Hot-rolled pickling steel plate for deep drawing quality electro-galvanizing and production method thereof

Abstract

The invention discloses a hot-rolled pickling steel plate for deep drawing quality electro-galvanizing and a production method of the hot-rolled pickling steel plate. The hot-rolled pickling steel plate comprises the following chemical components of, by weight percentage, C <= 0.008%, Si <= 0.030%, 0.10%-0.40% of Mn, P <= 0.015%, S <= 0.010%, 0.020%-0.060% of Al, Ti <= 0.080%, and N <= 0.0050%. The hot-rolled pickling steel plate is prepared through molten iron pretreatment, converter smelting, alloy fine adjustment, RH furnace refining, continuous casting, casting blank heating, hot rolling, laminar cooling, coiling, pickling and leveling. The thickness range of the hot-rolled pickling steel plate can be controlled within 1.5-6.0 mm. The hot-rolled pickling steel plate can be used to produce thick galvanized steel sheets with surface quality above FB and uniform surface color, and requirements of galvanization can be met.

Description

technical field [0001] The invention belongs to the technical field of hot-rolled pickled steel sheets for electrogalvanizing, and in particular relates to a hot-rolled pickled steel sheet for deep-drawing electrogalvanizing and a production method thereof. Background technique [0002] Electro-galvanized steel sheets have good corrosion resistance, processability, weldability and paintability, and are mainly used in industries such as automobiles, home appliances, electronics, and light industry. With the rapid development of my country's automobile, home appliance, and electronics industries, the market for electro-galvanized steel sheets in my country is in short supply. Due to the constraints of quality factors and manufacturing technology level, my country's electro-galvanized steel sheet products still need to be imported in large quantities. Due to the particularity of the electro-galvanizing process, the substrate is required to have good shape and surface quality. ...

AI Technical Summary

Problems solved by technology

[0003] The thickness of cold-rolled steel sheets for electro-galvanizing is generally less than 3.0 mm, which cannot meet the needs of thick electro-galvanized steel sheets, and its production process is more complicated and the production cost is higher

However, the surface uniformity of hot-rolled pickled steel sheets for general purposes is poor, and the surface color difference after electro-galvanizing is obvious, which cannot meet the requirements of electro-galvanizing.

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