​No matter how carefully use soldering iron, every once in a while welding head black will slowly become dirty (oxide). This is really annoying. Soldering iron there will always be next to a damp sponge, can clean the welding head at any time.

Welding of large components, welding head slightly dirty not special in the way. You can always found a relatively clean place on soldering iron head welding work done to help you. But if you're in the small size of the circuit boards welding patch element, it gets some relative problems.

Although patch element's ability to bear short-time high temperature is not bad, but if you can't in a relatively short period of time to complete the welding, it will soon be damaged by high temperature.

So we need to be able to make the iron in the shortest possible time passed enough heat to complete welding. SMT components of solder joints is very small, so our iron also need to have a relatively sharp soldering iron head, and it's on the tin content wants moderate.

The question that the isolated from oxygen when heated metal meet with oxygen in the air, metal will be oxidized. So I think, if after soldering iron plugged into the stand, welding head can contact with air, not can well protect the welding head?

"If I could dip soldering iron head has been in the tin is good". This is a good idea, but in the process of the implementation details need to be solved.

First, what kind of container to use cheng fang molten tin? The container should be heat resistant, cheap, and is small enough and light enough. I turn to describe a market a big circle, finally I bought two 1 cm of small nuts, they just is ShengXi container in my imagination. Actually this thing could have been used for fastening of children toy car wheels.

Soldering iron heat is enough to melt the solder. And, the question that the isolated from oxygen when heated metal when you meet the oxygen in the air oxidation of metal will be. If the iron plugged into the stand, welding head can contact with air, not can well protect the welding head?

"If I could dip soldering iron head has been in the tin is good". This is a good idea, but in the process of the implementation details need to be solved.