Posco

Soon-Bok Park

Min Soo Han

Chang Soo Park

Min Serk Kwon

Chan-Hee Han

Ho-Kyung Shim

Dae-Uk Kim

Bungkwan Shon

A pre-coating agent composition for a grain-oriented electrical steel sheet, a grain-oriented electrical steel sheet including the same, and a manufacturing method thereof are provided. Particularly, a pre-coating agent composition for a grain-oriented electrical steel sheet including an acid containing boron (B); and a solvent, a grain-oriented electrical steel sheet including the same, and a manufacturing method thereof are provided.

Pre-coating agent composition for grain-oriented electrical steel sheet, grain-oriented electrical steel sheet comprising same, and manufacturing method therefor

A coating agent for an electrical steel sheet and a manufacturing method therefor are disclosed. A coating agent for an electrical steel sheet according to an example embodiment of the present invention includes a metal phosphate derivative solution, colloid silica, chromium oxide, and solid silica, and a solvent, wherein the metal phosphate derivative is a single material of a magnesium phosphate derivative or a mixed material of an aluminum phosphate derivative and a magnesium phosphate derivative, and in the mixed material, an amount of aluminum phosphate derivative is 10 wt % or less (not including 0%).

Coating agent for electrical steel sheet, manufacturing method therefor and electrical steel sheet coating method using same

An oriented electrical steel sheet and a method of manufacturing the same are provided, and in a method of manufacturing an oriented electrical steel sheet including processes of producing a hot rolled plate by hot rolling a steel slab, performing or omitting hot rolled plate annealing, performing cold rolling, performing decarburization and nitride annealing, and performing final high temperature annealing, the decarburization and nitride annealing process is performed in a dew point range of 35-55&#xb0; C., and in the final annealing process, a glassless additive including MgO is applied.

Grain-oriented electrical steel sheet, and method for manufacturing the same

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Soon-Bok Park