Electric soldering iron is a necessary tool for electronic production and electrical maintenance. The main purpose is to weld the components and wires. According to the structure, it can be divided into internal heating type electric iron and external heating type electric iron. According to the function, it can be divided into welding electric soldering iron and suction tin. Electric soldering iron is divided into high-power electric soldering iron and low-power electric soldering iron according to different purposes. The internal heat type soldering iron is small in size and inexpensive. General electronic production uses 20W-30W internal heat type soldering iron. Of course, there is a 50W external heating soldering iron that can be prepared. The internal heating type soldering iron has high heat generation efficiency, and it is also convenient to replace the soldering iron tip.
1. Before using the soldering iron, check whether the voltage used is consistent with the nominal voltage of the soldering iron;
Second, the soldering iron should be grounded;
3. After the electric iron is energized, it cannot be arbitrarily knocked, disassembled and installed with its electric heating parts;
4. The soldering iron should be kept dry and should not be used in excessively humid or rainy environments;
5. When removing the iron tip, cut off the power supply;
6. After cutting off the power supply, it is best to use a layer of tin on the soldering iron head to protect the soldering iron tip;
7. When there is a black oxide layer on the soldering iron tip, it can be wiped off with an abrasive cloth, then energized, and immediately tinned;
Eight, the sponge is used to collect tin slag and tin beads, and it is suitable to squeeze the water just by hand;
9. “5S†should be done before welding, and “5S†should be done after welding.
Setting of soldering iron temperature 1. The temperature is determined by the actual use, and it is most suitable to solder a tin point for 4 seconds. Usually observe the tip of the iron, when it is purple, the temperature is set too high.
Second, the general in-line electronic material, the actual temperature of the soldering iron head is set to (330 ~ 370 degrees); surface mount material (SMC) material, the actual temperature of the soldering iron head is set to (300 ~ 320 degrees)
Third, special materials, need to set the temperature of the soldering iron.
Fourth, the microphone, buzzer, etc. should use silver tin wire, the temperature is generally between 270 degrees and 290 degrees.
Fifth, the welding of the large component feet, the temperature should not exceed 380 degrees, but can increase the power of the soldering iron.
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