US20110111678A1 - Abrasive article with improved grain retention and performance - Google Patents

Abrasive article with improved grain retention and performance Download PDF

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Publication number
US20110111678A1
US20110111678A1 US12/768,107 US76810710A US2011111678A1 US 20110111678 A1 US20110111678 A1 US 20110111678A1 US 76810710 A US76810710 A US 76810710A US 2011111678 A1 US2011111678 A1 US 2011111678A1
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US
United States
Prior art keywords
grain
abrasive
cutoff wheel
wheel according
active
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.)
Abandoned
Application number
US12/768,107
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English (en)
Inventor
Han Zhang
Johannes Hermanus Kuit
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Abrasifs SA
Saint Gobain Abrasives Inc
Original Assignee
Saint Gobain Abrasifs SA
Saint Gobain Abrasives Inc
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Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=43032754&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US20110111678(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority to EP10150370.4A priority Critical patent/EP2177318B1/en
Application filed by Saint Gobain Abrasifs SA, Saint Gobain Abrasives Inc filed Critical Saint Gobain Abrasifs SA
Priority to US12/768,107 priority patent/US20110111678A1/en
Priority to KR1020117027918A priority patent/KR101326032B1/ko
Priority to NZ596311A priority patent/NZ596311A/en
Priority to BRPI1014834A priority patent/BRPI1014834A2/pt
Priority to SG2011078896A priority patent/SG175807A1/en
Priority to CA2760208A priority patent/CA2760208A1/en
Priority to PCT/US2010/032659 priority patent/WO2010126934A2/en
Priority to JP2012508616A priority patent/JP2012525273A/ja
Priority to CN2010800245066A priority patent/CN102470513A/zh
Priority to RU2011147732/02A priority patent/RU2498892C2/ru
Priority to MX2011011383A priority patent/MX2011011383A/es
Priority to AU2010241762A priority patent/AU2010241762B2/en
Assigned to SAINT-GOBAIN ABRASIFS, SAINT-GOBAIN ABRASIVES, INC. reassignment SAINT-GOBAIN ABRASIFS ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ZHANG, HAN, KUIT, JOHANNES HERMANUS
Publication of US20110111678A1 publication Critical patent/US20110111678A1/en
Priority to IL215958A priority patent/IL215958A0/en
Priority to ZA2011/08220A priority patent/ZA201108220B/en
Priority to CO11161972A priority patent/CO6470829A2/es
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/12—Cut-off wheels
    • 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
    • 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
    • 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
    • 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

