A production method of a high-strength ultra-thin painted strap with a thickness of 0.40 mm

Abstract

The invention relates to a high-strength ultrathin painting binding band with thickness of 0.40mm. The high-strength ultrathin painting binding band comprises the components by weight percent: 0.10-0.20% of C, 0.50-1.50% of Mn, less than or equal to 0.010% of Si, less than or equal to 0.010% of P, less than or equal to 0.010% of S, 0.020-0.050% of Nb and 0.040-0.080% of Als. A production method of the high-strength ultrathin painting binding band comprises the steps of smelting and carrying out continuous casting to form a blank, and heating the casting blank; carrying out rough rolling; carrying out finish rolling; winding; carrying out conventional acid pickling; carrying out cold rolling; and preparing the band. The high-strength ultrathin painting binding band has the thickness of 0.40mm, the tensile strength of more than or equal to 1000MPa, the percentage elongation of more than or equal to 12% and the alternating bending times of not less than 10 times (R=5mm), and is free from the phenomenon of brittle failure. An even and compact paint film with the thickness of 0.4-0.6mu m is formed on the surface of the product; after being arranged in the indoor atmospheric environment, the high-strength ultrathin painting binding band is not obviously rusted within 60 days.

Description

technical field [0001] The invention relates to a strap and a production method thereof, in particular to a high-strength ultra-thin painted strap and a production method thereof. Background technique [0002] High-strength ultra-thin lacquered strap is a cold-rolled deep-processed product with broad market prospects, and is widely used for bundling and packaging of fragile products such as porcelain and glass. It should have "thickness of 0.30~0.40mm, tensile strength of not less than 980MPa, elongation of not less than 12%, repeated bending times of not less than 10 times (R=5mm), no delamination and brittle fracture, corrosion resistance Good" and other characteristics. [0003] Porcelain, glass and other light industrial products are prone to fall and break when subjected to external force. In order to improve the stability of these items during transportation and storage, they must be bound with straps. Considering that the surface of these items is easily scratched a...

AI Technical Summary

Problems solved by technology

Its shortcomings: First, although the process is simple, the energy consumption is small, and the corrosion resistance of the product is good, but the process has extremely high requirements on the performance of raw materials, and the product quality is unstable; second, the comprehensive mechanical properties of the product cannot reach Requirements for use; third, the thickness of the product is 0.8mm, which will damage these fragile items when bundling

The shortcomings of this document are that the process consumes a lot of energy, pollutes the environment, and because the Si content in the raw steel is high, the surface quality of the product is not good, which affects the adhesion of the paint film, the corrosion resistance is limited, and the service life is not long.

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