EP 2634270 A4 20180117 - ANNEALING SEPARATION AGENT FOR PRODUCING GRAIN-ORIENTED SILICON STEEL WITH SMOOTH SURFACE AND GOOD MAGNETIC PROPERTY
Title (en)
ANNEALING SEPARATION AGENT FOR PRODUCING GRAIN-ORIENTED SILICON STEEL WITH SMOOTH SURFACE AND GOOD MAGNETIC PROPERTY
Title (de)
GLÜHTRENNMITTEL ZUR HERSTELLUNG EINES KORNORIENTIERTEN SILICIUMSTAHLS MIT GLATTER OBERFLÄCHE UND GUTEN MAGNETEIGENSCHAFTEN
Title (fr)
AGENT DE SÉPARATION DE RECUIT POUR LA PRODUCTION D'ACIER AU SILICIUM À GRAINS ORIENTÉS PRÉSENTANT UNE SURFACE LISSE ET UNE BONNE PROPRIÉTÉ MAGNÉTIQUE
Publication
Application
Priority
- CN 201010518037 A 20101025
- CN 2011072771 W 20110414
Abstract (en)
[origin: EP2634270A1] An annealing separator for manufacturing grain-oriented silicon steel with mirror-like surface having good magnetic performance consists of the composition of which is 77-98 by wt% of Al 2 O 3 powder, 1-8 by wt% of alkaline earth powder, 1ˆ¼15 by wt% of alkali metal chloride and/or alkaline earth metal chloride. The annealing separator of the invention can avoid forming a glass-film undercoating on the surface of the steel sheet during high-temperature annealing, and at the same time, the oxide embedded at near-surface of the sheet is removed by means of corrosive reaction of the chloride, so that a produce with smooth surface and stable magnetic performance is obtained.
IPC 8 full level
C21D 1/68 (2006.01); C21D 1/70 (2006.01); C21D 3/04 (2006.01); C21D 8/12 (2006.01)
CPC (source: EP KR US)
C21D 1/26 (2013.01 - EP US); C21D 1/68 (2013.01 - EP US); C21D 1/70 (2013.01 - EP KR US); C21D 3/04 (2013.01 - EP US); C21D 8/12 (2013.01 - EP KR US); C21D 9/46 (2013.01 - EP US); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP US); C22C 38/06 (2013.01 - EP US); C22C 38/16 (2013.01 - EP US); H01F 1/16 (2013.01 - EP KR US)
Citation (search report)
- [Y] US 2003188806 A1 20031009 - FUJII HIROYASU [JP], et al
- [Y] JP 2004277765 A 20041007 - JFE STEEL KK
- [Y] JP H05156362 A 19930622 - NIPPON STEEL CORP
- [A] EP 0305966 A1 19890308 - NIPPON STEEL CORP [JP]
- [A] US 5685920 A 19971111 - TANAKA OSAMU [JP], et al
- See references of WO 2012055214A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2634270 A1 20130904; EP 2634270 A4 20180117; EP 2634270 B1 20210602; CN 102453793 A 20120516; CN 102453793 B 20130925; JP 2013545892 A 20131226; JP 5650331 B2 20150107; KR 20130081297 A 20130716; MX 2013004592 A 20130717; MX 352637 B 20171201; RU 2013127583 A 20141227; RU 2552791 C2 20150610; US 2013292005 A1 20131107; WO 2012055214 A1 20120503
DOCDB simple family (application)
EP 11835488 A 20110414; CN 201010518037 A 20101025; CN 2011072771 W 20110414; JP 2013535244 A 20110414; KR 20137012552 A 20110414; MX 2013004592 A 20110414; RU 2013127583 A 20110414; US 201113880278 A 20110414