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Nowadays, the cost of soldering has doubled, coupled with the huge waste of tin slag, the cost of the entire electronics manufacturing industry has risen sharply. In recent years, the price of raw materials has continued to rise exponentially and labor costs have continued to increase, making the electronics manufacturing industry that originally had limited profit margins like To make matters worse! In addition, the impact of tin oxide slag on welding quality and reliability has caused headaches for electronic manufacturing engineers. Reducing the generation of oxidized slag in lead-free solders and improving the utilization rate of lead-free solders can directly and effectively reduce the cost of electronic manufacturing. Manufacturing costs and the generation of oxidized slag are closely related to the flow behavior of molten solder. The more unstable and disturbed the fluid, the easier it is to absorb oxygen and increase the amount of oxidized slag. So far, the formation mechani... [Details]