Constant temperature soldering iron skills
First, the treatment of the new constant temperature electric soldering iron before use:
The new constant temperature electric soldering iron can be used normally after the soldering iron head is coated with a layer of solder before use. When the constant temperature electric soldering iron is used for a period of time, a layer of oxide layer will be formed on the blade surface of the soldering iron head and around it, which will cause "eating tin". "Difficult phenomenon, at this time the oxide layer can be filed off and re-plated with solder.
Second, the grip method of the constant temperature electric soldering iron:
a. Reverse grip method: use five fingers to hold the handle of the constant temperature electric soldering iron in the palm. This method is suitable for high-power constant-temperature electric soldering iron, welding parts with large heat dissipation.
b. Forward grip method: hold the handle of the constant temperature electric soldering iron with four fingers except the thumb, and press the thumb firmly along the direction of the electric soldering iron. The electric soldering iron used in this method is also relatively large, and most of them are curved soldering iron tips.
c. Pen holding method: holding a constant temperature electric soldering iron is like holding a pen, suitable for small power electric soldering iron, welding small welded parts
3. Welding steps:
During the soldering process, the tools should be placed neatly, and the constant temperature electric soldering iron should be held firmly and aligned. For general joint welding, it is best to use tubular solder wire with rosin. Hold the handle of the constant temperature electric soldering iron in one hand and the solder wire in the other.
1. One method is to quickly contact the heated and tinned soldering iron tip with the cored wire (cored wire), then contact the solder joint area, use the molten solder to help the initial heat conduction from the soldering iron to the workpiece, and then put the tin wire Move the soldering iron tip away from the soldering surface.
2. One method is to touch the soldering iron tip to the pin/pad, put the tin wire between the soldering iron tip and the pin to form a thermal bridge; then quickly move the tin wire to the opposite side of the soldering point area.
However, in the production process, there are usually damages to the PCB or components caused by the use of improper temperature, too much pressure, prolonged residence time, or the combination of the three.
