Apparatus for cooling steel sheet

An apparatus for cooling a steel sheet, the apparatus comprising:

• an apparatus body provided to be spaced apart from the steel sheet in a conveying path of the steel sheet;
• and
• a cooling unit provided in the apparatus body to supply a cooling fluid,
• wherein the apparatus body comprises:
• a first edge body facing a first edge portion extending a predetermined distance from one side end in a width direction of the steel sheet to a center in the width direction of the steel sheet;
• and
• a second edge body facing a second edge portion extending a predetermined distance from the other side end in the width direction of the steel sheet to the center in the width direction of the steel sheet,
• wherein each of the first and second edge bodies is provided such that a cross-section in a direction, perpendicular to a conveying direction of the steel sheet, is linearly inclined, and end portions of the first and second edge bodies are inclined in a direction away from the steel sheet to be present farthest from the steel sheet,
• wherein the apparatus body has a first inclination angle formed between an extension line of a symmetry point at which the first edge body and the second edge body intersect each other and the first and second edge bodies, and
• wherein each of the first and second edge bodies comprises:
• a first inclined section forming the first inclination angle together with the extension line and being a region inclined in a direction away from the steel sheet;
• a non-inclined section, connected to the first inclined section, from which a shortest distance to the steel sheet in a thickness direction of the steel sheet is provided to be constant;
• and
• a second inclined section connected to the non-inclined section and being a region inclined in a direction toward the steel sheet.

An apparatus for cooling a steel sheet, the apparatus comprising:

• an apparatus body provided to be spaced apart from the steel sheet in a conveying path of the steel sheet;
• and
• a cooling unit provided in the apparatus body to supply a cooling fluid,
• wherein the apparatus body comprises:
• a first edge body facing a first edge portion extending a predetermined distance from one side end in a width direction of the steel sheet to a center in the width direction of the steel sheet;
• and
• a second edge body facing a second edge portion extending a predetermined distance from the other side end in the width direction of the steel sheet to the center in the width direction of the steel sheet;
• and
• a center body facing a center in a width direction of the steel sheet and present between the first edge body and the second edge body,
• wherein the center body is provided such that a shortest distance to the steel sheet in a thickness direction of the steel sheet is provided to be constant in the width direction the steel sheet,
• wherein each of the first edge body and the second edge body comprises:
• a first inclined section facing the edge portion of the steel sheet and formed by providing an external surface of the first inclined section so as to be inclined in a direction away from a surface of the steel sheet;
• a non-inclined section connected to the first inclined section and formed by providing an external surface of the non-inclined section so as not to be inclined;
• and
• a second inclined section connected to the non-inclined section and formed by providing an external surface of the second inclined section so as to be inclined in a direction toward the surface of the steel sheet,
• wherein a length of the non-inclined section in the width direction of the steel sheet is greater than 0 and is a value less than or equal to ⅕ of a total length of the center body in the width direction of the steel sheet, and
• wherein the first and second inclined sections are provided to be linearly inclined.