Electric soldering iron is a tool used for soldering components or wires, which can be used for mobile phone repair and electronic component production. Using an electric soldering iron requires a high degree of technicality. Many people will always encounter the situation where the electric soldering iron does not stick to tin during the process of using the electric soldering iron. Let me introduce you to the reasons and solutions for the non-stick soldering iron.
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　　 What should I do if the soldering iron does not stick to tin?
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1. If the temperature is too high, the tin attached to the surface of the soldering iron will quickly melt and volatilize, resulting in violent oxidation. Add more tin at high temperatures.
2. Use incorrect or defective cleaning methods. It is recommended to use a cleaning sponge and a soldering iron tip cleaner.
3. The use of impure solder or flux in the wire is interrupted. It is necessary to select solder correctly to ensure the quality of tin.
4. The working temperature exceeds 350 ℃, and the soldering stops for more than 1 hour, the amount of tin on the soldering iron tip is too small. It is recommended to add tin protection when not in use
5. "Dry-fired" soldering iron tip, such as: the soldering station is open and not used, and there is no tin on the surface of the soldering iron tip, which will cause rapid oxidation of the soldering iron tip.
6. The flux used is highly corrosive, which causes rapid oxidation of the soldering iron tip and the selected flux.
7. It is recommended to use neutral active flux.
8. The oxide on the tip of the soldering iron is not frequently cleaned. Clean up the iron tip more.
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　 Selection and maintenance of electric iron
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There are many types and specifications of electric soldering iron, and the size of the workpiece to be welded is different. Therefore, the reasonable selection of the power and type of electric soldering iron has a direct relationship with the improvement of welding quality and efficiency.
(1) When soldering integrated circuits, transistors and vulnerable components to heat, 20W internal heating type or 25W external heating type electric soldering iron should be selected.
(2) When welding wires and coaxial cables, you should first use 45W ~ 75W external heating type soldering iron, or 50W internal heating type soldering iron.
(3) When welding larger components, such as the lead pins of the line output transformer, the lead pins of the large electrolytic capacitor, and the grounding pad of the metal chassis, etc., an electric soldering iron of more than 100W should be used.
It is better to use the adjustable temperature soldering iron for the electric soldering iron; when the soldering iron is not usually used, it is necessary to keep a certain amount of tin on the soldering iron nozzle. Quantify the moisture to make the sponge wet all day; when you pick up the iron and start using it, you need to clean the iron tip, but you do n’t need to put the iron tip on the sponge to clean it during use, just put the tin on the iron tip Into the tin carton, so that the temperature of the soldering iron tip will not fall rapidly. If there is still difficulty in extracting tin on the IC, add some tin (because the tin wire contains flux), you can easily extract more The tin is down; the temperature of the soldering iron is normal between 340 and 380 degrees. If some sensitive components can only accept the soldering temperature of 240 to 280 degrees; the soldering iron is black and can not be processed by metal devices such as blades, but should be used Solve it with rosin or tin wire; after using it every day, clean it first, then add enough tin, and then immediately cut off the power.
The above is for the friends about the selection and maintenance of electric soldering iron and how to do it. The reasons and solutions for the non-sticking of the soldering iron are described in detail above. Everyone will definitely encounter some problems during the use of the soldering iron, and novices must be particularly careful when operating the soldering iron, and strictly follow the correct operation method. To operate.
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