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What makes the machine lead free

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#54768

What makes the machine lead free | 15 May, 2008

Can anyone tell me what makes the wave solder machine lead free? I I am looking to buy a used machine "electrovert minipak 300" and they are claiming that they can convert the machine into lead free. I want to know what does involve to do this kind of work? What do they change or add? I thought the boards come lead free.

Thanks in advance.

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#54780

What makes the machine lead free | 17 May, 2008

Lead-free means expensive tin. Tin is an excellent solvent. So, metal parts in contact with molten tin must be expensive enough to resist that nature of tin. To learn more about this: * Search the fine SMTnet Archives * Look here: "Liquid Tin Corrosion and Lead Free Wave Soldering" J Morris, Speedline Technologies, MJ O'Keefe, PhD, M Perez, PhD, University of Missouri http://www.emsnow.com/cnt/files/White%20Papers/speedLiquidTinCorrosionLeadFreeWave.pdf

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