BR0008061A - Grãos abrasivos constituìdos de alumina policristalina - Google Patents

Grãos abrasivos constituìdos de alumina policristalina

Info

Publication number
BR0008061A
BR0008061A BR0008061-6A BR0008061A BR0008061A BR 0008061 A BR0008061 A BR 0008061A BR 0008061 A BR0008061 A BR 0008061A BR 0008061 A BR0008061 A BR 0008061A
Authority
BR
Brazil
Prior art keywords
alumina
abrasive grains
less
melting
manufacture
Prior art date
Application number
BR0008061-6A
Other languages
English (en)
Other versions
BR0008061B1 (pt
Inventor
Jean-Andre Alary
Original Assignee
Pem Abrasifs Refractaires
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9542171&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BR0008061(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Pem Abrasifs Refractaires filed Critical Pem Abrasifs Refractaires
Publication of BR0008061A publication Critical patent/BR0008061A/pt
Publication of BR0008061B1 publication Critical patent/BR0008061B1/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/14—Anti-slip materials; Abrasives
    • C09K3/1409—Abrasive particles per se
    • C09K3/1427—Abrasive particles per se obtained by division of a mass agglomerated by melting, at least partially, e.g. with a binder
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/021—After-treatment of oxides or hydroxides
    • C01F7/027—Treatment involving fusion or vaporisation
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/01—Particle morphology depicted by an image
    • C01P2004/04—Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
    • C01P2004/22—Particle morphology extending in two dimensions, e.g. plate-like with a polygonal circumferential shape
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/30—Particle morphology extending in three dimensions
    • C01P2004/32—Spheres
    • C01P2004/34—Spheres hollow
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/30—Particle morphology extending in three dimensions
    • C01P2004/38—Particle morphology extending in three dimensions cube-like
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Materials Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Materials For Medical Uses (AREA)
  • Glass Compositions (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

Patente de Invenção: "GRãOS ABRASIVOS CONSTITUìDOS DE ALUMINA POLICRISTALINA". A invenção refere-se a um grão abrasivo à base de alumina eletrofundida constituído de cristais de estrutura hexagonal, de dimensão inferior a 100 <109>m e de preferência, a 30 <109>m e mais preferencialmente a 5 <109>m com uma densidade superior a 97 %, de preferência 98 %, da densidade teórica da alumina, e uma dureza Knoop superior a 2000. A invenção tem igualmente por objetivo um processo de fabricação de grãos abrasivos à base de alumina comportando a fusão da alumina, sua fundição com vazão constante inferior a 80 kg/min, e seu resfriamento por dispersão da alumina fundida em finas gotículas par dar partículas de tamanho inferior a 1 mm. Essa dispersão se faz, de preferência, por atomização assistida por ultra-sons, de freq³ência compreendida entre 15 e 50 MHz. Os grãos abrasivos, de acordo com a invenção, são utilizados notadamente na fabricação de rebolos.
BRPI0008061-6A 1999-02-15 2000-02-09 processo de fabricação de grãos abrasivos à base de alumina eletrofundida. BR0008061B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9901962A FR2789688B1 (fr) 1999-02-15 1999-02-15 Grains abrasifs constitues d'alumine polycristalline
PCT/FR2000/000299 WO2000047688A1 (fr) 1999-02-15 2000-02-09 Grains abrasifs constitues d'alumine polycristalline

Publications (2)

Publication Number Publication Date
BR0008061A true BR0008061A (pt) 2001-11-06
BR0008061B1 BR0008061B1 (pt) 2011-11-01

Family

ID=9542171

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0008061-6A BR0008061B1 (pt) 1999-02-15 2000-02-09 processo de fabricação de grãos abrasivos à base de alumina eletrofundida.

Country Status (18)

