What is ISO 21256‑2 about?
ISO 21256 discusses cleaning applications by fine bubble technology. ISO 21256‑2 outlines a test method for the removal of machine oil stain from a non-corrosive metal surface using fine bubble water. A test is provided to show the comparative cleaning advantage of adding fine bubbles to the water.
The main cleaning solvent fluids used in these industries are solvent-based (e.g., hydrocarbon detergent liquids, bromine-containing detergents, and alkali detergents), despite it being well known that such detergents can cause environmental pollution such as ozone layer depletion, water pollution, etc.
ISO 21256‑2 is intended to provide a procedure that can help demonstrate the cleaning performance of such technology so that different methodologies can be compared.
Who is ISO 21256‑2 for?
ISO 21256‑2 on cleaning machine-oil-stained surfaces of machined metal parts is useful for:
- Manufacturers who have high usage of machinery
- Machine and metals parts cleaners
- Service providers of machinery
Why should you use ISO 21256‑2?
Mineral oil is used in the manufacturing processes of industrial products, for applications such as cutting, lubrication, and cooling. Oil remaining on the surface of products must be cleaned during operation and at the end of the process.
ISO 21256‑2 guidelines provide requirements, reagents, materials, apparatus, preparation of test pieces, procedures, calculation of oil cleaning index of oil stain, and test reports for cleaning machine-oil-stained surfaces of machined metal parts. This helps in improving sustainability, energy-saving, and safety, as it uses less water and no chemical substances for cleaning machine-oil-stained surfaces of machined metal parts.
