Substrate for strapping band

Abstract

The invention belongs to the field of ferrous metallurgy materials, in particular relates to a substrate for a strapping band and a production method thereof. The substrate comprises the following chemical components in percentage by weight: 0.14-0.20 percent of C, 0.17-0.37 percent of Si, 0.55-0.75 percent of Mn, less than or equal to not more than 0.035 percent of P,0.01-0.04 percent of AL and the balance of Fe and inevitable impurities, wherein the tensile strength is not less than 7850Mpa, the elongation percentage is not less than 8 percent and the repeated bending times is not less than 8. In the production method, the smelting steps comprises the specific steps of molten iron pretreatment sulfur removal station, top and bottom combined blown converter, LF (Low Frequency) steel ladle refining and slab continuous casting,; the hot rolling steps comprises the specific steps of heating, rough rolling, hot rolling, finish rolling, laminar cooling and reeling; and the cold rolling steps comprises the specific steps of acid pickling, cold rolling and heat treatment. The steel grade has reasonable mixture ratio of chemical components and higher product strength, elongation percentage and repeated bending times compared with national standard. The production method of the substrate can ensure the chemical organization and physical performance of the steel grade.

Description

technical field [0001] The invention belongs to the field of iron and steel metallurgical materials, and in particular relates to a substrate for packing tape and a production method thereof. Background technique [0002] Packing tape is a recyclable and environmentally friendly packaging material. With its corrosion resistance, sturdiness and good toughness, packing tape has been widely used in steel, glass, building materials and other industries. However, since there is no unified standard for the raw materials of packing belts, the production enterprises are often small in scale and weak in technical force, and the raw materials used are highly random, resulting in large performance fluctuations and low yields. The development of new low-cost and stable performance strapping substrate is the development direction of steel for strapping in the future. [0003] At present, domestic enterprises do not have steel types specially used to produce packing belts. Users often us...

AI Technical Summary

Problems solved by technology

[0003] At present, domestic enterprises do not have steel types specially used to produce packing belts. Users often use Q235 or 20MnSi, Q345 and other raw materials. The chemical composition and performance are unstable. The tensile strength, elongation, repeated bending times, thickness tolerance, and Flatness and other fluctuations are large, especially in the steel and glass industries with high requirements. Poor performance can easily lead to accidents such as loose coils and high-altitude falls.