How to deal with Willard welding head without hanging tin?

Many customers ask the author that there are always some minor problems in the application process of Weile welding head, for example, welding head does not hang tin, which is a common problem in the welding process. So let's talk about how to deal with the problem of not hanging tin in Willard welding head. In the process of welding, tin is not hung in welding head, which is a headache. To deal with this problem, we must first find out the reasons: 1. The power of the soldering iron is too high, and the power of welding head is from 20w and 25w to several hundred watts. The external heating type electric soldering iron has complex manufacturing process, low efficiency and high price, and the quick heating type is difficult to operate because the large transformer is held in hand; Internal heating soldering iron has simple structure, high thermal efficiency, lightness and flexibility. Used as decorative transistor, ic tape recorder, TV set, for general circuit experiment, it is generally advisable to repair vacuum tube machines, such as gall bladder machines and old instruments, it is advisable to use 35w, while the external heating type is 45w. For welding large transformer wiring and grounding trunk line on metal bottom plate, it is advisable to use internal heating type 50w and external heating type 75w. You can compare whether your welding head is too powerful.

2. The quality of welding head is unqualified. If it is the kind of defective welding head in the market, there will often be a treatment method without hanging tin: first prepare a blade and a new solder wire, which should contain auxiliary agents. Burn the soldering iron first, then pull it out, scrape the position to be tin-plated with a blade, and fill it up with a new solder wire. It may still not go up at the beginning, and then scrape it clean when it goes up. From the beginning, when the temperature is as low as a suitable temperature, the solder will naturally go up. If it is still impossible, repeat this process. If it is really impossible, it is that your welding head contains too much tin and can't get tin. Try it with a magnet. 3. The quality of welding head, which has not been used for a long time, is not good, which simply occurs. Clean the oxidized welding head with sandpaper, then plug in the power supply, immerse the head in rosin, when the rosin begins to melt into a viscous shape, take out the soldering iron, hang tin with welding wire, it doesn't matter if it is slightly more, then drag tin repeatedly on a welding plate, and evenly coat the welding head. A, general welding welding head temperature control principle can refer to. Generally, the basic temperature control principle in the welding process is that if lead-free products are often welded, the temperature should be adjusted to about 350-400 degrees. If it is welded with lead products (which do not advocate the use, and cause great damage to human body), it can be adjusted to 340 degrees.