The difference between laser soldering and soldering iron welding

　　Differences in contact modes

　　Soldering iron welding generally adopts contact welding, which is easy to cause scratching of the surface of the product, and the soldering iron head will bring certain pressure to the welding parts during welding, resulting in the tip of the solder joint, and there is transmission risk. In contrast, Songsheng photoelectric tin welding uses non-contact welding laser welding, which can better avoid these risks, neither cause mechanical damage to the product, nor produce pressure on the welding components.

　　Adaptability differences

　　When welding some parts with complex surfaces, the soldering iron welding is easy to interfere with the components on the surface of the workpiece because the soldering iron head and the wire feeding device occupy a large space. The laser soldering wire feeder occupies a small space and is not easy to interfere. In addition, the spot size of Songsheng photoelectric laser solder can be automatically adjusted to adapt to various types of solder joints, which can meet the needs of more products, while the traditional soldering machine needs to replace or redesign the soldering iron head. As a result, laser soldering is more adaptable.

　　the difference in the impact on welding components

　　Soldering iron welding is generally the use of the whole plate heating, which will undoubtedly have an adverse effect on some of the existing thermal elements, and Songsheng photoelectric laser soldering process, the laser only heats the part of the spot irradiation, the local temperature rises faster, and can effectively reduce the impact on the device around the solder joint.

　　Differences in energy consumption materials

　　From the perspective of material saving: most of the soldering iron tips are used to provide the required energy in the soldering iron welding process, but with the aging and wear of the soldering iron tips, the temperature cannot meet the welding requirements, and the serious wear of the soldering iron tips caused by the contact welding method, the soldering iron tips need to be frequently cleaned and replaced, increasing the welding cost. In Songsheng photoelectric laser soldering, the laser is used as a heat source, and the tin material is fused into the gap of the weldment to connect it, without equipment consumables, thereby reducing the production cost.

　　From the perspective of energy saving: because the heating method of the traditional soldering iron welding process is the whole plate heating, it will cause more meaningless loss of heat and increase the loss of electric energy; The local heating method adopted by Songsheng photoelectric laser soldering can produce less heat consumption and achieve better energy saving effect.

　　processing precision difference

　　Due to the limitation of traditional soldering process and control mode, wire feeding and welding accuracy are limited. And Songsheng photoelectric laser soldering technology has rapid heating and rapid cooling characteristics, which can make the metal compounds produced during welding more uniform and fine, and the mechanical properties of the solder joints are better. Local heating is more conducive to the welding of heated components and heat-sensitive components on circuit boards with dense components and solder joints, and can reduce the bridge between solder joints after welding.

　　Safety performance differences

　　The non-contact laser tin welding method reduces the use of rosin and the residue of accelerant, and reduces the generation of harmful smoke, waste residue and waste. Songsheng photoelectric laser soldering has been able to accurately control the temperature of the solder joint in real time, prevent the burning of the plate, and greatly reduce the difficulty of debugging the welding process, and reduce the injury to the operator.