Application of Abrasive Wire Brush Roll in PCB Industry_FAQ

In the field of wide line manufacturing in PCB manufacturing, brushes are also widely used, mainly abrasive wire brush rollers, such as line width/line spacing> 200um (8mil), copper foil thickness ≥ 35um, sometimes can be relaxed To> 150um (u003d6mil). Due to its particularly high resilience, the brush roller will not be damaged even when the PCB board is warped or the drill bit is drilled. It will not cause the brush roller to lose stability and instability even if the operator makes mistakes such as forgetting to turn on the cooling water. Brush the circuit board and brush roller. The brush roller **** uses authentic high-quality abrasive brush filaments, and the control of the surface roughness of the grinding is achieved by controlling the particle size of the abrasive contained in the brush filaments. For example, the surface roughness Rz2.5-3.5um can be achieved if the abrasive particle size of 180#SIC brush wire is controlled at the maximum size of 45um, and the abrasive particle size of 320#SIC brush wire can be controlled at the maximum size of 20um. The surface roughness Rz2.0-3.0um can be achieved, and the abrasive grain size in 500#SIC brush filament can reach the surface roughness Rz1.5-2.5um as long as the maximum size is 20um. In view of different processes and different conditions of the same process, it is recommended to choose brush rollers according to the following principles: (SIC stands for silicon carbide, AO stands for alumina) 1. Deburring after drilling, when the burrs are greater than 75um (3mil), use The following combination: 180#SIC+240#SIC2; deburring process after drilling, when the burr>50um (2mil), choose the following combination: 240#SIC+320#SIC3; deburring process after drilling, when the burr>50um (2mil), choose the following combination: 320#SIC+320#SIC4. 2. Pre-treatment of photosensitive film, select the following combination: 320#SIC+500#SIC5, 3, PTH post-processing, select the following combination: 320#SIC+320#SIC　　 4. Green oil (solder-resistant) coating pre-treatment, select The following combination: 500#SIC　5, gold plate (including gold finger) pretreatment, choose the following combination: 800#AO+1000#AO　6, stainless steel plate grinding, choose the following combination: 240#SIC+320#SIC　 7. volcanic ash brush Plate machine, choose pure nylon spring brush 8, flexible plate grinding, choose the following combination: 600#AO+1000#AO Our factory mainly produces special-shaped brushes for industrial machinery, brush rollers, brush trays, brush belts, stainless steel Spring coils, brushes, rubber rollers, sponge suction rollers. It is widely used in industrial machinery cleaning, polishing, dust removal, rust removal, grinding, cleaning, gluing and conveying. The main applicable industries are: glass industry, leather industry, footwear industry, textile printing and dyeing industry, wood industry, furniture industry, electronics (computer) production industry, printing industry, watch industry, galvanized sheet production industry, food and beverage industry, tobacco Cleaning and cleaning brushes for various special industries such as industrial, carton industry, printing industry, lighting appliance cup washing industry, military industry gun washing, highway cleaning and so on. Based on the tenet of striving for survival by quality and seeking efficiency by products, our factory wholeheartedly serves the majority of users. Welcome to log in: www.mxbrushmachinery.com Tel; 05568459779; Contact Xu Shengli