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Stable shearing tension force setting method

A tension setting and stabilization technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as unstable shearing process, burrs, strip vibration, etc., and reduce the incidence of burrs and other defects , reduce mutations and increase stability

Active Publication Date: 2013-03-27
BAOSHAN IRON & STEEL CO LTD +1
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AI Technical Summary

Problems solved by technology

The result of the large fluctuation of the actual tension is that the strip vibrates obviously during the shearing process, causing the entire shearing process to be unstable, and in severe cases, it will cause burrs in the shearing process

Method used

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  • Stable shearing tension force setting method

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Embodiment Construction

[0041] figure 2 Disclosed is a stable shear tension setting method according to an embodiment of the present invention, which is suitable for the disk shear specification process of an acid rolling mill. The tension setting method 200 includes:

[0042] 201. Select N steel coils to be cut. In one embodiment, the value of N is N≥2.

[0043] 202. Collect characteristic parameters of the N steel coils. In one embodiment, the characteristic parameters include: strip width B i , strip thickness h i , strip strength σ si . where strip width B i and strip thickness h i Reflecting specification changes, strip strength σ si Indicates steel grade change.

[0044] 203. Importing tension setpoint allows adjustment coefficient α. In one embodiment, the value range of the tension setting value allows the adjustment coefficient α to be between 0.03-0.15.

[0045] 204. Set the current steel coil number as i=1, corresponding to the first coil among the N steel coils, and set the re...

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Abstract

The invention discloses a stable shearing tension force setting method which is applicable to a circle shear specification changing process of a sour rolling mill unit. The method includes selecting N steel coils and collecting characteristic parameters; importing an allowance adjustment coefficient alpha of a tension force setting value; setting serial numbers of the steel coils; calculating a front average tension force setting value and a rear average tension force setting value of circle shears of stripes of the steel coils according to a circle shear tension force setting model; setting a front total tension force setting value and a rear total tension force setting value of the circle shears; acquiring a front tension force changing rate and a rear tension force changing rate, and judging whether a front total tension force setting value and a rear total tension force setting value are required to be recalculated according to the front tension force changing rate and the rear tension force changing rate; performing repeated calculation until front total tension force setting values and rear total tension force setting values of all the N steel coils are calculated; and respectively setting front total shearing tension forces and rear total shearing tension forces of the N steel coils in the shearing process of the circle shears according to the calculated front total tension force setting values and the rear total tension force setting values.

Description

technical field [0001] The invention relates to the technical field of shearing, in particular to a tension setting method suitable for aiming at stable shearing during the disc shearing specification process of an acid rolling mill. Background technique [0002] At present, the disc shears of acid rolling mills at home and abroad often adopt two schemes for setting the front and rear tensions: the first is the fixed average tension method. The fixed average tension method uses the same average tension for all strip sizes and steel grades. The second is to set the tension method according to the specification and steel type. This method is more reasonable than the fixed average tension method by considering the specification of the strip to be cut and the average tension of the steel. In fact, no matter which tension setting scheme is adopted, as long as the specifications of the strip to be cut change, whether it is thickness or width (the second method also has steel typ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 王康健郑涛白振华李国辰
Owner BAOSHAN IRON & STEEL CO LTD
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