Is the shape and size of the tip of the torch suitable? Is the heating time appropriate? What is the temperature of the tip? Waiting for multiple conditions is a necessary condition for high-quality welding. The global MRO comprehensive service provider Sugimoto explains in detail the points of the soldering iron tip, and hopes to help you with efficient and practical soldering iron tips.

        1. About welding tip and heat capacity

       As soon as the tip of the soldering iron contacts the tip of the base material, the temperature drops. The decrease in the temperature of the tip is caused by the balance between the heat capacity of the soldering iron and the heat capacity of the base material.

       The heat capacity of the soldering iron ≥ the heat capacity of the base material The temperature decrease is small and the heat recovery is fast.

       The heat capacity of the soldering iron is less than the heat capacity of the base material. The temperature decreases greatly and the heat recovery is slow.

       The temperature of the tip changes due to the shape and size of the tip, so proper selection is necessary. For temperature management, it is recommended to use an electric soldering iron with a temperature adjustment function and a soldering iron thermometer together.

       Second, the maintenance of the tip of the soldering iron

       After being energized for a long time, the tip of the soldering iron will become black due to high temperature surface oxidation, and the tip of the soldering iron is prone to oxidation. If this happens, please stop the operation immediately, turn off the power, let the soldering station cool down, then lightly polish the tip of the iron with a rubber grindstone to remove the oxide film, then turn on the power and apply a layer of solder to the tip of the iron, and then restart the operation . In addition, please turn off the power when not in use for a long time.

       3. About lead-free

       Because the melting point of lead-free is higher than that of lead, the temperature of the soldering iron is higher than usual.

       4. About welding

       When soldering, selecting the soldering iron suitable for the base material (the part to be soldered) and the appropriate heating time are factors that determine the quality of the solder. In particular, the base material on the precision circuit board is very small, and the amount of solder is not large, so the choice of the shape and size of the welding tip is very important. The soldering temperature (base material) and the melting point are about 60 ° C, so the temperature of the soldering tip is about 100 ~ 200 ° C.

       In addition, the optimal time to add tin when it reaches the solder melting temperature after heating. First, add a small amount of solder to ensure good thermal conductivity, and the nearest amount of solder to the heating position is appropriate.