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Ash removal agent for deplating of zinc-nickel alloy electroplated layer and using method

A technology of zinc-nickel alloy and ash removal agent, applied in the field of ash removal agent, can solve the problems of fast volatilization, difficult control and large consumption, etc.

Active Publication Date: 2021-04-13
广东致卓环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the acidic chemical polishing liquid contains active ingredients such as hydrogen peroxide and ammonium bifluoride, which are extremely unstable during the production process, and volatilize quickly, consume a large amount, and are difficult to control

Method used

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  • Ash removal agent for deplating of zinc-nickel alloy electroplated layer and using method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A

[0050] Step (1): add 70% solvent in the tank; add 15% of agent A and 15% of agent B, and stir evenly to obtain ash remover; the specific components of agent A and agent B are shown in Table 1; A agent is made up of following components: the sodium carbonate of 70g / L and the sodium hydroxide of 130g / L; B agent is made up of following components: the sodium chlorate of 25g / L and the sodium dichromate of 40g / L; The solvent is water.

[0051] Step (2): Control the temperature of the deashing agent to 25°C;

[0052] Step (3): Soak the workpiece in the tank for 40 seconds.

[0053] Table 1 - Component distribution of deashing agent

[0054]

[0055] The performance test of table 2-embodiment A

[0056] Example A1 Example A2 Example A3 Example A4 Comparative example A1 Comparative example A2 Comparative example A3 Comparative example A4 Exterior Level 1 Level 1 Level 1 Level 1 Level 1 Level 1 Level 1 level 2 pure water Level ...

Embodiment B

[0063] Step (1): in tank, add 65% solvent; Add 10% A agent and 25% B agent, stir and make deashing agent; A agent is made up of following components: the sodium carbonate of 60g / L and The sodium hydroxide of 140g / L; B agent is made up of following components: the sodium chlorate of 20g / L and the sodium dichromate of 45g / L, solvent is water.

[0064] Step (2): Control the temperature of the deashing agent to 60°C;

[0065] Step (3): Soak the workpiece in the tank for 30 seconds.

Embodiment C

[0067] Step (1): add 75% solvent in tank; Add 5% A agent and 20% B agent, stir and make deashing agent; A agent is made up of following components: the sodium carbonate of 80g / L and The sodium hydroxide of 120g / L; B agent is made up of following components: the sodium chlorate of 30g / L and the sodium dichromate of 30g / L, solvent is water.

[0068] Step (2): Control the temperature of the deashing agent to 50°C;

[0069] Step (3): Soak the workpiece in the tank for 60 seconds.

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Abstract

The invention discloses an ash removal agent for deplating of a zinc-nickel alloy electroplated layer and a using method. The ash removal agent is prepared from the following components of an agent A, an agent B and a solvent, wherein the agent A is prepared from the following components of 40-80g / L of carbonate and 100-140g / L of alkali liquor; the agent B is prepared from the following components of 20-30g / L of a sodium salt removing agent and 30-45g / L of dichromate; the carbonate is sodium carbonate and / or potassium carbonate; the alkali liquor is sodium hydroxide and / or potassium hydroxide; the sodium salt removing agent is sodium chlorate or sodium hypochlorite; and the dichromate is sodium dichromate or potassium dichromate. The using method comprises the following steps of, (1) soaking a workpiece in a tank by using the ash removal agent through the step (1)- (3). The ash removal agent is used for treating a replating workpiece to remove black oxidized ash generated by deplating of the replating workpiece, so that the surface of the replating workpiece is completely consistent with the surface of a previous incoming workpiece in appearance, a base body is not damaged, and replating electroplating can be directly carried out.

Description

technical field [0001] The invention relates to the technical field of ash remover, in particular to an ash remover for deplating zinc-nickel alloy electroplating layer and a usage method. Background technique [0002] After the zinc-nickel alloy electroplating layer is stripped, a layer of black oxide ash is easily produced on the surface, which needs to be removed in an acidic chemical polishing solution. However, the acidic chemical polishing solution contains effective ingredients such as hydrogen peroxide and ammonium bifluoride, which are extremely unstable during the production process, and volatilize quickly, consume a large amount, and are difficult to control. At the same time, after the replating workpiece is acidic chemically polished, it is easy to damage the substrate, and the surface appearance of the treated workpiece is inconsistent with the surface appearance of the incoming workpiece, which increases the difficulty of subsequent replating and electroplatin...

Claims

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Application Information

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IPC IPC(8): C23G1/14
CPCC23G1/14Y02P10/20
Inventor 王世金李树泉谢金平赖彩燕范小玲
Owner 广东致卓环保科技有限公司
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