Definitions

  • the present invention relates generally to abrasive articles and more particularly to an abrasive article with improved grain retention and performance.
  • Abrasive articles are typically used in various industries to machine workpieces by cutting, lapping, grinding, or polishing.
  • the use of abrasive articles for machining spans a wide industrial scope from optics industries, automotive plant repair industries to metal fabrication industries.
  • manufacturing facilities use abrasives to remove bulk material to reach designed dimensions, geometry, and surface characteristics of products (e.g., planarity, surface roughness).
  • manufacturers of rough grinding abrasive articles are constantly challenged to make abrasive articles that meet higher productivity as well as high performance requirements specified by their customers.
  • One particular reason why manufacturers are challenged to make rough grinding abrasive articles that meet higher productivity and performance requirements is that the abrasive articles are subject to not only mechanical failure due to abrasive grain fracture or attrition or bond fracture, but also to thermal failure at the interface of the abrasive grain and their surrounding organic bond (i.e., grain pull-out).
  • the high power associated with rough grinding abrasive articles to remove material without any coolant to remove the heat makes these articles more prone to the latter type of failure (i.e., thermal degradation at the interface of the abrasive grain and bond).
  • thermal degradation is even more apparent when using an abrasive grain that exhibits good resistance to mechanical fractures. Eventually, the thermal degradation weakens the rough grinding abrasive articles, impairing performance and ultimately leading to a shorter life. Thermal degradation can be especially problematic relative to ultra-thin, dry cut-off wheels, which tend to reach thermal degrading temperatures very quickly at the grain/bond interface.
  • an ultra-thin, small diameter cutoff wheel comprising: a plurality of abrasive grains, an organic bond material and an active filler material.
  • the active filler material comprises an effective amount of an active endothermic filler material that provides an endothermic reaction at normal dry cutting conditions.
  • an ultra-thin, small diameter cutoff wheel that comprises a plurality of abrasive grains and an organic bond material comprising an active endothermic filler material providing an endothermic reaction added thereto.
  • the amount of active endothermic filler material is in a range of about 12 to about 50 percent by volume of the bond.
  • an ultra-thin, small diameter cutoff wheel that comprises a plurality of abrasive grains and an organic bond material with an active endothermic filler material added thereto to provide an endothermic reaction that improves grain retention.
  • the plurality of abrasive grains are selected from the group consisting of seeded or unseeded sol gel alumina grain, Al 2 O 3 —ZrO 2 grain and combinations thereof.
  • the active endothermic filler material is selected from the group consisting of sulfides, low melting point oxides and combinations thereof.
  • FIG. 1 is an image of an abrasive article according to one embodiment of the present invention
  • FIG. 2 is a micrograph image of a conventional abrasive article showing a large-number of grain pull-out according to the prior art
  • FIG. 3 is a micrograph image of an abrasive article formed according to one embodiment of the present invention.
  • FIG. 1 is an image of an abrasive article 100 according to one embodiment of the present invention.
  • abrasive article 100 is an abrasive wheel product.
  • abrasive wheel products come in a variety of sizes such as for example, large diameter cutoff abrasive wheel products, medium diameter cutoff abrasive wheel products and small diameter cutoff abrasive wheel products.
  • large diameter cutoff abrasive wheel products have a diameter that is greater than about 1000 mm
  • medium diameter cutoff abrasive wheel products have a diameter that is greater than about 400 mm and less than about 1000 mm
  • small diameter cutoff abrasive wheel products have a diameter that is less than about 400 mm.
  • abrasive mix used to form abrasive article 100 is preferably suitable for small diameter cutoff abrasive wheel products and more particularly to ultra-thin, small diameter cutoff abrasive wheel products that have diameters less than about 250 mm, those skilled in the art will recognize that the abrasive mix used to form abrasive article 100 may have applicability for large diameter cutoff abrasive wheel products and medium diameter cutoff abrasive wheel products as well.
  • abrasive article 100 is an ultra-thin, small diameter bonded abrasive article formed from an abrasive mix that comprises abrasive grains and an organic bond material with active filler materials added thereto such as active endothermic filler material(s).
  • active endothermic filler material(s) provide an endothermic reaction at “normal dry cutting conditions” to reduce the temperature at the interface of grains and their surrounding organic bond.
  • active fillers can be used in bonded abrasives to enhance grinding performance.
  • Active fillers also known as reactive fillers, are designed to be physically and/or chemically active. They generally provide extended, increased cutting rates and coolness of cut.
  • active fillers can do one or more of the following:
  • abrasive article 100 will have improved cutting performance and longer life than other ultra-thin cutoff abrasive wheel products formed from conventional abrasive mixes.
