Fish-scaling-resistant enamel glaze for hot-rolled steel plates

Abstract

The invention discloses a fish-scaling-resistant enamel glaze for hot-rolled steel plates, which comprises the following components in parts by mass: 40 parts of high-temperature glaze, 30 parts of intermediate-temperature glaze, 30 parts of low-temperature glaze, 18 parts of 1000-mesh calcined quartz, 7 parts of clay, 0.3 part of borax, 0.2 part of sodium nitrite, 0.3 part of magnesium carbonate and 1 part of special adhesive agent. Through collocating with porcelain glazes with high, intermediate and low different softening points, the fish-scaling-resistant enamel glaze prepared by using the method disclosed by the invention facilitates the purging of most of gas generated in the process of enameling hot-rolled steel plates, so that fine uniform bubble structures are formed on a porcelain glaze layer, therefore, an effect of accommodating gas gradually discharged from the steel plates is achieved, and finally, a purpose that an enamel glaze product for hot-rolled plates does not have the phenomena of bubbling and porcelain shedding is achieved; and the adherence intensity of the enamel glaze is not reduced.

Description

technical field [0001] The invention relates to an anti-scaling enamel glaze for a hot-rolled steel plate. Background technique [0002] It is well known that in the hot rolling method, the steel has a large elongation ratio, but the surface is easy to oxidize, and the generated iron oxide and a small amount of slag or impurities may be pressed into the steel plate, resulting in rough surface; the hot rolling temperature is generally 1000°C Or so, every time it is rolled, it needs to be pickled with a certain concentration of hydrochloric acid, so that the hot-rolled steel plate can dissolve more hydrogen than the cold-rolled steel plate. Therefore, hot-rolled steel sheets will generate more gas than ordinary cold-rolled steel sheets for enamelling during enamel firing and use. Enameling on the surface can easily cause bubbles and pinholes in the porcelain layer, especially enamel defects such as scale explosions. , Hot-rolled sheets are generally not suitable for surface e...

AI Technical Summary

Problems solved by technology

Therefore, hot-rolled steel sheets will generate more gas than ordinary cold-rolled steel sheets for enamelling during enamel firing and use. Enameling on the surface can easily cause bubbles and pinholes in the porcelain layer, especially enamel defects such as scale explosions. , hot-rolled plates are generally not suitable for surface enamelling