Can Cutting Fluid Be Used in Tungsten Carbide Cutting Tool

Details: Category: Tungsten Information; Published on Thursday, 06 November 2014 18:29

Tungsten carbide cutting tool normally do not adopt cutting tool for cooling during machining. It is because that tungsten carbide is of high hardness (aboutHRC90), and can allow high cutting temperature (up to 1000℃), so the absence of cool fluid does not affect its cutting. In addition, due to its sensibility towards to shock heating, adopting cutting fluid may caused its tipping.

So, is that true that tungsten carbide cutting tools absolutely do not allow for the adopting of cutting fluid during cutting? The answer is yes, but it is conditional. Operator should pay attention to some points as follows if they want to apply cutting fluid in the cutting:

I. Using oil-based metal cutting fluid with antiwear additive

Oil-based metal cutting fluid has poor heat conduction property, and thus will not cause shock chilling on the tool. Also, oil-based metal cutting fluid can easily stick to the tool and thus help to keep a stationary temperature for the tool.

II. Cooling tungsten carbide cutting tools evenly

The cooling towards cutting tools by cutting fluid should be done evenly in case of tools being hot and cold and finally results in tool tipping.

III. Cooling tungsten carbide cutting tools in the whole process

Before the cutting starts, the operator had better open the cutting fluid in advance and the cooling fluid should be adopted in the whole cutting process without stops.

The cutting fluid, if used properly with the above mentioned points, can not only protect tungsten carbide cutting tools, but also improve the cutting precision, because the oil-based metal cutting fluid, when used in the cutting to cool the tools, can also lubricate the tools and the machining areas of workpieces and thus improve the surface machining quality.

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