When contacting the PCB circuit board with your hands, if you do not wear a special glove, you will leave your fingerprints, and then it will cause bad scrap and end user reliability of the PCB line board. The disadvantages of the finger printed in the PCB circuit board manufacturing process: 1. The naked hand touchpad before welding will cause the welding block, resulting in the poor adhesion of green oil, which will fall off at the normal normal air; In the process of blocking the golden circuit board until the process before the packaging, the naked hands touching the circuit board surface will cause the circuit board surface to be unclean and cause poor welding, or the states are not good; 3. Nude matterTouching the circuit board in a very short period of time, the copper reaction of the plate surface has a chemical reaction, causing the copper surface to oxidize. After a little time, there are obvious fingerprints after electroplating, and the plating layer is not smooth, causing serious bad in the appearance of the product. / The adhesion of the wet membrane decreases, which causes the seepage and coating to separate the seepage during electroplating. The golden plate is easy to cause the plate surface pattern. After the production of the welding is completed, the surface of the surface is oxidized and the yin and yang color appears.

  If the above phenomenon is not standardized to eliminate, the qualification rate of damaging the product, the pass rate at one time, will cause a long production and processing cycle, the high replacement rate, and the low -time delivery rate. cooperate. Finger printing actually refers to the sweat stains on the hand, mainly water, inorganic salts and some oil dirty. Therefore, how to prevent the naked hand contact board of the circuit board manufacturer is the key to fingerprints: requires each employee to develop a good setting habit; carry gloves and finger sleeves; , Wording to teach and establish an image. As a PCB circuit board manufacturer, the above is the harm of the "finger seal" shared by the editor of the Honglian Circuit. Improvement, efficient, and win -win ", increase product production rate, and realize the two -way choice of customer win -win.