What should you pay attention to when purchasing a soldering iron?
The electric soldering iron is an essential tool for electronic production and electrical appliance repair. It is mainly used for welding components and wires. According to the mechanical structure, it can be divided into internal heating type electric soldering iron and external heating type electric soldering iron. According to the function, it can be divided into non-soldering soldering iron and soldering iron. Tin-type soldering irons are divided into high-power soldering irons and low-power soldering irons according to different uses.
Buying a soldering iron
Choosing a suitable electric soldering iron will help greatly improve the efficiency of our soldering iron tip in electronic lead-free soldering. However, usually, the selection should be based on the actual situation of the object to be welded. Generally, the heating form, power size, and soldering iron tip should be considered. Shape etc.
Selection according to the heating mode of electric soldering iron
1. Choice between internal heating and external heating: Under the same wattage, the temperature of the internal heating soldering iron is higher than that of the external heating soldering iron.
2. When low-temperature welding is required, a voltage regulator should be used to control the temperature of the soldering iron. The temperature of the soldering iron is closely related to the power supply voltage. In actual use, the temperature of the soldering iron is often reduced by lowering the power supply voltage.
3. Control the temperature by adjusting the extension length of the soldering iron tip.
4. The main methods to stabilize the temperature of the soldering iron are as follows: install a regulated power supply to prevent changes in the power supply network; maintain a certain volume, length and shape of the soldering iron tip; use a constant-temperature soldering iron; keep the indoor temperature constant; avoid natural wind or Electric fan etc.
Choose according to the power of the soldering iron
1. When welding small-wattage RC components, transistors, integrated circuits, printed circuit board pads or plastic wires, it is advisable to use a 30~45W external heating or 20W internal heating soldering iron. It is best to use a 20W internal heating soldering iron for the application.
2. When welding the welding points of general structural products, such as wire rings, wire claws, heat sinks, grounding soldering lugs, etc., a 75~100W electric soldering iron should be used.
3. For large solder joints, such as welding metal frame connectors, soldering lugs, etc., a 100~200W electric soldering iron should be used.
