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

The invention discloses a preparation method of a thick slab of a chamfer titanium alloy. The preparation method comprises the following steps: 1, cogging-forging a titanium alloy ingot to obtain a titanium alloy forging stock; 2, carrying out intermediate forging on the titanium alloy forging stock 2-3 heating times; 3, upsetting and stretch-forging the intermediate forged titanium alloy forging stock, shaping, chamfering edges on the upper surface and the lower surface of the shaped titanium alloy forging stock, and shaping to obtain a slab; and 4, machining the slab to obtain the chamfer titanium alloy with the thickness of 180-400mm. According to the invention, the large size chamfer titanium alloy slab with the thickness of 180-400mm can be prepared by adopting multi-heating and a manner combining repeatedly upsetting and stretching. By adopting the titanium alloy slab prepared with the method of the invention to roll, the edge folding of a sheet material can be reduced, so the cutting loss of the sheet material head, the sheet material tail and sheet material side surfaces is reduced, the sheet material rolling yield is improved by 5-8%, and the production cost is substantially reduced.

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 invention provides a method for controlling the tension fluctuation of a galvanized wire weld passing through a skin pass machine, comprising: before the first strip weld reaches the skin pass machine, the skin pass machine stops elongation control and controls its setting The rolling force is reduced to the decompression rolling force; the first decompression rate is obtained, and the first decompression rate is the decompression rate before the first strip weld seam reaches the skin pass mill; the second decompression rate is obtained, so The second decompression rate is the same as the first decompression rate; after the first strip weld passes through the skin pass mill, the set rolling force is controlled to increase to the second decompression rate according to the second decompression rate. The set rolling force for the strip. It solves the technical problem in the prior art that the tension of the skin-pass machine fluctuates greatly due to the drastic change of the reduction amount during the decompression, and the twill defect of the weld seam of the strip steel is caused. Through the control algorithm and program, the tension fluctuation when the galvanized wire weld passes through the skin pass machine is reduced, and then the mechanical properties of the strip are improved, the cutting loss is reduced, and the technical effect of the yield is guaranteed.

The invention discloses a thick-slab continuous casting billet cutting control system, which utilizes thick-slab rolling mill to send commands to short billets, heat pouring process tracking signals and other data, and optimizes the billet grouping of short billets within the scope of the casting machine , to ensure that the slab is cut according to the optimal length of the long slab; a calculation method for optimizing the slab grouping of thick slab continuous casting slabs can successfully find the optimal slab strategy, and optimize the cutting control of the long slab within the range of the casting machine , to control the continuous casting online cutting machine to perform online one-time cutting, thereby reducing cutting scrap, supporting the integration and optimization of continuous casting and thick plate rolling mill efficiency, and improving the efficiency and effect of continuous casting machine billet cutting; the invention has a friendly user interface, It can reduce cutting loss, support scenarios such as single-strand casting, double-strand casting, and casting of different steel types from thick plates to furnaces, ensuring the maximum and optimization of casting machine performance.

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.