  • the abrasive article 100 contains at least one type of primary abrasive grain selected from the group of abrasive families consisting of seeded or unseeded sol gel alumina and Al 2 O 3 —ZrO 2 .
  • a non-exhaustive list of abrasive grains from the seeded or unseeded sol gel alumina family that may be used in embodiments of this invention include SG grain and NQ grain, commercially available from Saint-Gobain Abrasives, Inc. of Worcester, Mass.; 3M321 Cubitron grain and 3M324 Cubitron grain, both commercially available from 3M Corporation of St. Paul, Minn.; and combinations thereof.
  • a non-exhaustive list of abrasive grains from the Al 2 O 3 —ZrO 2 family that may be used in embodiments of this invention include NZ Plus grain, commercially available from Saint-Gobain Abrasives, Inc. of Worcester, Mass.; ZF grain and ZS grain, both commercially available from Saint-Gobain Abrasives, Inc. of Worcester, Mass.; ZK40 grain, commercially available from Schwarzacher Industry, Inc. of Toronto, Ontario Calif.; and ZR25B grain and ZR25R grain, both commercially available from Alcan, Inc. of Montreal, Quebec CA.
  • the amount of the primary abrasive grain comprises between about 20 to about 100 percent of the total amount of abrasive grain by volume.
  • At least one type of secondary abrasive grain can be blended with the primary abrasive grain to achieve either cost or performance requirements.
  • the secondary abrasive grain may be selected from the group consisting of ceramic oxides (e.g., coated or non-coated fused Al 2 O 3 , monocrystal Al 2 O 3 ), nitrides (e.g., Si 3 N 4 , AlN) and carbides (e.g., SiC).
  • the amount of the secondary abrasive grain may range from about 80 to about 0 percent of the total amount of abrasive grain by volume or balance.
  • the organic bond material is comprised essentially of art-recognized organic bond material, such as one or more organic resins—e.g. epoxy, polyester, phenolic, and cyanate ester resins, or other suitable thermosetting or thermoplastic resins.
  • organic resins e.g. epoxy, polyester, phenolic, and cyanate ester resins, or other suitable thermosetting or thermoplastic resins.
  • the bond material comprises a dry resin material.
  • types and amounts of active endothermic fillers are chosen in order to provide an endothermic reaction at “normal dry cutting conditions.”
  • the term “normal dry cutting conditions” refers generally to those conditions encountered at the grain/bond interface of a small diameter, ultra-thin cutoff wheel during dry cutting of common materials for which the wheel is designed to cut/grind.
  • An “effective amount” of active endothermic filler provides an endothermic reaction at normal dry cutting conditions. These conditions typically include very quick ramping to thermal degrading temperatures in excess of 450° C. Thermal degradation can be especially problematic relative to ultra-thin, dry cutoff wheels, which tend to transfer heat very quickly and to reach thermal degrading temperatures very quickly at the grain/bond interface.
  • the active endothermic fillers produce an endothermic reaction at the conditions typically encountered during dry cutting and, therefore, reduce the temperature at the grain/bond interface, resulting in much improved grain retention and longer life.
  • the active endothermic fillers provide an endothermic reaction when temperature at the grain/bond interface is at least about 450° C., or at least about 500° C., or at least about 527° C., or at a temperature which provides an amount of thermal energy greater than the activation energy necessary to decompose the active endothermic filler. It is noted that when the heating rate is slow or if the grain/bond interface temperature is too low, exothermic reactions may occur; therefore, the thickness of the abrasive article can play a roll in obtaining the desired endothermic reaction.
  • At least one type of active endothermic filler material that provides an endothermic reaction is selected from the group of filler types consisting of sulfides and low melting point oxides.
  • a non-exhaustive list of active endothermic fillers from the sulfide types that may be used in embodiments of the present invention include pyrite, zinc sulfide, copper sulfide, and combinations thereof.
  • a non-exhaustive list of active endothermic fillers from the low melting point oxides types that may be used in embodiments of the present invention include bismuth oxide, lead oxide, tin oxide and combinations thereof. Note that in one embodiment, it is preferable that the active fillers of the low melting point oxides have a melting point below about 1000 degrees Celsius.
  • fillers may be added to the organic bond material in order to enhance the ability of abrasive article 100 to cut, lap, grind, or polish.
  • the fillers may include active and/or inactive fillers.
  • active fillers may include Cryolite, PAF, KBF 4 , K 2 SO 4 , NaCl/KCl, and combinations thereof.
  • inactive fillers may include CaO, CaCO 3 , Ca(OH) 2 , CaSiO 3 , Kyanite (a mixture of Al 2 O 3 —SiO 2 ), Saran (Polyvinylidene chloride), Nephenline (Na, K) AlSiO 4 , wood powder, coconut shell flour, stone dust, feldspar, kaolin, quartz, short glass fibers, asbestos fibers, balotini, surface-treated fine grain (silicon carbide, corundum etc.), pumice stone, cork powder and combinations thereof.
  • an active filler material such as PAF, which is a mixture of K 3 AlF 6 and KAlF 4 , can be added to the organic bond material in order to corrode metals and reduce the friction between the wheel and workpiece.
  • the formulation of the abrasive mix used to form abrasive article 100 may be as follows.
  • the abrasive grains present in this mix may range from about 35 to about 55 percent by volume of the total mix (i.e., excluding porosity).
