Could you briefly discuss the usage instructions for different grades such as 6337 tin bars?

Generally speaking,6337Tin bars are used for spot welding of high-end products in high-precision instruments, high-end electronics industry, communication industry, wechat technology, aviation industry, etc.Sn50~Sn40It is used for soldering common circuit boards, such as common household appliances, electrical instruments, auto parts, common hardware and electrical appliances, etc.Sn35~Sn25It is generally applied in situations with relatively lower requirementspcbSpot welding of circuit boards, such as those for hardware machinery, car radiators, light bulbs, cable joints and other products. Lead-free tin wire is generally applicable to electronic and electrical industrial products for export.

Solder joint marks usually refer to the surface temperature at which the solder wire changes from solid to liquid state, and the soldering iron temperature usually refers to the minimum melting point that the daily soldering temperature can reach50It is easy to spot weld between degrees. Regarding heat resistance, heat resistance is closely related to the melting point. The higher the melting point, the stronger the ability to withstand high temperatures. Spot welding followed by wave soldering proves: exceeded5The melting point in seconds cannot be higher than the minimum melting point50When passing through wave soldering, it is advisable to choose silver-containing lead-free solder wire as much as possible.

High-temperature lead-free tin barsIt generally refers to the working environment temperature being450The specific environmentally friendly tin strips between degrees are mainly used in wave soldering machines, and enterprises are required to use high-temperature resistant onespcbThe circuit boards should be matched properly; otherwise, they are very likely to be damagedpcbCircuit board.

Shenzhen JJY has carried out mutually beneficial cooperation with electronic raw material producers. At the same time, it also produces solder wire, solder bar, solder paste and flux paste for other enterprises. It is processed and manufactured with high-purity Yunnan tin ingots made from virgin materials, featuring fast welding speed, minimal residue, good lubricity, stable electrical and thermal conductivity. High-quality pure white transparent hydrogenated rosin is used for processing and manufacturing, resulting in bright weld marks, minimal ionic residue, clean appearance, and very low corrosiveness.