JPS5698461A - Manufacture of al alloy plate for magnetic disk - Google Patents
Manufacture of al alloy plate for magnetic diskInfo
- Publication number
- JPS5698461A JPS5698461A JP105580A JP105580A JPS5698461A JP S5698461 A JPS5698461 A JP S5698461A JP 105580 A JP105580 A JP 105580A JP 105580 A JP105580 A JP 105580A JP S5698461 A JPS5698461 A JP S5698461A
- Authority
- JP
- Japan
- Prior art keywords
- ingot
- rolling
- alloy
- manufacture
- alloy plate
- 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.)
- Pending
Links
Landscapes
- Heat Treatment Of Nonferrous Metals Or Alloys (AREA)
- Magnetic Record Carriers (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
PURPOSE: To produce the titled alloy plate which provides a disk base plate excellent in smoothness by rolling under predetermined conditions an ingot of an Al- based alloy containing specified component ratios of Mg, Cr, Ti and the like.
CONSTITUTION: The ingot of the Al-alloy is produced, the alloy containing 3W6% of Mg, 0.03W0.1% of Cr and 0.03W0.08% as indispensable constituents, wherein Mn is not more than 0.4% Fe, not more than 0.1% Si not more than 0.1%, Zn not more than 0.25%, Cu not more than 0.1% and B not more than 0.01%. The ingot is soaked at 420W500°C for 1W10hr, followed by hot breakdown rolling at a reducing rate of 30W70%. After a further soaking treatment at 500W560°C for 3W24hr, hot finish rolling and cold rolling are conducted to obtain a desired plate thickness, thereby obtaining the Al-based alloy which contains fine crystallizates uniformly dispersed in a matrix and is free of microsegregation.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP105580A JPS5698461A (en) | 1980-01-08 | 1980-01-08 | Manufacture of al alloy plate for magnetic disk |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP105580A JPS5698461A (en) | 1980-01-08 | 1980-01-08 | Manufacture of al alloy plate for magnetic disk |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5698461A true JPS5698461A (en) | 1981-08-07 |
Family
ID=11490851
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP105580A Pending JPS5698461A (en) | 1980-01-08 | 1980-01-08 | Manufacture of al alloy plate for magnetic disk |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5698461A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59193538A (en) * | 1983-04-18 | 1984-11-02 | Mitsubishi Alum Co Ltd | Al alloy for substrate of magnetic disk |
JPS59193539A (en) * | 1983-04-18 | 1984-11-02 | Mitsubishi Alum Co Ltd | Al alloy for substrate of magnetic disk |
JPS61246340A (en) * | 1985-04-24 | 1986-11-01 | Sky Alum Co Ltd | Aluminum alloy for magnetic disk |
JPS62133038A (en) * | 1985-12-04 | 1987-06-16 | Showa Alum Corp | Aluminum alloy having superior machinability to mirror finished surface |
JPS62230948A (en) * | 1986-03-31 | 1987-10-09 | Sumitomo Light Metal Ind Ltd | Aluminum alloy for magnetic disk |
JPS6362853A (en) * | 1986-09-02 | 1988-03-19 | Kobe Steel Ltd | Manufacture of material for magnetic disk substrate |
JPH0297639A (en) * | 1988-09-30 | 1990-04-10 | Furukawa Alum Co Ltd | Aluminum alloy for magnetic disk substrate having excellent platability |
US5244516A (en) * | 1988-10-18 | 1993-09-14 | Kabushiki Kaisha Kobe Seiko Sho | Aluminum alloy plate for discs with improved platability and process for producing the same |
-
1980
- 1980-01-08 JP JP105580A patent/JPS5698461A/en active Pending
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59193538A (en) * | 1983-04-18 | 1984-11-02 | Mitsubishi Alum Co Ltd | Al alloy for substrate of magnetic disk |
JPS59193539A (en) * | 1983-04-18 | 1984-11-02 | Mitsubishi Alum Co Ltd | Al alloy for substrate of magnetic disk |
JPH0315259B2 (en) * | 1983-04-18 | 1991-02-28 | Mitsubishi Aluminium | |
JPH0316689B2 (en) * | 1983-04-18 | 1991-03-06 | Mitsubishi Aluminium | |
JPS61246340A (en) * | 1985-04-24 | 1986-11-01 | Sky Alum Co Ltd | Aluminum alloy for magnetic disk |
JPS62133038A (en) * | 1985-12-04 | 1987-06-16 | Showa Alum Corp | Aluminum alloy having superior machinability to mirror finished surface |
JPS62230948A (en) * | 1986-03-31 | 1987-10-09 | Sumitomo Light Metal Ind Ltd | Aluminum alloy for magnetic disk |
JPS6362853A (en) * | 1986-09-02 | 1988-03-19 | Kobe Steel Ltd | Manufacture of material for magnetic disk substrate |
JPH0297639A (en) * | 1988-09-30 | 1990-04-10 | Furukawa Alum Co Ltd | Aluminum alloy for magnetic disk substrate having excellent platability |
JPH0545659B2 (en) * | 1988-09-30 | 1993-07-09 | Furukawa Aluminium | |
US5244516A (en) * | 1988-10-18 | 1993-09-14 | Kabushiki Kaisha Kobe Seiko Sho | Aluminum alloy plate for discs with improved platability and process for producing the same |
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