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A kind of preparation method of precision nickel composite steel strip

A clad steel and precision technology, applied in the field of precision nickel clad steel strip preparation, can solve the problems of high porosity and general corrosion resistance of the coating, and achieve the effect of improving the bonding force and improving the performance of the battery

Active Publication Date: 2017-05-03
JIANGSU JIUTIAN PHOTOELECTRIC TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process can effectively control the steel strip bonding phenomenon in the annealing process, the coating has deep diffusion and good bonding force, but the coating has general corrosion resistance and high porosity

Method used

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  • A kind of preparation method of precision nickel composite steel strip
  • A kind of preparation method of precision nickel composite steel strip

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Experimental program
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preparation example Construction

[0019] The invention relates to a method for preparing a precision nickel composite steel strip. The preparation steps are as follows: first select a cold-rolled deep-drawing steel strip as a substrate, the thickness of the substrate is 0.1-0.5mm, and the width is 350-700mm, and then continuous electroplating treatment , annealing treatment and flattening treatment to form a composite steel strip coil.

[0020] Wherein, the process steps of the continuous electroplating nickel treatment include successively: the step of degreasing, the step of electrolytic degreasing, the step of washing with water, the step of pickling, the step of washing with water, the step of alkaline pre-nickel plating, the step of washing with water, the step of pickling Steps, steps of washing, steps of semi-bright nickel electroplating, steps of washing, steps of bright nickel plating, steps of washing and drying. Among them, degreasing, electrolytic degreasing, pickling and other pretreatment steps d...

Embodiment 1

[0030] Choose 0.25*412mm cold-rolled deep-drawing steel strip as the substrate, and enter the continuous electrolytic nickel plating unit for degreasing, electrolytic degreasing, water washing, pickling, water washing, alkaline nickel plating, water washing, pickling, water washing, semi-bright nickel electroplating, water washing , bright nickel electroplating, washing and drying processes to make nickel composite steel strip.

[0031] (1) Use mostly degreasing agents for immersion degreasing, the degreasing agent concentration is 5%, the temperature is 70°C, and the degreasing time is 20s.

[0032] (2) Use mostly electrolytic degreasing agent for immersion electrolytic degreasing, the concentration of degreasing agent is 5%, the temperature is 70°C, the current density is 10A / dm2, the electrolysis time is 20s, and then rinse the board surface with 3-stage countercurrent washing, and then wash with water For circulating water, the conductivity requirement is less than 10us / cm...

Embodiment 2

[0045] Choose 0.25*412mm cold-rolled deep-drawing steel strip as the substrate, and enter the continuous electrolytic nickel plating unit for degreasing, electrolytic degreasing, water washing, pickling, water washing, alkaline nickel plating, water washing, pickling, water washing, semi-bright nickel electroplating, water washing , bright nickel electroplating, washing and drying processes to make nickel composite steel strip.

[0046] (1) with (1)~(10) steps among the embodiment 1;

[0047] (2) Bell-type annealing is adopted, the furnace temperature is 550 degrees, and the annealing time is 8 hours;

[0048] (3) Leveling treatment, the reduction is 1%.

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Abstract

The invention discloses a precision nickel composite steel strip preparation method. The method comprises the following steps of selecting a cold rolled deep drawing steel strip as a substrate, and carrying out continuous electronickelling treatment, annealing treatment and flattening treatment to obtain a composite steel rolled plate. The preparation method realizes coating thickness difference control. The coated thick nickel layer is used as an inner surface of a battery case and is used for improving battery performances. The other coated thin nickel layer is used as an outer surface of the battery case and is a protective coating. Aiming at improving substrate-nickel coating binding force and stamping performances, an annealing treating process needs to be carried out after nickel coating.

Description

technical field [0001] The invention relates to a method for preparing a precision nickel composite steel strip. Background technique [0002] The traditional production process of battery steel shells is to punch steel plates into battery steel shells first, and then barrel nickel plating. However, due to difficult cleaning and poor depth capability, the deep coating of the battery shell is very thin, or even has no coating. The battery made of it The reserve period is short, which can no longer meet the needs of customers. The continuous electroplated nickel coil adopts advanced equipment technology and control system, which can realize the difference thickness control of the coating. One side is plated with a thick nickel layer as the inner surface of the battery case to improve battery performance, and the other side is plated with a thin nickel layer as the outside of the battery case. as a protective layer. In order to improve the bonding force and stamping performan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D7/06C25D5/14C25D5/50C25D5/36C25D3/12
Inventor 路兴浩李国忠曾三荣李建忠
Owner JIANGSU JIUTIAN PHOTOELECTRIC TECH CO LTD