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China Pcb Assembly Factory
Jul 25, 2017

PCB is a printed circuit board (that is, Printed Circuit Board referred to), usually on the insulation, according to the intended design, made of printed circuit, printed components or a combination of the two conductive lines known as the printed circuit. Such as Nanjing Sanmen Bay PCB terminal, it provides insulation on the substrate between the electrical components of the conductive connection, known as the printed circuit. This will put the printed circuit or printed circuit board known as the printed circuit board, also known as printed circuit board or printed circuit board.

 China pcb assembly standard PCB on the top of no parts, often referred to as "printed circuit board Printed WiringBoard (PWB)". PCB terminals are available for convenience.

 PCB terminal we can see almost all electronic equipment without it, small electronic watches, calculators, general computer, large computers, electronic communication equipment, military weapon systems, as long as there is no integrated circuits and other electronic devices, The electrical connections between them use PCB terminals. In addition to the fixed variety of small parts, which provide mechanical support for the various electronic components of the integrated circuit assembly is fixed, and the wiring to achieve electrical connection between the integrated circuits and other electronic components connected to or electrically isolated from the electrical characteristics required to provide , Such as characteristic impedance. At the same time for the automatic soldering to provide solder mask graphics; for components, insert, check, repair and provide identification characters and graphics. As electronic devices become more complex, more and more parts are needed, and the lines and parts on the PCB are becoming more and more dense. PCB wiring terminals to the PCB circuit board wiring layout also mentioned a very important role.

 At present, China's pcb assembly (PCB) production ranked first in the world, product quality and technical level has also been greatly improved. However, to make the PCB industry to achieve sustainable development, enterprises must be energy-saving emission reduction, clean production efforts. Recently held in Jiangsu Dafeng "2011 environmental technology seminar", the industry experts from the technical, standard and other aspects of the PCB industry, the management of the "three wastes" given the recommendations.

Environmental protection is imperative

 Printed circuit board production process of solid scrap, waste etching solution generated by the benefits, should be the wealth of enterprises.

 The starting material is PCB CCL (CCL), after the chemical, electrochemical, photochemical, mechanical processes like 50, before they are made of customized printed circuit board, a large amount of solid waste and waste in the production process wastewater , And these solid waste and waste liquid contains a lot of metal and metal ions.

 China Printed Circuit Association (CPCA) Secretary-General Wang Longji to reporters calculations, he said, production of 10,000 square meters of printed circuit boards (by an average of 4 to 6 layers computing), will produce 10.5 tons of solid scrap , Which is about 25% copper; will produce 50 tons of waste etching solution, of which 12% of copper; water 2.25 million tons. China's printed circuit board production in 2010 was 180 million square meters, according to 200 million square meters (including inventory and scrap), resulting in solid scrap copper 25,500 tons of copper production value, the copper price per ton 6.5 Million yuan of calculation, that is 3.413 billion yuan; generated waste etching solution containing 100,000 tons of copper production value, the copper price of 65,000 yuan per ton, that is 6.5 billion; generating waste water 200 million tons per ton of wastewater treatment Fee (excluding equipment investment costs) calculated by 8 yuan, you need 1.6 billion. The enterprise's revenue should be 3.133 billion yuan +65 billion yuan = 9.913 billion yuan. (The difference between the amount of waste and the amount of money that is now available for recycling is the benefit that the enterprise should receive.