High-strength binding band and production method thereof

Abstract

The invention relates to a high-strength binding band and a production method thereof, solving the problems that the existing high-strength steel bands are complex in production method and process, high in control difficulty, high in equipment investment and high in product cost and are not environment-friendly. In the process, the weight percentage of chemical elements of steel is as follows: 0.03-0.25 percent of C, 0.50-2.00 percent of Si, 0.50-2.50 percent of Mn, 0.10-0.20 percent of P, 0-0.015 percent of S, 0.01-0.20 percent of Als, and the balance of Fe and other unavoidable impurities; and the high-strength binding band is obtained by molten iron steelmaking, hot rolling, cold rolling and blue annealing, wherein in the blue annealing process, the annealing temperature is controlled to be 450-600 DEG C, the temperature of a lead bath furnace is controlled to be 400-550 DEG C, and the band speed is controlled to be 5-7m / min. In the invention, the process control is simple, the cost is low, environmental pollution is less, the performances are better, the process is simple and convenient as well as feasible, the production efficiency is high, and the tensile strength reaches 980MP.

Description

technical field [0001] The invention relates to a strap and a manufacturing method thereof, in particular to a high-strength strap and a manufacturing method thereof. Background technique [0002] High-strength strapping is a thin strip-shaped steel product that ensures safe loading, unloading and transportation of goods. It is widely used in the packaging of steel, non-ferrous metals, light textile products, building materials, glass, tobacco, paper rolls, wool and other goods. High-strength strapping generally requires "tensile strength not less than 930MPa, elongation not lower than 8%, and good corrosion resistance" in terms of performance. In addition, due to long-term work in outdoor environments, strapping is required to have certain corrosion resistance. performance. [0003] According to the preliminary analysis of Baosteel and other large comprehensive iron and steel enterprises, every 1,000 tons of steel consumes an average of 1 ton of strapping. Among the 500 mi...

AI Technical Summary

Problems solved by technology

[0005] The patent publication number is CN 101781735A, which discloses an "economical high-strength strapping steel with tensile strength ≥ 1000MPa and its manufacturing method", which is designed with the composition of C and Mn, and the weight percentage component is: C: 0.3-0.4% , Mn: 1.3-1.9%, Si: ≤0.42%, S: ≤0.03%, P: ≤0.02%, Al: ≤0.03%, using steelmaking process, hot rolling process, cold rolling process and blueing annealing process, Wherein P as an impurity control requirement is not higher than 0.02%, those skilled in the art know that the lower the content of P is controlled, the higher the difficulty of its control process, resulting in increased costs

And its strength and impact toughness are not significantly improved

Images