  • the abrasive grains present in this mix may range from about 40 to about 54 percent by volume of the total mix (i.e., excluding porosity).
  • the organic bond material (e.g., resin) in this mix may range from about 25 to about 45 percent by volume of the total mix.
  • the organic bond material (e.g., resin) in this mix may range from about 30 to about 40 percent by volume of the total mix.
  • the active endothermic filler material in this mix may be in an amount that ranges from about 5 to about 30 percent by volume (amount in the total mix). In another embodiment, the active endothermic filler material in this mix may be in an amount that ranges from about 5 to about 24 percent by volume (amount in the total mix). In other embodiments, the active endothermic filler material in this mix may be in an amount that ranges from about 12 to about 50 percent by volume (amount in the total bond). While in other embodiments, the active endothermic filler material in this mix may be in an amount that ranges from about 12 to about 35 percent by volume (amount in the total bond). The balance will be other fillers that include active or inactive fillers.
  • the volume ratio of the active filler material providing endothermic reaction to the organic bond material is in the range of about 0.136 to about 1 (e.g., resin). In another embodiment, the volume ratio of the active filler material providing endothermic reaction to the organic bond material is in the range of about 0.136 to about 0.67 (e.g., resin).
  • abrasive article 100 is an ultra-thin, small diameter cutoff abrasive wheel product.
  • abrasive article 100 has a diameter that ranges from about 75 mm to about 250 mm and, a thickness of less than about 2.5 mm.
  • the thickness of the wheel is between about 0.8 mm and about 2.2 mm.
  • the wheel can have an aspect ratio that ranges from about 40 to about 160.
  • the abrasive article formed from the above-described formulation does not suffer from large amounts of grain pull-out like conventional abrasive articles.
  • Abrasive articles formed from conventional formulations are adversely affected by large amounts of grain pull-out because the bond between the abrasive grains and bond material in these mixes is unable to withstand the thermal degradation that arises from the heat input associated with the cutting action of the abrasive article.
  • the temperature at the interfaces of the grains and their surrounding organic bond at the surface level of the abrasive article is at the highest and can range from about 600 degrees Celsius to about 1000 degrees Celsius.
  • the organic bond material can act as an insulation layer due to its low thermal conductivity (i.e., less than 2 W/(m ⁇ K)) and thus the heat input from the cutting action does not substantially penetrate the depth of the abrasive article, where other layers of abrasives reside. Therefore, the temperature at the interfaces of the grains and their surrounding organic bond at these lower levels, which can be from 250 degrees Celsius to 350 degrees Celsius, is substantially less than the temperatures at the interfaces of the top surface.
  • the bond becomes weaker (a typical thermal decomposition temperature of an organic bond material such as a resin is 500 degrees Celsius) and eventually the grains at this level pull-out and fall from the surface instead of being steadily worn out through the typical attrition process.
  • the abrasive article formed from the above-described formulation suffers from less grain pull-out because it is less adversely affected by thermal degradation at the interfaces of the grains and their surrounding bond material due to the endothermic reaction occurring to reduce the interfacial temperature.
  • the abrasive articles according to embodiments of the present invention are not adversely affected by thermal degradation at the interface of the grains and their surrounding organic bond material because of the dimensioning of the wheel and the formulation of the specific types of abrasive grains and active endothermic fillers.
  • the use of the active fillers in the formulations noted above act to provide thermal decomposition of the active fillers that result in a cooling effect that lowers the temperature at the interface of the abrasive grains and the bond. This counteracts the propensity for rampant thermal degradation to occur.
  • FIG. 2 is a micrograph image 200 of a conventional abrasive article showing a large-number of grain pull-out holes 210 . Note that for ease of illustration only a few grain pull-out holes 210 are highlighted. A closer look at image 200 shows that this abrasive article formed according to the prior art has a very large number of grain pull-out holes 210 . An abrasive article with this many grain pull-out holes will not perform well and consequently will have a shorter life-span.
  • FIG. 3 shows a micrograph image 300 of an abrasive article formed according to embodiments of the present invention.
  • the abrasive article formed according to embodiments of the present invention has significantly fewer grain pull-out holes than the conventional abrasive article shown in FIG. 2 .
  • the grain pull-out holes are highlighted in FIG. 3 , it is clear that there are significantly fewer grain pull-out holes in this figure than in FIG. 2 .
  • the abrasive article in FIG. 3 has significantly fewer grain pull-out holes, this article as described herein performs cutting operations better and lasts longer than conventional abrasive articles.
  • One measurement of performance of an abrasive article is the Absolute G-Ratio.
