Inspection of electric soldering iron before use and correct holding method of electric soldering iron
Regarding the pre-use inspection of the electric soldering iron and the correct grip of the electric soldering iron, the quality and safety of the electric soldering iron must be inspected before use, and the insulation resistance between the two leads of the plug and the plug and the soldering iron tip can be measured. The grip of the electric soldering iron can be It is divided into three types: reverse grip, prosthetic grip and pen grip.
Check and hold the soldering iron before use. When it comes to the use of the soldering iron, it is especially important to mention that the quality and safety of the soldering iron must be inspected before use, and the distance between the lead wire, the hand and the soldering iron tip must be checked. Insulation resistance to ensure the safety and accuracy of the subsequent welding process.
1. How to use the electric soldering iron, check and prepare before using the electric soldering iron
The quality and safety of the electric soldering iron should be inspected before use. The specific method is to use the R*10k file of the multimeter to measure the two leads of the plug and the insulation resistance between the plug and the electric soldering iron tip, and use the multimeter R*1k Measure the resistance value between the two lead wires. The resistance value varies with the power of the electric soldering iron. The resistance value of a 20-35W electric soldering iron is 3.5-1.5kΩ.
The huge monthly resistance between the plug and the soldering iron tip should be infinite. If there is resistance measured, it means that the soldering iron has a leakage fault. The above are some inspections that should be carried out before using the electric soldering iron.
2. How to hold the soldering iron
In order to make the weldment welded reliably without scalding the components and wires around the welded piece, we need to properly select the holding method of the electric soldering iron according to the size of the soldering iron and the position and size of the welded piece.
The grip of the soldering iron can be divided into three types: reverse grip, forward grip and pen grip. The reverse grip is to hold the handle of the soldering iron in the palm with five fingers.
It is more suitable for the operation of high-power electric soldering iron, welding parts with large heat dissipation, and it is not easy to feel fatigue; while the power of the electric soldering iron held in the front is also relatively large, and most of them are elbow-shaped electric irons; the method of holding the pen is suitable It is suitable for low-power electric soldering iron, welding parts with small heat.
It is the most commonly used holding method in printed circuit board welding, such as welding radios, various small manufacturing and various maintenance.
