What is the temperature standard of the constant temperature electric soldering iron?
1. Steps to use:
1. Make sure the asbestos is wet.
2. Remove impurities on the surface of the heating tube.
3. Confirm that the soldering iron screw is locked tightly without loosening.
4. Make sure the 220V power outlet is plugged in.
5. Turn the power switch to the ON position.
6. Adjust the temperature setting adjustment button to 300°C. After the heating indicator light goes out, use a thermometer to measure whether the temperature of the soldering iron tip is within 300°C±10°C; then heat to the required working temperature.
7. If the temperature exceeds the range, stop using it and send it for repair.
8. Get started.
2. End use steps:
1. Clean and wipe the tip of the soldering iron and add a little tin wire for protection.
2. Adjust the temperature setting adjustment knob to the lowest temperature that can be set.
3. Turn the power switch to the OFF position.
4. Unplug the power plug.
3. The most suitable working temperature
Using too low temperature during the soldering process will affect the smoothness of the solder. If the temperature is too high, it will damage the copper foil of the circuit board and the soldering will be incomplete and unsightly. If white smoke comes out or the surface is uneven and dull with white powder, the temperature is too high. Both of the above situations may cause cold welding or cladding welding. In order to avoid the above situation, in addition to using tin wire with caution, it is necessary to choose an appropriate and correct working temperature.
The following are the appropriate operating temperatures for various soldering jobs:
The melting point of general tin wire is 183°C to 215°C (about 361°F to 419°F)
The normal working temperature is 270℃～320℃ (about 518℉～608℉)
The operating temperature of the production line is 300℃～380℃ (about 572℉～716℉)
Working temperature of tin suction (small solder joint) 315°C (about 600°F)
Tin absorption working temperature (large solder spot) 400°C (about 752°F)
Note: In the red zone, that is, the temperature exceeds 400°C (752°F), do not use it frequently or continuously; it can only be used for a short time when it is occasionally used for large solder joints or very fast soldering.
4. How to use and maintain the soldering iron tip:
(1) The reasons why the soldering iron tip does not stick to tin mainly include the following points, please avoid as much as possible:
(1) The temperature is too high, and when it exceeds 400°C, it is easy to oxidize the tin-stained surface.
(2) The tinned surface is not fully tinned when used. www.dgjs123.com
(3) There is too little flux during soldering; or the use of active flux will oxidize the surface quickly; water-soluble flux is corrosive at high temperature and will damage the tip of the soldering iron.
(4) The sponge used to wipe the tip of the soldering iron contains too much sulfur, is too dry or too dirty.
(5) Exposure to organic matter such as plastics; lubricating oil or other compounds.
(6) The tin is impure or the tin content is too low.
(2) Precautions and maintenance methods for the use of soldering iron tips:
(1) Before the soldering iron tip is powered on every day, remove the residual oxide, dirt or flux on the soldering iron tip; and remove the impurities in the heating body to prevent the soldering iron tip from being stuck with the heating element or sleeve. Always lock the soldering iron tip to keep it in place.
(2) When using, first set the temperature at about 200°C to preheat, and then set it to 300°C when the temperature reaches 300°C. When it reaches 300°C, it is necessary to add tin to the tin-stained part of the front end of the soldering iron tip in real time, and wait for 3~ After 5 minutes, test whether the temperature is standard, and then set it to the required working temperature.
(3) When soldering, do not forcefully pick or squeeze the soldering iron tip against the object to be welded, and do not use frictional welding, as this will not help heat conduction and may damage the soldering iron tip.
(4) Do not rub the tip of the soldering iron with objects with rough surfaces.
(5) Do not use fluxes containing chlorine or acid.
(6) Do not add any compound to the tin surface.
(7) When not in use for a long time, lower the temperature to below 200°C, and protect the tip of the soldering iron with tin, do not wipe it; only when soldering, wipe it on a wet sponge, and re-stain the tip with new tin share.
(8) After the work of the day, when not soldering, wipe the tip of the soldering iron clean, then re-stain the tip part with new tin, store it on the soldering iron stand and turn off the power.
(9) If the tin-stained surface has been oxidized and cannot be stained with tin, or the oxide film becomes black due to flux and cannot be removed with a sponge, gently wipe it with 600-800 mesh sandpaper, and then wrap it with tin wire containing flux Warm the tinned surface that has been wiped, and then add tin again after the tin contacts and melts.
