During the use of Low-temperature tin wire, problems such as soldering iron tip blackening and oxidation often occur. Shenzhen JJY has analyzed the causes and summarized the key points below:

It relates to the quality of the soldering iron tips that customers use with the Tin wire.

There are several types of soldering iron tips on the market. One is the round tip made by an electroplating process, whose plating layer is well bonded and not easily damaged. The other type is produced by batch electroplating, with thousands of tips tumbled together in a blue box.

As a result, the uniformity and adhesion of the plating layer are only average, and the tips wear out easily. Some customers buy copper strips and cut them into tips themselves, but the actual performance is poor. Soldering iron tips made by different processes have different service lives, which leads to oxidation and blackening; tips cut from copper strips have the shortest life and seriously degrade the gloss of the solder joints.

It is also related to the active agents in the Flux.

The stronger the activity of the active agent, the stronger its corrosive action. When the activity is too high and the flux is not mixed uniformly during production, a locally excessive concentration of active agents will attack the soldering iron tip, causing it to turn black and oxidize. Activity levels therefore differ among types of active agents.

It also depends on the operator's technique. Under proper practice, after about five solder joints, the tip should be wiped on a damp sponge; if no sponge is available, it can be wiped on the dross left over from use. This prevents flux from remaining on the tip for long periods and causing corrosion. However, most customers do not do this.

It is also related to the Flux Content in the Solder Wire. The more flux there is, the more chemical residue remains on the soldering iron tip during soldering, and the more severe the damage. The flux content can be reduced appropriately, but doing so will indirectly affect the soldering performance of the solder wire.

As for light-tin solder, the active agents in the tin bars have higher activity and corrode more readily. In conclusion, when soldering iron tips oxidize and blacken, you need to select the right flux, adjust its composition appropriately, guide customers toward correct operating practices, and use qualified tips. Only in this way can good practical results be achieved.

Shenzhen JJY brand low-temperature tin wire is the right choice for you. We offer solutions tailored to your needs. Solder paste manufacturer Choose JJY.