Hot rolled steel plate for double-faced enamel and production method thereof

Abstract

The invention relates to a hot rolled steel plate for double-faced enamel and a production method of the hot rolled steel plate and belongs to the technical field of iron-base alloy. The production method of the hot rolled steel plate comprises the steps of: controlling the ingredients and mass percents of the hot rolled steel plate as follows: 0.02-0.1% of C, not larger than 0.1% of Si, 0.2-1.0% of Mn, not larger than 0.02% of P, 0.005-0.035% of S, 0.01-0.1% of Als, 0.002-0.01% of N, 0.01-0.1% of Ti, 0.01-0.05% of Sb, and the balance of ferrum and inevitable impurities; and simultaneously controlling the heating temperature of the continuous casting slab of the hot rolled steel plate to be 1150-1230 DEG C, controlling the temperature of a precise rolling inlet to be 1020+ / -20 DEG C, controlling the precise rolling ending temperature to be 840-920 DEG C, and controlling the coiling temperature after the precise rolling operation to be 550-650 DEG C. The hot rolled steel plate and the production method of the hot rolled steel plate fully utilize the inevitable products C, S and N elements of steelmaking production to replace the function of the Ti element to reduce the dosage of the Ti element; and a proper dosage of Sb element is added to prevent the scales detonation of the enamel and reduce the steelmaking cost, and the hot rolled steel plate with good double-faced enamel processing performance and small strength performance change after enamel is obtained.

Description

technical field [0001] The invention relates to a hot-rolled steel plate for double-sided enamel and a production method of the hot-rolled steel plate, belonging to the technical field of iron-based alloys. Background technique [0002] The enamelled steel plate made by combining the steel plate and enamel by high-temperature enamelling is not only easy to form and can be made into complex structural parts, but also has the characteristics of wear resistance, corrosion resistance, and smooth and beautiful surface. Its application field is also from daily necessities to industrial products. With the extension of development, the requirements for the performance and characteristics of enamelled steel sheets are getting higher and higher. [0003] The existing hot-rolled enamelled steel plates can generally only be processed for single-sided enamelling with ordinary quality requirements, such as steel plates for water heater enamelled inner tanks; after double-sided enamelled p...

AI Technical Summary

Problems solved by technology

As the Chinese patent of publication number CN101353758A and the Chinese patent of publication number CN101353756A respectively disclose a kind of hot-rolled high-strength steel plate for double-sided enamel and hot-rolled high-strength steel plate for enamel and manufacturing method thereof, these two patents all involve C content High-strength hot-rolled steel plate, but its P and S content are high, which affects the deep drawing performance of the steel plate

Another example is a Chinese patent with publication number CN1966753A disclosing a hot-rolled double-sided enamel steel plate and its manufacturing method. The steel plate involved in this patent relies on high content of Ti as a hydrogen trap, and pursues an extremely low S content, which will increase the refining process. steel cost

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