Castrol Cooledge CB - Soluble Cutting Fluid - 7003
Castrol Cooledge CB is a soluble cutting fluid for general machining of copper and copper-based alloys.
Castrol Cooledge CB uses selected emulsifiers to ensure that there is no interaction between the emulsifier and the copper workpiece, preventing sludging or greening of the emulsion. If a conventional milky soluble oil is continuously used with cuprous metals, the copper can react chemically with the emulsifier in the coolant. The metallic soap formed by this reaction extracts more fatty material from the emulsion, which can then split more easily - causing a progressive reduction in overall performance in corrosion protection. A further disadvantage is that the copper soap, which first appears as a curd, becomes a semi-solid when impregnated with fine swarf causing blockages of services, pipelines and suds pumps. The coolant delivery pipes can also become internally coated with this metallic soap, restricting the coolant flow.
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