GB949187A - Procedure for secondary recrystallization - Google Patents

Procedure for secondary recrystallization

Info

Publication number
GB949187A
GB949187A GB22074/60A GB2207460A GB949187A GB 949187 A GB949187 A GB 949187A GB 22074/60 A GB22074/60 A GB 22074/60A GB 2207460 A GB2207460 A GB 2207460A GB 949187 A GB949187 A GB 949187A
Authority
GB
United Kingdom
Prior art keywords
sheet
secondary recrystallization
degrees
carbon
carried out
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
GB22074/60A
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.)
Armco Inc
Original Assignee
Armco Inc
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 Armco Inc filed Critical Armco Inc
Publication of GB949187A publication Critical patent/GB949187A/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
    • C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
    • C21D8/1233—Cold rolling
    • 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
    • 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
    • C21D8/1272—Final recrystallisation annealing
    • 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
    • C21D8/1277—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a particular surface 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)
  • Metal Rolling (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

In a process for the production of iron-silicon sheet in which the crystal orientation is such that a majority of the cube faces are within 5 degrees of parallelism with the surfaces of the sheet, a part at least of the final cold rolling is carried out using rolls giving a profilometer reading not greater than 10 micro inches, and the sheet is then given a secondary recrystallization treatment, e.g. in the range 1900-2300 DEG F.. The alloy may contain 2.5-4% silicon and less than 0.005% carbon, and the secondary recrystallization may be carried out in an atmosphere of non-oxidizing gas containing 20-250 p.p.m. of a polar compound selected from the oxides of carbon and sulphur and hydrogen sulphide. The final crystal structure may also be such that at least 70% of the cube edges are aligned within 20 degrees of the rolling direction. Specification 942,399 is referred to.
GB22074/60A 1959-07-06 1960-06-23 Procedure for secondary recrystallization Expired GB949187A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US824915A US3090711A (en) 1959-07-06 1959-07-06 Procedure for secondary recrystallization

Publications (1)

Publication Number Publication Date
GB949187A true GB949187A (en) 1964-02-12

Family

ID=25242633

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22074/60A Expired GB949187A (en) 1959-07-06 1960-06-23 Procedure for secondary recrystallization

Country Status (5)

Country Link
US (1) US3090711A (en)
BE (1) BE592471A (en)
CH (1) CH402031A (en)
DE (1) DE1273552B (en)
GB (1) GB949187A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1408973A1 (en) * 1960-02-16 1969-03-06 Moebius Dr Ing Hans Eberhard Process for obtaining a distinctive cube texture in sheets and strips made of soft silicon and / or aluminum-containing iron alloys
BE629681A (en) * 1962-03-19
US3347718A (en) * 1964-01-20 1967-10-17 Armco Steel Corp Method for improving the magnetic properties of ferrous sheets
US3389006A (en) * 1964-05-18 1968-06-18 Armco Steel Corp Process for forming a refractory coating on silicon-iron stock
US3333992A (en) * 1964-06-29 1967-08-01 Armco Steel Corp Production of oriented silicon-iron using grain growth inhibitor during primary recrystallization heat treatment
US3240638A (en) * 1964-10-21 1966-03-15 Westinghouse Electric Corp Use of silicon steel alloy having a critical sulfur range to insure cube-onface orientation
US3278348A (en) * 1965-01-28 1966-10-11 Westinghouse Electric Corp Process for producing doubly oriented cube-on-face magnetic sheet material
US3333993A (en) * 1965-04-02 1967-08-01 Armco Steel Corp Production of thin, oriented siliconiron wherein grain growth inhibitor is added to primary recrystallization heat treatment atmosphere as function of mn content and final thickness
US3415696A (en) * 1965-08-16 1968-12-10 Jones & Laughlin Steel Corp Process of producing silicon steel laminations having a very large grain size after final anneal
US3935038A (en) * 1971-10-28 1976-01-27 Nippon Steel Corporation Method for manufacturing non-oriented electrical steel sheet and strip having no ridging
KR840000668A (en) * 1981-08-24 1984-02-25 원본미기재 Method for producing oriented silicon steel with improved magnetic properties
JPH0674460B2 (en) * 1985-06-26 1994-09-21 日新製鋼株式会社 Magnetic steel sheet manufacturing method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2455632A (en) * 1946-12-17 1948-12-07 American Steel & Wire Co Silicon electrical steel
DE1009214B (en) * 1954-03-27 1957-05-29 Ver Deutsche Metallwerke Ag Process for creating a distinctive cube texture in magnetizable strips and sheets made of iron alloys containing silicon and / or aluminum
BE563546A (en) * 1956-12-31

Also Published As

Publication number Publication date
US3090711A (en) 1963-05-21
BE592471A (en) 1960-10-17
CH402031A (en) 1965-11-15
DE1273552B (en) 1968-07-25

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