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Processing method for eliminating color difference of nickel and gold layers in nickel and gold plating process

A processing method and nickel-gold plating technology, which is applied in the field of nickel-gold plating, can solve problems such as poor color difference, fogging, and blackening of the nickel-gold layer on the surface of the nickel-gold layer, so as to eliminate quality defects, eliminate surface color difference, and improve product quality Effect

Inactive Publication Date: 2021-09-24
TIANJIN PRINTRONICS CIRCUIT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, during the processing of nickel-gold electroplating equipment, quality defects such as poor color difference on the surface of the nickel-gold layer often occur, that is, the nickel-gold layer after electroplating becomes black and foggy

Method used

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  • Processing method for eliminating color difference of nickel and gold layers in nickel and gold plating process
  • Processing method for eliminating color difference of nickel and gold layers in nickel and gold plating process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] The degreasing agent degreases the surface of the circuit board;

[0062] Clean the residue on the surface of the circuit board with tap water, and wash it twice;

[0063] Soak the circuit board in the micro-etching solution to slightly corrode the surface of the circuit board;

[0064] Clean the residue on the surface of the circuit board with tap water, and wash it twice;

[0065] Pickling the circuit board;

[0066] Cleaning the circuit board with a deionized aqueous solution to wash away the acid solution on the circuit board;

[0067] After a delay of 20 seconds, pass current to the nickel tank and nickel-plate the circuit board;

[0068] Clean the residue on the surface of the circuit board with tap water, and wash it twice;

[0069] Soak the circuit board in the micro-etching solution to slightly corrode the surface of the circuit board;

[0070] Clean the residue on the surface of the circuit board with tap water, and wash it twice;

[0071] Pickling the c...

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PUM

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Abstract

The invention discloses a processing method for eliminating color difference of a nickel-gold layer in a nickel-gold plating process. The processing method comprises the following steps: carrying out acid pickling on a circuit board; and carrying out nickel plating on the circuit board when specific conditions are met. The specific condition is that the circuit board is cleaned; and / or after the preset time, the nickel groove is electrified. Therefore, the blackening and fogging phenomena of the nickel-gold layer after electroplating of the circuit board are avoided.

Description

technical field [0001] The invention relates to the technical field of nickel-gold plating, in particular to a processing method for eliminating the chromatic aberration of the nickel-gold layer by the nickel-gold plating process. Background technique [0002] In the prior art, nickel-gold electroplating equipment uses copper bars as cathode bars, and stainless steel top fixtures are installed on the copper bars, and the top fixtures are used to conduct current conduction with the copper plate edge of the plate to be electroplated, and the crane will hang the copper plate on the printed board The rows are hoisted into the electroplating tank to form a loop; the electroplating of the circuit patterns exposed on the circuit board outside the dry film is realized, and finally nickel gold is electroplated on the copper surface. [0003] However, during the processing of nickel-gold electroplating equipment, quality defects such as poor color difference on the surface of the nick...

Claims

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Application Information

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IPC IPC(8): H05K3/22H05K3/26C25D7/00C25D3/12C25D3/48C25D5/34
CPCH05K3/22H05K3/26C25D7/00C25D3/12C25D3/48C25D5/34
Inventor 王刚
Owner TIANJIN PRINTRONICS CIRCUIT CORP
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