VV-C-846 Cutting Fluids: Emulsifiable OilsThis specification covers three types of emulsifiable oils, which, when diluted with water, are intended for use in metal-cutting operations see 6.1.

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VV-C-846D

4.2  Sampling for inspection.  Unless otherwise specified (see 6.2), sampling of bulk and packaged lots for inspection shall be in accordance with ASTM D 4057.

4.3  Quality conformance inspection.  The conformance inspection shall consist of all of the examinations and tests listed in table III and paragraphs 4.4.1 through 4.4.7, unless explicitly waived in the contract.

4.3.1  Inspection conditions.  The contractor shall maintain a system to preserve the cutting fluid without contamination from the time of manufacture until final delivery.  The system shall document the quality, testing, quantity, packaging, marking, and loading of the cutting fluid. Records shall be maintained for at least one year after the completion of the relevant contract.

4.3.1.1  Examination of preparation for delivery.  Examine samples selected for compliance with MIL-STD-290 with regard to fill, closure, sealing, leakage, packaging, and marking requirements.  Reject any container having one or more defects or under the required fill.  The sampling plan acceptance level shall be as stated in the contract (see 6.2).  If the number of defective or under-filled containers exceeds the acceptance number for the appropriate sampling plan, reject the lot represented by the sample.

4.4  Test methods.  All tests are classified as quality conformance tests.  Perform tests and evaluations in accordance with the applicable test methods given in table III and paragraphs 4.4.1 through 4.4.7.

TABLE III.  Test methods.

1Before determining the flash point, heat the sample to 220 °P (104 °C) for one hour in a low- form evaporating dish having an open surface

approximately 10 cm in diameter to remove water that might interfere with the flash point determination.

4.4.1  Storage stability.  Pour a 100 mL sample of the emulsifiable oil into a 100-mL glass- stoppered graduated cylinder and store it for 168 hours in an oven maintained at 130 °P ± 5 °P (54 °C ± 3 °C).  Remove the cylinder from the oven and allow the sample to cool to room temperature 77 °P ± 5 °P (25 °C ± 3 °C).  Examine the sample visually for separation or gelling. If none is observed, store the sample at 40 °P ± 2 °P (4 °C ± 1 °C) for 4 hours.  Allow it to warm to room temperature, and examine it for separation and gelling again.  If none is observed, save the sample for the emulsion stability test (see 4.4.2).

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