English to French Tech/Engineering Engineering: Industrial Industrial molding

Hi,

I don't have much context, except it's about a company specializing in metal molding.
Sentence is "Back pressure of any mold is higher than tolerance setting while running the blow out routine"

I'm wondering about "blow out routine". I found the term "soufflage", but I think it applies more to plastic molding, not metal molding.
Do you think that "processus de purge de routine" would be the right translation for "blow out routine"?

Thanks in advance, I have a doubt.