Soldering components with electric soldering iron is a basic assembly process, which plays a key role in ensuring the quality of electronic products. Here are some key welding points of components.
1.The welding is preferably rosin, rosin oil or acid free flux. Acid flux shall not be used, otherwise the welding place will be corroded.
2.Before welding, scrape the place to be welded with a knife to make it show metallic luster, apply flux, and then apply a layer of solder.
3.When welding, the electric soldering iron should have enough heat to ensure the welding quality and prevent false welding and long-term desoldering.
4.The soldering iron should not stay at the welding place for too long.
5.After the soldering iron leaves the welding place, the welded parts cannot be moved immediately, otherwise the parts are easy to be desoldered because the solder has not solidified.
6.It is better to twist and then tin the connected component wiring.
7.When welding transistors and other devices that are afraid of high temperature, it is best to clamp the lead out pin of the transistor with small flat nose pliers or tweezers, and grasp the time during welding.
8.It is better to use thin low-temperature welding wire for the welding of semiconductor components, and the welding time should be short.
Due to the continuous development of electronic components to miniaturization, it is required to have small solder joints, high welding strength and small heat affected zone around the processing point. The traditional welding technology has poor weld appearance quality, low welding efficiency and poor combination between the weld loop and the weld loop, which is easy to cause "desoldering", so it is difficult to meet the requirements.
The laser can produce real welding, which can melt and mix the materials of all aspects of the contact. Laser soldering machine is a laser welding process that uses laser to act on the surface of the pad connected between electronic components and circuit board, and the laser energy heats the tin to melt instantaneously to form round and full solder joints.