  • the Absolute G-Ratio as described herein is attained by mounting the abrasive article on a portable machine for a dry cutting application that may have a maximum operation speed of about 80 m/s.
  • a workpiece material with typical dimensions e.g., 600 mm (length) ⁇ 100 (width) ⁇ 6 (thickness) mm
  • 600 mm (length) ⁇ 100 (width) ⁇ 6 (thickness) mm may be clamped by a vise.
  • the number of pieces of cuts from the workpiece material is then counted and recorded into a computer system along with the diameter of the abrasive article.
  • An experienced operator then manually conducts testing by using the grinder to perform cutting operations on the workpiece material.
  • a data acquisition system connected with the grinder monitors the power and current of the grinder, and cutting time during the testing. The testing lasts until the abrasive article is fully consumed.
  • the diameter of the tested article is then measured and recorded.
  • the weight of the remaining workpiece material is weighed and recorded as well.
  • the computer system using a commercially available software application determines material removal rate (MRR) and wheel wear rate (WWR).
  • the application calculates the Absolute G-Ratio by dividing MRR by WWR. A higher Absolute G-Ratio indicates that the performance of the abrasive article is better.
  • the Relative G-Ratio which is the ratio of the Absolute G-Ratio of abrasive article B divided by the Absolute G-Ratio of abrasive article A (reference), is used herein to compare the performance of abrasive articles.
  • the Relative G-Ratio of abrasive article A is 1.
  • a higher Relative G-Ratio indicates that better performance improvement has been obtained.
  • the abrasive article formed herein using the above-noted formulations has Relative G-Ratios that are greater than 1.00. Examples below show that it is possible to obtain Relative G-Ratio values that range from about 1.4 to about 2.4.
  • an abrasive article is formed with the above-noted formulation.
  • About 44 lbs of Al 2 O 3 —ZrO 2 abrasive grain blended with about 25 lbs of monocrystal Al 2 O 3 abrasive grains was added into a mixing container.
  • At least one processing liquid was introduced to the grains.
  • about 5 lbs of liquid resin was added into the abrasive grains.
  • about 11 lbs of powder resin, about 6 lbs of PAF and about 9 lbs of pyrite were prepared in a separate mixing container. The mixture of the abrasive grains with the liquid resin was poured into that separate container to mix with the powder resin, PAF, and pyrite mixture.
  • the abrasive article was formed in the same method as a conventional abrasive article, such as, for example, the forming methods described in U.S. Pat. No. 6,866,691 B1—which is incorporated by reference in its entirety.
  • the dimension of the abrasive article was 125 mm in diameter with 1 mm thickness.
  • the performance of the abrasive article with the above formulation was tested and its Relative G-Ratio (compared with a conventional abrasive article at the same dimension) was 2.2.
  • the performance improvement was due to the fact that the thermal decomposition of the pyrite reduced the temperature at the interface of the abrasive grains and their surrounding organic bond, resulting in improved grain retention and longer life.
  • this disclosure is not to be limited by proffered theories, it is contemplated that when the temperature is higher than 527 degree Celsius, decomposition of pyrite will be the dominant process due to the high activation energy.
  • an abrasive article was formed with the above noted formulation.
  • About 68 lbs of seeded or unseeded sol gel alumina Al 2 O 3 abrasive grain was added into a mixing container.
  • At least one processing liquid was introduced to the grain.
  • about 5 lbs of liquid resin was added into the abrasive grain.
  • about 11 lbs of powder resin, about 6 lbs of PAF and about 10 lbs of pyrite were prepared in a separate mixing container. The mixture of the abrasive grain with the liquid resin was poured into the separate container to mix with the powder resin, PAF, and pyrite mixture.
  • the abrasive article was formed and tested in the same methods as a conventional abrasive article which has been mentioned above.
  • the dimension of the abrasive article in this example was 125 mm in diameter with 1 mm thickness. Its Relative G-Ratio was 1.6.
  • the resulting performance improvement was due to the fact that the thermal decomposition of the pyrite reduces the temperature at the interface of the abrasive grain and their surrounding organic bond, resulting in improved grain retention and a longer life.
  • an abrasive article was formed with the above-noted abrasive grain, but with different active fillers.
  • about 44 lbs of Al 2 O 3 —ZrO 2 abrasive grain blended with about 25 lbs of monocrystal Al 2 O 3 abrasive grain was added into a mixing container.
  • about 5 lbs of liquid resin was added into the abrasive grain.
  • PAF active filler
  • the mixture of the abrasive grain with the liquid resin was poured into that separate container to mix with powder resin and PAF mixture. Then the abrasive article was formed and tested in the same method as described in Example 1.
  • the dimension of the abrasive article in this example was 125 mm in diameter with 1 mm thickness.
  • the resulting Relative G-Ratio (compared with a conventional abrasive article at the same dimension) was 1.1.
  • the life of the abrasive article or grain retention did not improve in the same scale as in Example 1 because the endothermic reaction did not occur during the cutting operation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
US12/768,107 2009-04-30 2010-04-27 Abrasive article with improved grain retention and performance Abandoned US20110111678A1 (en)

