A method for solving same-diameter different-speed snakelike rolling force energy parameters of a thick steel plate
A technology of serpentine rolling and thick steel plates, which is applied in the field of solving the force and energy parameters of thick steel plates with the same diameter and different speeds in serpentine rolling, and can solve problems affecting the biting and bending of turning steel
Inactive Publication Date: 2019-06-04
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology
However, for the asynchronous rolling of thick gauge steel plates, due to the inconsistent linear speed of the upper and lower work rolls, bending problems will occur after the steel plate is rolled, which will affect the subsequent transfer of steel and the biting of the next pass
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[0081] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings. However, it should be pointed out that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0082] Taking a 4200 medium and heavy plate rolling mill as an example, its detailed parameters are shown in Table 1. Take three sets of different roll diameters for detailed description:
[0083] The first set of data: the line speed of the upper work roll is 1.5m / s, and the line speed of the bottom work roll is 1.515m / s;
[0084] The second set of data: the line speed of the upper work roll is 1.5m / s, and the line speed of the bottom work roll is 1.535m / s;
[0085] The third set of data: the line speed of the upper work roll is 1.5m / s, and the line speed of the bott...
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The invention discloses a method for solving same-diameter different-speed snakelike rolling force energy parameters of a thick steel plate, and belongs to the technical field of thick steel plate plastic forming. The method is characterized in that a deformation area is divided into a rear sliding area I, a twisting area II, a front sliding area III and a reverse bending area IV according to thedirection of friction force of the contact surface of a snakelike rolling deformation area; Wherein the four areas do not exist at the same time, and the composition state of the deformation area is preliminarily determined according to the position state of the neutral point; a solution model of the rolling force and the rolling torque is determined according to the composition state, the initialcondition and the boundary condition of the deformation area; The rolling force and the rolling torque can be accurately predicted, and a theoretical basis is provided for snakelike rolling process design and rolling mill structure design.
Description
technical field [0001] The invention belongs to the technical field of plastic forming of thick steel plates, and in particular relates to a method for solving force parameters of thick steel plates in serpentine rolling with the same diameter and different speeds. Background technique [0002] High-performance thick-gauge steel plates are widely used in high-end technical equipment fields such as national defense and military equipment, ships, nuclear power, offshore platforms, pressure vessels, and heavy machinery, and are important structural materials. In the rolling production process of thick-gauge steel plates, due to insufficient deformation of the core, there is an as-cast structure and low mechanical properties. Generally, the method of increasing the total compression ratio is used to improve the mechanical properties of the core. However, due to the limitation of the production capacity of the continuous casting machine and the opening of the rolling mill, the to...
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IPC IPC(8): G06F17/50
Inventor 江连运雷军义孟庆成甄涛马立峰赵春江
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY