MY183852A - Method for manufacturing magnetic-disk glass substrate and method for manufacturing magnetic disk - Google Patents

Method for manufacturing magnetic-disk glass substrate and method for manufacturing magnetic disk

Info

Publication number
MY183852A
MY183852A MYPI2016701745A MYPI2016701745A MY183852A MY 183852 A MY183852 A MY 183852A MY PI2016701745 A MYPI2016701745 A MY PI2016701745A MY PI2016701745 A MYPI2016701745 A MY PI2016701745A MY 183852 A MY183852 A MY 183852A
Authority
MY
Malaysia
Prior art keywords
polishing
glass substrate
manufacturing magnetic
disk
main surfaces
Prior art date
Application number
MYPI2016701745A
Inventor
Hideo Sakai
Original Assignee
Hoya Corp
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
Application filed by Hoya Corp filed Critical Hoya Corp
Publication of MY183852A publication Critical patent/MY183852A/en

Links

Classifications

    • 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
    • B24B57/00—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents
    • B24B57/02—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents for feeding of fluid, sprayed, pulverised, or liquefied grinding, polishing or lapping agents
    • 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
    • B24B37/00—Lapping machines or devices; Accessories
    • B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces
    • B24B37/042—Lapping machines or devices; Accessories designed for working plane surfaces operating processes therefor
    • B24B37/044—Lapping machines or devices; Accessories designed for working plane surfaces operating processes therefor characterised by the composition of the lapping agent
    • 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
    • B24B37/00—Lapping machines or devices; Accessories
    • B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces
    • B24B37/07—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool
    • B24B37/08—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool for double side lapping
    • 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
    • C09K3/1454—Abrasive powders, suspensions and pastes for polishing
    • C09K3/1463—Aqueous liquid suspensions
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/8404—Processes or apparatus specially adapted for manufacturing record carriers manufacturing base layers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

A method for manufacturing a magnetic-disk glass substrate includes a polishing processing for polishing main surfaces on both sides of a glass substrate by pressing polishing pads against the main surfaces and moving the main surfaces and the polishing pads relative to each other while supplying a polishing slurry containing colloidal silica as polishing abrasive particles between the glass substrate and the polishing pads.The polishing slurry is producedby, before the main surfaces are polished, adjusting an original polishing slurry that serves as a basis of the polishing slurry to be used in the polishing processing to an acid state and removing, through filter processing,a silica deposit from the original polishing slurry generated by adjusting the original polishing slurry to the acid state. [FIG. 1]
MYPI2016701745A 2013-11-15 2014-11-17 Method for manufacturing magnetic-disk glass substrate and method for manufacturing magnetic disk MY183852A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013236491 2013-11-15
PCT/JP2014/080373 WO2015072569A1 (en) 2013-11-15 2014-11-17 Method for manufacturing glass substrate for magnetic disk and method for manufacturing magnetic disk

Publications (1)

Publication Number Publication Date
MY183852A true MY183852A (en) 2021-03-17

Family

ID=53057501

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI2016701745A MY183852A (en) 2013-11-15 2014-11-17 Method for manufacturing magnetic-disk glass substrate and method for manufacturing magnetic disk

Country Status (4)

Country Link
JP (1) JP6280561B2 (en)
CN (1) CN105745708B (en)
MY (1) MY183852A (en)
WO (1) WO2015072569A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108747661A (en) * 2018-06-28 2018-11-06 湖北晶润电子科技有限公司 A kind of glass sander

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007098485A (en) * 2005-09-30 2007-04-19 Hoya Glass Disk Thailand Ltd Glass substrate for magnetic record medium and manufacturing method of magnetic disk
DE102007008232A1 (en) * 2007-02-20 2008-08-21 Evonik Degussa Gmbh Dispersion containing ceria and colloidal silica
JP5698989B2 (en) * 2011-01-07 2015-04-08 花王株式会社 Method for producing polishing composition
US20130183889A1 (en) * 2010-09-24 2013-07-18 Kao Corporation Process for producing polishing liquid composition
WO2012090426A1 (en) * 2010-12-27 2012-07-05 コニカミノルタオプト株式会社 Method of manufacturing a glass substrate for a hard disk
JP5673957B2 (en) * 2011-10-27 2015-02-18 日産化学工業株式会社 Porous secondary agglomerated silica sol and method for producing the same
MY168569A (en) * 2011-12-30 2018-11-13 Hoya Corp Method of manufacturing a substrate, method of manufacturing a magnetic disk glass substrate and method of manufacturing a magnetic disk

Also Published As

Publication number Publication date
JP6280561B2 (en) 2018-02-14
CN105745708B (en) 2019-03-19
JPWO2015072569A1 (en) 2017-03-16
WO2015072569A1 (en) 2015-05-21
CN105745708A (en) 2016-07-06

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