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Method for preparing high interfacial strength nickel-zinc plating steel belt

A steel strip and nickel-plating technology is applied in the field of preparation of high-performance corrosion-resistant nickel-zinc-plated steel strips, which can solve the problems of reduced anti-corrosion performance, peeling off of thick coatings, and high rate of exposed iron, and improve the interface bonding force. , the surface is smooth and bright, the effect of high mechanical performance

Inactive Publication Date: 2009-02-04
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing technology mainly focuses on the electrodeposition of thin nickel coatings, so that in some processes such as deep rolling and deep drawing, the substrate is easily exposed because the coating is too thin; and because the interface between the thick coating and the substrate Thick coatings are prone to coating peeling and peeling due to excessive stress or improper heat treatment process
The diffusion layer of the existing nickel-clad steel strip is mainly Fe-Ni or Fe-Ni-C diffusion layer, which has a high iron exposure rate, which is easy to reduce the anti-corrosion performance, and the heat treatment process is not suitable, and it is easy to form a phase boundary at the interface. The interface mechanical properties of engineering materials are extremely harmful
In addition, a good matching relationship cannot be formed in terms of elongation, tensile strength, and hardness
The deficiency of these nickel-coated steel strips makes it not widely used in many fields.

Method used

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  • Method for preparing high interfacial strength nickel-zinc plating steel belt
  • Method for preparing high interfacial strength nickel-zinc plating steel belt
  • Method for preparing high interfacial strength nickel-zinc plating steel belt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The base belt is common common Q235 low carbon steel in the market, the thickness is 0.3mm, the chemical composition: C is 0.14%~0.22%, Mn is 0.30%~0.65%, Si is 0.3%, S is 0.050%, P is 0.045 %.

[0035]1) Degreasing the cold-rolled low-carbon steel strip, the degreasing is alkali cleaning and electrolytic degreasing, and the alkaline cleaning is to put the cold-rolled low-carbon steel strip in a solution tank for chemical degreasing to remove the cold-rolled low-carbon steel Grease with surface, chemical degreasing solution composition is sodium hydroxide 50g / L, sodium carbonate 35g / L, sodium phosphate 25g / L, solution temperature 70°C, current density 4A / dm 2 , Degreasing time 5min. Electrolytic degreasing is to place the cold-rolled low-carbon steel strip in a solution tank for electrochemical degreasing to further remove the residual grease on the surface. The components of the electrolytic degreasing solution are sodium hydroxide 50g / L, sodium carbonate 35g / L, and s...

Embodiment 2

[0047] 1) Degreasing the cold-rolled low-carbon steel strip, the degreasing is alkali cleaning and electrolytic degreasing, and the alkaline cleaning is to put the cold-rolled low-carbon steel strip in a solution tank for chemical degreasing to remove the cold-rolled low-carbon steel For grease with surface, the chemical degreasing solution consists of sodium hydroxide 52g / L, sodium carbonate 36g / L, sodium phosphate 26g / L, solution temperature 72°C, current density 5A / dm 2 , Degreasing time 6min. Electrolytic degreasing is to place the cold-rolled low-carbon steel strip in a solution tank for electrochemical degreasing to further remove the residual grease on the surface. The components of the electrolytic degreasing solution are sodium hydroxide 52g / L, sodium carbonate 36g / L, and sodium phosphate 42g / L, sodium silicate 3g / L, solution temperature 58°C, current density 5A / dm 2 , Degreasing time 4min.

[0048] 2) The cold-rolled low-carbon steel strip after degreasing is plac...

Embodiment 3

[0059] 1) Degreasing the cold-rolled low-carbon steel strip, the degreasing is alkali cleaning and electrolytic degreasing, and the alkaline cleaning is to put the cold-rolled low-carbon steel strip in a solution tank for chemical degreasing to remove the cold-rolled low-carbon steel For grease on the surface, the chemical degreasing solution consists of sodium hydroxide 58g / L, sodium carbonate 39g / L, sodium phosphate 29g / L, solution temperature 78°C, current density 6A / dm 2 , Degreasing time 8min. Electrolytic degreasing is to place the cold-rolled low-carbon steel strip in a solution tank for electrochemical degreasing to further remove the residual grease on the surface. The components of the electrolytic degreasing solution are sodium hydroxide 58g / L, sodium carbonate 39g / L, and sodium phosphate 44g / L, sodium silicate 3.8g / L, solution temperature 63°C, current density 5.5A / dm 2 , Degreasing time 5.5min.

[0060] 2) The cold-rolled low-carbon steel strip after degreasing...

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Abstract

The invention discloses a preparation method of a high interface strength nickel-zinc plated steel strip, which relates to a steel strip, in particular to a preparation method of a high-performance corrosion resistant nickel-zinc plated steel strip which consists of a nickel-zinc plated thick cladding layer and a low-carbon steel strip which are tightly integrated, and can be used in chemical industry, machinery, communication device and other industries. The cold rolled low-carbon steel is deoiled; the deoiled cold rolled low-carbon steel strip is put in a solution tank, and plated with a zinc layer; the zinc-plated low-carbon steel strip is put in another solution tank to be plated with a nickel layer; the nickel-plated low-carbon steel strip is put in a third solution tank to be passivated; the temperature of the passivated plated nickel-zinc layer steel strip is preserved, and the hydrogen in the plated layer is removed; the plated nickel-zinc layer steel strip with hydrogen removed receives diffusion annealing treatment; the plated nickel-zinc layer steel strip after diffusion annealing receives distressing heat treatment, and the high interface strength plated nickel-zinc steel strip is obtained.

Description

technical field [0001] The present invention relates to a steel strip, in particular to a high-performance corrosion-resistant nickel-zinc plated steel which is closely combined with electroplated nickel-zinc thick coating and low-carbon steel strip and can be used in chemical industry, machinery, communication equipment and other industries Belt preparation method. Background technique [0002] U.S. Patent No. 5,679,181 discloses a production process for a corrosion-resistant nickel-coated steel strip. The process is nickel-plated on at least one side of a cold-rolled steel strip, so that part or all of the nickel coating becomes an iron / nickel diffusion layer, and the iron on the surface of the nickel-plated layer is The exposure rate accounts for 4% to 30%. [0003] U.S. Patent US4910096 discloses a nickel-plated cold-rolled steel strip with deep diffusion. The steel strip is to electrodeposit a 1-6 μm nickel layer on the cold-rolled steel strip, and then plate a 0.01-1....

Claims

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Application Information

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IPC IPC(8): C25D5/12C25D5/26C25D5/36C25D5/48
Inventor 刘兴军李伟生王翠萍黄艺雄张锦彬
Owner XIAMEN UNIV
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