There are many methods of plastic welding, among which hot air welding is a common method. Plastic welding torch is generally used for operation. If there is no plastic welding torch, a hot air gun can be used instead, but attention should be paid to the proper power and temperature of the hot air gun. It is not difficult to weld plastic with a hot air gun, that is, put the solder on the nozzle, adjust the hot air gun to a suitable air temperature, and heat and blow air on the nozzle. Pay attention to the use of special solder and suitable temperature. Let's take a look at the knowledge of plastic welding with hot air torch. 1. Hot air welding torch for plastic welding?

Plastic welding generally uses special plastic welding torch and hot air welding. The principle is similar to a hot air gun. Can a hot air gun be used as a plastic welding torch?

Generally speaking, plastics can be welded by hot air torch, and early hot air guns are also commonly used to weld plastics. Hot air gun is easy to use and simple to operate, especially suitable for welding plastic plates. However, it should be noted that plastics are divided into thermoplastics and thermosetting plastics, of which thermosetting plastics are not recommended to be welded with hot air welding guns. In addition, the power and temperature of the hot air gun will also affect the welding. If the temperature of hot air gun can't meet the requirements of plastic welding, it can't be used to weld plastic.

Of course, the hot air gun is, after all, a tool for disassembling and welding electronic components. If conditions permit, it is best to use special plastic welding torch for welding plastics.

Second, how to weld plastic with hot air gun

The processing method of welding plastic with hot air gun is very simple. Compressed air (or inert gas) is heated to the required temperature for welding plastic by the heater of hot air gun, and then the weldment and covered electrode are heated and melted by this preheated gas, so that welding and bonding can be carried out under a small pressure.

The specific use method is to put the solder on the plastic welding head, adjust the hot air gun to the appropriate air volume and temperature, vertically align the plastic welding head, and heat until the solder melts.

Three, hot air gun welding plastic matters needing attention

1. To weld damaged plastic articles with hot air gun, you need to buy special plastic rods for welding, and also use the reported damaged plastic articles as welding materials, but use fillers with the same color.

2. When welding, first adjust the temperature to 200-300℃, try several times to determine the specific welding temperature, and then weld the plastic. Don't put the hot air gun directly on the plastic, you can try the temperature with ordinary materials first, preferably with a digital hot air gun.