7. The air separation unit will conduct air separation classification of the materials after the second iron removal, and separate the light materials. The separated metal powder and heavy materials will be transported to the next process; 8. The high-voltage electrostatic separation unit separates resin fiber from metal powder and heavy material through secondary separation [...]
Key words: circuit board cleaning, circuit board cleaning, PCBA circuit board water-based cleaning, PCBA circuit board water-based cleaning, water-based cleaning technology Introduction: electronic circuit board to achieve water-based cleaning components in the current electronic manufacturing process to achieve the direction of high reliability technical requirements and safe and environmental protection operation mode. This paper discusses [...]
Abrasives abrasive, brush material To clean before the board face and brush copper surface grinding all kinds of used materials, such as polymer nonwoven fabric, nonwoven or mixed with silicon carbide, or the sand of various materials, free and Pumice (Pumice Slurry) are referred to as Abrasives. However, this mixed with coated sand brush material, [...]
The circuit board of inverter mainly includes power board, control board, drive board and panel. A, resistance Resistance in the circuit boards with the letter "R" said, the unit has: ohm (Ω), qian Ω (K), megohm Ω (M) Resistance symbol means: 1. According to the characteristics of resistance value, it can be divided into fixed [...]
PCB circuit boards, also called printed circuit boards, printed circuit board, is an important electronic components, electronic components to support the body, is the carrier of electronic electrical connection, with insulating board base material, cut into a certain size, with at least one conductive graphics, and cloth have a hole (such as component hole, fastening [...]
Circuit board of the issues that need to be from the brazing technology, brazing adopts the liquidus temperature is lower than the base solidus temperature of solder metal materials, components and solder will be heated to melt solder, using liquid solder wetting parent metal, filling and joint clearance with parent metal dissolution and diffusion, and [...]
Childhood believe that we have played the kind of game shown in the picture below, small make up to parents to several times in childhood, just bought a game! Although now think it play very single, but it is we can not go back to the good memories of childhood! console This kind of game [...]
In order to ensure the quality of the appearance of the circuit board and, the surface of the circuit board PCB assembly have high request for smoothness, high flatness, fine lines, high precision of the circuit board baseplate surface defect is strict, especially for substrate flatness requirement is more strict, SMB warp degree requirements of [...]
First, the failure caused by capacitor damage is the highest in electronic equipment, especially in the electrolytic capacitor damage is the most common. Capacitance damage is shown as: capacity decreases; Total loss of capacity; The leakage; Short circuit. Capacitors play different roles in the circuit and the faults caused by them have their own characteristics. [...]
The specialty is engaged in the electronic product SMT processing welding operator contact every day is printed circuit board, solder and flux related materials, tools, and other work. Therefore, in addition to paying attention to the above electricity safety, operators also need to master the knowledge of this aspect, in order to ensure their safety [...]