Common Soldering Methods for Electric Soldering Irons
1, Spot welding method (most commonly used)
Suitable for direct insertion of resistors, capacitors, transistors, and common pin components.
Operation: The soldering iron tip heats both the solder pad and the pins simultaneously, and a small amount of solder is fed in. After melting and soaking, the solder wire is removed first, and then the soldering iron is moved. The solder joint is bright and full.
2, Tin transfer welding method
Suitable for beginners and small solder joints.
Operation: Preheat the solder joint with a soldering iron tip, place the solder wire against the solder joint, use the heat of the soldering iron to melt the solder, and naturally fill the solder pad.
3, Pre tinning welding method
Suitable for thin wires, flat wires, and multi strand copper wires.
Operation: First, pre solder the wire ends, then solder the solder pads on the circuit board. Gently heat and fuse the two in the right position without exploding the wire or virtual soldering.
4, Drag welding method
Suitable for multi pin ICs, pin headers, and surface mount pins.
Operation: Use a soldering iron tip with a small amount of solder, drag it at a constant speed along a row of pins, and complete continuous soldering in one go, with uniform speed and difficulty in soldering.
5, Tin stacking and desoldering method
Commonly used for disassembling multi pin chips and plugging in.
Operation: Stack a sufficient amount of solder on a row of pins, temporarily connect and heat all pins, melt them as a whole, remove the components, and clean up excess solder.
6, Spot welding and disassembly method
Suitable for disassembling individual plug-in components.
Operation: While heating the solder joints with a soldering iron, gently pull out the pins and remove them one by one.
7, Bridge welding method
Suitable for repairing broken wires and copper foils.
Operation: Use thin copper wire to build a bridge, and weld both ends on both sides of the breakpoint, replacing damaged wiring.
