Roll-shaped curve design method of high-strength steel temper mill

Abstract

The invention discloses a method for designing a roller curve of a high-strength steel leveling machine, which comprises the following steps: collecting parameters of steel in the leveling machine, setting a curvilinear equation and a related computation model and an objective function, inputting the related parameters into the curvilinear equation, the computation module and the objective function, obtaining the optimal parameters of the roller curve, and further obtaining the optimal roller curve of a working roller and a supporting roller. The method for designing the roller curve is characterized in that all the front tension, the rolling pressure and the pressure among rollers are transversely and evenly distributed and adopted as the optimal objective function at the first time, and peak values of the front tension, the rolling pressure and the pressure among rollers are restrained at the same time, a set of new mathematical models optimally designed of the curve of the high-strength steel roller is established, and applicable roller curves of the working roller and the supporting roller are designed; therefore, the quality of the shape of a plate and a strip after leveling is greatly improved, the roller loss of the working roller is reduced, the phenomena of 'gnawing shoulders' and 'losing weight' of the supporting roller are eliminated, and the occurrence probability of accidental roller replacement is reduced to the maximum.

Description

technical field [0001] The invention relates to rolling rolls for rolling high-strength steel, more specifically, to a roll profile curve design method for a high-strength steel tempering machine. Background technique [0002] In the current iron and steel industry, most of the existing roll profile design of the tempering machine only considers that the front tension stress of the strip is evenly distributed in the transverse direction, that is, the exit plate shape is good, and the roll profile curve is set based on this goal; there are also some On the basis of taking into account the precision of the plate shape and reducing the consumption of the rolls, the roll shape was optimized to be uniform in the horizontal distribution of the tension and the pressure between the rolls as the optimization objective function, but the roll shape design process did not take into account the lateral distribution of the rolling pressure Uniformity problem; some tempering mills can cons...

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Problems solved by technology

[0018] Aiming at the defects existing in the roll profile design of the current temper mill with a relatively single objective function to optimize the roll profile design, the purpose of the present invention is to provide a roll profile curve design method for a high-strength steel temper machine. The optimization of the roll shape curve design is carried out with a more comprehensive objective function, fully considering the high rolling pressure of the high-strength steel caused by the high roll consumption of the work roll, and the easy occurrence of "shoulders" and "meat loss" on the back-up rolls, etc. question

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