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Method for removing oxide layer on surface of golden finger

A technology of surface oxidation and gold finger, which is applied in the field of gold finger treatment, can solve problems such as limited effect, product damage, and inability to remove the surface oxide layer, so as to achieve the effects of improving service life, high removal efficiency, and increasing anti-oxidation performance

Pending Publication Date: 2021-02-02
SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a method for removing the oxide layer on the surface of the gold finger, which solves the problem that the conventional wiping method of the gold finger cannot fundamentally remove the surface oxide layer, and can only remove surface dust, and the effect is limited. In addition, the disclosed laser cleaning The method is suitable for removing the oxide layer on the surface of ordinary metal parts and equipment, but not for golden finger parts, which will lead to technical problems of direct damage to the product

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  • Method for removing oxide layer on surface of golden finger

Examples

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Effect test

Embodiment 1

[0038] An embodiment of the present invention provides a method for removing an oxide layer on the surface of a gold finger, including:

[0039] S1. Perform preprocessing on the gold fingers to be cleared, including the following sub-steps:

[0040] S1a, using ethanol to wipe the gold finger to be removed;

[0041] S1b, using hydrofluoric acid, ammonium fluoride, and water to prepare a cleaning solution in a weight ratio of 0.5:2:20;

[0042] S1c, immerse the golden finger in the cleaning solution for a preset time, and the preset time is 10 seconds;

[0043] S1d, washing the gold finger with pure water, and drying the gold finger;

[0044] S2, setting scanning parameters according to the length, width and position distribution of the golden finger;

[0045] S3. Set the laser parameters according to the distribution of the oxide layer, the laser parameters include: laser wavelength 1064nm, laser energy density 50mJ / cm 2 , scanning rate 0.1mm / s, scanning frequency 1 time; ...

Embodiment 2

[0052] An embodiment of the present invention provides a method for removing an oxide layer on the surface of a gold finger, including:

[0053] S1. Perform preprocessing on the gold fingers to be cleared, including the following sub-steps:

[0054] S1a, using ethanol to wipe the gold finger to be removed;

[0055] S1b, using hydrofluoric acid, ammonium fluoride, and water to prepare a cleaning solution in a weight ratio of 3:5:40;

[0056] S1c, immersing the golden finger in the cleaning solution for a preset time, the preset time is 60 seconds;

[0057] S1d, washing the gold finger with pure water, and drying the gold finger;

[0058] S2, setting scanning parameters according to the length, width and position distribution of the golden finger;

[0059] S3. Set the laser parameters according to the distribution of the oxide layer, the laser parameters include: laser wavelength 1064nm, laser energy density 200mJ / cm 2 , scanning rate 2mm / s, scanning frequency 6 times;

[0...

Embodiment 3

[0066] An embodiment of the present invention provides a method for removing an oxide layer on the surface of a gold finger, including:

[0067] S1. Perform preprocessing on the gold fingers to be cleared, including the following sub-steps:

[0068] S1a, using ethanol to wipe the gold finger to be removed;

[0069] S1b, using hydrofluoric acid (purity 40%), ammonium fluoride (purity 96%), and water to prepare a cleaning solution in a weight ratio of 1:3:25, stir evenly during the preparation process, and then let stand for 20 minutes;

[0070] S1c, immerse the gold finger in the cleaning solution for a preset time, the preset time is 30 seconds;

[0071] S1d, washing the gold finger with pure water, and drying the gold finger;

[0072] S2, setting scanning parameters according to the length, width and position distribution of the golden finger;

[0073] S3. Set the laser parameters according to the distribution of the oxide layer. The laser parameters include: laser wavelengt...

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Abstract

The invention provides a method for removing an oxide layer on the surface of a golden finger, and belongs to the technical field of golden finger treatment. The method comprises the main steps of golden finger pretreatment, scanning parameter setting, laser beam scanning and the like. According to the method, firstly, the surface metal oxide layer is removed through corrosion of an acid cleaningsolution, and an active surface is exposed; then, surface scanning is carried out on the golden finger by controlling the energy density, the scanning line width, the scanning rate and the like of a common solid laser, and the oxide layer is further removed; and meanwhile, the surface is flattened, the surface oxidation resistance and the electrical performance of the golden finger are improved, more importantly, a metal coating and a PCB on the surface of the golden finger are not damaged, and the service life of parts is prolonged.

Description

technical field [0001] The invention relates to the technical field of gold finger treatment, in particular to a method for removing an oxide layer on the surface of a gold finger. Background technique [0002] Gold finger is a bridge for connection and communication between conventional memory sticks, network cards, hard disks, RAID cards, RISER cards, adapter cards, etc., and computers and server motherboards. Because computers and servers are generally used in daily indoor environments, in the environmental humidity, dust, and electromagnetic environments, gold fingers are prone to surface dust accumulation and oxidation, which affects electrical performance, resulting in ineffective identification of components, and even computers and servers. normal operation. To restore the components to normal use, it is necessary to clean the surface of the gold finger. Conventional cleaning methods mainly include eraser, pencil, sandpaper, etc., which cannot fundamentally remove th...

Claims

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Application Information

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IPC IPC(8): B08B7/00B08B13/00
CPCB08B7/0042B08B13/00
Inventor 胡夕伦安妮
Owner SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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