The solid core lead-free solder wire is named Siyi, which refers to the tin wire without flux rosin and other chemicals in the tin wire. Since there is no chemical substance in the solid core lead-free solder wire, it can achieve a smokeless effect when burned. , but due to the lack of active agents and combustion aids, the tinning efficiency is low and the cost is high. It is mainly used in automatic soldering machines. Due to the high efficiency of automatic soldering machines, the use of solid lead-free solder wire is still considerable. Yes, and there are very few after-sales problems, and there are almost no after-sales problems. Because the center of the conventional tin wire contains rosin flux, it is prone to smoke, choking taste, splashing of fried tin tin liquid, etc. during use. problem occurs.

       The manufacturing process of solid core lead-free solder wire is also relatively simple. The main process is to melt tin ingots, copper and other raw materials through the furnace, add a certain proportion to the boiler and stir, and then make tin sticks, place the tin sticks in the large extruder Extrusion, do not add flux rosin and other chemicals during the extrusion process, extrude into a very thick large tin wire, and then pass through the wire drawing machine to finely draw the large diameter solid core solder wire into what the customer needs The diameter of the wire, and then pack it through the winding machine, it can be delivered to the customer for use by the customer.

       To judge whether it is a solid lead-free solder wire, it mainly depends on the cut surface of the solder wire. If there is a small hole in the center of the cut surface, it means that it is a flux cored solder wire. The small hole of the solder wire is filled with flux. lead solder wire. However, it is worth mentioning that the solid core lead-free solder wire still needs to add flux when soldering, otherwise it will not be soldered. Flux-cored solder wire will save a process in welding.