PCB copper washing method
A technology for PCB board and copper washing, which is used in the cleaning/polishing of conductive patterns, secondary processing of printed circuits, etc., can solve problems such as affecting the processing technology of PCB boards and uneven copper washing effects
Inactive Publication Date: 2018-03-06
GUANGDONG CHAMPION ASIA ELECTRONICS CO LTD
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Problems solved by technology
[0003] In the existing technology, technicians wash copper based on visual observation and experience accumulation, so that the effect of copper washing is uneven, which affects the subsequent processing technology of PCB boards
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0015] A method for washing copper on a PCB board provided by an embodiment of the present invention comprises the following steps:
[0016] S1: Degreasing, removing copper surface oxides and impurities;
[0017] S2: Washing with water, washing away the oxides and impurities removed from the copper surface with water;
[0018] S3: micro-etching, micro-etching the copper surface, remove the old copper on the surface, and expose the new copper surface;
[0019] S4: High-pressure water washing, the copper surface is washed by high-pressure water impact, and the impurities left by micro-etching are removed;
[0020] S5: Circulating water washing, using circulating water for continuous cleaning to remove residual copper oxides and impurities;
[0021] S6: drying, the washed copper is sucked dry, blown dry by strong wind, and dried by hot air in sequence.
[0022] Further, in the S1 step, a degreasing agent is used for degreasing, and the concentration of the degreasing agent is ...
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The invention relates to a PCB copper washing method. The PCB copper washing method comprises the following steps of removing oil, and removing oxide and impurities from the copper surface; performingwater washing, and washing and removing the oxide and impurities removed from the copper surface; performing micro etching on the copper surface to remove the old copper from the surface and to expose a new copper surface; performing high-pressure water washing to clean the copper surface, and removing impurities residue from the micro etching; performing cyclic water washing, adopting circulation water to continuously clean to remove residual copper oxide and impurities; and performing drying in the air, and performing sucking drying, strong air blowing and drying and hot air dry treatment on the washed copper in sequence. A large number of researches and experiments prove that a set of standard high-efficiency copper washing method is created; and in a copper washing process, the copperwashing process can be completed in batches with high quality by virtue of the method, so that the problem of not unified quality caused by experience and technique differences of technicians can beavoided.
Description
technical field [0001] The invention relates to the field of PCB board processing, in particular to a method for washing copper on a PCB board. Background technique [0002] The copper washing process is often used in the plate making and processing of PCB boards to remove oxides and impurities on the copper surface, roughen the copper surface, and enhance the bonding force between the copper surface and photosensitive materials. The main factors affecting copper washing in the process of copper washing are: the concentration of degreasing agent, the speed of degreasing, the temperature of micro-etching, etc. [0003] In the prior art, technicians perform copper washing based on visual observation and experience accumulation, so that the effect of copper washing is uneven, which affects the subsequent processing technology of PCB boards. Contents of the invention [0004] In order to achieve the above object, the present invention adopts the following technical soluti...
Claims
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Login to View More IPC IPC(8): H05K3/26
CPCH05K3/26
Inventor 刘继承李强浦长芬
Owner GUANGDONG CHAMPION ASIA ELECTRONICS CO LTD