source:Other information release time:2023-02-07 Hits: Popular:PCB Assembly company
Welded welding is a layer of ink printed on the surface of the PCB surface. It not only plays an insulating role, but also protects the copper surface. It also plays a beautiful and beautiful role. Any flaws of it are easily discovered, so welding is also the most easy process in all processes to attract customer complaints. In the PCB welding process, you may also encounter various quality problems with smart and sophisticated.
Question: penetration, blur
Reason 1: The viscosity of the ink is too low.
Improvement measures: improve the concentration without diluing.
Reason 2: Silk printing pressure is too large.
Improvement measures: Reduce stress.
Reason 3: Poor glue scraping.
Improvement measures: Replace or change the angle of glue scraping.
Reason 4: The distance between mesh and printing surfaces is too large or too small.
Improvement measures: Adjust the distance.
Reason 5: The tension of the silk printing network becomes less.
Improvement measures: Re -make new online versions.
Question: sticky Filin
Reason 1: The ink is not baked and dry
Improvement measures: Check the degree of drying ink
Reason 2: Pumping is too strong
Improvement measures: Check the vacuum system (without guidance)
Question: Poor exposure
Reason 1: Poor vacuum is poor
Improvement measures: Check the vacuum system
Reason 2: The exposure energy is not suitable
Improvement measures: Adjust the appropriate exposure energy
Reason 3: Excessive temperature of the exposure machine is too high
Improvement measures: Check the temperature of the exposure machine (below 26 ° C)
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TG150 Halogen Free Fr4 PCB Board Double Sided 1.6mm 6mil Immersion Gold
Immersion Gold Single Sided Copper Clad Board 2.0mm FR4 HASL OSP
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+86 13715096176
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