GB589551A - Improvements in or relating to the heat treatment of silicon-iron alloys to reduce magnetostriction - Google Patents

Improvements in or relating to the heat treatment of silicon-iron alloys to reduce magnetostriction

Info

Publication number
GB589551A
GB589551A GB949344A GB949344A GB589551A GB 589551 A GB589551 A GB 589551A GB 949344 A GB949344 A GB 949344A GB 949344 A GB949344 A GB 949344A GB 589551 A GB589551 A GB 589551A
Authority
GB
United Kingdom
Prior art keywords
strip
reel
silicon
tension
relating
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.)
Expired
Application number
GB949344A
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.)
Westinghouse Electric International Co
Original Assignee
Westinghouse Electric International Co
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 Westinghouse Electric International Co filed Critical Westinghouse Electric International Co
Priority to GB949344A priority Critical patent/GB589551A/en
Publication of GB589551A publication Critical patent/GB589551A/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
    • C21D8/125—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 with application of tension

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

589,551. Heat-treating alloys. SHEPHERD, G. R. (Westinghouse Electric International Co.). May 17, 1944, No. 9493. [Class 72] To reduce the magneto-striction in a silicon iron alloy containing up to 6 per cent. of silicon and which has been fabricated in strip form and heat-treated to develop its magnetic properties, the strip is heated, e.g., for 1-2 minutes, at a temperature between the Curie point and 825‹C. preferably 700-825‹C., while applying tension to the strip, the tension being below the elastic limit of the strip, e.g., 500-2,000 lbs. per sq. in. After heating the strip is cooled, whilst still under tension, to a temperature of 90-110‹C., preferably 100‹C. The strip 12 is passed from a supply reel 14 to a winding reel 16 through an open-ended furnace 10, the predetermined tension being applied to the strip by a brake 18 which applies a suitable drag to the reel 14, and the reel 16 being far enough away from the furnace to enable the strip to cool down to as stated above before it is wound on the reel.
GB949344A 1944-05-17 1944-05-17 Improvements in or relating to the heat treatment of silicon-iron alloys to reduce magnetostriction Expired GB589551A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB949344A GB589551A (en) 1944-05-17 1944-05-17 Improvements in or relating to the heat treatment of silicon-iron alloys to reduce magnetostriction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB949344A GB589551A (en) 1944-05-17 1944-05-17 Improvements in or relating to the heat treatment of silicon-iron alloys to reduce magnetostriction

Publications (1)

Publication Number Publication Date
GB589551A true GB589551A (en) 1947-06-24

Family

ID=9873016

Family Applications (1)

Application Number Title Priority Date Filing Date
GB949344A Expired GB589551A (en) 1944-05-17 1944-05-17 Improvements in or relating to the heat treatment of silicon-iron alloys to reduce magnetostriction

Country Status (1)

Country Link
GB (1) GB589551A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0432732A2 (en) * 1989-12-11 1991-06-19 Armco Inc. Thermal flattening semi-processed electrical steel
CN103056205A (en) * 2013-01-08 2013-04-24 青岛云路新能源科技有限公司 Method for producing amorphous strip materials with low and stable magnetostriction coefficient

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0432732A2 (en) * 1989-12-11 1991-06-19 Armco Inc. Thermal flattening semi-processed electrical steel
EP0432732A3 (en) * 1989-12-11 1994-06-22 Armco Inc Thermal flattening semi-processed electrical steel
CN103056205A (en) * 2013-01-08 2013-04-24 青岛云路新能源科技有限公司 Method for producing amorphous strip materials with low and stable magnetostriction coefficient

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