Selecting Shear-Resistant Defoamers for High-Pressure Grinding Systems: Chemi Tech Technology Analysis

Failure Mechanisms in High-Pressure Systems

Traditional defoamers fail due to:

Shear Degradation: Pump shear forces break molecular structures;

Temperature Sensitivity: Emulsions split at >80°C;

Compatibility Issues: Reactions with lubricant additives cause flocculation.

Chemi Tech’s KM Series Innovations

Solutions include:

Reinforced Molecular Design: Polyether-siloxane networks withstand >50,000 rpm shear;

High-Temperature Base: PDMS carrier (viscosity >10,000 mPa·s) maintains stability at 120°C;

Self-Emulsifying System: Non-ionic emulsifiers prevent oil spots.

Case Study: Aerospace Alloy Grinding

For titanium alloy grinding under 25-bar coolant pressure:

Foam height stabilized at <2 cm (previously >15 cm);

Surface roughness Ra improved from 0.8 μm to 0.2 μm;

Coolant replacement cycles extended from 7 to 21 days.