Reply to "Williams Peter Witt Zinc Rot"

phillyreadingOGR Forum Member

artfull dodger posted:
Its a shame that the quality control has dropped to the point where we see this issue again in model trains. Lionel and others figured this out decades ago. Dont see many postwar trains having zinc pest. From my understanding, the amount of impurities in the metal are what determines if the casting does this or not. Mike

It's not just the amount of impurities(that is very important too) in the metal but also how hot(what temperature) your metal gets up to. Also is the cleanliness of the metal vat and how clean the molds are that are being used. There are many factors about melting or smelting metals and allows, however cleanliness and temperature are 2 main factors.

FYI; my dad was a metallurgist with Carpenter Steel, so that is why I know a bit about metal work.

Lee Fritz

6/24/162:20 PM

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