Coolant pH drift ruined 14 hours of runs last month

I kept chasing random surface finish issues on stainless parts, swapped inserts, adjusted feeds, nothing stuck. Then I finally tested the coolant with a cheap pH strip and it was way low, like 7.8. The bacteria load was killing the lubricity and I didn't catch it for a whole week. Now I check the sump every Monday morning before anything else. Anybody else run into hidden coolant chemistry issues that showed up as tool wear first?

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jessica_ross3812d ago

Did you check if the bacteria was coming from your water source?