JPS5775205A - Manufacture of al-alloy sheet for use of magnetic disk substrate - Google Patents

Manufacture of al-alloy sheet for use of magnetic disk substrate

Info

Publication number
JPS5775205A
JPS5775205A JP15187580A JP15187580A JPS5775205A JP S5775205 A JPS5775205 A JP S5775205A JP 15187580 A JP15187580 A JP 15187580A JP 15187580 A JP15187580 A JP 15187580A JP S5775205 A JPS5775205 A JP S5775205A
Authority
JP
Japan
Prior art keywords
alloy sheet
manufacture
magnetic disk
disk substrate
subjected
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
Application number
JP15187580A
Other languages
Japanese (ja)
Other versions
JPS604263B2 (en
Inventor
Kozo Hoshino
Muneo Mizuno
Yoshihiro Mitsuta
Yoshihiro Tsuji
Yoshinobu Kitao
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel Ltd
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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP15187580A priority Critical patent/JPS604263B2/en
Publication of JPS5775205A publication Critical patent/JPS5775205A/en
Publication of JPS604263B2 publication Critical patent/JPS604263B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Metal Rolling (AREA)
  • Heat Treatment Of Nonferrous Metals Or Alloys (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)

Abstract

PURPOSE: To manufacture an Al-alloy sheet having a fine surface crystal structure for use of a magnetic dissubstrate, by properly selecting the adding amount of metallic additives, the casting condition, etc.
CONSTITUTION: A molten Al-alloy containig 3W6% Mg, 0.04W0.1% Cr, ≤0.08% Si, ≤0.1% Fe, ≤0.2% Mn, etc., is cast under a condition selected so as to make the mean cell size of dendrite, having a featherlike crystal structure with a uniform directionality and appearing at a position in the surface of a product, to ≤35μ. This cast ingot is, if possible, heated to about 450W560°C for 2W48hr in order to homogenize the material quality, and is then subjected to a hot rolling process with ≤ about 500°C starting temperatures; after which, the material is subjected to a cold rolling process. By the present treatment, an Al-alloy sheet with a high surface accuracy and a diminished surface defects, for use of a magnetic disk substrate, is obtained.
COPYRIGHT: (C)1982,JPO&Japio
JP15187580A 1980-10-28 1980-10-28 Manufacturing method of Al alloy plate for magnetic disk substrate Expired JPS604263B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15187580A JPS604263B2 (en) 1980-10-28 1980-10-28 Manufacturing method of Al alloy plate for magnetic disk substrate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15187580A JPS604263B2 (en) 1980-10-28 1980-10-28 Manufacturing method of Al alloy plate for magnetic disk substrate

Publications (2)

Publication Number Publication Date
JPS5775205A true JPS5775205A (en) 1982-05-11
JPS604263B2 JPS604263B2 (en) 1985-02-02

Family

ID=15528111

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15187580A Expired JPS604263B2 (en) 1980-10-28 1980-10-28 Manufacturing method of Al alloy plate for magnetic disk substrate

Country Status (1)

Country Link
JP (1) JPS604263B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6142730A (en) * 1984-08-02 1986-03-01 Kyocera Corp Substrate for magnetic disk
JPH09235640A (en) * 1996-02-28 1997-09-09 Furukawa Electric Co Ltd:The Aluminum alloy plate for magnetic disk substrate and manufacturing method thereof
JP2013112884A (en) * 2011-11-30 2013-06-10 Furukawa-Sky Aluminum Corp Aluminum alloy substrate and method for producing the same
RU2639258C2 (en) * 2016-03-16 2017-12-20 Федеральное государственное бюджетное научное учреждение "Федеральный научный агроинженерный центр ВИМ" (ФГБНУ ФНАЦ ВИМ) Addition alloy production method for steel boronizing
RU2723278C1 (en) * 2019-08-06 2020-06-09 Федеральное государственное бюджетное образовательное учреждение высшего образования "Алтайский государственный аграрный университет" (ФГБОУ ВО Алтайский ГАУ) Method of producing borated steels in induction furnaces

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0161165U (en) * 1987-10-15 1989-04-18

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6142730A (en) * 1984-08-02 1986-03-01 Kyocera Corp Substrate for magnetic disk
JPH09235640A (en) * 1996-02-28 1997-09-09 Furukawa Electric Co Ltd:The Aluminum alloy plate for magnetic disk substrate and manufacturing method thereof
JP2013112884A (en) * 2011-11-30 2013-06-10 Furukawa-Sky Aluminum Corp Aluminum alloy substrate and method for producing the same
RU2639258C2 (en) * 2016-03-16 2017-12-20 Федеральное государственное бюджетное научное учреждение "Федеральный научный агроинженерный центр ВИМ" (ФГБНУ ФНАЦ ВИМ) Addition alloy production method for steel boronizing
RU2723278C1 (en) * 2019-08-06 2020-06-09 Федеральное государственное бюджетное образовательное учреждение высшего образования "Алтайский государственный аграрный университет" (ФГБОУ ВО Алтайский ГАУ) Method of producing borated steels in induction furnaces

Also Published As

Publication number Publication date
JPS604263B2 (en) 1985-02-02

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