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Old 05-22-2020, 11:51 AM
Rich Arentzen Rich Arentzen is offline
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White turning pink in annealer

Any idea what would cause an enamel white to turn pink in the annealer? If we drop the piece on the floor and it cools rapidly it is white?
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Old 05-22-2020, 01:58 PM
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Pete VanderLaan Pete VanderLaan is offline
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I would have to imagine it's the arsenic Rich. There's nothing else in that formulation that would suggest color. Is it electric or gas annealing?
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Old 05-22-2020, 04:30 PM
Larry Cazes Larry Cazes is offline
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Gaffer had this issue years ago. At that time i remember it being batch related.
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Old 05-22-2020, 05:43 PM
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Pete VanderLaan Pete VanderLaan is offline
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all the arsenates have the pinking issue. Striking in the lehr is somewhat extreme.
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Old 05-22-2020, 06:29 PM
Larry Cazes Larry Cazes is offline
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Quote:
Originally Posted by Pete VanderLaan View Post
all the arsenates have the pinking issue. Striking in the lehr is somewhat extreme.
I distinctly remember gaffer discounting a batch of enamel because it struck to pink in the annealing.
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