Solder containing rare earth, tin and zinc, and preparation method thereof
A tin-zinc and rare-earth technology, applied in the field of rare-earth-containing tin-zinc solder and its preparation, can solve the problems of high silver price, high cost, easy to open welding and the like, and achieve the effect of dense alloy structure
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[0016] Take the configuration of 500kg rare earth-containing Sn-9Zn solder as an example:
[0017] Melt 454.75kg of tin ingots first, then add 40.25kg of zinc ingots, keep the temperature at 380°C and start stirring after the zinc ingots are melted, add 5kg of zinc-based master alloy containing 5% mixed rare earth metals after 2 hours, stir and wait for it to melt Then continue to stir for half an hour, and then start the subsequent casting, extrusion, and wire drawing processes, and draw the rare earth-containing tin-zinc solder with the required finished product diameter.
[0018] According to the above-mentioned embodiment, the composition of each component in the rare earth-containing tin-zinc solder is as follows: zinc (Zn) 9%, a mixture mainly composed of light rare earth elements such as lanthanum (La) and cerium (Ce) Rare earth metal (RE) 0.05%, the rest is tin (Sn) and impurities with a total amount not greater than 0.12%. The composition of each component in the imp...
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