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Guidelines for Cutting Fluid Maintenance

Guidelines for Cutting Fluid Maintenance

Flood applied cutting fluids are available as a mineral, semi-synthetic or fully synthetic concentrate designed to be diluted in water. There are simple steps required to ensure the maximum life of the fluid and performance of machinery and tooling.

Mixing: Always add concentrate to the water. It is important to ensure the dilution ratio is maintained within the recommended range to avoid corrosion and ensure maximum fluid life. By using a hand-held refractometer, the “refracture index” of the cutting fluid can be measured and easily converted to a cutting fluid concentration using a mixing ratio chart.

pH: pH is a measure of the acidity of the cutting fluid emulsion that in turn related to the level of bacterial growth in the fluid. Maintaining the cutting fluid within the recommended range (ratio) ensures optimum fluid life and a safe working environment.

Infrequent use: Bacteria tends to grow quicker in stagnant water or emulsion. Therefore, it is advisable to run the poolant circulation pump for at least an hour a week if there is not work for the machine.

Top up: As the coolant level drops due to evaporation of the water and drag-out by swarf, pre-diluted fluid should be added to the sump. Avoid adding large amounts of water in the sump as it de-stabilises the solution.

Established in 1953, Rocol is a world leader in cutting fluid technology, with a reputation for quality and performance. Rocol products include the Ultracut range of metal cutting oils for industrial applications, available from Blackwoods.

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