A kind of protective separation agent for stack rolling of high nickel steel wide thin plate and stack rolling method

Abstract

The invention relates to a protective separating agent for high-nickel steel wide sheet rolling and a rolling method. The protective separating agent is formed by mixing a protective separating agentadhesive and a protective separating agent powder, wherein the protective separating agent adhesive is composed of silicon dioxide and ionized water, and the protective separating agent powder is composed of nano silicon dioxide, silicon nitride, zirconium dioxide and aluminum silicate. The process route of the high-nickel steel wide sheet rolling comprises the following steps of selecting materials, normalizing, cutting, beveling, edge milling, cleaning, preparing a protective separating agent, spraying the protective separating agent, assembling, presetting air holes, welding, spraying a high-temperature anti-oxidation paint, heating, rolling, separating and measuring thickness. The protective separating agent can play a role in preventing the rolled steel plate from being oxidized in ahigh-temperature process, and the effect that the steel plates are easy to separate after rolling is ensured; and the protective separating agent can be applied to the high-nickel steel wide sheet rolling, the rolling difficulty can be reduced, the flatness of the steel plate is improved, the rolling success rate is improved, and the yield is improved.

Description

Technical field [0001] The invention relates to the technical field of thin plate stack rolling, in particular to a protective separating agent for high nickel steel wide thin plate stack rolling and a stack rolling method. Background technique [0002] With the increasing level of construction of domestically-made LNG storage tanks in my country and the increasing number of engineering projects, design units have a huge demand for high nickel steel wide and thin plates in order to reduce energy and save costs. [0003] In the rolling process of high nickel steel wide and thin plates, the steel plate is compressed more. As the rolling thickness becomes thinner and thinner, the steel plate becomes longer and longer, and the temperature drop of the steel plate increases faster. Even; the rolling deformation resistance is increased, the unevenness of the rolled steel plate is large, the thickness difference of the same plate is not easy to control, and the rolling power is low, which ...

AI Technical Summary

Problems solved by technology

But it only uses 150kg or 300kg vacuum induction furnace to make steel in the laboratory, which is in the stage of laboratory research and has not been applied to industrial production.