JPS57192222A - Treatment of electromagnetic steel sheet - Google Patents
Treatment of electromagnetic steel sheetInfo
- Publication number
- JPS57192222A JPS57192222A JP7424781A JP7424781A JPS57192222A JP S57192222 A JPS57192222 A JP S57192222A JP 7424781 A JP7424781 A JP 7424781A JP 7424781 A JP7424781 A JP 7424781A JP S57192222 A JPS57192222 A JP S57192222A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- electromagnetic steel
- laser
- irradiated
- effect
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1294—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a localized treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Soft Magnetic Materials (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
PURPOSE:To obtain an electromagnetic steel sheet having a magnetic property and an insulating property under a stable condition, while raising an iron loss- improving effect, by forming a tension film on one surface of the electromagnetic steel sheet, irradiating laser beams to the other surface, and then coating the other surface with an insulating film at a proper temperature. CONSTITUTION:A tension film is formed on only one surface of an electromagnetic steel sheet in a proper manner. Laser beams are then irradiated to the other surface to form laser-irradiated marks. An insulating film is applied to the laser-irradiated surface in a temperature range not to eliminate the laser-irradiating effect, e.g. under the condition that the temperature of the sheet is held below 600 deg.C. According to this method, an iron loss-improving effect is obtained by the conjunct effect of the tension film and the laser irradiation, and the electromagnetic steel sheet, excellent in its insulating property, voltage-withstanding property, corrosion-resistace, adhesiveness and space factor ratio, is obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7424781A JPS5836052B2 (en) | 1981-05-19 | 1981-05-19 | Processing method for electrical steel sheets |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7424781A JPS5836052B2 (en) | 1981-05-19 | 1981-05-19 | Processing method for electrical steel sheets |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57192222A true JPS57192222A (en) | 1982-11-26 |
JPS5836052B2 JPS5836052B2 (en) | 1983-08-06 |
Family
ID=13541635
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7424781A Expired JPS5836052B2 (en) | 1981-05-19 | 1981-05-19 | Processing method for electrical steel sheets |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5836052B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61253380A (en) * | 1985-05-02 | 1986-11-11 | Nippon Steel Corp | Production of low iron loss grain oriented electrical steel sheet |
-
1981
- 1981-05-19 JP JP7424781A patent/JPS5836052B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61253380A (en) * | 1985-05-02 | 1986-11-11 | Nippon Steel Corp | Production of low iron loss grain oriented electrical steel sheet |
Also Published As
Publication number | Publication date |
---|---|
JPS5836052B2 (en) | 1983-08-06 |
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