NON-CHROMIUM COATING AGENT FOR A GRAIN-ORIENTED ELECTRICAL STEEL SHEET, PREPARATION METHOD THEREOF, ELECTRICAL STEEL SHEET USING THE SAME, AND MANUFACTURING METHOD THEREOF
    5.
    发明申请
    NON-CHROMIUM COATING AGENT FOR A GRAIN-ORIENTED ELECTRICAL STEEL SHEET, PREPARATION METHOD THEREOF, ELECTRICAL STEEL SHEET USING THE SAME, AND MANUFACTURING METHOD THEREOF 审中-公开
    用于面向电工钢板的非铬涂层剂,其制备方法,使用其的电工钢板及其制造方法

    公开(公告)号:WO2010016658A2

    公开(公告)日:2010-02-11

    申请号:PCT/KR2009003114

    申请日:2009-06-10

    CPC classification number: C23C22/74

    Abstract: The present invention relates to a coating agent, to a preparation method thereof, and to the use thereof, and more particularly, aims to manufacture a grain-oriented electrical steel sheet having great tensile stress caused by an insulation film. To achieve the aim, the coating agent of the present invention consists of phosphate, colloid silica, and hematite sol, and cobalt hydroxide or boric acid is added to the coating agent. The method for preparing a coating agent of the present invention includes a step of preparing a silica-hematite mixture solution (1) by injecting hematite sol into colloid silica and stirring the mixture, as well as a step of preparing a mixture solution (2) by gradually injecting phosphate into the silica-hematite mixture solution (1) prepared in the previous step. Further, the present invention provides a grain-oriented electrical steel sheet wherein the steel sheet having a surface coated with the coating agent has a coating tension of 0.30~1.02 kg/mm2, and provides a method for manufacturing a grain-oriented electrical steel sheet, including the steps of applying the coating agent to a grain-oriented electrical steel sheet such that the amount of coating agent applied on the dried coated film of the steel sheet is 0.5~6.0 g/m2, and performing heat treatment in two stages. The coating agent of the present invention is capable of forming a dense coated film when used in an electrical steel sheet or the like, and improving the adhesion property, film tension allowance, and abrasion resistance thereof as compared to conventional films.

    Abstract translation: 本发明涉及一种涂布剂,其制备方法及其用途,更具体地涉及制造由绝缘膜引起的拉伸应力大的方向性电磁钢板。 为了达到目的,本发明的涂层剂由磷酸盐,胶体二氧化硅和赤铁矿溶胶组成,向该涂层剂中加入氢氧化钴或硼酸。 制备本发明的涂布剂的方法包括通过将赤铁矿溶胶注入胶体二氧化硅并搅拌混合物以及制备混合溶液(2)的步骤来制备二氧化硅 - 赤铁矿混合物溶液(1) 通过将磷酸盐逐渐注入上一步制备的二氧化硅 - 赤铁矿混合溶液(1)中。 另外,本发明提供了一种方向性电磁钢板,其特征在于,具有涂布所述涂布剂的表面的钢板的涂布张力为0.30〜1.02kg / mm 2,并且提供了一种制造方向性电磁钢板的方法 包括以下步骤:将涂布剂施加到方向性电磁钢板上,使得施加在钢板的干燥涂膜上的涂布剂的量为0.5〜6.0g / m 2,并进行两个阶段的热处理。 本发明的涂布剂能够在电工钢板等中使用时形成致密的涂膜,与以往的膜相比,能够提高粘附性,膜张力容许性和耐磨损性。

Patent Agency Ranking