Key points about welding

As an important connection process, soldering has different key points and technical requirements in different application scenarios. Here are some key points based on search results:

Selection of soldering iron: The power of the soldering iron should be determined according to the size of the soldering point. Generally speaking, the larger the soldering point area, the greater the required soldering iron power. In electronic production, it is usually more appropriate to choose a soldering iron of about 30W.

Selection of solder and flux: It is recommended to use low-melting-point solder wire and non-corrosive flux such as rosin. Avoid using industrial solder and acid solder oil, as the latter may be corrosive.

Soldering method: Before soldering, the component pins need to be cleaned and tinned (tinned) to remove the oxide layer and other dirt. This helps to improve the quality of soldering and reduce the possibility of cold soldering. When soldering, you should pay attention to controlling the temperature and time, as well as the amount of solder. The correct approach is to use the tinned surface of the soldering iron to contact the soldering point to increase the heat transfer area and speed up the soldering speed.

Inspection after welding: After welding, it is necessary to carefully check whether there is leakage, cold soldering or component short circuit caused by solder flow. For cold soldering, you can use tweezers to gently pull the component pins for detection. If there is looseness, it should be repaired in time.

Welding procedures: In industrial production, welding procedures are important documents to ensure welding quality. It includes requirements for welder qualifications, selection of welding materials, monitoring of welding process, and quality inspection after welding. For example, some welding procedures require that welding work must be performed by welders who have passed the examination and obtained the corresponding certificate, and the welding materials must match the parent material.

In summary, whether it is manual electric soldering iron welding or industrial welding, a series of key points and technical specifications need to be followed. These key points cover a variety of aspects from tool selection, material preparation, welding skills to quality inspection, aiming to ensure welding quality and reliability.