Question 1

How often should I check coolant concentration?

Accepted Answer

Check coolant concentration at least once per shift in high-production environments. For job shops with moderate usage, daily checks are sufficient. After adding water or coolant concentrate, always recheck and adjust to maintain the target concentration.

Question 2

What causes poor refractometer readings?

Accepted Answer

Tramp oil contamination, dirty prisms, and temperature variation are the most common causes. Clean the prism with a soft cloth and distilled water before each reading. If the coolant appears cloudy or has visible oil sheen, take a sample from below the surface for a more accurate measurement.

Question 3

Does concentration affect tool life significantly?

Accepted Answer

Yes. A 1% deviation from optimal concentration can reduce tool life by 15–25%. Below-optimal concentration reduces lubricity and cooling capacity, while above-optimal concentration reduces heat transfer. Maintaining tight control (±0.5% of target) consistently extends tool life.
⚡ Calculated for Carbide-Tooling.com High-Performance Series. View Catalog →

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