42results about How to "Reduce cut loss" patented technology

The invention relates to a method for reducing cutting loss of wide and thick plates. The edge cutting amount of steel plates can be reduced effectively by reasonably controlling values of head tails and fish tails of the steel plates and the recessed values of edges, so that the yield of the wide and thick plates is improved. Compared with the prior art, the method for reducing the cutting loss of the wide and thick plates has the advantages that the cutting loss of the steel plates is reduced obviously after the method is used, and the yield of each steel plate can be increased by about 0.2%-0.7%.

A heavy plate rolling control method for removing defects on the edges of a continuous casting bloom comprises the following steps: (1) rotating the continuous casting bloom before pressing upon the continuous casting bloom are taken out of a furnace to enable edges of both lateral sides of the continuous casting bloom to be a top end and a tail end of the continuous casting bloom to be rolled to enter a rolling mill and starting rolling in a forming stage; (2) adopting a rolling method for spreading a heavy plate edge in the last rolling for forming; (3) rotating the continuous casting bloom 90 degrees upon completing rolling in the forming stage to enable edges of the other sides of the continuous casting bloom to revert to the top end and the tail end of the continuous casting bloom to enter the rolling mill and starting rolling in a stage for spreading the heavy plate edge; (4) adopting the rolling method for spreading the heavy plate edge in the last rolling for spreading the heavy plate edge; (5) rotating the continuous casting bloom 90 degrees upon completing the stage for spreading the heavy plate edge in the last rolling for spreading the heavy plate edge and starting rolling in a finishing rolling stage; (6) starting a process for finishing cutting plate. According to this method, the three-time rotating rolling enables defects on the edges of the continuous casting bloom to transfer to a top end part and a tail end part of a heavy plate which are to be cut off and is capable of maintaining an advantage of shape control of the two-time rotating control in the prior art and prevent a finishing steel plate from convexity, thereby reducing amounts of trimming and cutting loss practically.

The embodiment of the invention provides an angle rolling process parameter determination method, device and equipment and a readable storage medium, and the method comprises the following steps: starting from an initial rolling pass, circulating the following steps to determine the rolling pass of angle rolling: calculating the maximum steel rotating angle under the current rolling pass; according to the maximum steel rotating angle, the width of the plate blank after rolling of the current rolling pass is calculated, and a first corner of the plate blank after rolling of the current rolling pass is calculated; when the number of the current rolling passes is an odd number, whether the rolling passes are increased or not is determined according to the relation between the width of the rolled plate blank and the target width; when the current rolling pass is an even number, whether the rolling pass is increased or not is determined according to the relation between the first corner and 90 degrees, when the first corner is equal to 90 degrees and the width of the rolled plate blank is smaller than the target width, the rolling pass is increased, and when the first corner is equal to 90 degrees and the width of the rolled plate blank is larger than or equal to the target width, circulation is ended; and determining that the current rolling pass is an angular rolling pass.