Country Link
US (2) US6613114B1 (pt)
EP (1) EP1157077B2 (pt)
JP (1) JP4102030B2 (pt)
KR (1) KR100561500B1 (pt)
AT (1) ATE222281T1 (pt)
AU (1) AU2554200A (pt)
BR (1) BR0008061B1 (pt)
CZ (1) CZ293931B6 (pt)
DE (1) DE60000334T3 (pt)
DK (1) DK1157077T4 (pt)
ES (1) ES2181641T5 (pt)
FR (1) FR2789688B1 (pt)
PL (1) PL198509B1 (pt)
PT (1) PT1157077E (pt)
SI (1) SI1157077T2 (pt)
SK (1) SK285629B6 (pt)
TW (1) TW526258B (pt)
WO (1) WO2000047688A1 (pt)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2789688B1 (fr) * 1999-02-15 2001-03-23 Pem Abrasifs Refractaires Grains abrasifs constitues d'alumine polycristalline
CA2579202A1 (en) * 2004-09-10 2006-03-16 Element Six Limited High density abrasive compacts
RU2321542C2 (ru) * 2005-02-07 2008-04-10 Александр Васильевич Толчев Способ получения абразивных микропорошков на основе корунда
DE102005045180B4 (de) 2005-09-21 2007-11-15 Center For Abrasives And Refractories Research & Development C.A.R.R.D. Gmbh Kugelförmige Korundkörner auf Basis von geschmolzenem Aluminiumoxid sowie ein Verfahren zu ihrer Herstellung
DE102006020362A1 (de) 2006-04-28 2007-10-31 Center For Abrasives And Refractories Research & Development C.A.R.R.D. Gmbh Schleifkorn auf Basis von geschmolzenem Kugelkorund
WO2008047253A2 (en) * 2006-08-18 2008-04-24 Imerys Electrofused proppant, method of manufacture, and method of use
US8562900B2 (en) * 2006-09-01 2013-10-22 Imerys Method of manufacturing and using rod-shaped proppants and anti-flowback additives
GB2441613B (en) * 2007-07-26 2008-09-03 Chao Shu Au Aircraft storage and ejection arrangement
DE102010047095A1 (de) 2010-10-01 2012-04-05 Center For Abrasives And Refractories Research & Development C.A.R.R.D. Gmbh Polykristalline Al2O3-Körper auf Basis von geschmolzenem Aluminiumoxid
EP2570398A1 (de) * 2011-09-15 2013-03-20 GTP-Schäfer Giesstechnische Produkte GmbH Nichtsilikogenes mineralisches Strahlmittel
JP6183073B2 (ja) * 2013-08-31 2017-08-23 大同特殊鋼株式会社 アーク炉

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1192709A (en) * 1914-12-01 1916-07-25 Carborundum Co Crystalline fused alumina and the manufacture thereof.
US1798261A (en) * 1925-12-04 1931-03-31 Aluminum Co Of America Purifying alumina
US1871793A (en) * 1925-03-02 1932-08-16 Aluminum Co Of America Purified metallic oxide
US1871792A (en) * 1925-03-02 1932-08-16 Aluminum Co Of America Treatment of metallic oxides
US1704599A (en) * 1926-05-08 1929-03-05 Metallgesellschaft Ag Disintegrated alumina
GB284131A (en) * 1927-06-07 1928-01-26 Metallbank & Metallurg Ges Ag Process of disintegrating liquid alumina
US3181939A (en) * 1961-01-27 1965-05-04 Norton Co Fused alumina-zirconia abrasives
FR1319102A (fr) * 1962-04-04 1963-02-22 Norton Co Procédé et appareil pour la production d'abrasifs à grain fin et abrasifs ainsi obtenus
US3781172A (en) * 1970-12-14 1973-12-25 G Kinney Process for the manufacture of microcrystalline fused abrasives
GB1595196A (en) * 1978-05-26 1981-08-12 Carborundum Co Ltd Solidification of molten material
DE3827898A1 (de) * 1988-08-17 1990-02-22 Degussa (alpha)-aluminiumoxid, sowie verfahren zur herstellung von (alpha)-aluminiumoxid
WO1990008744A1 (fr) * 1989-02-01 1990-08-09 Showa Denko Kabushiki Kaisha Ceramique d'oxyde d'aluminium, matiere abrasive et leur production
FR2789688B1 (fr) * 1999-02-15 2001-03-23 Pem Abrasifs Refractaires Grains abrasifs constitues d'alumine polycristalline

Also Published As

Publication number Publication date
FR2789688B1 (fr) 2001-03-23
FR2789688A1 (fr) 2000-08-18
ES2181641T3 (es) 2003-03-01
CZ20012894A3 (cs) 2001-12-12
SI1157077T1 (en) 2003-04-30
CZ293931B6 (cs) 2004-08-18
ATE222281T1 (de) 2002-08-15
DE60000334T2 (de) 2003-04-17
EP1157077A1 (fr) 2001-11-28
DK1157077T3 (da) 2002-12-16
PL355167A1 (en) 2004-04-05
KR100561500B1 (ko) 2006-03-17
SI1157077T2 (sl) 2006-08-31
SK285629B6 (sk) 2007-05-03
ES2181641T5 (es) 2006-07-16
DE60000334T3 (de) 2006-09-14
AU2554200A (en) 2000-08-29
SK10752001A3 (sk) 2002-01-07
US20040093804A1 (en) 2004-05-20
BR0008061B1 (pt) 2011-11-01
US6613114B1 (en) 2003-09-02
DK1157077T4 (da) 2006-06-06
PT1157077E (pt) 2003-01-31
WO2000047688A1 (fr) 2000-08-17
EP1157077B2 (fr) 2006-02-01
DE60000334D1 (de) 2002-09-19
TW526258B (en) 2003-04-01
PL198509B1 (pl) 2008-06-30
KR20010109291A (ko) 2001-12-08
JP2003508547A (ja) 2003-03-04
JP4102030B2 (ja) 2008-06-18
EP1157077B1 (fr) 2002-08-14

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Legal Events

Date Code Title Description
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 01/11/2011, OBSERVADAS AS CONDICOES LEGAIS.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE A 21A ANUIDADE.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2617 DE 02-03-2021 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.