Defoamers for Cutting Fluid & Metal Working Fluids

Foam is a persistent challenge in metal working fluids (MWF), cutting fluids, and coolants. It can cause sump overflow, reduce lubrication, cause pump cavitation, and lead to poor surface finishes on the final parts.

INVINO provides a complete line of high-performance cutting fluid defoamers, including silicone, non-silicone, and mineral oil-based types, engineered to provide rapid foam knockdown and persistent foam control.

MWF defoamer
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Solving Foam Challenges in Machining & Grinding

Uncontrolled foam in metal working fluids leads to significant operational problems:

  • Reduced Lubrication & Cooling:Foam acts as an insulator, preventing the fluid from properly cooling and lubricating the tool and workpiece.
  • Pump Cavitation & Sump Overflow:Entrained air can damage pumps, while surface foam causes costly overflows and a hazardous work environment.
  • Poor Part Quality & Reduced Tool Life:Inefficient cooling and lubrication leads to poor surface finishes, inaccurate dimensions, and accelerated tool wear.
  • Increased Fluid Maintenance Costs:Foam can lead to premature fluid degradation and higher biocide usage.

INVINO’s Defoamer Solutions for Metal Working Fluids

To address these issues, we recommend our highly effective cutting fluid defoamers. They are designed for high stability and compatibility with various fluid types (synthetic, semi-synthetic, and mineral oil-based).

INVINO-M780: High-Performance Metalworking Defoamer

  • Designed for high-temperature, high-shear systems in ferrous metal processing.
  • Excellent stability and fast-breaking, suitable for synthetic and full-synthetic cutting fluids.

INVINO-M602: Eco-Friendly Water-Based Cutting Fluid Defoamer

  • Silicone-free, preventing issues in coating and degreasing processes.
  • Ideal for water-based cutting fluids and grinding coolants.

Industry Case Studies: Successful Applications of INVINO Defoamers

Case 1: Automotive Parts Manufacturer (Using INVINO-M780)

  • Problem:Excessive foam in the machining process affected cooling, causing high workpiece temperatures.
  • Solution:After applying INVINO-M780, foam was reduced by 95%, and cutting fluid lifespan increased by 30%.
  • Result:Improved production efficiency and reduced tool wear.

Case 2: Precision Machining Factory (Using INVINO-M602)

  • Problem:Excessive foam in water-based cutting fluid triggered machine alarms and shutdowns.
  • Solution:After adding INVINO-M602, foam dissipated immediately.
  • Result:Machine downtime was reduced by 80%, and machining quality improved.


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    Q&A: Precision Control for Metalworking

    Q: Will it affect downstream painting or plating (Silicone Spots)?
    This is the #1 concern in automotive and aerospace parts manufacturing. Traditional silicone oils can cause "fish eyes" or adhesion failure in subsequent painting processes. We recommend our **Modified Polyether** or **Paint-Compatible Organic Silicone** series, which rinse off completely and are guaranteed **not to interfere with coating adhesion**.
    Q: Can it defoam "Fully Synthetic" grinding fluids?
    Yes. Fully synthetic fluids (containing no mineral oil) are notorious for creating fine, stable micro-foam that is hard to break. Our specialized **Block Copolymer** defoamers are designed to be soluble at low temperatures but active at the cutting interface temperature, effectively breaking this transparent, stubborn foam.
    Q: Is it stable under high-pressure CNC spraying?
    Modern CNC machines operate at high pressures (often > 1000 psi). Ordinary defoamers will emulsify and fail rapidly under this shear. Our MWF-grade products feature exceptional **Shear Stability**, ensuring they remain effective for the entire lifespan of the coolant sump without separating.
    Q: Will the defoamer clog the fine filters?
    No. Clogging usually happens when a defoamer forms large, insoluble oil droplets (Grease balls). Our products are formulated with excellent **self-emulsification** properties and small particle size distributions, allowing them to pass through standard mesh filters and paper media without causing back-pressure build-up.
    Q: Does it interfere with Tramp Oil skimmers?
    No. "Tramp oil" (leaked hydraulic/way oil) must be skimmed off to prevent bacteria. Our defoamers are designed to selectively target surface foam without emulsifying the tramp oil, allowing the oil skimmers to function efficiently and keeping the coolant clean.