TH68919B - The guide transmits hot rolled sheet. - Google Patents

Abstract

DC60 (12/11/57) This invention describes a hot-rolled sheet guide designed to reduce temperature variations in the longitudinal direction of hot-rolled steel sheets by efficiently injecting a stream of cooling water onto the underside of the hot-rolled steel sheet along the entire length of the guide, minimizing wear and extending its service life. The invention provides a hot-rolled sheet guide 30 positioned between the sheet-sliding roller sets 21,21. The sheet-sliding roller sets 21,21 convey the hot-rolled steel sheet during the hot-rolling process. The hot-rolled sheet guide 30 incorporates numerous spray nozzles 31, each positioned to intersect with cooling nozzle 27, which is positioned between the sheet-sliding roller sets 21,21, and a drain hole 32, located between adjacent spray nozzles 31, in the width direction of the conveyed hot-rolled steel sheet 5. Drain hole 32 is incorporated with extension 34 which extends in the direction of plate F through which hot-rolled steel plate 5 is conveyed, and a wide hole 33 is located at each end of extension 34 in the direction of plate F and expands in the width direction to provide a hot-rolled conveyor guide that can reduce the temperature change of the hot-rolled steel plate in the longitudinal direction by efficiently injecting cooling water onto the underside of the hot-rolled steel plate from the entire length of the hot-rolled conveyor guide and can reduce rapid wear to increase its service life. This invention provides for a hot-rolled conveyor guide 30 placed between the rotating roller sets. The steel plate conveyor 21,21, driven by a rotating roller conveyor, transports hot-rolled steel plates in the hot-rolling process. The hot-rolled plate conveyor 30 incorporates numerous spray nozzle holes 31, each positioned to accommodate the cooling spray nozzle 27, which is positioned between the rotating roller conveyor 21,21 and the drain hole 32. The drain hole 32 is located between adjacent spray nozzle holes 31 in the width direction of the hot-rolled steel plate 5 to be conveyed. The drain hole 32 incorporates an extension 34 that expands in the direction of plate F, through which the hot-rolled steel plate 5 is conveyed. Wide holes 33 are located at each end of the extension 34 in the direction of plate F and expand in the width direction of the plate.

Claims (1)

------11/06/2561------(OCR) Page 1 of 2 pages. Claims 1. The hot-rolled sheet guide is positioned between the sheet conveyor rollers. The sheet conveyor rollers convey the hot-rolled steel sheet in the hot rolling process, where the hot-rolled sheet guide consists of: numerous spray nozzle holes, each positioned to correspond with the cooling spray nozzles, which are positioned between the sheet conveyor rollers; and drain holes located between adjacent spray nozzle holes in the direction across the width of the hot-rolled steel sheet to be conveyed, where the drain holes include a first hole arranged in the sheet conveying direction through which the hot-rolled steel sheet is conveyed, and a second hole located at each end of the first hole in the sheet conveying direction and expanding in the direction across the width of the sheet, where it creates the drain holes. In such a way that the width W1 of the first hole section and the width W2 of the second hole section shall have a relationship obtained by Equation (1) below, where, viewed from above, vertically, the ratio of the opening area Sh shall be set to be in the range greater than or equal to 0.13 and less than or equal to 0.18, where the ratio of the opening area Sh is the ratio of the opening area of the spray nozzle and drain holes to the total surface area of the hot-rolled conveyor. 1.00 2. Hot-rolled conveyor as specified in Reputation 1, where the hot-rolled conveyor is made of resin which is a softer material than the material of the hot-rolled steel plate. 3. Hot-rolled conveyor as specified in Reputation 2, where the Vickers hardness of the material used 4. Hot-rolled sheet guides shall be placed between the sheets of the hot-rolled sheet conveyor assembly in the hot-rolling process where the hot-rolled sheet guides shall be placed at the center of the width of each roller of the sheet conveyor assembly and the width of the hot-rolled sheet guides shall be less than or equal to half the width of the rollers of the sheet conveyor assembly. ------------ 1. Hot-rolled sheet guides shall be placed between the sheets of the hot-rolled sheet conveyor assembly, which conveys the hot-rolled steel sheet in the hot-rolling process where the hot-rolled sheet guides shall consist of: numerous spray nozzle holes, each positioned to correspond with the cooling spray nozzles, which are placed between the sheets of the hot-rolled sheet conveyor assembly; and drain holes, which are located between adjacent spray nozzle holes in the direction of the width of the hot-rolled steel sheet. The material is conveyed through two holes: the first, aligned in the direction of passage along the plate, through which the hot-rolled steel sheet is conveyed, and the second, located at each end of the first hole in the direction of passage along the plate, expanding outwards along the width of the plate.