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Continuous-casting withdrawal and straightening unit system and load distributing method

A technology of load distribution and tension leveling machine, applied in the field of continuous casting equipment, can solve the problems of irregular load distribution of the drive motor, easy to cause accidents, overloaded working state of the drive motor, etc., to improve product quality, reduce production failure rate, The effect of improving production efficiency

Active Publication Date: 2014-08-27
WISDRI ENG & RES INC LTD
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Problems solved by technology

[0003] In view of the above problems, the object of the present invention is to provide a continuous casting straightening machine system and a load distribution method, aiming to solve the problem that in the existing continuous casting straightening machine system, due to the irregular load distribution of the driving motors, some driving motors are in the long-term Overloaded working state, technical problems that are likely to cause accidents

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  • Continuous-casting withdrawal and straightening unit system and load distributing method
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  • Continuous-casting withdrawal and straightening unit system and load distributing method

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Embodiment Construction

[0017] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0018] Firstly, the reasons for the load deviation of the drive motor of the tension leveler are analyzed. The F of the casting force of the driving roller to the slab can be expressed approximately as

[0019] F=N×u (1)

[0020] Among them: N is the pressure on the driving roll on the slab direction, u is the friction coefficient between the slab and the driving roll; for the tension leveler with the pinch roll lifted, its N=0, the tension leveler will not produce Therefore, it is not necessary and meaningful to participate in the load distribution. The following descriptions are only for the te...

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Abstract

The invention discloses the technical field of continuous-casting equipment, and provides a continuous-casting withdrawal and straightening unit system and a load distributing method. The method comprises the steps that the same motor rotating speed set value is set for all driving motors; a load distributing coefficient is set for each driving motor; withdrawal and straightening unit driving roller components needing to participate in load distribution are determined; actual output throwing force of driving rollers participating in load distribution is calculated; the total throwing resultant force is calculated; the throwing force set value of each driving motor participating in load distribution is calculated; a controller outputs the rotating speed compensation dosage; the sum of the rotating speed compensation dosage and the motor rotating speed set value is used as the input ends of the driving motors for rotating speed control, and the actual output throwing force of the driving rollers is used as feedback values to achieve closed-loop control. The load distributing coefficients are introduced to achieve free distribution of withdrawal and straightening unit total loads in withdrawal and straightening units, automatic control over the throwing force is achieved through closed-loop adjustment, and meanwhile according to the method, the pull speed changes can not be caused, and the production technology is not affected.

Description

technical field [0001] The invention belongs to the technical field of continuous casting equipment, and in particular relates to a continuous casting straightening machine system and a load distribution method. Background technique [0002] Straightening machine is a continuous casting equipment that continuously pulls out and straightens the billet. The billet continuous casting machine usually adopts a five-roller drawing and leveling machine, the bloom continuous casting machine is composed of 3 to 5 pairs of rollers, and the slab continuous casting machine adopts a multi-roller drawing and leveling machine. The tension and straightening machines of modern continuous casting machines all adopt AC frequency conversion speed regulation. In the production process, due to various errors in the drive system, the load distribution of each drive motor is irregular and uneven, causing some motors to work at full load or even overload for a long time, which is likely to cause ov...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/12B22D11/16
Inventor 蔡炜苏瑞淼叶理德赵菁
Owner WISDRI ENG & RES INC LTD
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