JPS5552522A - Manufacture of magnetic head core piece - Google Patents
Manufacture of magnetic head core pieceInfo
- Publication number
- JPS5552522A JPS5552522A JP12658378A JP12658378A JPS5552522A JP S5552522 A JPS5552522 A JP S5552522A JP 12658378 A JP12658378 A JP 12658378A JP 12658378 A JP12658378 A JP 12658378A JP S5552522 A JPS5552522 A JP S5552522A
- Authority
- JP
- Japan
- Prior art keywords
- core piece
- magnetic head
- heat treatment
- oxide coating
- manufacture
- 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
Links
Landscapes
- Magnetic Heads (AREA)
Abstract
PURPOSE: To obtain a magnetic head core piece excellent in resistance to wear by forming a Cr oxide coating on a core pipece of a Ni-Fe alloy including Cr by a specific heat treatment.
CONSTITUTION: On the surface of a core piece made of a Ni-Fe-Cr alloy (Cr-based Permalloy), a chromium oxide coating of more than 0.5μ in thickness is formed by magnetic annealing (e.g. in hydrogen of -70°C in dew point at 1100°C for three hours) and by a heat treatment of 700W1100°C in wet gas of 0W40°C in dew point (e.g. wet hydrogen). The above-mentioned method provides the formation of a chromium oxide coating only by a heat treatment, so that core pieces excellent in resistance to wear can be mass-produced at low cost.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53126583A JPS5822816B2 (en) | 1978-10-13 | 1978-10-13 | Method for manufacturing magnetic head core piece |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53126583A JPS5822816B2 (en) | 1978-10-13 | 1978-10-13 | Method for manufacturing magnetic head core piece |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5552522A true JPS5552522A (en) | 1980-04-17 |
JPS5822816B2 JPS5822816B2 (en) | 1983-05-11 |
Family
ID=14938759
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53126583A Expired JPS5822816B2 (en) | 1978-10-13 | 1978-10-13 | Method for manufacturing magnetic head core piece |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5822816B2 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50109613U (en) * | 1974-02-15 | 1975-09-08 | ||
JPS5210118A (en) * | 1975-07-14 | 1977-01-26 | Matsushita Electric Ind Co Ltd | Magnetic head and its manufacturing method |
-
1978
- 1978-10-13 JP JP53126583A patent/JPS5822816B2/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50109613U (en) * | 1974-02-15 | 1975-09-08 | ||
JPS5210118A (en) * | 1975-07-14 | 1977-01-26 | Matsushita Electric Ind Co Ltd | Magnetic head and its manufacturing method |
Also Published As
Publication number | Publication date |
---|---|
JPS5822816B2 (en) | 1983-05-11 |
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