IT1069068B - Grain oriented silicon steel annealing separator - based on magnesium oxide and contg. rare earth oxides or metal silicates - Google Patents

Grain oriented silicon steel annealing separator - based on magnesium oxide and contg. rare earth oxides or metal silicates

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Publication number
IT1069068B
IT1069068B IT4962576A IT4962576A IT1069068B IT 1069068 B IT1069068 B IT 1069068B IT 4962576 A IT4962576 A IT 4962576A IT 4962576 A IT4962576 A IT 4962576A IT 1069068 B IT1069068 B IT 1069068B
Authority
IT
Italy
Prior art keywords
rare earth
sheet
contg
grain oriented
magnesium oxide
Prior art date
Application number
IT4962576A
Other languages
Italian (it)
Inventor
Edmondo Marianeschi
Sandro Basevi
Mario Barisoni
Paolo Marini
Carlo Borgianni
Bitti Roberto Ricci
Original Assignee
Centro Speriment Metallurg
Terni Ind Elettr
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 Centro Speriment Metallurg, Terni Ind Elettr filed Critical Centro Speriment Metallurg
Priority to IT4962576A priority Critical patent/IT1069068B/en
Priority to BE6046014A priority patent/BE854833A/en
Priority to BG7736360A priority patent/BG39978A3/en
Priority to RO7790439A priority patent/RO71135A/en
Priority to GB21571/77A priority patent/GB1563853A/en
Priority to NO771781A priority patent/NO147035C/en
Priority to DE2723174A priority patent/DE2723174C2/en
Priority to FR7715632A priority patent/FR2352888A1/en
Priority to SE7706015A priority patent/SE439020B/en
Priority to DE19777716282U priority patent/DE7716282U1/en
Priority to LU77395A priority patent/LU77395A1/xx
Priority to DD7700199063A priority patent/DD130664A5/en
Priority to PL1977198370A priority patent/PL114517B1/en
Priority to JP5949477A priority patent/JPS534714A/en
Priority to CS343077A priority patent/CS207458B1/en
Priority to HU77CE1134A priority patent/HU181650B/en
Priority to ES459101A priority patent/ES459101A1/en
Priority to NL7705718A priority patent/NL7705718A/en
Application granted granted Critical
Publication of IT1069068B publication Critical patent/IT1069068B/en

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Abstract

An annealing separator for grain oriented Si steel sheets based on MgO contains in addn. oxides of rare earth metals, cpds. of rare earth metals which thermally decompose to oxides, or silicates. The separator economically improves the annealing operation and also improves the magnetic and electrical properties of the sheet. The surface of the annealed sheet has cavities contg. a glass film which affects the roughness and the resistivity. Rates of denitriding and desulphurisation are increased. The adhesion of vitreous films to the sheet is also increased. By reducing the roughness the drawability is improved, leading to improved magnetic properties. The final annealing time is reduced. In certain cases the additional insulating glass can be eliminated. There is also fewer problems when mechanically treating the sheet.
IT4962576A 1976-05-24 1976-05-24 Grain oriented silicon steel annealing separator - based on magnesium oxide and contg. rare earth oxides or metal silicates IT1069068B (en)

Priority Applications (18)

Application Number Priority Date Filing Date Title
IT4962576A IT1069068B (en) 1976-05-24 1976-05-24 Grain oriented silicon steel annealing separator - based on magnesium oxide and contg. rare earth oxides or metal silicates
BE6046014A BE854833A (en) 1976-05-24 1977-05-18 Annealing separator
BG7736360A BG39978A3 (en) 1976-05-24 1977-05-19 Composition of diluting agent for annealing
DE19777716282U DE7716282U1 (en) 1976-05-24 1977-05-23 GRAIN-ORIENTED SILICON STEEL TAPE
NO771781A NO147035C (en) 1976-05-24 1977-05-23 MAGNESIUM OXIDE BASE GLASS SEPARATOR AND USE OF SAME
DE2723174A DE2723174C2 (en) 1976-05-24 1977-05-23 Annealing separator for grain-oriented silicon steel strips
FR7715632A FR2352888A1 (en) 1976-05-24 1977-05-23 Annealing separator
SE7706015A SE439020B (en) 1976-05-24 1977-05-23 annealing
RO7790439A RO71135A (en) 1976-05-24 1977-05-23 MATERIAL FOR COVERING SEMIFABRICATES OF FIRE-SILICON ALIENS
LU77395A LU77395A1 (en) 1976-05-24 1977-05-23
DD7700199063A DD130664A5 (en) 1976-05-24 1977-05-23 RELEASE AGENT FOR GLOWING HISTORIZED CORNORIENTED SILICON STEEL STRIP
GB21571/77A GB1563853A (en) 1976-05-24 1977-05-23 Annealing separators
PL1977198370A PL114517B1 (en) 1976-05-24 1977-05-24 Annealing separator
JP5949477A JPS534714A (en) 1976-05-24 1977-05-24 Annealing separating agent
CS343077A CS207458B1 (en) 1976-05-24 1977-05-24 annealing separator
HU77CE1134A HU181650B (en) 1976-05-24 1977-05-24 Separating agent for heat treating textured silicon steel hands
ES459101A ES459101A1 (en) 1976-05-24 1977-05-24 Annealing separators
NL7705718A NL7705718A (en) 1976-05-24 1977-05-24 PROCESS FOR THE PREPARATION OF A RELIEF DETERMINANT.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT4962576A IT1069068B (en) 1976-05-24 1976-05-24 Grain oriented silicon steel annealing separator - based on magnesium oxide and contg. rare earth oxides or metal silicates

Publications (1)

Publication Number Publication Date
IT1069068B true IT1069068B (en) 1985-03-25

Family

ID=11271194

Family Applications (1)

Application Number Title Priority Date Filing Date
IT4962576A IT1069068B (en) 1976-05-24 1976-05-24 Grain oriented silicon steel annealing separator - based on magnesium oxide and contg. rare earth oxides or metal silicates

Country Status (1)

Country Link
IT (1) IT1069068B (en)

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