture, the ratio of hard packing particle and soft packing particle is 85:15 to 15:85, and it is based on stereometer hard packing grain The mixture of son and soft packing particle is 5% to 30%.
On the other hand, the invention reside in a kind of abrasive product, which includes：Emery wheel, the emery wheel include diamond, resin Binding agent, and the mixture of hard packing particle and soft packing particle；And wherein based on diamond described in stereometer be 175 to 225 diamond concentration, includes 30% to 40% based on resinoid bond described in stereometer, and in mixture, hard packing particle is filled out with soft The ratio of material particle is 85:15 to 15:85, and the mixture based on stereometer hard packing particle and soft packing particle comprising 5% to 30%。
Description of the drawings
Reusable reference number is intended to indicate that same or similar feature of the invention or unit in the specification and illustrated in the drawings Part.
Fig. 1 is shown using the centerless grinding operated PDC to be ground to the resinoid bond emery wheel of its final diameter Process.
Fig. 2 shows the resinoid bond emery wheel of the present invention relative to the comparative resin bonding agent with different finishing frequencies The grinding result of emery wheel.
Definition
As used herein, the modification of word "comprising", " having " and " including " is legally to be equal to and open. Therefore, except enumerate element, function, step or in addition to limiting, the element that can also have other unrequited, function, step or Limit.
Specific embodiment
Referring to Fig. 1, show and be not in the mood for grinding machine 10.Not being in the mood for grinding machine includes resinoid bond emery wheel 12, left regulation wheel 14 and is used for Keep the supporting member 16 of the PDC 18 between two wheels.PDC includes the polycrystalline diamond layer 20 for being bound to tungsten carbide base material 22. PDC is advanced through the speed controlled axis in resinoid bond emery wheel 12 and left regulation wheel 14 at the grinding interface between two wheels The rotary speed of pitch angle alpha and left regulation wheel between axis.The resinoid bond emery wheel of prior art needs to use carborundum Stone repairs outer surface 26 every now and then, with the ability for keeping resinoid bond emery wheel to be ground polycrystalline diamond layer.
The finishing of outer surface during in order to reduce or eliminate grinding PDC, it is desirable to make resinoid bond emery wheel behave like pottery The emery wheel that porcelain is combined.This effect can be realized in the following way：Using high diamond concentration, and while including hard packing Both particle and soft packing particle are with the damaged speed of control resinoid bond abrasive wheel.This resinoid bond emery wheel will ensure that New diamond particles in exposure wheel, and while reduce or eliminate the passivation using process outer surface（glazing）.It is highly concentrated Degree diamond fraction can be outer ring surface, the part charge of emery wheel or the whole emery wheel of emery wheel.
Suitable diamond for abrasive wheel includes such as natural diamond, diamond synthesis, resinoid bond Buddha's warrior attendant Stone, metal-bonded diamond, metal abrasives powder, aforesaid resinoid bond or ceramic bond diamond agglomerate, with And aforementioned all of combination.In order to obtain the required hardness of resinoid bond abrasive wheel, diamond concentration is high.Especially, make Diamond concentration for the percent by volume of the cumulative volume of the high concentration diamond fraction of emery wheel is 175 to 225 or 180 to 200. Diamond concentration less than 175 will not reduce the needs of finishing, and the concentration more than 225 becomes to be difficult to tie with enough integrity Close.Can use or not use metal（Such as nickel or copper）Coating diamond.If using the diamond of metal coated, coating weight Percentage ratio should be less than 40%, or be less than or equal to 30%.Diamond concentration can be reduced to too low level by excessive coating weight, no The finishing of the resinoid bond emery wheel of reduction is produced in use can.If do not condensed, the size of diamond should be 60/ 80 mesh sizes are between 200/230 mesh size.Bulk density needed for the scope of these limit above and below will not be provided With the diamond concentration needed for obtaining.
Although resin bonding agent diamond can be suitable（Particularly when agglomeration）, but diamond is preferably metal knot Mixture diamond.Resin bonding agent diamond it is usual excessively weak and frangible and to be ground PDC in being not used to resinoid bond emery wheel. It is frangible that intensity can be obtained（It is weaker）To less frangible（It is higher）Metal-bonded diamond.This intensity grading is by each confession Business is answered to use different titles to describe.In order to more effectively expose new diamond, preferred weaker metal-bonded diamond. For example, if using from ABC super hard abrasives company（ABC Superabrasives）Diamond, then intensity is in ABS 2 （It is weak）To ABS 9（By force）In the range of grade.When using ABC super hard abrasive diamond, diamond be advantageously ABS 2 or ABS 3.The worldwide super hard abrasive strength grade of WSG 200 to WSG 900 can be obtained.The diamond of proper strength can be wrapped Include WSG200, WSG300, WSG400 and WSG500.LANDS super hard abrasives have entitled LS200, LS230, LS250, The intensity of LS260, LS270 and LS290.The diamond of proper strength may include LS200, LS230 and LS240.Generally, 50% Under metal adhesive diamond strength range for given supplier be suitable.