Priority Applications (16)

Application Number Priority Date Filing Date Title
EP10150370.4A EP2177318B1 (en) 2009-04-30 2010-01-08 Abrasive article with improved grain retention and performance
US12/768,107 US20110111678A1 (en) 2009-04-30 2010-04-27 Abrasive article with improved grain retention and performance
AU2010241762A AU2010241762B2 (en) 2009-04-30 2010-04-28 Abrasive article with improved grain retention and performance
JP2012508616A JP2012525273A (ja) 2009-04-30 2010-04-28 向上した砥粒保持力及び性能を有する研磨物品
MX2011011383A MX2011011383A (es) 2009-04-30 2010-04-28 Articulo abrasivo con retencion de grano y comportamiento mejorados.
BRPI1014834A BRPI1014834A2 (pt) 2009-04-30 2010-04-28 artigo abrasivo com retenção de grao e desempenho aperfeiçoados
SG2011078896A SG175807A1 (en) 2009-04-30 2010-04-28 Abrasive article with improved grain retention and performance
CA2760208A CA2760208A1 (en) 2009-04-30 2010-04-28 Abrasive article with improved grain retention and performance
PCT/US2010/032659 WO2010126934A2 (en) 2009-04-30 2010-04-28 Abrasive article with improved grain retention and performance
KR1020117027918A KR101326032B1 (ko) 2009-04-30 2010-04-28 개선된 입자 보유성과 성능을 가지는 연마 물품
CN2010800245066A CN102470513A (zh) 2009-04-30 2010-04-28 有改进的颗粒保持力及性能的磨料物品
RU2011147732/02A RU2498892C2 (ru) 2009-04-30 2010-04-28 Отрезной круг
NZ596311A NZ596311A (en) 2009-04-30 2010-04-28 Abrasive article with improved grain retention and performance
IL215958A IL215958A0 (en) 2009-04-30 2011-10-26 Abrasive article with improved grain retention and performance
ZA2011/08220A ZA201108220B (en) 2009-04-30 2011-11-09 Abrasive article with improved grain retention and perfomance
CO11161972A CO6470829A2 (es) 2009-04-30 2011-11-25 Artículo abrasivo con retención de grano y comportamiento mejorados

