Surface coating agent used on basis of continuous casting and rolling production line

Abstract

The invention discloses a surface coating agent used on the basis of a continuous casting and rolling production line, which belongs to the field of steel production and comprises the following components: 12-18% of glass powder, 20-40% of kaolin, 20-40% of diatomite, 18-25% of calcium aluminate cement and 6-12% of glass fiber. Compared with the prior art, the heat loss can be reduced, the surface oxidation of the strip steel is effectively alleviated, the surface quality is improved, and the production energy consumption is reduced.

Description

technical field [0001] The invention relates to an iron and steel production technology, in particular to a surface coating agent based on a continuous casting and rolling production line and a method for using the same. Background technique [0002] In recent years, my country's industrial development environment has undergone profound changes. The cost-reducing and environmentally friendly steel production process has become a very necessary way of survival. Therefore, "replacing cooling with heat" is increasingly recognized at home and abroad. become a new trend in the industry. [0003] At present, the continuous casting and rolling production line is equipped with a thermal insulation cover between the rough rolling outlet and the high-pressure descaling box to reduce heat loss. However, the thermal insulation effect of the thermal insulation cover is poor, so there is a large heat loss and a low thermal history. In the subsequent induction heating process, the inducti...

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Problems solved by technology

However, the insulation effect of the insulation cover is poor, so there is a large heat loss and a low thermal history.

In the subsequent induction heating process, the induction heating temperature needs to be increased, and the surface of the intermediate billet is severely oxidized at high temperature, resulting in obvious traces of pickling thick iron oxide scale, and even the phenomenon that it cannot be washed clean.

Because the thin gauge positioning is to replace some cold-rolled products, so the traces of iron scale are serious, it is difficult to meet the performance requirements of customers, and it brings great inconvenience to downstream customers.

At the same time, too deep pits also have a potential impact on the service life of the material

[0004] In addition, increasing the induction heating temperature brings about an increase in power consumption, and the existence of scale also indirectly increases the energy consumption of high-pressure descaling

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