Include the resin containing formaldehyde, such as phenol formaldehyde (PF), line with the suitable resinoid bond that diamond abrasive grain is used together Property the phenolic resin and cross-linking agent particularly with addition（Such as hexamethylenetetramine）Those, bakelite and amino modeling Material；Unsaturated polyester resin；Vinyl ester resin；Alkyl resin, allyl resin；Furane resins；Epoxy resin；Polyurethane； Cyanate ester；And polyimides.In resinoid bond emery wheel, the amount of resin glue used is high concentration Buddha's warrior attendant Plumbum preparatium Point about 30 volumes % to about 40 volumes %, such as about 35 volumes %.Generally, the amount of resin should be enough in the fabrication process completely The surface of all independent particles of moistening, so as to form the continuous resin structure substantially free of hole rate, inorganic component is in whole institute Discrete combination in continuous resin structure is stated, the continuous resin structure includes the frame for movement of emery wheel.
Suitable filler additive may include to strengthen particle, grinding aid, desiccant, coloring agent and lubricant.As described, removing Outside diamond, strengthen and control the damaged speed of emery wheel using both hard packing particle and soft packing particle.Hard packing Particle（Diamond is not included）It is 7 or those bigger for Mohs hardness.Suitable hard packing particle includes aluminium oxide, carbonization Silicon, zirconium oxide, the ceramic alpha alumina particle for being typically derived from boehmite collosol and gel, or its with required Mohs hardness His abrasive particle.Soft packing particle is with 5 or less Mohs hardness.Suitable soft packing includes petroleum coke, pyrophyllite, ice crystal Stone, Calx, graphite, fire resisting grog, ball clay, copper or Talcum.Hard packing particle with the volume ratio of soft packing particle is（Can be）15: 85 to 85:15, or 30:70 to 70:30, or 40:60 to 60:40.Suitable hard packing particle size includes being equal to or less than about 30 microns of size, such as 600,800 or 1000 ANSI mesh equivalents.Suitable soft packing particle size includes 100 mesh or thinner. If desired, soft grit can have thin portion point and thick portion point.The thin portion point is thinner than 280 mesh, and the thick portion point can be 100 To 180 mesh.If using the soft packing particle of two kinds of sizes, corase particleses can be 50 relative to the volume fraction of fine particle:50 To 70:30.The excessive volume fraction of hard packing particle prevents breakage, so as to the heat for causing emery wheel is gathered and is passivated and soft The excessive volume fraction of filler grain can adversely increase the rate of depreciation of emery wheel.It is hard used in resinoid bond emery wheel The percent by volume of the mixture of filler grain and soft packing particle for high concentration diamond fraction 5% to 30%, or 8% to 20%。
Other fillers may include threadiness and board-like material, such as carbon or glass whisker and Muscovitum.Grinding aid such as cryolite, Potassium tetrafluoroborate（KBF4), polrvinyl chloride, lignosulfonates and their blend.Can by such as organic or inorganic pigment or The coloring agent of dyestuff is mixed in emery wheel.
Example
Objects and advantages of the present invention are further illustrated by following non-limiting examples.It is previously mentioned in these examples Concrete material and its amount and other conditions and details, are not necessarily to be construed as the improper restriction to the present invention.Unless referred in addition Go out, all numbers in instances, percentage ratio, ratio etc. are by weight.
The present invention and contrast emery wheel are prepared using following material.
Table 1：Component
The emery wheel of example 1,7,9 to 14 and comparative example 1A to 6A is prepared, and tests the emery wheel them to be evaluated to PDC's Grinding performance.Example 1 and comparative example 1A are evaluated under different wheel dress operations.The percentage by weight group of each emery wheel Into being shown in table 2.
For forming the general procedure of wheel portion
In table 2, each listed compositions are thoroughly mixed 4 hours in 1000ml polyethylene mixing wide mouthed bottles, roll squeezer（2 Rod drum bottom（2-Bar Tumbler Base）, the C＆M Topline companies of California Ge Leta（C&M Topline Inc.,Goleta CA））Setting is of about 180rpm.Abrasive wheel is directly born against on the phenolic resin core of preforming, to produce Raw 1A1 type abrasive wheels part 8 " OD × 1.25 " TK × 1.25 " ID, and diamond depth x=0.375.By revolving in annular table Turn die assembly, and while abrasive powders mixture is poured into the annular housing around core, so as to be combined with compound abrasive Thing fills the die cavity in the double compression moulding steel molds of five ring dies.Then make powder smooth and flat with plastic flat ruler instrument, and The mould being filled through with the closing of top ring die.
