How to Address the Misuse of Cutting Fluids?

Improper coolant usage can involve various issues, such as incorrect concentration, contamination, spoilage, and incorrect selection. Here are some specific methods to address problems related to improper coolant usage:

1. Control coolant concentration：

• Dilute the coolant in accordance with the recommended concentration provided by the coolant supplier, as the supplier usually offers detailed dilution ratio instructions.
• Overly high coolant concentration can lead to excessive foam and increased costs, while too low concentration may affect its cooling, lubricating, and rust-preventing properties.
• For processes with high precision or quality, an increase of 1%-2% above the manufacturer's recommended range can be made to mitigate the impact on processing quality and tool life due to concentration fluctuations.

1. Monitor Cutting Fluid pH Levels：

• The pH level of cutting fluids significantly affects their performance, and it should be maintained within an appropriate range, typically recommended between 8.5 and 9.5.
• Low or high pH levels in cutting fluids can adversely affect their performance, so pH levels should be regularly monitored and adjusted as needed.

1. Prevent coolant contamination：

• Cutting fluids are prone to contamination from waste materials and dirt during use, so measures should be taken to prevent such pollution.
• Ensure a clean work environment when using cutting fluids to prevent contact with contaminants.
• Cool and dry storage conditions should be maintained for cutting fluids, avoiding prolonged exposure to high temperatures or humid environments.

1. Regularly change cutting fluids：

• Cutting fluids tend to deteriorate over time during use, hence regular replacement is necessary.
• The replacement cycle should be determined based on the cutting fluid's usage and the processing environment. Typically, the replacement cycle for water-soluble cutting fluids is shorter, whereas oil-soluble cutting fluids have a longer cycle.

1. Regularly filter cutting fluid：

• To maintain the cleanliness and performance of cutting fluids, they should be regularly filtered to remove impurities and metal shavings.
• The selection of filters should be determined based on the type of cutting fluid and processing environment to ensure effective filtration.

1. Proper Selection of Cutting Fluid：

• Choose the appropriate cutting fluid based on specific machining requirements and workpiece material.
• Different metals require varying cooling and lubrication from cutting fluids, hence the selection of the appropriate cutting fluid is crucial to meet machining demands.

1. Add defoamer or preservative：

• If too much foam or spoilage occurs in the cutting fluid during use, you can add an appropriate amount of defoamer or preservative for treatment.
• Defoamers can reduce foam in cutting fluids, while preservatives can extend the lifespan of cutting fluids and prevent deterioration.

1. Proper Usage of Cutting Fluid：

• When using cutting fluids, it is essential to strictly follow the operating procedures to prevent waste and contamination.
• The spray method, pressure, and flow rate of cutting fluids should be adjusted according to processing requirements to ensure their optimal cooling, lubricating, and cleaning functions.

In summary, addressing the improper use of cutting fluids requires a multi-faceted approach, including controlling concentration, monitoring pH levels, preventing contamination, regularly replacing and filtering the cutting fluid, selecting the right type, and using it properly. Implementing these measures can effectively enhance the lifespan and performance stability of cutting fluids, thereby improving processing quality and efficiency.