In the metallurgy industry, controlling cutting fluids, cooling lubricants, wire drawing fluids, and quenching oils is a key performance factor. Each machining fluid helps to cool, lubricate, and protect parts and machine tools.
Filtres MONNET, a French manufacturer of filtration and fluid management systems, supports workshops and factories in the complete maintenance of their liquid circuits: from lifting to spraying, including chip separation, filtration, cooling, and oil removal.
1. Different types of fluids for metalworking
Fluids for metalworking can be divided into several categories according to their composition and use. They are chosen for their ability to provide effective cooling and long-lasting lubrication at the cutting point.
➤ Full oils
Pure oils, based on mineral oil or synthetic oil, provide maximum lubrication. They are ideal for threading, lapping, or slow cutting operations, where reducing friction is essential.
➤ Soluble oils and water-soluble oils
Soluble oils and water-soluble oils are water-miscible cooling lubricants.
Formed from emulsions or microemulsions, they both cool and lubricate the surfaces in contact. These cutting fluids offer a good compromise between performance and economy, provided they are kept optimally clean.
➤ Water-soluble polymers and synthetic fluids
Water-soluble polymers are a modern and environmentally friendly solution for intensive cooling. They are particularly used in hardening processes.
These synthetic fluids are stable, durable, and less susceptible to bacterial contamination, while offering excellent cooling power.
2. Fluid spraying and circulation: from lifting to high pressure
Tool spraying is essential to ensure a clean cut and controlled temperature.
Using high- or low-pressure pumps, the cutting fluid is sprayed directly into the machining area to cool the workpiece and lubricate the contact surface.
MONNET fluid management units allow you to control the entire circuit:
- Lifting and transfer of liquid,
- Chip separation,
- Fine filtration and oil separation,
- Cooling of the cooling lubricant,
- Controlled distribution to machine tools.
Thanks to this centralized management, workshops can guarantee the stability of the cutting fluid and optimize tool life
3. Filtration: a major challenge for the cleanliness of machining fluids
Over time, cutting fluids become contaminated: chips, foreign oils, fine particles, and bacteria degrade their lubricating and cooling properties.
Filtres MONNET filtration units provide complete fluid maintenance by combining:
- Decanting and mechanical separation of chips,
- Continuous filtration,
- Automatic oil separation,
- Concentration and pH control.
Controlled cleanliness allows you to:
✅ preserve machining quality,
✅ extend tool life,
✅ reduce maintenance costs,
✅ and ensure a healthier working environment.
4. Liquids for quenching and heat treatment
In addition to machining fluids, the metalworking industry also uses quenching oils for heat treatment.
These metalworking fluids—based on mineral oil, synthetic oil, or water-soluble polymers—are used to cool heated parts in order to obtain the desired mechanical properties (hardness, strength, dimensional stability).
Here again, the cleanliness of the quenching liquid and control of the cooling process are essential to guarantee the final quality of the parts.
5. MONNET filters: the benchmark in comprehensive industrial fluid management
For several decades, Filtres MONNET has been designing and manufacturing filtration and machining fluid management systems in France for mechanical engineering, bar turning, and metallurgical production workshops.
Its solutions cover the entire cutting fluid cycle:
- Automatic liquid recovery,
- Controlled spraying,
- Chip separation,
- Filtration and cooling,
- Degreasing and recycling.
By ensuring clean and stable fluids, MONNET filter equipment optimizes cutting performance, reduces the consumption of cooling lubricants, and extends the service life of machine tools.
Conclusion: fluid cleanliness, a lever for sustainable performance
In modern metallurgy, cleanliness, filtration, and intelligent management of machining fluids are strategic levers for improving the quality, profitability, and sustainability of processes.
With its high-performance filtration systems, Filtres MONNET supports manufacturers in their commitment to responsible production, where every cutting fluid, soluble oil, or cooling lubricant is optimized to effectively cool, lubricate, and protect equipment.