Heating device and heating method for edges of steel coils

Abstract

The invention provides a heating device and a heating method for edges of steel coils. The heating device comprises a water circulation system, a steam heating system, an electric control cabinet and a heating device, wherein the water circulation system comprises a hot water pump, a circulating water pipe, a check valve and a stop valve, the steam heating system is provided with an air inlet pipe, an electric gate valve, a transverse pipe and drain pipes, the electric control cabinet is provided with electrical elements and a PLC (programmable logic controller), and the heating device comprises connected water tanks with covers. The heating device and the heating method have the advantages that water is heated by steam, the steel coils are heated by hot water, the hot water is recycled, accordingly, water consumption can be greatly reduced, and the occupied area and the engineering investment are reduced; the heating efficiency is improved, steel coil heating time is greatly shortened, different heating temperatures can be adopted for the different steel coils, steel coil heating flexibility is improved, the rolling star temperature of the steel coils is assuredly kept higher than 50 DEG C under the condition that the heating time is shorter than 40 minutes, and requirements of rolling rhythm are met completely; and the quality of edges of rolled strip steel is effectively improved, the shortcoming of edge crack is overcome, and strip breakage accidents of the steel coils are stopped.

Description

technical field [0001] The invention belongs to the field of steel rolling technology, and in particular relates to a device and a heating method for rapidly heating the edges of steel coils before cold rolling. Background technique [0002] With the continuous development of science and technology, the precision requirements for cold-rolled products have also increased. The 20-high rolling mill has the characteristics of high rigidity of the roll system, large pass reduction and high product precision. , Silicon steel production has been widely used. [0003] Among iron and steel products, there is a class of products used in the iron cores of various motors and transformers. They are indispensable and important soft magnetic alloys in electric power, electronics and military industries, and are also important metal functional materials for energy saving. This type of product is a high-tech product urgently needed in the country. Due to its complex production process and m...

AI Technical Summary

Problems solved by technology

The problem of this method is that the heating speed is slow, the steel coil is easy to rust, and the energy consumption is high; at the same time, in order to ensure the connection of production, multiple steel coils need to be heated at the same time, so the floor area is large, the production flexibility is poor, and it is difficult for on-site management. bring great difficulty

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