5 Key Additives That Improve Performance in Metal Cutting and Grinding

Introduction

Not all metalworking fluids are created equal. What sets a high-performance formulation apart is the blend of additives designed to tackle real-world machining challenges. Here are five key additives that manufacturers should know about.

1. Extreme Pressure (EP) Additives

When cutting tough alloys, tool-workpiece contact can reach extreme loads. EP additives form protective layers that prevent welding and scoring, ensuring tools cut smoothly even under high stress.

2. Corrosion Inhibitors

These additives shield both machines and parts from rust. By forming a protective barrier, they extend tool life and ensure workpieces remain defect-free during storage.

3. Anti-Foaming Agents

High-speed machining often leads to foam formation, disrupting fluid circulation. Anti-foaming agents keep the system stable and efficient, reducing downtime and maintenance costs.

4. Biocides

Fluids are prone to bacterial growth, which can cause foul odours, reduce fluid effectiveness, and harm operators’ health. Biocides extend the shelf life by keeping microbial contamination in check.

5. Lubricity Improvers

Special fatty esters and synthetic compounds reduce friction, lowering heat generation and improving surface finish. This is particularly critical in grinding and finishing operations.

Conclusion

Choosing the correct metalworking fluid is not just about base oil or water—it’s about additive technology. By understanding what goes into your MWF, manufacturers can achieve better tool life, improved productivity, and lower total cost of ownership.