Introduction to electric soldering iron welding wire tips and welding essentials
Manual welding process:
1. Pre operation inspection
(1) 3-5 minutes before welding, insert the electric soldering iron plug into the designated socket and check if the soldering iron is heating up. If it is not heating up, first check if the socket is plugged in properly. If it is plugged in properly and still does not heat up, immediately report to the administrator. Do not open the soldering iron at will, and do not touch the soldering iron tip directly with your hands
(2) Iron tips that have been oxidized and have bumps or hooks should be updated to ensure good thermal conductivity; 2. Ensure the quality of the welded object. If a new soldering iron tip is installed, the maintenance paint should be wiped off after heating, and tin should be added immediately for maintenance. The cleaning of the soldering iron should be carried out before the soldering operation. If the soldering iron is not used for more than 5 minutes, the power should be turned off. Sponges should be cleaned thoroughly. Unclean sponges containing metal particles or sulfur-containing sponges can damage the soldering iron tip.
(3) Check if the tin absorbing sponge has water and is clean. If there is no water, add an appropriate amount of water (an appropriate amount refers to water seeping out when the sponge is pressed to half its normal thickness. The specific operation is: after the sponge is completely wet, hold it in the palm of your hand and close your fingers naturally). The sponge should be cleaned thoroughly. Unclean sponges containing metal particles or sulfur-containing sponges can damage the soldering iron tip.
(4) Is the human body and soldering iron reliably grounded, and is the human body wearing an electrostatic ring.
2. Welding steps
The specific operation steps of soldering with a soldering iron can be divided into five steps, known as the five step engineering method. To achieve good soldering quality, it is necessary to strictly follow the five steps shown in the figure below.
Following the above steps for welding is one of the key factors to obtaining good weld points. In actual production, the most common practice of violating the operating steps is that the soldering iron tip does not first come into contact with the workpiece, but first comes into contact with the solder wire. The melted solder drips onto the preheated part of the workpiece, which easily leads to virtual soldering of the solder joint. Therefore, the soldering iron tip must come into contact with the workpiece, and preheating the workpiece is an important means to prevent virtual soldering.
