SOLUTION FOR FORMING INSULATION COATING AND GRAIN-ORIENTED ELECTRICAL STEEL SHEET

• Main Authors: TAKAHASHI MASARU, SATO HIROHIKO, LAHN LUDGER, SCHEPERS CARSTEN, KANEHASHI KOJI, LEMAITRE REGIS, TAKEDA KAZUTOSHI, YAMAZAKI SHUICHI
• Format: Patent
• Language: English; Korean
• Published: 12.10.2015
• Subjects: ARTIFICIAL STONE; BASIC ELECTRIC ELEMENTS; CEMENTS; CERAMICS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; DIFFUSION TREATMENT OF METALLIC MATERIAL; ELECTRICITY; INDUCTANCES; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; LIME, MAGNESIA; MAGNETS; METALLURGY; REFRACTORIES; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; SLAG; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSFORMERS; TREATMENT OF NATURAL STONE

방향성 전기 강 시트의 절연 코팅을 형성하기 위한 용액은 인산염 용액과 콜로이드 실리카를 혼합하여 준비된 수용액을 포함한다. 수용액에 크롬은 첨가되지 않는다. 콜로이드 실리카는 알루민산염에 의해 표면 개질된 실리카 입자를 포함하거나 통상적인 콜로이드 실리카와 같은 콜로이드 실리카에 알루민산염을 첨가함으로써 준비된다. A solution for forming an insulation coating of grain-oriented electrical steel sheet includes an aqueous solution prepared by mixing a phosphate solution and colloidal silica. Chromium is not added to the aqueous solution. The colloidal silica includes silica particles surface-modified by an aluminate or is prepared by adding an aluminate to colloidal silica such as conventional colloidal silica.