Hot-rolled pickled steel plate for electrogalvanizing and production method thereof

Abstract

The invention provides a hot-rolled pickled steel plate for electrogalvanizing and a production method thereof. The hot-rolled pickled steel plate for the electrogalvanizing is prepared from the components: 0.010-0.080% of C, less than or equal to 0.030% of Si, 0.10%-0.40% of Mn, less than or equal to 0.015% of P, less than or equal to 0.010% of S, 0.020%-0.060% of Al, less than or equal to 0.0050% of N, and the balance of Fe and inevitable impurities. Compared with the prior art, the hot-rolled pickled steel plate for the electrogalvanizing is produced by precisely controlling the componentsin steel and through the processes of hot rolling, pickling and leveling. According to the hot-rolled pickled steel plate produced by the method, in mechanical performance, the yield strength is 200-300MPa, the tensile strength is 320-440MPa, the A50 tensile elongation is greater than or equal to 35%, a surface roughness Ra value is 0.6-1.5[mu]m, the product thickness is 1.5-6.0 mm, the plate shape is good and surface quality is high, the surface color is uniform, and the requirements of the electrogalvanizing can be met.

Description

technical field [0001] The invention belongs to the field of metal materials, and relates to steelmaking, hot rolling, pickling and leveling processes of metal plates (strips), in particular to a hot-rolled pickled steel plate for 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 sh...

AI Technical Summary

Problems solved by technology

[0005] In the prior art, the substrate of electrogalvanizing is cold-rolled steel plate, the production process is long and the cost is high

Images