Burrs usually occur in processes such as PCB cutting and punching. When cutting, the cutting tool will wear the copper foil to a certain extent when passing through the copper foil layer, resulting in burrs. When drilling, the tool will corrode the edges of the copper foil as it passes through the copper foil layer, forming burrs as well. The presence of burrs can have a negative impact on the PCB. Firstly, it affects the appearance, making the surface of the PCB not smooth and affecting its aesthetics. In addition, burrs can also cause circuit function failure, especially during high-speed signal transmission, where the interference of burrs on the signal is more obvious. When it comes to deburring, many people immediately associate it with washing and grinding. Washing and grinding is the most commonly used deburring method nowadays. Compared with many deburring methods, its advantages lie in low initial investment cost and simple operation. In addition, we can also improve the accuracy of cutting equipment, including cutting speed, tool material and size, change the friction coefficient, make the tool easy to slide during cutting, and thus reduce the generation of burrs. With the continuous improvement of industrial requirements, more and more new methods are being applied to the field of deburring, such as sandblasting, ultrasonic, chemical deburring, etc. The chemical deburring method has many advantages compared to other deburring methods. 1.Efficient and time-saving Compared to traditional processes, chemical deburring has greatly improved processing time. Using this process to remove burrs usually only takes a few minutes, with the shortest being only a few tens of seconds. The specific processing time varies depending on product material, burr size, etc. Due to its high replicability and reliability, the processed products have high precision in terms of precision, color, size, and other aspects. 2.improve the surface smoothness of the product Using this process to treat burrs can also improve the surface smoothness of the substrate. 3.safety and reliability Adopting this process for deburring treatment has the characteristics of safety, reliability, and environmental protection. Safety is mainly manifested in two aspects. Firstly, product safety mainly refers to the high quality assurance of the processed product, which will not change the mechanical properties and physical and chemical properties of the product due to this process. Secondly, operation and personnel safety. This process does not require specialized technical personnel to operate, and operators only need to undergo simple training to take up their positions. Moreover, during operation, only general chemical reagent operation safety needs to be paid attention to.
