Abstract: Provided is a method for producing an oriented electrical steel sheet with an ultra-low iron loss. The method for producing an oriented electrical steel sheet according to the present disclosure is a method for producing an oriented electrical steel sheet comprising the processes of performing reheating, hot rolling, hot-rolled sheet annealing, cold rolling, primary recrystallization annealing and secondary recrystallization annealing on a steel slab, whereby a ceramic coating layer is formed by subjecting a gas-phase ceramic precursor to a contact reaction in a plasma state using the atmospheric pressure plasma CVD (APP-CVD) process, on a part of or the entire one or both surfaces of a steel sheet which has been subjected to the primary recrystallization annealing, and then secondary recrystallization annealing is performed thereon.

Abstract: The present disclosure provides a manufacturing method and a grain-oriented electrical steel sheet manufactured thereby, the manufacturing method comprising the steps of: heating a slab; hot rolling the heated slab so as to manufacture a hot-rolled sheet; cold rolling the hot-rolled sheet so as to manufacture a cold-rolled sheet; decarburizing and annealing the cold-rolled steel sheet; forming a ceramic coating layer on a portion or the whole of one surface or two sides of the decarburized and annealed cold-rolled sheet by using a chemical vapor deposition (CVD) process; and finally annealing the cold-rolled sheet on which the ceramic coating layer is formed.

Abstract: A substrate polishing apparatus according to an example embodiment may include a substrate carrier configured to grasp and move a substrate, a polishing pad configured to come into contact with a polishing target surface of the substrate and polish the polishing target surface of the substrate, and a spray unit including a spray member configured to spray a fluid toward the substrate carrier.

Abstract: Provided is a method for producing an oriented electrical steel sheet with an ultra-low iron loss. The method for producing an oriented electrical steel sheet according to the present disclosure is a method for producing an oriented electrical steel sheet comprising the processes of performing reheating, hot rolling, hot-rolled sheet annealing, cold rolling, primary recrystallization annealing and secondary recrystallization annealing on a steel slab, whereby a ceramic coating layer is formed by subjecting a gas-phase ceramic precursor to a contact reaction in a plasma state using the atmospheric pressure plasma CVD (APP-CVD) process, on a part of or the entire one or both surfaces of a steel sheet which has been subjected to the primary recrystallization annealing, and then secondary recrystallization annealing is performed thereon.

Abstract: Provided is a method for producing an oriented electrical steel sheet with an ultra-low iron loss. The method for producing an oriented electrical steel sheet according to the present disclosure comprises: a step of preparing an oriented electrical steel sheet; and a step of forming a ceramic coating layer by subjecting a gas-phase ceramic precursor to a contact reaction in a plasma state using the atmospheric pressure plasma CVD (APP-CVD) process, on a part of or the entire one or both surfaces of the electrical steel sheet.

Abstract: There are provided a device and method for detecting joint parts of a steel strip in an endless hot rolling process.

Abstract: There are provided a device and method for detecting joint parts of a steel strip in an endless hot rolling process.