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Manufacturing method of nickel palted steel sheet and nickel palted steel sheet prepared therefrom

A steel sheet and nickel-plating technology, applied in manufacturing tools, chemical instruments and methods, heat treatment equipment, etc., can solve problems such as lack of objective analysis methods for alloy layers

Pending Publication Date: 2021-01-19
TCC STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, this method may be an analytical method that lacks objectivity in the result of how thick the alloy layer is.

Method used

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  • Manufacturing method of nickel palted steel sheet and nickel palted steel sheet prepared therefrom
  • Manufacturing method of nickel palted steel sheet and nickel palted steel sheet prepared therefrom
  • Manufacturing method of nickel palted steel sheet and nickel palted steel sheet prepared therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 and Embodiment 10

[0051] As the base steel sheet, a low-carbon cold-rolled steel sheet having the following chemical composition was used.

[0052] -Composition of matrix chemical components: C: 200ppm, Mn: 2700ppm, Si: 10ppm or less, P: 10ppm or less, and unavoidable impurities.

[0053] The prepared steel sheet was subjected to alkaline degreasing, alkaline electrolytic degreasing and pickling (aqueous sulfuric acid), followed by electrolytic Ni plating under the following conditions. The coating weight of Ni plating is different on the top surface and the bottom surface, and is set at 10g / m respectively 2 and 30g / m 2 , and the weight of the Ni-plated layer was determined by measuring the coating weight using an X-ray fluorescence spectrometer (XRF). The composition of the Ni plating solution used herein is as follows.

[0054] -Composition of the plating bath: 200g / L nickel sulfate, 40g / L nickel chloride and 40g / L boric acid

[0055] - pH of the plating bath: 3.2 to 4.5

[0056] -Temper...

Embodiment 2 to Embodiment 9

[0059]

[0060] Ni-plated and heat-treated steel sheets were prepared in the same manner as in Example 1, but the Ni plating weight and heat-treatment conditions for alloying were changed as shown in Table 1 below.

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Abstract

The present invention provides a nickel-plated and thermally-treated steel sheet with excellent corrosion resistance, in which a remaining nickel amount obtained by analyzing an nickel-iron alloy layer using energy dispersive spectrometry (EDS) or electron probe X-ray micro-analysis (EPMA) after pure nickel remaining on the nickel-iron alloy layer was completely removed after the heat treatment for alloying of a nickel plated layer with base iron is 0.1 wt% or more to less than 30 wt% of the total amount of iron and nickel.

Description

[0001] Cross References to Related Applications [0002] This application claims priority and benefit from Korean Patent Application No. 2019-0085752 filed on July 16, 2019, the disclosure of which is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates to a method of manufacturing a nickel (Ni)-plated and heat-treated steel sheet for battery casings and to the nickel-plated and heat-treated steel sheet produced thereby. Background technique [0004] Recently, with the development of electronic devices to wireless devices and the development of eco-friendly transportation, the battery market is also growing. In particular, rechargeable / dischargeable secondary batteries such as cylindrical lithium ion batteries have standardized sizes and are used in various and increasing applications. In recent years, cylindrical lithium-ion batteries have also been applied to various vehicles such as unicycles and trucks, so that the fie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/50C25D5/12C25D7/00H01M50/10
CPCC25D5/50C25D5/12C25D7/00H01M50/10C25D5/36C25D7/04C25D3/12Y02E60/10C25D7/06H01M50/124H01M50/116C21D9/46C22C38/00C25D5/48B32B15/015
Inventor 权泰佑白贤浚金伦汉全峻模
Owner TCC STEEL