电子制作之经验总结篇（An overview of the experiences in electronic production）.docVIP

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电子制作之经验总结篇（An overview of the experiences in electronic production）.doc

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电子制作之经验总结篇（An overview of the experiences in electronic production） An overview of the experiences in electronic production Welding is essential in the process of making electronic products. It requires not only the element is fixed on the circuit board, and solder joints must be firm, smooth, so welding technology directly affects the success of electronic production, so the welding technology is the basic skills of each electronic production enthusiasts must master, will now introduce the welding points: 1. the choice of electric iron The power of the soldering iron shall be determined by the size of the welding point, the area of the solder joint is large, and the heat dissipation rate of the solder joint is also fast, so the power of the electric iron to be selected should be greater. The power of the general electric iron is 20W, 25W, 30W, 35W, 50W and so on. In the production process, about 30W power is appropriate. The electric iron used for a long time, the head will generate a layer of iron oxide, then it is not easy to eat tin, then you can use a rasper oxide layer, the electric iron after iron head micro insert coated with rosin, solder can continue to use the electric iron, the newly bought must first and then tin in order to use. 2. solder and soldering flux The low melting point solder wire and non corrosive flux, such as rosin, solder and acid should not be used in industrial welding oil corrosive, the best use of solder with rosin, it is very convenient to use. 3. welding method Components must be clean and tin plating, electronic components stored in the air, due to oxidation, the component pin attached to a layer of oxide film, and other dirt, use a knife to scrape off the film before welding, and immediately coated with a layer of solder (commonly known as tin), and then in welding. After the process components are easy to weld, not prone to the phenomenon. Welding temperature and welding time When soldering, the temperature of the electric iron s