Method for ultrasonic electroplating of aluminum alloy

An ultrasonic and aluminum alloy technology, applied in the field of ultrasonic electroplating of aluminum alloys, can solve the problems of rough coating, low bonding force, slow deposition speed, etc. The effect of increased efficiency and deposition rate

Inactive Publication Date: 2013-10-02
中山市珑智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

The traditional aluminum alloy tin-plated electroplating deposition speed

Method used

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  • Method for ultrasonic electroplating of aluminum alloy
  • Method for ultrasonic electroplating of aluminum alloy
  • Method for ultrasonic electroplating of aluminum alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method of ultrasonic electroplating aluminum alloy, comprising the following steps:

[0030] (1) Pre-plating treatment: specifically including ultrasonic degreasing, first water washing, activation, and second water washing.

[0031] (2) One-time zinc precipitation: commercially available quaternary alloy zinc precipitation solution is used, the zinc precipitation time is 70S, and the temperature is 20 °C.

[0032] (3) Ultrasonic electroplating nickel, the specific formula and operating conditions are as follows:

[0033] The plating solution contains nickel sulfate 310g / L

[0034] Nickel chloride 60g / L

[0035] Boric acid 50g / L

[0036] PH4.5-5 of the plating solution

[0037] The temperature is 20-30°C

[0038] The cathode current density is 2.3A / dm 3

[0039] Anode is pure nickel plate

[0040] Plating time is 6min

[0041] Ultrasonic power is 400w

[0042] Ultrasonic frequency is 40kHz.

[0043] (4) Ultrasonic acid copper plating, the specific formula a...

Embodiment 2

[0077] The difference between this embodiment and Embodiment 1 lies in that in step (3) ultrasonic nickel plating, the electroplating time is 8 minutes, the ultrasonic power is 500w, and the ultrasonic frequency is 33kHz.

Embodiment 3

[0079] The difference between this embodiment and the embodiment 1 lies in that in the step (4) of ultrasonic acid copper plating, the electroplating time is 10 minutes, the ultrasonic power is 400w, and the ultrasonic frequency is 40kHz.

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Abstract

The present invention discloses a method for ultrasonic electroplating of an aluminum alloy. The method sequentially comprises the following steps: a pre-plating treatment, one time zinc deposition, ultrasonic electroplating of nickel, ultrasonic electroplating of acid copper, ultrasonic electroplating of tin, and a post-plating treatment. With the method, after a tin layer is electroplated on an aluminum alloy, the obtained tin layer has advantages of compact and uniform surface, fine crystal, silver white color, bright mirror surface, oxidation resistance, corrosion resistance and strong weldability.

Description

technical field [0001] The invention relates to the technical field of electroplating, in particular to a method for ultrasonically electroplating aluminum alloys. Background technique [0002] The sound wave with f greater than 20kHz is ultrasonic wave, which has high frequency, short wavelength, good directionality of propagation and strong penetrating ability. When the ultrasonic wave acts on the liquid medium, the ultrasonic wave travels forward in a dense and dense manner, causing the liquid to vibrate, causing the medium molecules to vibrate around their equilibrium position. In the ultrasonic compression phase, the average distance between the medium molecules decreases, while in the ultrasonic sparse phase, the average distance between the medium molecules increases. If the sound intensity is large enough, the corresponding negative pressure on the liquid is also strong enough, and the average distance between molecules increases to exceed the limit distance, result...

Claims

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Application Information

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IPC IPC(8): C25D5/12C25D5/20C25D5/44
Inventor 李吉昌何锦波李平辉
Owner 中山市珑智金属表面处理有限公司
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