METALWORKING – WHY USE LUBRICATING GREASES, OILS, AND PASTES?

THE IMPORTANCE OF COOLING AND LUBRICATION IN METAL MACHINING

Using cooling and lubricating agents during metal machining is essential for achieving high-quality results and extending tool life.

In this article, we will look at the main reasons why these products are indispensable and how to choose the right one for your application.

WHY ARE COOLING AND LUBRICATION IMPORTANT?

During metal machining, significant friction is generated between the cutting tool and the workpiece, producing large amounts of heat.

For example, when drilling stainless steel using a 5% cobalt HSS twist drill bit, temperatures can reach up to 1200 °C.

Without proper cooling and lubrication, both the cutting tool and the workpiece can overheat, negatively affecting machining quality and tool life.

FUNCTIONS OF COOLING AND LUBRICATING AGENTS

1. Reducing friction between the cutting tool and the workpiece

   Reducing friction is essential for minimising tool wear and extending tool life.
   Lower friction also means reduced energy consumption and improved machining efficiency.

2. Heat dissipation

   Efficient heat removal prevents overheating of both the cutting tool and the workpiece, reducing the risk of distortion and damage.

3. Chip removal

   Cooling and lubricating agents help collect and remove chips, keeping the working area clean while minimising the risk of damaging the workpiece.

4. Cleaning and corrosion protection

   High-quality products help clean the workpiece surface and protect it against corrosion, which is particularly important when machining metals susceptible to oxidation.

5. Improving workpiece surface quality

   Cooling and lubrication contribute to a higher-quality surface finish, which is essential for achieving the required dimensions and surface characteristics.
   A better surface finish also reduces the need for additional machining and polishing.

HOW TO CHOOSE THE RIGHT COOLING AND LUBRICATING AGENT

Selecting the right cutting fluid depends on the machining operation, cutting speed, workpiece material and the desired effect.

Various cutting lubricants are available, including cutting pastes, sprays and universal cutting oils.

FACTORS WHEN CHOOSING THE RIGHT PRODUCT

• Type of machining (drilling, countersinking, thread cutting)
• Machinability of the workpiece material
• Cutting speed
• Required accuracy and surface finish
• Heat sensitivity of the material

APPLICATION TABLE FOR COOLING AND LUBRICATING AGENTS

SUMMARY

Using cooling and lubricating agents is essential for efficient metal machining.

The main benefits include reduced friction, effective heat dissipation, improved chip removal, corrosion protection and a better surface finish on the workpiece.

Choosing the right cooling and lubricating product can significantly improve both the quality and efficiency of your machining operations.

If you have any questions or need help selecting the right product, please do not hesitate to contact us.