Excessive foam can reduce the cooling and lubricating performance of metalworking fluids, negatively affecting machining accuracy and production efficiency. To control foam quickly, actions can be taken on the following three levels:
Foam generation is often closely related to the formulation system:
Avoid using high-foaming surfactants.
Optimize the combination of emulsifiers and the emulsification process to form a stable emulsion structure.
Pre-add defoaming or antifoaming components that are compatible with the system.
Effective daily management can significantly prevent foam formation:
Strictly monitor working fluid concentration and fluid level; avoid concentrations that are too low.
Inspect the circulation system to prevent pipeline leaks or pump cavitation that may introduce excessive air.
Prevent contamination of the sump by tramp oils (such as way oil) or foreign chemicals.
When foam appears, defoamers are the most direct solution.
Correct selection of type and proper addition method are critical:
Silicone defoamers:Fast defoaming speed and strong antifoaming performance; suitable for most medium- to heavy-duty machining applications.
Non-silicone defoamers (such as polyether- or mineral-oil-based): Good compatibility and low residue risk; ideal for processes with high surface cleanliness requirements.
Addition tips: It is recommended to dilute before use and add slowly at points of fluid flow, following the principle of “small amounts added multiple times.” Avoid direct pouring or excessive dosing.
Foam issues require systematic analysis. DONGQIXIN CHEMICAL provides matched, high-performance silicone and non-silicone defoamer solutions for different metalworking fluid systems and operating conditions, helping you quickly restore stable production.
Export Manager：Mr.Michael
WhatsApp/Phone: +8618842660364
Email：dqx.md.michael@gmail.com
