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Blackening preventing electrogalvanized steel plate and manufacturing method thereof

A technology of electro-galvanized and steel plates, applied in the direction of superimposed layer plating, metal material coating process, coating, etc., can solve the problem of not providing quantitative indicators of electro-galvanized steel sheet products with anti-blackening performance, and not providing anti-blackening performance Electro-galvanized passivation treatment steel plate, electro-galvanized anti-fingerprint steel plate product quantitative indicators and other issues, to achieve the effect of excellent anti-blackening performance, anti-blackening performance, good stamping performance and coating performance

Inactive Publication Date: 2010-02-17
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent only provides a production plan of electro-galvanized passivation-treated steel plate and electro-galvanized anti-fingerprint steel plate with anti-blackening properties. Electro-galvanized passivation-treated steel sheets, electro-galvanized anti-fingerprint steel sheets and their specific quantitative indicators, not to mention electro-galvanized steel sheets with anti-blackening properties and their specific quantitative indicators

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The manufacturing process of the electrogalvanized steel sheet provided by the invention is as follows:

[0033] (1) Pre-plating treatment of steel plate:

[0034] Including steel plate degreasing, pickling, deionized water rinsing and other processes. The existing mature electroplating pretreatment process can be used. The steel plate used is a cold-rolled steel plate after annealing treatment.

[0035] (2) Electrogalvanized steel plate surface:

[0036] The electro-galvanizing process conditions for obtaining the electro-galvanized layer are as follows:

[0037] Plating solution system: Sulfate aqueous solution plating solution system, including ZnSO 4 ·7H 2 O 500±50g / L, the balance is deionized water, adjust pH with sulfuric acid solution: 2.0±0.5.

[0038] The temperature of the plating solution is 53±3°C; the moving speed of the plating solution relative to the steel plate is 2.5m / sec; the current density is 90A / dm 2 ;The thickness of galvanized layer is 20g...

Embodiment 2

[0050] Electrogalvanized steel plate dipped in Ni 2+ In 1g / L acidic solution, soak for 4 seconds, the obtained Ni layer thickness is 0.2mg / m 2 , other with embodiment 1.

Embodiment 3

[0052] Electrogalvanized steel plate dipped in Ni 2+ In the 3g / L nickel chloride acidic solution, the pH of the solution is controlled at 2-4, soaked for 15 seconds, and the thickness of the obtained Ni layer is 0.5mg / m 2 , other with embodiment 1.

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PUM

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Abstract

The invention provides a blackening preventing electrogalvanized steel plate and a method for manufacturing the steel plate. The surface of an electrogalvanized layer of the steel plate is provided with a nickel layer with the thickness of 0.05 to 10 mg / m <2>; and lubricating oil is coated on the external surface of the nickel layer and the thickness of the lubricating oil is 0.3 to 3 g / m <2>. Themethod for manufacturing the steel plate comprises the step of: soaking the electrogalvanized steel plate in an acid solution containing 0.5 to 50 g / L of Ni <2+> for more than one second, or performing cathodic electrolysis processing on the electrogalvanized steel plate through the acid solution containing the Ni <2+> for more than 0.5 seconds. After being added with nickel, the steel plate caneffectively prevent the blackening of the surface of the steel plate and simultaneously has good stamping forming performance and coating performance.

Description

technical field [0001] The invention relates to the field of electrogalvanized steel sheet manufacturing, in particular to an anti-blackening electrogalvanized steel sheet. Background technique [0002] Electro-galvanized steel sheets have superior corrosion resistance and surface quality, as well as good welding performance and coating performance, and are widely used in household appliances, construction, automobiles and other industries. In the actual application of some parts of automobiles, electro-galvanized steel sheets need to undergo more complicated stamping and coating treatments, which requires electro-galvanized steel sheets to have excellent stamping performance. In order to be suitable for stamping processing, in actual use, electro-galvanized steel sheets used in automobiles, especially high-end cars, are generally electro-galvanized steel sheets. This kind of electro-galvanized steel sheet is such a steel sheet: after the cold-rolled steel sheet has been el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/22C25D5/12C23C22/00C23C28/02
Inventor 温乃盟郑建平
Owner BAOSHAN IRON & STEEL CO LTD
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