2results about How to "Reduce cutting loss" patented technology

The application discloses a steel billet continuous casting flow number transmission method based on direct rolling steelmaking and rolling, and a method for sequentially transmitting the information of the steelmaking continuous casting billet flow number and the corresponding continuous casting billet gauge, temperature, furnace number and the like to the cold bed length measuring system through a series of detection elements, rolling current and other signals; specifically, when the direct rolling PLC identifies the continuous casting billet flow number, the steel billet gauge, temperature, furnace number and the like of the continuous casting billet corresponding to the flow number are received through the network communication between the steelmaking PLC system and the direct rolling PLC system, and then all the information is transmitted to the main rolling line PLC system; the main rolling line PLC system sequentially transmits according to the rolling direction of the steel billet, so that the steel billet in rolling and the flow number and other information are one-to-one corresponding, and finally the flow number and other information are transmitted to the length measuring system, thereby providing the data basis for the subsequent steelmaking continuous casting billet gauge.

The application provides a solar cell. The solar cell comprises a substrate and a first passivation layer covering the substrate, the substrate has a first surface and a second surface opposite to each other, the first surface has groove regions and textured regions arranged alternately, and the doping concentration ranges of the groove regions and the textured regions do not overlap; the groove regions are provided with bottom surfaces recessed into the substrate, and inclined surfaces connecting the bottom surfaces and the textured regions, the inclined surfaces are smooth inclined surfaces; the bottom surfaces are formed with a plurality of light-trapping structures, the light-trapping structures are non-pyramid structures; and the plurality of light-trapping structures form a three-dimensional protrusion group on the surface of the bottom surface. The solar cell can reduce cutting loss through the functions of guiding crack propagation of the inclined surfaces and the light-trapping structures.