GB1356342A - Process for the manufacture of intermediate products - Google Patents

Process for the manufacture of intermediate products

Info

Publication number
GB1356342A
GB1356342A GB1409871*[A GB1409871A GB1356342A GB 1356342 A GB1356342 A GB 1356342A GB 1409871 A GB1409871 A GB 1409871A GB 1356342 A GB1356342 A GB 1356342A
Authority
GB
United Kingdom
Prior art keywords
hot
worked
descaled
reheated
cold
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
GB1409871*[A
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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 Mannesmann AG filed Critical Mannesmann AG
Publication of GB1356342A publication Critical patent/GB1356342A/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
    • C21D8/1227—Warm 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

Abstract

1356342 Making sheet and foil; working at specified temperatures MANNESMANN AG 10 May 1971 [11 May 1970] 14098/71 Headings B3A and B3V [Also in Division C7] An ingot of silicon-iron alloy containing, by weight, 4À5-7À5% Si is hot-worked above 650‹ C. and the resulting product warm-worked in the range 650-350‹ C. so as to provide an intermediate product which can be cold-worked, avoiding raising the temperature above 350‹ C. In an example the hot ingot having a nitrogen content greater than 0À004% is stripped, inserted in a furnace at 650-700‹ C., heated to 1100‹ C., removed and descaled. It is then hotrolled with an end temperature up to 750‹ C. and the plate hot-divided and descaled at ambient temperature. Five mm. plates were then reheated to 650‹ C. and kept for at least one hour, and preferably from 3-7 hours, at 650‹ C. Further rolling followed during cooling in 15-20 passes down to a plate thickness of 1À5 mm. Alternatively, thicker plates (up to 8 mm.) were reheated to 850-900‹ C. and again hot-rolled, with intermediate heating at 870‹ C., down to 3À5-1À75 mm. Warm-rolling followed, and then cold-rolling down to below 1 mm. Plate thicknesses down to 0À03 mm. are referred to. Final annealing for magnetic properties is effected after working and blanking steps.
GB1409871*[A 1970-05-11 1971-05-10 Process for the manufacture of intermediate products Expired GB1356342A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2024525 1970-05-11

Publications (1)

Publication Number Publication Date
GB1356342A true GB1356342A (en) 1974-06-12

Family

ID=5771535

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1409871*[A Expired GB1356342A (en) 1970-05-11 1971-05-10 Process for the manufacture of intermediate products

Country Status (6)

Country Link
US (1) US3874954A (en)
BE (1) BE766995A (en)
CA (1) CA948529A (en)
DE (1) DE2024525B1 (en)
FR (1) FR2091679A5 (en)
GB (1) GB1356342A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3843422A (en) * 1972-03-30 1974-10-22 R Henke Rolling method for producing silicon steel strip
JPS6179724A (en) * 1984-09-28 1986-04-23 Nippon Kokan Kk <Nkk> Manufacture of thin plate of high-silicon iron alloy
JPS62103321A (en) * 1985-06-14 1987-05-13 Nippon Kokan Kk <Nkk> Manufacture of silicon steel sheet having superior soft magnetic characteristic

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1739126A (en) * 1927-07-27 1929-12-10 Allegheny Steel Co Method of making ductile high-silicon-steel sheets
US1852836A (en) * 1928-05-09 1932-04-05 Duriron Co Process of treating iron-silicon alloys
US1898061A (en) * 1929-09-27 1933-02-21 Allegheny Steel Co Treatment of electrical sheet steels
US1912129A (en) * 1930-12-05 1933-05-30 Allegheny Steel Co Treatment of silicon steel
US1992039A (en) * 1932-02-15 1935-02-19 Youngstown Sheet And Tube Co Method of producing high silicon steel articles
US2113537A (en) * 1935-10-29 1938-04-05 Heraeus Vacuumschmeise A G Method of rolling and treating silicon steel
US2088440A (en) * 1936-08-24 1937-07-27 Gen Electric Magnetic sheet steel and process for making the same
US2209686A (en) * 1938-07-25 1940-07-30 Electro Metallurg Co Sheared electrical steel sheet
US2235532A (en) * 1938-09-29 1941-03-18 Gen Electric Method for shearing normally brittle sheet metal
US2765246A (en) * 1955-01-25 1956-10-02 Allegheny Ludlum Steel Process of treating silicon iron strip
US3147157A (en) * 1958-05-26 1964-09-01 Gen Electric Fabrication of magnetic material
US3144363A (en) * 1961-12-14 1964-08-11 Westinghouse Electric Corp Process for producing oriented silicon steel and the product thereof
US3165428A (en) * 1962-12-27 1965-01-12 Westinghouse Electric Corp Production of thin goss oriented magnetic materials
DE1458852A1 (en) * 1965-05-19 1969-04-30 Maximilianshuette Eisenwerk Process for producing non-aging electrical steel
US3671337A (en) * 1969-02-21 1972-06-20 Nippon Steel Corp Process for producing grain oriented electromagnetic steel sheets having excellent magnetic characteristics

Also Published As

Publication number Publication date
FR2091679A5 (en) 1972-01-14
CA948529A (en) 1974-06-04
BE766995A (en) 1971-10-01
US3874954A (en) 1975-04-01
DE2024525B1 (en) 1971-12-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee