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Baking parts of mixed thickness / time in oven requirements

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#83434

Baking parts of mixed thickness / time in oven requirements | 19 September, 2019

When baking parts at 90C that require 15 hours bake time with parts that require 25 hours bake time, is it acceptable to open the oven and remove the former (15 hours) parts and then continue the 25 hours cycle for the remainder of the parts in the oven? Or, does opening the oven door during the drying cycle require that you start the clock over again. I've read in the standard that you can open a drying cabinet and retrieve parts without a need to oven dry parts as long as the cabinet is able to return to <5% RH in one hour, and so was wondering how this might apply to an oven, if at all. Anyone know? There is nothing in the standard that I can see about opening the oven during the cycle, which is not something I would normally do, when drying parts of the same thickness.

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#83437

Baking parts of mixed thickness / time in oven requirements | 19 September, 2019

Briefly opening the door probably won’t affect anything significantly. If in doubt, add an extra hour to the bake time. A better approach might be to keep both parts in the oven for 25 hours. You have up to 96 hours before oxidation becomes an issue. Remember that your oven needs to be vented.

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#83442

Baking parts of mixed thickness / time in oven requirements | 20 September, 2019

Thank you for the response, yes, the oven is vented. I guess I am concerned for parts with a thinner package body, so I wasn't wanting to leave them in for too long past the recommended bake times.

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#83444

Baking parts of mixed thickness / time in oven requirements | 20 September, 2019

It won’t hurt’em if under 96 hrs.

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#83445

Baking parts of mixed thickness / time in oven requirements | 20 September, 2019

Very good. Thanks.

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