The mould being filled through is placed in 200 tons to be heated in platen hydraulic press, platen set point temperature is set in 350 ℉.Close Press platen is closed so that ring die surface is flushed with mold shell.Magnetic force thermometer is attached to into the side of mold shell, and Supervision molding temperature.When mold shell reaches 350 ℉, mould remains turned-off 20 minutes under stress.
Under 350 ℉ 20 minutes afterwards, die assembly is taken out from platen press of being heated, is placed on water cooled steel platform, Allow to cool to room temperature.Mold shell is removed from the wheel part of molding using 50 t hydraulic press and steel plate washer.According to following program The wheel part of curing molding in atmosphere.150 ℉ are warming up within 1 hour, are incubated under 150 ℉ within 1 hour, are warming up to 350 within 4 hours ℉, is incubated under 350 ℉, is cooled to room temperature within 3 hours afterwards for 7 hours.
Wheel part surface is ground to into thickness, then two is partially bonded together using epobond epoxyn.So It is afterwards using 40/60 coarseness SiC emery wheel refine in 3M E228 refine and straightener and finishing integrated structure, final to be obtained Test emery wheel.
Grinding test
Using not being in the mood for grinding machine（47 types of Acme are not in the mood for grinding machine, the state of Michigan this hill Ke Mu manufacturing companies of Austria（Acme Manufacturing Company,Auburn Hills,Michigan））Grinding is available from Synesis Company of the Utah State Orem U.S. （US Synthetic Corporation,Orem,Utah）Cylindrical diamond custting machine plug-in unit (PDC), the centreless grinding Machine is using the wide resin bonding agent diamond wheel in 8 " diameter × 2.5 " of example 1 and comparative example A.In grinding process, PDC is pacified Keeping PCD in fixture loaded on spring-loaded.Emery wheel speed is for about 4000SFPM, and it is for about 55SFPM to adjust wheel speed, is adjusted The helical angle setting of wheel is for about 3 degree.This provides the Grinding Contact time of about 5.5 seconds/PDC load.Using 5% in water “Shell Metalina Y-850”（The shell lubricant company of Houston, TX（Shell Lubricants, Houston,Texas））Coolant flow.Depending on the size of PDC, 2 PDC/ load or 3 PDC/ load are used as described below Tested：
Test mode PDC diameters Diamond depth/PDC Tungsten carbide depth/PDC
2 PDC Nominal 0.63 " 0.085″ 0.4365″
3 PDC Nominal 0.63 " 0.062″ 0.257″
Tested using comparative example 1A, and confirmed that 2 PDC patterns provide the polycrystalline diamond body similar with 3 PDC patterns Product removal rate.The motor load in grinding process is controlled into more than zero load about 2.5- via the feed control of left regulation wheel 3.1 ampere.After per plowing, retrofit testing emery wheel is for altofrequency retrofit testing.For low frequency retrofit testing, per 10 Each emery wheel is repaired after time." the white finishing rod by making 220 coarsenesses, 1 " × 1 " × 6（" 3M repairs rod 200TH ", bright Buddhist nun The 3M companies in Su Dazhou Sao Paulo（3M Company,St.Paul,Minnesota））Contact with wheel, and make the white finishing Rod is moved through takes turns 6 times altogether, so as to complete finishing.
Comparative example 1A is the resin knot of the prior art by 3M Companies with parts number MMMRBDW26435-R Mixture emery wheel.Comparative example 2A and 3A use the resin bonding agent diamond of non-agglomeration, when PDC is ground, the tree of the non-agglomeration Fat binder diamond is excessively frangible, and departs from the outer surface of emery wheel, so as to cause excessively passivation and poor cutting.It is right Ratio 4A using about 125 with comparative example 1A identical diamond concentration, and using frangible soft packing particle rather than can The soft packing particle of extension.That what is repaired needs reduction, but not notable.Diamond concentration of comparative example 6A using identical 125, But replace the diamond of thin rank with the diamond of coarser level.Not to be noted significant performance difference.Example 1 (185), example 7 (225), example 9 (200) and example 10 (200) are using significantly higher diamond concentration and hard packing particle and soft packing The mixture of particle, as mentioned above.During test grinding on PDC, the needs of finishing are substantially reduced.
