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Plating solution for tumble-plating and tumble-plating method of steel battery shell

A battery steel shell and electroplating solution technology, applied in jewelry, etc., can solve the problems of low strength and poor corrosion resistance of battery steel shells, and achieve the effects of improving corrosion resistance, prolonging storage period, and small porosity

Active Publication Date: 2010-10-20
上海金杨金属表面处理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the above-mentioned deficiencies in the prior art and solve the defects of poor corrosion resistance and low strength of battery steel shells produced by the current nickel plating method, the invention discloses an electroplating solution for barrel plating and a barrel plating method for battery steel shells

Method used

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  • Plating solution for tumble-plating and tumble-plating method of steel battery shell
  • Plating solution for tumble-plating and tumble-plating method of steel battery shell
  • Plating solution for tumble-plating and tumble-plating method of steel battery shell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A. Degreasing before plating:

[0015] i. Degreasing and degreasing:

[0016] Take the unplated steel shell used for LR6 alkaline zinc-manganese battery, put it in the degreasing tank, pour it into the degreasing liquid for washing, the degreasing liquid is based on the complete immersion of the steel shell, the mass of each component of the degreasing liquid The percentage concentration is as follows: 5% sodium hydroxide, 2% sodium silicate, 1% sodium carbonate, 2% sodium dodecylsulfonate, and the balance of tap water.

[0017] When washing, the temperature in the degreasing tank is 40°C, and the washing time is 20 minutes. After washing, it is cleaned with deionized water or tap water with a temperature of 40°C. The above washing-cleaning process is repeated twice.

[0018] ii pickling activation:

[0019] Pickle the steel case of the battery that has been degreased and degreased in step i with an acid solution at room temperature for 1 minute. The acid solution is...

Embodiment 2

[0028] A. Degreasing before plating:

[0029] i. Degreasing and degreasing:

[0030] The mass percent concentration of each component of the oil removal solution is as follows: 7% sodium hydroxide, 5% sodium silicate, 5% sodium carbonate, 3% sodium dodecylbenzenesulfonate, and the balance of tap water.

[0031] The temperature in the degreasing tank is 50°C, and the washing time is 30 minutes. After the washing is completed, it is cleaned with deionized water or tap water at a temperature of 50°C.

[0032] ii pickling activation:

[0033] Pickling for 2 minutes, the acid solution is 25% hydrochloric acid by mass percentage.

[0034] B. Barrel plating:

[0035] Put the steel shell that has completed the degreasing treatment before step A before plating into the barrel plating tank, pour the electroplating solution for barrel plating, and prepare the electroplating solution according to the following requirements:

[0036]

[0037]All the above components were dissolved i...

Embodiment 3

[0040] A. Degreasing before plating:

[0041] i. Degreasing and degreasing:

[0042] The mass percent concentration of each component of the oil removal solution is as follows: 10% sodium hydroxide, 8% sodium silicate, 10% sodium carbonate, 5% sodium dodecylsulfonate, and the balance of tap water.

[0043] The temperature in the degreasing tank is 60°C, and the washing time is 40 minutes. After washing, it is cleaned with tap water at a temperature of 60°C.

[0044] ii pickling activation:

[0045] Pickling for 3 minutes, the acid solution is 45% hydrochloric acid by mass percent.

[0046] B. Barrel plating:

[0047] Put the steel shell that has completed the degreasing treatment before step A before plating into the barrel plating tank, pour the electroplating solution for barrel plating, and prepare the electroplating solution according to the following requirements:

[0048]

[0049]

[0050] All the above components were dissolved in deionized water to form a sol...

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Abstract

The invention relates to a treatment process of a carrier of a device which is used to directly change chemical energy to electrical energy, in particular to a plating solution for tumble-plating and a tumble-plating method of a steel battery shell. The plating solution comprises the following components in parts by weight: 80-120 or 200-350 parts of main salt, 30-100 parts of anode activator, 3-60 parts of buffering agent, 20-30 or 180-250 parts of complexant, 0.5-2.5 parts of stress reducer, 0.005-0.1 part of main brightener and 0.3-1.0 part of auxiliary agent and is prepared by dissolving the components in water. The tumble-plating method of the invention comprises the following steps in turn: degreasing, tumble-plating and bleaching, wherein during tumble-plating, the pH value of the plating solution is 4.0-4.6 or 6.5-8.5, the temperature is 40-70 DEG C, the current density is 0.2-3A / dm<2>, the rotational speed of the drum is 4-12rpm, and the tumble-plating time is 180-300 minutes. The coating of the invention has write and bright appearance, high luminance brightness and powerful corrosion resistance.

Description

technical field [0001] The invention relates to a treatment process for a carrier used in a device for directly converting chemical energy into electric energy, in particular to an electroplating solution for barrel plating and a barrel plating method for battery steel shells. Background technique [0002] At present, alkaline batteries are more and more widely used because of their high capacity, long service life and less environmental pollution. Alkaline battery casings are generally made of steel stamping, as the electrolyte container and the lead-out end of the electrodes, the battery casing requires strong corrosion resistance, good sealing, and excellent conductivity, so battery steel casings are generally nickel-plated to improve Various performance indicators. The battery steel case is a typical blind hole part, and many models are deep hole parts at the same time. However, the requirements for the electroplating layer, such as the degree of bonding between the coa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/14C25D5/04C25D7/00
Inventor 柳依玲顾耀前
Owner 上海金杨金属表面处理有限公司
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