Different characteristics of special-shaped solder rings and regular flux-cored solder rings, and description of characteristics of soft solder
Release time:
2022-06-09
【Summary Description】 In the soldering process, the full wetting of solder such as solder ring is an important link to ensure the quality of welding. No matter what kind of welding method is used, matching the appropriate solder plays an indispensable role.
At present, the core brazing materials used in the brazing industry mainly include aluminum-silicon core brazing materials, zinc-aluminum core brazing materials and silver-based core brazing materials. The commonly used core specifications are usually 1.6mm, 1.8mm and 2.0mm. During the soldering process,welding ringWaitSolderThe full wetting is an important link to ensure the quality of welding, no matter what kind of welding method, matching the role of the appropriate solder is indispensable;
Secondly, when the solder is in contact with the liquid solder and the solid substrate, the surface tension shown is quite large. If the surface tension of the liquid solder cannot be effectively reduced, the shape shown should be spherical and does not have the wetting angle suitable for the requirements, at the same time, it can not be covered with pads or can not be spread and infiltrated to the required welding site, which is a typical welding poor condition, commonly referred to as poor wetting.
poor wetting is mainly due to the existence of surface tension, whether insolder wireWelding or hand dip soldering, wave soldering or hot air reflow soldering of solder paste, etc., may occur in all soldering processes. For example, the surfactant in the flux of solder such as solder ring is the core material. The performance of the surfactant and whether it is used properly will affect the soldering effect of the flux. With the continuous improvement of surfactant technology, the application of fluorocarbon surfactants in flux is also deepening, and the correct selection and appropriate ratio is an important factor to ensure the performance of a flux.
For brazing filler metals, various special-shaped welding rings such as circular rings, ellipses, squares and semicircles can also be made into customized services according to different application tools. The specific materials of brazing filler metals include silver-based, copper-phosphorus, brass and aluminum-silicon flux core brazing filler metals, etc. to better serve brazing products and brazing business.
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