How to use a pointed soldering iron and some tips on how to use a pointed soldering iron
Preparation
1. Before the use of new soldering iron, the application of fine sandpaper will be bright iron head, electric heat, dipped in rosin with a soldering iron head edge contact solder wire, so that the iron head evenly coated with a layer of tin. Doing so, can facilitate welding and prevent the surface of the iron head oxidation. If the old iron head is seriously oxidised and blackened, use a steel frustrator or iron cleaner to frustrate the surface oxide, so that it reveals a metallic luster, re-plated with tin, before use.
The soldering iron should be used with 220V AC power supply, and special attention should be paid to safety when using it. The following points should be done carefully:
It is better to use the three-pole plug of the soldering iron. Make the shell properly grounded.
Before use, the power plug and power cord should be carefully checked for damage. And check whether the soldering iron head is loose.
In the use of the soldering iron, it should not be knocked with force. To prevent falling. When there is too much solder on the head of the soldering iron, it can be wiped off with a cloth. Do not fling it around to prevent burning others.
During the welding process, the soldering iron can not be placed everywhere. When not soldering, it should be placed on the soldering iron stand. Note that the power cord must not be hitched to the head of the soldering iron, in order to prevent scalding the insulation layer and accidents.
After the use of the end, should be timely cut off the power supply, unplug the power plug. After cooling, then the soldering iron back to the tool box.
2,Solder and flux
Welding, but also need to solder and flux.
(1) solder: welding electronic components, generally used with rosin core of the solder wire. This wire, low melting point, and contains rosin flux, extremely convenient to use.
3, auxiliary tools
In order to facilitate the welding operation is often used sharp-nosed pliers, partial mouth pliers, tweezers and knives as auxiliary tools. Should learn to use these tools correctly.
Sharp-nosed pliers, pliers, tweezers, knife
Pre-soldering
Before welding, should be component pins or circuit board welding parts of the pre-soldering treatment.
1, to remove the welding parts of the oxide layer
Available broken saw blade made of knife. Scrape the surface of the metal lead oxide layer, so that the pins reveal the luster of the metal.
Printed circuit boards can be used fine gauze paper will be copper foil after playing light, coated with a layer of rosin alcohol solution.
2, component tinning
In the scraping of the net lead on the tin. Leads can be dipped into a rosin alcohol solution, the hot soldering iron with tin head pressure on the lead, and turn the lead. Can make the lead evenly plated with a very thin layer of tin. Before welding the leads, the insulating sheath should be stripped, and then after the above two treatments, before formal welding. If it is a multi-stranded wire leads, lightening should be screwed together first, and then tinned.
Scrape off the oxidised layer Uniformly plated with a layer of tin
