I want to buy an electric iron, but do not know the heat sponge and what is the use of a solder paste.
Flux look at the name, you do not understand, I really took you! As for the heat-resistant sponge, it is used to wipe the head of the iron
Heat resistant sponge is used to rub the iron head
Electric iron in heating to the highest temperature, the electric iron coated with flux to stick on the tin coated flux is non stick tin, copper contact there is in you also to apply welding welding, and then use your electric iron to poke the copper contact to welding. And quite strong, if not prefluxing copper contact even if welding is forced up weld, is not very firm. Then the effect of heat-resistant sponge: electric iron head is copper, copper oxide black copper oxide in the heating state for a long time, there is a small amount of tin oxide, so the tip surface covered with a layer of copper oxide film and tin oxide, tin to prevent adhesion, heat resistant sponge come in handy here, you use the electric iron heating in the sponge grinding back and forth a few will be able to get rid of the oxide layer and tin oxide, then you can directly apply flux can be used, it is best not to pay attention to scrape the iron head with a knife in the film, easy to damage the iron head, or a lot, but said quite clear, that is, not what esoteric, heating type electric iron is easy to learn.