How to use and tips for pointed soldering iron
preparation
Before using a new soldering iron, use fine sandpaper to polish the tip of the iron, heat it up with electricity, dip it in rosin, and then use the blade of the soldering iron tip to contact the solder wire, so that a layer of tin is evenly plated on the soldering iron tip. This can facilitate soldering and prevent oxidation of the surface of the soldering iron tip. If the old soldering iron tip is severely oxidized and turns black, it can be scraped off with a steel scraper or soldering iron cleaner to expose the surface oxide, and then tin plated again before use.
Electric soldering iron should use 220V AC power supply, and special attention should be paid to safety when using it. The following points should be taken seriously:
It is best to use a three pole plug for the soldering iron plug. Ensure that the casing is properly grounded.
Before use, carefully check whether the power plug and power cord are damaged. And check if the soldering iron tip is loose.
Do not strike the soldering iron with force during use. To prevent falling. If there is too much soldering on the soldering iron tip, it can be wiped off with a cloth. Do not throw it randomly to prevent scalding others.
During the welding process, the soldering iron should not be placed randomly. When not soldering, it should be placed on the soldering iron holder. Please note that the power cord should not be placed on the soldering iron tip to prevent damage to the insulation layer and potential accidents.
After use, the power should be cut off promptly and the power plug should be unplugged. After cooling, retrieve the soldering iron from the toolbox.
2. Soldering and soldering flux
When welding, soldering and flux are also required.
(1) Soldering: Soldering electronic components, generally using solder wires with rosin cores. This type of solder wire has a low melting point and contains rosin flux, making it extremely convenient to use.
3. Auxiliary tools
For the convenience of welding operations, auxiliary tools such as pointed nose pliers, angled pliers, tweezers, and knives are often used. We should learn to use these tools correctly.
Sharp nose pliers, side mouth pliers, tweezers, small knife
Pre weld treatment
Before welding, the soldering parts of the component pins or circuit board should be subjected to pre welding treatment.
1. Remove the oxide layer from the welding area
A small knife can be made from a broken saw blade. Scrape off the oxide layer on the surface of the metal lead to expose the metallic luster of the pin.
Printed circuit boards can be polished with fine yarn paper and coated with a layer of rosin alcohol solution.
2. Tin plating of components
Tin the scraped leads. After dipping the lead in rosin alcohol solution, press the hot soldering iron tip with tin onto the lead and rotate it. It can evenly coat the lead with a thin layer of tin. Before welding the wire, the insulation outer layer should be peeled off and then subjected to the above two treatments before formal welding. If the wire is made of multiple strands of metal wire, it should be twisted together before tin plating after polishing.
Scrape off the oxide layer and evenly coat it with a layer of tin
