How to use cutting fluid correctly for the longest lifespan?
Dec 02,2024
Reasonable use of metal cutting fluids can effectively reduce cutting force, lower cutting temperature, and minimize thermal deformation in the processing system, ensuring both the quality of the workpiece and extending tool life, thereby reducing processing costs.
The main functions of metal cutting fluids in metal processing are cooling, lubrication, cleaning, and rust prevention. The effectiveness of cutting fluids depends not only on the various properties of the cutting fluid itself but also on factors such as processing requirements, workpiece materials, tool materials, and processing methods, which need to be considered comprehensively to select the appropriate cutting fluid.
· Select according to processing requirements
During rough machining, the cutting volume is large, generating a significant amount of cutting heat, so a water-based cutting fluid with good cooling performance should be selected. For finishing, where the workpiece requires good surface quality and low surface roughness, a water-based cutting fluid or cutting oil with excellent lubrication performance should be used.
· Correspond to different processing methods
In metal processing, there are various cutting methods such as turning, milling, and drilling. Generally, for high-efficiency processing, water-based or pure oil cutting fluids should be selected according to different process requirements; for drawing and gear cutting, which require more expensive complex tools, pure cutting fluids are often chosen to ensure processing quality and tool lifespan.
· Select based on the materials of the workpiece and tool
Different materials of tools and workpieces have varying resistance to high temperatures, machinability, hardness, etc. For processing workpieces like gears with lower hardness, cutting fluids with higher lubrication properties should be used to prevent scratches on the gear surface; for difficult-to-machine materials like stainless steel, cutting oils or water-based extreme pressure cutting fluids with excellent extreme pressure performance are recommended.
· Refer to the characteristics of the machine tool itself for selection
For some expensive equipment, from a maintenance perspective, cutting fluids with stable physicochemical properties should be selected to prevent corrosion, rust, and obstruction of moving parts. However, for some open machine tools, oil-based cutting fluids are generally not recommended.
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