A production method of high r value low carbon aluminum killed ferrite rolling

Abstract

The invention provides a production method of ferrite rolling with high r value and low carbon aluminum killed steel. The method comprises the following steps: continuous casting of slabs, heating of hot-rolled slabs, rough rolling, hot coil box, finishing rolling, layering flow, hot-rolled coiling, cold-rolled pickling, cold-rolled, continuous annealing, tempering, and recoiling; the chemical composition and weight percentage of the low-carbon aluminum-killed steel are: C: 0.01-0.06Wt%, Si: ≤0.06Wt %, Mn: 0.1-0.25Wt%, P: ≤0.020Wt%, S: ≤0.015Wt%, Alt: 0.020-0.0450Wt%, and the balance is Fe and unavoidable trace elements. In the continuous annealing production line, high r-value low-carbon aluminum-killed ferritic zone hot-rolled cold-rolled coils are produced, among which the r-value of DC01 is 1.5-1.8, the r-value of SPCC is 1.2-1.4, and the r-value basically reaches conventional austenite The r-value level of the finished product of the rolling process fully meets the needs of users.

Description

technical field [0001] The invention belongs to the field of iron and steel production and manufacturing, and in particular relates to a high r-value low-carbon aluminum-killed ferrite rolling production method. Background technique [0002] The ferrite rolling process (also known as warm rolling, Warm Rolling) was developed by the Belgian Iron and Steel Research Center in the late 1980s, with the aim of producing a cheap, soft steel that can be used directly or for subsequent cold rolling production. , Non-aging hot-rolled sheet, which has attracted widespread attention and research from scholars from all over the world. [0003] Compared with the traditional austenitic rolling process, the ferritic rolling process has obvious advantages. The reduction of heating temperature saves energy costs, reduces the formation of scale and wear of rolls, and improves the yield. The equipment load under the process is lower than that of the austenitic rolling process, which reduces th...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that the r value of the finished coil is too low during the ferrite rolling of conventional low-carbon aluminum killed steel (0.01%-0.06% carbon content)

Images