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Why doesn't the solder stick when soldering

2019-12-25 15:41:26 Sources: Shenzhen Xinghongtai Tin Industry Co., Ltd. 893

When soldering wire, you often encounter the phenomenon that the soldering iron tip is not sticky, which is caused by many reasons.



The main reasons are as follows:

 
(1) The temperature of the soldering iron tip is set too high. If the soldering wire temperature exceeds 400 ° C, the soldering surface will be easily oxidized, so that the electronic components and circuit boards will not be soldered or gray solder joints will appear. It is best to adjust the temperature of the soldering iron tip when performing solder wire operation. It is recommended to use a constant temperature soldering iron to solder the solder wire.

(2) The soldering surface is not fully tinned during solder wire welding, and the solder surface and electronic components do not add enough tin, resulting in unstable solder wire welding. It is best to train employees before soldering to reduce the occurrence of bad solder joints.

(3) Too little flux is added when soldering the solder wire, or an active flux is used, which causes the surface of the solder to oxidize quickly, which can also lead to non-stick conditions. It is best not to use water-soluble flux, which will corrode and damage the tip when soldering at high temperature. Rosin flux is recommended for soldering wire.

(4) The sponge used for wiping the soldering iron tip is too dirty or the sulfur content is too high, which causes the soldering iron tip to be damaged, resulting in the solder wire not sticking when soldering.

(5) If it comes into contact with organic matter, the soldering iron soldered by the solder wire will not stick, such as plastic, lubricant or other compounds.

(6) The solder wire used by the manufacturer has a low tin content, or a solder wire made of tin slag can also lead to poor soldering results. Only a good quality solder wire will have a high utilization rate to save costs.

Shenzhen Xinghongtai Tin Co., Ltd. is a professional solder wire manufacturer.It has been focusing on the research and development of solder wire for 12 years.It provides solder wires, lead-free solder wires, lead solder wires, solder wires, solder bars and solder wires of different specifications.