TREATMENT SOLUTION FOR CHROMIUM-FREE INSULATING COATING FOR GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND GRAIN-ORIENTED ELECTRICAL STEEL SHEET COATED WITH CHROMIUM-FREE INSULATING COATING
    9.
    发明公开
    TREATMENT SOLUTION FOR CHROMIUM-FREE INSULATING COATING FOR GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND GRAIN-ORIENTED ELECTRICAL STEEL SHEET COATED WITH CHROMIUM-FREE INSULATING COATING 审中-公开
    BEHANDLUNGSLÖSUNGFÜRCHROMFREIE ISOLIERBESCHICHTUNGFÜRKORNORIENTIERTES ELEKTROSTAHLBLECHE UND KORNORIENTIERTES ELEKTROSTAHLBLECH MIT CHROMFREIER ISOLIERBESCHICHTUNG

    公开(公告)号:EP3135793A4

    公开(公告)日:2017-05-03

    申请号:EP15783783

    申请日:2015-03-02

    申请人: JFE STEEL CORP

    摘要: By using a treatment solution for chromium-free insulating coating containing one or more of a Mg phosphate, Ca phosphate, Ba phosphate, Sr phosphate, Zn phosphate, Al phosphate, and Mn phosphate, wherein colloidal silica is contained in an amount of 50 to 120 parts by mass per 100 parts by mass of the phosphate in terms of solid content of SiO 2 , and a water-soluble metal salt of Mg, Ca, Ba, Sr, Zn, Al, and Mn is contained to adjust the molar ratio between M 2+ (=Mg,Ca,Ba,Sr,Zn,Mn) and/or M 3+ (=Al) which are metallic elements contained in the treatment solution and P to a range of 0.6‰¤(M 2+ +1.5×M 3+ )/P‰¤1.0, chromium-free insulating coating that provides excellent moisture absorption resistance for a long period and has a sufficient iron loss reduction effect can be obtained at low cost while minimizing the amount of expensive Ti such as Ti chelate used or without using such expensive Ti at all.

    摘要翻译: 通过使用含有磷酸镁,磷酸钙,磷酸钡,磷酸锶,磷酸锌,磷酸铝和磷酸锰中的一种或多种的无铬绝缘涂层处理溶液,其中胶体二氧化硅的含量为50至100重量% 相对于SiO 2的固体成分100质量份,含有120质量份的Mg,Ca,Ba,Sr,Zn,Al,Mn的水溶性金属盐,调整摩尔比 作为处理液中含有的作为金属元素的M 2+(= Mg,Ca,Ba,Sr,Zn,Mn)和/或M 3+(= Al),P为0.6‰以上(M 2+ + 1.5×M 3+)/P<1.0,能够以低成本获得长期提供优异的耐吸湿性并且具有充分的铁损降低效果的无铬绝缘涂层,同时最小化昂贵的Ti等的量 因为Ti螯合物使用或不使用这种昂贵的Ti。