Method for straightening tank plate containing nickel and vanadium

Abstract

The invention relates to a method for straightening a tank plate containing nickel and vanadium, which determines and controls recording temperature and roll bending manner and performances thrice straightening operations based on actual nominal thickness and nominal width of the steel plate and corresponding to the recording thickness input into the straightening model. The method of the invention has advantages of reasonable technique selection, scientific parameter determination and accuracy control method, the yield of the tank plate containing nickel and vanadium are raised from 80% to 97%, the integral time of delivery advances more than 10 days. Synthesis yield of the hot-rolled tank plate containing nickel and vanadium is enhanced, the re-straightening rate of the plate is reduced; but also the waste loss caused by disqualification of the plate is sufficiently decreased, and the economic benefit can reach 1.5 million yuan every year.

Description

technical field [0001] The invention belongs to the field of steel rolling, and in particular relates to a shape straightening method for hot-rolled container steel plates containing nickel and vanadium components. Background technique [0002] The hot-rolled container steel plate containing nickel and vanadium is a kind of low-alloy container steel plate that has only appeared in recent years. Due to the large width of the steel plate, from 2000mm to more than 3000mm; and the large thickness span, ranging from 12mm to 32mm in thickness. In addition, in order to ensure the performance of the steel plate in the rolling process, a series of controlled rolling measures and forced cooling process have been adopted, so the shape deformation rate of the rolled steel plate is relatively large, and it is very difficult to straighten. The qualification rate of the flat shape after straightening is only about 80%, so that the overall delivery date of the steel plate of this type cann...

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Problems solved by technology

In addition, in order to ensure the performance of the steel plate in the rolling process, a series of controlled rolling measures and forced cooling process have been adopted, so the shape deformation rate of the rolled steel plate is relatively large, and it is very difficult to straighten. The qualification rate of the flat shape after straightening is only about 80%, so that the overall delivery date of the steel plate of this type cannot be guaranteed, and more waste products are caused due to the unqualified flat shape, which not only affects the reputation of the rolling mill, but also wastes energy, resulting in unsatisfactory due economic loss

[0003] After searching, there are no literature records and data reports about the straightening of hot-rolled container steel plates containing nickel and vanadium components.

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