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Zinc-nickel alloy electroplating process

An electroplating process, zinc-nickel alloy technology, applied in the field of zinc-nickel alloy electroplating process, can solve the problems that cannot meet the requirements of metal protection, and achieve the effect of excellent protection performance and strong corrosion resistance

Active Publication Date: 2016-05-18
鹰普航空科技(南通)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the past, the method of relying on single metal plating could not meet the metal protection requirements of modern industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] a. Degreasing treatment: the plated parts are cleaned in 90g / L NaOH solution at a controlled temperature of 55°C for 5 minutes, then put into a solution containing 80g / L degreasing powder, controlled at a temperature of 55°C, and hot dipped for degreasing After 18 minutes, wash with water until it is neutral, then carry out a second hot-dipping degreasing, carry out ultrasonic degreasing in a solution containing 15g / L degreasing powder for 5 minutes, and perform an anode electrolytic degreasing after washing with clean water. Carry out anodic electrolytic degreasing in the solution of L degreasing powder, the temperature is 55°C, the time is 5 minutes, and the current density is 5A / dm 2 , after washing with hot water at 55°C, carry out secondary anode electrolytic degreasing, and the steps of secondary anode electrolytic degreasing are the same as those of primary anode electrolytic degreasing;

[0017] b. Acid activation treatment: Activate the plated parts after degre...

Embodiment 2

[0023] a. Degreasing treatment: the plated parts are cleaned in 105g / L NaOH solution at a controlled temperature of 60°C for 5.5 minutes, then put into a solution containing 95g / L degreasing powder, controlled at a temperature of 60°C, and hot dipped for degreasing After 19 minutes, wash with water until it is neutral, then carry out a second hot-dipping degreasing, carry out ultrasonic degreasing in a solution containing 25g / L degreasing powder for 5 minutes, and perform anodic electrolytic degreasing after washing with clean water. Carry out anodic electrolytic degreasing in the solution of L degreasing powder, the temperature is 60°C, the time is 5 minutes, and the current density is 5A / dm 2 , after washing with hot water at 60°C, carry out secondary anode electrolytic degreasing, and the steps of secondary anode electrolytic degreasing are the same as those of primary anode electrolytic degreasing;

[0024] b. Acid activation treatment: Activate the plated parts after degr...

Embodiment 3

[0030] a. Degreasing treatment: the plated parts are cleaned in 120g / L NaOH solution at a controlled temperature of 65°C for 6 minutes, then put into a solution containing 110g / L degreasing powder, controlled at a temperature of 65°C, and hot dipped for degreasing After 20 minutes, wash with water to neutrality, and then carry out a second hot dip degreasing, carry out ultrasonic degreasing in a solution containing 35g / L degreasing powder for 6 minutes, perform anodic electrolytic degreasing after cleaning with water, and perform anode electrolytic degreasing in a solution containing 120g / L Carry out anodic electrolytic degreasing in the solution of L degreasing powder, the temperature is 65°C, the time is 6 minutes, and the current density is 6A / dm 2 , after washing with hot water at 65°C, carry out secondary anode electrolytic degreasing, and the steps of secondary anode electrolytic degreasing are the same as those of primary anode electrolytic degreasing;

[0031] b. Acid ...

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PUM

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Abstract

The invention discloses an electroplating process for a zinc-nickel alloy. The electroplating process comprises the following steps of: carrying out zinc and nickel plating after degreasing treatment and acid activation treatment: pre-soaking a plated piece obtained from the acid activation treatment in a sodium hydroxide solution at the concentration of 40-70ml / L for 3-5min, electroplating the plated piece in a plating solution comprising 8g / L of Zn<2+>, 130g / L of NaOH, and 1g / L of Ni<2+> at the temperature of 22-28 DEG C and the current density of 3-4A / dm<2> for 1-1.5 hours, and washing the electroplated piece using clear water at normal temperature for 10-12 minutes; washing the zinc-nickel-plated plated piece by means of ultrasonic wave, bright-dipping the washed zinc-nickel-plated plated piece in a 1.5mg / L hydrochloric acid solution for 60 minutes, washing the bright-dipped plated piece, passivating the bright-dipped plated piece in a 100ml / L passivator at 30 DEG C for 3-5 minutes, washing the passivated plated piece using normal-temperature water for 30-35 minutes, and washing the washed plated piece using pure water for 35-40 minutes; closing the plated piece; drying the closed plated piece, and storing the dried plated piece. The electroplating process disclosed by the invention has the following advantages that the zinc-nickel alloy plating is formed on the surface of the plated piece by means of the electroplating process, the plating comprises two metals, and therefore, the protection performance is excellent and corrosion resistance is stronger.

Description

technical field [0001] The invention relates to a zinc-nickel alloy electroplating process and belongs to the field of electroplating chemical industry. Background technique [0002] In the past, the method of relying on single metal plating could not meet the metal protection requirements of modern industry. Zinc-nickel alloy coating refers to a coating containing two metals, which has better protection performance and stronger corrosion resistance, and is suitable for surface treatment of parts used in harsh environments such as aerospace and automobiles. Therefore, it is necessary to provide a new technical solution to solve the above problems. Contents of the invention [0003] The purpose of the present invention is to provide a zinc-nickel alloy electroplating process with good protection performance and strong corrosion resistance. [0004] In order to achieve the above object, the technical scheme adopted in the present invention is: [0005] The zinc-nickel all...

Claims

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Application Information

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IPC IPC(8): C25D3/56C25D5/34
Inventor 仇莉莉仇士学樊健东永华
Owner 鹰普航空科技(南通)有限公司