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US17424009P 2009-04-30 2009-04-30
US12/768,107 US20110111678A1 (en) 2009-04-30 2010-04-27 Abrasive article with improved grain retention and performance

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US20110111678A1 true US20110111678A1 (en) 2011-05-12

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US12/768,107 Abandoned US20110111678A1 (en) 2009-04-30 2010-04-27 Abrasive article with improved grain retention and performance

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US (1) US20110111678A1 (ja)
EP (1) EP2177318B1 (ja)
JP (1) JP2012525273A (ja)
KR (1) KR101326032B1 (ja)
CN (1) CN102470513A (ja)
AU (1) AU2010241762B2 (ja)
BR (1) BRPI1014834A2 (ja)
CA (1) CA2760208A1 (ja)
CO (1) CO6470829A2 (ja)
IL (1) IL215958A0 (ja)
MX (1) MX2011011383A (ja)
NZ (1) NZ596311A (ja)
RU (1) RU2498892C2 (ja)
SG (1) SG175807A1 (ja)
WO (1) WO2010126934A2 (ja)
ZA (1) ZA201108220B (ja)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013184873A1 (en) * 2012-06-06 2013-12-12 Saint-Gobain Abrasives, Inc. Small diameter cutting tool
US20130337730A1 (en) * 2012-06-06 2013-12-19 Siddharth Srinivasan Large diameter cutting tool
US20140073230A1 (en) * 2012-08-28 2014-03-13 Kelley McNeal Large Diameter Cutting Tool
US20140378036A1 (en) * 2013-06-25 2014-12-25 Saint-Gobain Abrasives, Inc. Abrasive article and method of making same
CN104669134A (zh) * 2015-01-30 2015-06-03 洛阳希微磨料磨具有限公司 一种磨料砂轮的制备方法

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CN104742029B (zh) * 2013-12-31 2018-11-16 圣戈班磨料磨具有限公司 一种磨料磨具及制造方法
CN106799685B (zh) * 2017-01-25 2020-01-17 蓝思科技（长沙）有限公司 一种金刚石磨料磨具
CN109231970B (zh) * 2018-10-25 2021-06-08 河南东风新研材科技有限公司 一种纳米晶陶瓷刚玉磨料及其制备方法
CN110328623B (zh) * 2019-07-23 2021-06-01 广州奥拓夫精密智能制造有限公司 一种精密切削砂轮片

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WO2013184873A1 (en) * 2012-06-06 2013-12-12 Saint-Gobain Abrasives, Inc. Small diameter cutting tool
US20130337729A1 (en) * 2012-06-06 2013-12-19 Lingyu Li Small diameter cutting tool
US20130337730A1 (en) * 2012-06-06 2013-12-19 Siddharth Srinivasan Large diameter cutting tool
CN104364053A (zh) * 2012-06-06 2015-02-18 圣戈班磨料磨具有限公司 小直径切削工具
US20140073230A1 (en) * 2012-08-28 2014-03-13 Kelley McNeal Large Diameter Cutting Tool
US9138869B2 (en) * 2012-08-28 2015-09-22 Saint-Gobain Abrasives, Inc. Large diameter cutting tool
US20140378036A1 (en) * 2013-06-25 2014-12-25 Saint-Gobain Abrasives, Inc. Abrasive article and method of making same
CN104669134A (zh) * 2015-01-30 2015-06-03 洛阳希微磨料磨具有限公司 一种磨料砂轮的制备方法

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EP2177318A1 (en) 2010-04-21
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WO2010126934A2 (en) 2010-11-04
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