Method for intelligent grouping rolled steel type in steel rolling process
A technology for rolling steel and steel grades, applied in the field of intelligent grouping of rolling steel grades, can solve the problems of no self-learning coefficient Rat, increase development cost, reduce hit rate, etc., achieve good practical value, reduce quantity, and improve first hit rate effect
Active Publication Date: 2016-01-20
SUQIAN NANGANG JINXIN STEEL ROLLING CO LTD
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Problems solved by technology
[0008] However, the above method of saving Rat has two disadvantages: (1) Assuming that a steel type X has never been rolled, it means that there is no self-learning coefficient Rat to use when the steel type is rolled for the first time, which means that its The first piece of rolling is difficult to roll, which reduces the hit rate and increases the development cost; (2) Different steel types, such as steel type B and steel type D, may have similar composition, similar hardness, and deformation resistance. Similar, the reason why they have different names of steel grades is just because of different uses
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Embodiment 1
[0035] This embodiment provides a method for intelligent grouping of rolling steel grades in the rolling process, the grouping method includes the following steps, the process is as follows figure 1 Shown:
[0036] Step (1): obtaining the composition of the rolled steel grade;
[0037] Step (2): Based on the basic elements of steel grades, firstly according to the actual rolling force data of the three-level system and the corresponding mathematical models, the deformation resistance parameters of various steel grade components at 1000±30°C are regressed, and then according to the regression The deformation resistance parameters of each steel grade, combined with the mass fraction of the corresponding steel grade components, use the method of cyclic iterative search to search out the quantitative functional relationship between the deformation resistance parameters and the components of each steel grade, so as to obtain the deformation resistance and steel grade The relations...
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The invention discloses a method for intelligent grouping a rolled steel type in the steel rolling process. The method includes the following steps that firstly, the components of the rolled steel type are obtained; secondly, a basic value of deformation resistance of the steel type is calculated; thirdly, according to the BTF level of the steel type, a corresponding group is automatically searched for a self-learning coefficient of the steel type at the level; fourthly, schedule calculation is performed and deformation resistance parameters at different temperatures are calculated; fifthly, rolling production is performed; sixthly, after production is finished, the self-learning coefficient of a steel plate is stored in a corresponding self-learning grouping file which is automatically searched for according to the BTF level of the steel type; and seventhly, the method is finished. The method is simple and feasible, labor intensity is relieved, the deformation resistance of any steel type at any temperature can be predicted, prediction accuracy is improved, the first release hit rate in the rolling process is increased, the rejection rate and the non-planed rate are decreased, cost is reduced, and production efficiency is improved.
Description
technical field [0001] The invention relates to a method for intelligently grouping rolled steel grades in order to improve the precision of rolling force prediction during the medium-thick plate rolling process. Background technique [0002] In the production of medium and heavy plates, due to the complexity of rolling conditions, it is difficult for any physical model to predict the rolling force of various steel types perfectly and accurately; The basic principle is as follows: set a certain steel type as the predicted rolling force of a certain pass of the steel billet of A as Fset, and the actual rolling force as Fact, then generally by setting a ratio Rat, after the rolling is completed, make, [0003] R a t = F a c t F s e t ...
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IPC IPC(8): B21B38/08
CPCB21B38/08B21B2265/12
Inventor 祝夫文郭怀兵杜海军刘美邓阳陈富强廖仕军
Owner SUQIAN NANGANG JINXIN STEEL ROLLING CO LTD