Check the soldering iron before use and the correct way to hold the soldering iron
Regarding the pre-use inspection of the soldering iron and the correct way to hold the soldering iron, the quality and safety of the 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 head should be measured. The way to hold the soldering iron can be It is divided into three types: reverse grip, forward grip and pen grip.
When it comes to how to use a soldering iron, one thing in particular should be mentioned. Before using the soldering iron, the quality and safety of the soldering iron must be checked, and the insulation resistance between the lead, the hand and the soldering iron tip must be checked to ensure the safety of the subsequent welding process. and accurate.
1. How to use a soldering iron, inspection preparations before using the soldering iron
The soldering iron must be inspected for quality and safety before use. The specific method is to first use the R*10k range of the multimeter to measure the insulation resistance between the two leads of the plug and the plug and the soldering iron tip. Use the R*1k multimeter. Measure the resistance value between the two leads. The resistance value varies depending on the power of the soldering iron. The resistance value of the 20-35W soldering iron is 3.5-1.5kΩ.
The huge resistance between the plug and the soldering iron tip should be infinite. If there is resistance in the measurement, it means that the soldering iron has a leakage fault. The above are some checks that should be carried out before using a soldering iron.
2. How to hold the soldering iron
In order to make the welding parts weld reliably without scalding the components and wires around the parts to be welded, we must appropriately choose the way to hold the soldering iron based on the size of the soldering iron and the position and size of the parts to be welded.
There are three ways to hold the soldering iron: reverse grip, forward grip and pen grip. The reverse grip is to hold the handle of the soldering iron in the palm of your hand with your five fingers.
It is more suitable for the operation of high-power electric soldering irons, welding parts to be welded with large heat dissipation, and it is not easy to feel fatigue; the power of the soldering irons held in the forward position is also relatively high, and most of them are elbow-shaped soldering irons; the pencil holding method is suitable It is suitable for low-power electric soldering iron to weld the parts to be welded with low welding heat.
It is the most commonly used holding method in printed circuit board soldering, such as soldering radios, various small productions and various repairs, etc.