Referring now to Fig. 2, when per plowing using finishing, the rate of cutting noticeably greater than contrast emery wheel of the emery wheel of the present invention Rate of cutting（0.0027 cubic inch relative to 0.0023 cubic inch）, it is when only per 10 times using finishing, of the invention Wheel is with good rate of cutting level（0.0013 cubic inch relative to 0.0008 cubic inch）.Using only repairing per 10 times The rate of cutting of the wheel of the whole present invention is about the 48% of single time rate of cutting, relative with about the 35% of contrast wheel 1A.
By the customer evaluation example 1 that PDC is produced using centerless grinding.The external diameter of PDC is reduced to most by centerless grinding application Diameter/tolerance needed for end, and carry out under coolant flow.Before by the existing emery wheel that customer uses need frequently or Substantially continuous abrasive media finishing, to keep raw material to remove using existing diamond lap emery wheel.When by 1 emery wheel of example Be installed on when not being in the mood on grinding machine, using and existing diamond lap emery wheel identical before before grinding condition processing PDC. During the centerless grinding of PDC, medium is not repaired using outer abrasive on 1 emery wheel of example.Using existing procedure parameter, Centerless grinding operation continuously PDC can be prepared into needed for final size and simultaneously acquisition identical productivity ratio, and need not be On the surface of the emery wheel of example 1 abrasive wheel is used to repair or rebuild medium during preparing PDC.It is used it is any before Emery wheel existing processing conditionss under, be ground PDC when be completely absent finishing medium be impossible before.Additionally, During grinding PDC, the emery wheel of example 1 is consumed to core completely, and any moment in grinding process all without become passivation or Do not work.
Under the premise without departing from the spirit and scope of the present invention, more particularly, without departing from appended claims Shown in spirit and scope on the premise of, one of ordinary skill in the art can put into practice the present invention other modifications And variations.It should be appreciated that the aspect of various embodiments can wholly or partly with other of various embodiments in terms of Exchange or combine.In the patent application of patent certificate achieved above, the list of references of all references, patent or patent application is complete Text is incorporated herein by reference by consistent mode.Exist between the list of references part and present patent application being incorporated to In the case of inconsistent or contradiction, information that should be in preceding description is defined.In order that one of ordinary skill in the art can Put into practice claimed invention and given preceding description should not be understood as limiting the scope of the present invention, The scope of the present invention is limited by claims and its all equivalents.

Claims (8)

1. a kind of method for grinding, which includes：
Composite polycrystal-diamond is made to contact with emery wheel；
The emery wheel includes diamond, resinoid bond, and the mixture of hard packing particle and soft packing particle；With
Wherein based on diamond described in stereometer comprising 175 to 225 diamond concentration, based on resinoid bond described in stereometer For 30% to 40%, in the mixture, the ratio of hard packing particle and soft packing particle is 85:15 to 15:85, and it is based on body The mixture of product meter hard packing particle and soft packing particle is 5% to 30%.
2. method according to claim 1, wherein the ratio of hard packing particle and soft packing particle is in the mixture 70:30 to 30:70.
3. method according to claim 1, wherein the diamond includes metal-bonded diamond.
4. method according to claim 2, wherein the hard packing particle includes ceramic alpha-aluminium oxide, and the soft packing Particle includes petroleum coke.
5. a kind of abrasive product, which includes：
Emery wheel, the emery wheel include diamond, resinoid bond, and the mixture of hard packing particle and soft packing particle；With
Wherein based on diamond described in stereometer comprising 175 to 225 diamond concentration, based on resinoid bond described in stereometer For 30% to 40%, in the mixture, the ratio of hard packing particle and soft packing particle is 85:15 to 15:85, and it is based on body The mixture of product meter hard packing particle and soft packing particle is 5% to 30%.
6. abrasive product according to claim 5, wherein in the mixture hard packing particle and soft packing particle ratio Example is 70:30 to 30:70.
7. abrasive product according to claim 5, wherein the diamond includes metal-bonded diamond.
8. abrasive product according to claim 5, wherein the hard packing particle includes ceramic alpha-aluminium oxide, and it is described soft Filler grain includes petroleum coke.
CN201280018778.4A 2011-04-18 2012-04-17 Method for grinding and abrasive product Active CN103492126B (en)

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US201161476428P 2011-04-18 2011-04-18
US61/476,428 2011-04-18
PCT/US2012/033880 WO2012145284A2 (en) 2011-04-18 2012-04-17 Resin bonded grinding wheel

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CN103492126B true CN103492126B (en) 2017-03-29

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WO2012145284A2 (en) 2012-10-26
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