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High-strength cold-rolled electrogalvanized binding strip and production method thereof

An electro-galvanizing, high-strength technology, applied in the electrolytic process, electrolytic components, cells, etc., can solve the problems of large zinc consumption, affecting the adhesion of the zinc layer, and difficult to fully guarantee the plate shape, and achieve the effect of good plate shape.

Inactive Publication Date: 2014-09-17
武汉钢铁有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the C content in the raw steel is high, which will greatly affect the adhesion of the zinc layer
At the same time, through hot-dip galvanizing, zinc consumption is relatively large
In addition, the production is completed by one cold rolling and one annealing process, which makes it difficult to fully guarantee the shape of the product

Method used

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  • High-strength cold-rolled electrogalvanized binding strip and production method thereof
  • High-strength cold-rolled electrogalvanized binding strip and production method thereof
  • High-strength cold-rolled electrogalvanized binding strip and production method thereof

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Embodiment Construction

[0047] The present invention is described in detail below:

[0048] Table 1 is the chemical composition list of each embodiment of the present invention and comparative example;

[0049] Table 2 is the rolling and heat treatment process parameter list of each embodiment of the present invention and comparative examples;

[0050] Table 3 is the electro-galvanizing process parameter and mechanical performance situation list of each embodiment of the present invention and comparative example;

[0051] Table 4 is a list of the corrosion resistance performance of each embodiment of the present invention and comparative examples.

[0052] Each embodiment of the present invention is produced according to the following steps:

[0053] 1) Smelting and continuous casting into slabs, and conventional heating of slabs;

[0054] 2) Hot rolling:

[0055] A, carry out rough rolling, the control rough rolling start rolling temperature is 1140~1220 ℃;

[0056] B, carry out finish rolling,...

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Abstract

The invention discloses a high-strength cold-rolled electrogalvanized binding strip, which comprises the following components in percentage by weight (wt%): 0.05-0.10% of C, 0.40-1.0% of Mn, no more than 0.010% of Si, no more than 0.010% of P, no more than 0.010% of S, 0.40-0.60% of Ti, 0.30-0.70% of Cr, 0.50-0.80% of Ni, and 0.030-0.060% of Als; the production method comprises the following steps: melting and continuously casting into blanks, and conducting conventional cast blank heating; conducting hot rolling; conducting conventional pickling; carrying out secondary cold-rolling and secondary annealing; producing strips. The binding strip is 1.0mm thick, the tensile strength is no less than 1000MPa, the elongation rate is no less than 10%, the number of repeated bending times is no less than 10 (R=5mm), an electrogalvanized layer which is uniform and compact, strong in adhesion strength and is 1.0-2.0mu m thick is formed on the surface of the strip, the strip cannot have obvious rusting for 150 days after being placed in interior atmospheric environment, thus being good in profile, and completely meeting the binding and packaging requirement of a precise and ultrathin cold-rolled steel strip.

Description

technical field [0001] The invention relates to a strap and a production method thereof, in particular to a high-strength cold-rolled electrogalvanized strap and a production method thereof. Background technique [0002] High-strength cold-rolled electro-galvanized strapping is a deep-processing product with high added value and broad market prospects. It is mainly used for bundling precision ultra-thin cold-rolled steel strips. Generally, it should have a thickness of 0.9~1.0 mm and a tensile strength of It is less than 1000 MPa, the elongation is not less than 10%, the number of repeated bending is not less than 10 times (R=5 mm), and it is placed in the indoor atmospheric environment for 150 days without obvious corrosion, etc. [0003] Precision ultra-thin cold-rolled steel strips are mainly used in the manufacture of electronic products such as diodes, triodes, button batteries, and LED brackets. The requirements for surface quality are very high, and there must be no d...

Claims

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Application Information

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IPC IPC(8): C22C38/50C21D8/02C25D21/12C25D7/06C25D3/22
Inventor 黄菲陶军晖张兆丽何振华吴远东王丹
Owner 武汉钢铁有限公司
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