Rough-rolling width self-learning method
A self-learning, width technology, applied in the direction of metal rolling stands, metal rolling mill stands, etc., can solve the problems of mass quality and low width control accuracy, to improve the physical quality, improve the control accuracy, significantly economical The effect of benefit and social benefit
Inactive Publication Date: 2013-07-17
PANZHIHUA IRON AND STEEL +1
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Problems solved by technology
The width control accuracy is not high, which will eventually cause quality problems in large batches
Method used
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Embodiment 1
[0095] According to the layout of the width gauge ( figure 1 ) Give examples to illustrate the "3+3" rolling strategy. The billet to be rolled is placed on the rolling line L, first passes through the first width gauge 1 to reach the first vertical rolling mill E1 and the first horizontal rolling mill R1, and completes the first pass of rolling, using the first width gauge 1 Obtain the actual measured value of the entrance width w1; then, pass through the first horizontal rolling mill R1 and the first vertical rolling mill E1 in the reverse direction, and pass through the first width gauge 1 to complete the second pass rolling, which is obtained by the first width gauge 1 The measured value of the outlet width w2. by image 3 The self-learning method shown performs the self-learning of the rough rolling width of the first stage of rolling, so as to change the self-learning coefficient by adjusting the side pressure of the vertical roll to determine the self-learning coefficien...
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The invention discloses a rough-rolling width self-learning method. The rough-rolling width self-learning method comprises the step of dividing rough rolling into multiple-section pass rolling according to rolling strategies, wherein the rough-rolling width self-learning method of each pass of all sections comprises the following steps of: obtaining an inlet width true measured value w1 of a current pass, an outlet width true measured value w2, a horizontal roller inlet thickness h1, a horizontal roller outlet thickness h2 and a vertical roller gap true measured value we; allocating a self-learning coefficient lambda; calculating and then obtaining a side pressure amount de; calculating and then obtaining a horizontal roller width stretching value dwlat; calculating and then obtaining a vertical roller dog-bone width stretching value debul; obtaining a calculated outlet width w2' according to the rolling passes; and comparing the outlet width true measured value w2 with the calculated outlet width w2' so as to obtain the corrected self-learning coefficient lambda, and then carrying out the rough-rolling width self-learning of the next section.
Description
Technical field [0001] The invention belongs to the technical field of metallurgical process control, and relates to a method for self-learning rough rolling width. Background technique [0002] As we all know, one of the most basic requirements for plates is "accurate size", and the low dimensional accuracy will greatly affect the physical quality of the product and thus affect the economic benefits. Therefore, improving the width accuracy of hot-rolled plates and reducing the production of unqualified width rolling products is an important issue in the production control of plate hot-rolling. [0003] In the usual hot rolling production, the roughing mill can be used to control the width of the plate in addition to the thickness of the intermediate billet suitable for finishing rolling. The stability of rough rolling width control is directly related to self-learning. The width control accuracy is not high, which will eventually cause mass quality problems. Therefore, it is pa...
Claims
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IPC IPC(8): B21B37/22
Inventor 雷红刚曾虹云胡松涛佘广夫方淑芳张中平刘勇陈亮陈建波
Owner PANZHIHUA IRON AND STEEL