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Nickel pre-plating process suitable for battery shell steel

A technology of nickel pre-plating and battery case, which is applied in the field of pre-nickel plating of battery case steel, and can solve the problems of excessive corrosion and ineffective activation effect

Inactive Publication Date: 2017-04-19
JIANGSU JIUTIAN PHOTOELECTRIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of excessive corrosion and insignificant activation effect during the on-site battery shell steel pre-nickel plating activation stage, the present invention provides a pre-nickel plating process suitable for battery shell steel. Through this process, the activation effect can be guaranteed and the activation effect can be prevented. Corrosion is excessive, and it can ensure the bonding strength between the pre-plating layer and the strip steel surface, and improve the finished product quality of nickel-plated battery case steel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 1) Chemical degreasing: the strip steel in NaOH concentration of 23g / L, NaCO 3 The concentration is 40g / L, Na 3 PO 4 Chemical oil removal is carried out in a solution with a concentration of 30g / L, the temperature is controlled at 70°C, and the time is controlled at 1min.

[0015] 2) Electrolytic degreasing: put the strip steel in NaOH concentration of 22g / L, NaCO 3 The concentration is 12g / L, Na 3 PO 4 The solution with a concentration of 11g / L uses the steel strip as the cathode to remove oil for 1min, and then in the NaOH concentration of 40g / L, NaCO 3 The concentration is 15g / L, Na 3 PO 4 For a solution with a concentration of 15g / L, use the steel strip as the anode to remove oil for 0.5min;

[0016] 3) Water washing: wash the degreased steel strip with hot water at 73°C for 0.5min and cold water at 12°C for 01min;

[0017] 4) The first activation: the strip in nickel chloride hexahydrate NiCl 2 ·6H 2 In an acidic solution with an O concentration of 240g / L...

Embodiment 2

[0022] 1) Chemical degreasing: the strip steel in NaOH concentration of 22g / L, NaCO 3 The concentration is 40g / L, Na 3 PO 4 Chemical oil removal is carried out in a solution with a concentration of 30g / L, the temperature is controlled at 71°C, and the time is controlled at 1min.

[0023] 2) Electrolytic degreasing: put the strip steel in NaOH concentration of 23g / L, NaCO 3 The concentration is 12g / L, Na 3 PO 4 The solution with a concentration of 11g / L uses the steel strip as the cathode to remove oil for 1min, and then in the NaOH concentration of 40g / L, NaCO 3 The concentration is 14g / L, Na 3 PO 4 For a solution with a concentration of 15g / L, use the steel strip as the anode to remove oil for 0.5min;

[0024] 3) Water washing: wash the degreased steel strip with hot water at 73°C for 0.5min and cold water at 11°C for 01min;

[0025] 4) The first activation: the strip in nickel chloride hexahydrate NiCl 2 ·6H 2 In an acidic solution with an O concentration of 230g / L...

Embodiment 3

[0030] 1) Chemical degreasing: the strip steel in NaOH concentration of 20g / L, NaCO 3 The concentration is 40g / L, Na 3 PO 4 Chemical oil removal is carried out in a solution with a concentration of 30g / L, the temperature is controlled at 69°C, and the time is controlled at 1min.

[0031] 2) Electrolytic degreasing: put the strip steel in NaOH concentration of 19g / L, NaCO 3 The concentration is 12g / L, Na 3 PO 4 The solution with a concentration of 11g / L uses the steel strip as the cathode to remove oil for 1min, and then in the NaOH concentration of 40g / L, NaCO 3 The concentration is 14g / L, Na 3 PO 4 For a solution with a concentration of 15g / L, use the steel strip as the anode to remove oil for 0.5min;

[0032] 3) Water washing: wash the degreased steel strip with hot water at 73°C for 0.5min and cold water at 11°C for 01min;

[0033] 4) The first activation: the strip in nickel chloride hexahydrate NiCl 2 ·6H 2 In an acidic solution with an O concentration of 220g / L...

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PUM

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Abstract

The invention relates to a nickel pre-plating process suitable for battery shell steel. The nickel pre-plating process suitable for the battery shell steel comprises the following process steps: 1) chemical deoiling; 2) electrolytic deoiling; 3) washing with water; 4) primary activation; 5) secondary activation; and 6) pre-plating. Through the process method, the activation effect can be guaranteed, over corrosion can also be prevented, the bonding strength of a pre-plating layer and the surface of strip steel can be guaranteed, and the quality of a finished nickel plated battery shell steel product is improved.

Description

technical field [0001] The invention relates to the field of coating, in particular to a pre-nickel plating process suitable for battery case steel. Background technique [0002] With the development of my country's battery industry, the consumption of high-energy batteries has increased, and the consumption of nickel-plated battery shell steel has also risen sharply. An important process for the production of nickel-plated battery case steel is nickel plating. The nickel-plating process of battery case steel at home and abroad can be roughly divided into two categories, one is nickel plating first and then stamping, and the other is stamping first and then nickel plating. Most of the country adopts the process of stamping first and then nickel plating. The production process of nickel plating first and then stamping is not yet mature in China, especially in the pre-nickel plating process, it is very easy to have problems such as excessive corrosion in the activation stage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/36C25D3/12C23G1/19C25F1/06
CPCC25D5/36C23G1/19C25D3/12C25F1/06
Inventor 李国忠路兴浩曾三荣
Owner JIANGSU JIUTIAN PHOTOELECTRIC TECH CO LTD
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