EP0084980A3 - Non-oriented electrical steel sheet having a low watt loss and a high magnetic flux density and a process for producing the same - Google Patents

Non-oriented electrical steel sheet having a low watt loss and a high magnetic flux density and a process for producing the same Download PDF

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Publication number
EP0084980A3
EP0084980A3 EP83300393A EP83300393A EP0084980A3 EP 0084980 A3 EP0084980 A3 EP 0084980A3 EP 83300393 A EP83300393 A EP 83300393A EP 83300393 A EP83300393 A EP 83300393A EP 0084980 A3 EP0084980 A3 EP 0084980A3
Authority
EP
European Patent Office
Prior art keywords
oriented electrical
electrical steel
steel sheet
watt loss
flux density
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
EP83300393A
Other versions
EP0084980A2 (en
EP0084980B1 (en
Inventor
Kunisuke Process Technology R&D Labs. Miyoshi
Yoshiaki Yawata Works Shimoyama
Takeshi Process Technology R&D Labs. Kubota
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel 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
Priority claimed from JP57010211A external-priority patent/JPS58151453A/en
Priority claimed from JP58009398A external-priority patent/JPS59157259A/en
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Publication of EP0084980A2 publication Critical patent/EP0084980A2/en
Publication of EP0084980A3 publication Critical patent/EP0084980A3/en
Application granted granted Critical
Publication of EP0084980B1 publication Critical patent/EP0084980B1/en
Expired legal-status Critical Current

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
    • C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
    • C21D8/1261—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest following hot rolling
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/14766—Fe-Si based alloys
    • H01F1/14775—Fe-Si based alloys in the form of sheets

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Electromagnetism (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Power Engineering (AREA)
  • Soft Magnetic Materials (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)

Abstract

In the production of non-oriented electrical steel sheets, it has been attempted to decrese the watt loss, e.g. by adding Sn into silicon steels, but in such a case the relationship between the watt loss and magnetic flux density falls within the curves 1 and 1 min in Fig. 1. The addition of boron is therefore unsatisfactory for meeting the recent demands, for improving the magnetic properties of a non-oriented electrical steel sheet over those indicated by the curve 3. In the present invention, the combined addition Sn with B and/or sol. Al results in development of (110) and (100) textures which are desirable for the magnetic properties. A non-oriented electrical steel sheet according to the present invention, contains 0.015% of C at the highest, from 0.3 to 2.0% of Si, from 0.005 to 0.10% of sol. Al, from 0.02% to 0.20% of Sn, 0.007% of N at the highest, and 0.005% of B at the highest, the weight ratio of B content/N content being from 0.5 to 1.5, said non-oriented electrical sheet being produced by a process comprising an annealing of a hot-rolled steel strip. Instead of B, an appreciable amount of sol. Al may be contained in said sheet, when Mn content is from more than 1.0% to 1.5%.
EP83300393A 1982-01-27 1983-01-26 Non-oriented electrical steel sheet having a low watt loss and a high magnetic flux density and a process for producing the same Expired EP0084980B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP57010211A JPS58151453A (en) 1982-01-27 1982-01-27 Nondirectional electrical steel sheet with small iron loss and superior magnetic flux density and its manufacture
JP10211/82 1982-01-27
JP9398/83 1983-01-25
JP58009398A JPS59157259A (en) 1983-01-25 1983-01-25 Non-directional electrical sheet having low iron loss and excellent magnetic flux density and its production

Publications (3)

Publication Number Publication Date
EP0084980A2 EP0084980A2 (en) 1983-08-03
EP0084980A3 true EP0084980A3 (en) 1983-09-14
EP0084980B1 EP0084980B1 (en) 1986-01-08

Family

ID=26344111

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83300393A Expired EP0084980B1 (en) 1982-01-27 1983-01-26 Non-oriented electrical steel sheet having a low watt loss and a high magnetic flux density and a process for producing the same

Country Status (4)

Country Link
EP (1) EP0084980B1 (en)
AT (1) ATE17376T1 (en)
AU (2) AU551071B2 (en)
DE (1) DE3361738D1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0222442A (en) * 1988-07-12 1990-01-25 Nippon Steel Corp High tensile electrical steel sheet and its manufacture
JPH07116509B2 (en) * 1989-02-21 1995-12-13 日本鋼管株式会社 Non-oriented electrical steel sheet manufacturing method
JPH07116507B2 (en) * 1989-02-23 1995-12-13 日本鋼管株式会社 Non-oriented electrical steel sheet manufacturing method
JPH086135B2 (en) * 1991-04-25 1996-01-24 新日本製鐵株式会社 Manufacturing method of non-oriented electrical steel sheet with excellent magnetic properties
CZ284195B6 (en) * 1991-10-22 1998-09-16 Pohang Iron And Steel Co., Ltd. Non-oriented electric steel sheets and process for producing thereof
KR100345706B1 (en) * 1996-12-09 2002-09-18 주식회사 포스코 Non oriented electrical steel sheet having superior magnetic properties and manufacturing process thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2249957A1 (en) * 1973-10-31 1975-05-30 Kawasaki Steel Co
GB2005718A (en) * 1977-09-29 1979-04-25 Gen Electric Method of producing silicon- iron sheet material and product
EP0019849A1 (en) * 1979-05-30 1980-12-10 Kawasaki Steel Corporation Cold rolled non-oriented electrical steel sheet

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2249957A1 (en) * 1973-10-31 1975-05-30 Kawasaki Steel Co
GB2005718A (en) * 1977-09-29 1979-04-25 Gen Electric Method of producing silicon- iron sheet material and product
EP0019849A1 (en) * 1979-05-30 1980-12-10 Kawasaki Steel Corporation Cold rolled non-oriented electrical steel sheet

Also Published As

Publication number Publication date
ATE17376T1 (en) 1986-01-15
AU4568185A (en) 1985-11-07
DE3361738D1 (en) 1986-02-20
EP0084980A2 (en) 1983-08-03
AU551071B2 (en) 1986-04-17
AU1076583A (en) 1983-08-04
EP0084980B1 (en) 1986-01-08

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