/Pcb manufacturing workshop working environment requirements
PCB manufacturing assembly production equipment is a high-precision electromechanical integration equipment. Equipment and process materials have certain requirements for environmental cleanliness, temperature and humidity. In order to ensure the normal operation of equipment and the quality of pcb assembly, the following requirements are imposed on the working environment.
The workroom is kept clean and free of dust and corrosive gases. The air cleanliness is 100000 (BGJ73-84);there must be a certain amount of fresh air in the air-conditioning environment,, try to control the CO2 content below 1000*10 minus six, and the CO content is controlled below 10*10 minus six to ensure Human health.
The environment temperature of the Pcb manufacturing assembly workshop is optimized at 23 °C ± 3 °C. Generally, it is 17 °C-28 °C, the limit temperature is 15-35 °C (the best environment temperature of the printing workshop is 23 °C ± 3 °C)
The relative humidity is RH45%-70%.
According to the above conditions, due to the dry climate in the north and the large wind and sand, the SMT production line in the north needs to use double-glazed workshops, generally equipped with air conditioning.
Pcb assembly reflow soldering process requires that the pads of both chip components should be independent pads. When the pad is connected to a large-area ground wire, the cross-laying method and the 45 ° -laying method should be preferred; the wire drawn from the large-area ground wire or the po...
A very strange phenomenon has recently been discovered. Many companies are currently consulting with PCBA to manufacture this piece, some are very professional and some do not understand. It is equivalent to the South Pole and the North Pole. I roughly analyzed what might be because the current s...
Medical robots refer to the role of intelligent devices to replace some people. For example, surgical robots, rehabilitation robots, etc. Medical robots are essentially intelligent devices, but they can independently operate some plans through programs compiled by engineering personnel. For some ...