In the daily soldering process, it is undeniable that there will be components that need to be soldered by hand, so what are the soldering methods and steps for manual soldering components? Here's how to share our method: Standard Soldering Method 1 for Hand Soldering, Determine Solder Composition and Flux Type Before You Start Soldering (if you're not using Rosin core solder).
The type of solder determines the appropriate temperature for the soldering tip. Use a thin welding wire to weld smaller SMT components. Choose a suitably sized tip before heating the soldering iron. For fine work, use smaller soldering iron tips, while larger solder joints use larger soldering tips. Removes all contaminants or oxides from the tip of the soldering iron. Do not scratch the surface of the tip, as scratching can quickly dissipate heat from the tip. Place a sponge soaked in cold water nearby and clean the tip from time to time during the welding operation. Remove contaminants or residues from the contact points/pins and board pads of electronic components. 2, the soldering iron temperature can completely melt the solder and make it flow into the solder at the lowest temperature is the most suitable temperature. It is recommended to use a temperature-controlled soldering iron, especially for thin wire applications. Solder producers can be asked about the temperature of a particular solder. Solder producers may only provide a melting temperature range, so you may have to test to determine the appropriate tip temperature. 3. Place the component to place the electronic component in the center of the circuit board pad. For through-hole components, insert the pins into the holes and bend the pin ends to hold them in place. Hand soldering method 4, soldering iron tip dipping tin to heat the soldering iron tip with a small amount of solder. This helps transfer heat to the weld and prevents the soldering iron tip from overheating. The clean, tin-stained tip looks shiny. Overheated or burned tip is brown or black. Water-soluble fluxes are easily sucked upwards and leave the tip, causing the tip to overheat. No-clean solder contains less flux and may require more frequent tinting of the soldering iron tip. Pre-soldering component pins/contacts and board pads can also improve the solderability of the connection. 5. If you use the flux separately, apply a small amount of flux to the welding area. Place the soldering tip on the opposite side of the solder on the welding area. Hold the tip against the soldering area for a few seconds so that it contacts the component pins/contacts and the board pads. Larger welded connections may require longer heating times. 6, the upper solder will touch one end of the welding wire to the welding area that has been heated on the opposite side of the soldering iron tip. Allow the solder to flow into the weld. If heated enough, the solder will extend into the solder and climb onto the component pins/contacts. Once this happens, stop adding solder and remove the soldering iron. Allow the solder joints to cool down for a few seconds before moving components or boards. Moving a component or board before it cools can cause "cold" soldering. After soldering, cut the excess pins close to the solder points. Use ohmic meters to detect short or open circuits.