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Choosing a carbide plate

Updated: 12.10.2022
Article author : Enex


1. The correct selection of the processed material is very important when choosing the tool and the initial processing modes. For convenience, the processed materials are divided into six main groups, which are combined by the type of load (deformation) exerted on the cutting edge and, therefore, have a similar type of wear. Therefore, it is first necessary to attribute the material of the workpiece to one of the groups.

Choosing a carbide plate


2. Determination of processing conditions for optimal choice of the hard alloy grade:

  • Roughing. Intermittent cutting in harsh conditions, a combination of large cutting depth and feed, large cutting forces.

  • Semi-frantic processing. Variable cutting depth, a wide range of combinations of cutting depth and feed, most general-purpose operations are semi-frantic.

  • Finishing. Continuous cutting, low cutting forces, pre-treated surface, small cutting and feeding depths.

The marking of the alloy is unique for each manufacturer. As an example, let's give the manufacturer's marking Kennametal:

Choosing a carbide plate


3. Choosing the shape of the plate

  • To ensure strength, you need to choose the maximum possible angle at the top of the plate, as well as the maximum possible radius at the top.

  • To reduce vibrations, you need to choose a smaller radius at the top.


4. The choice of optimal chip-breaking geometry is an important aspect. The shape of the chip depends on several factors: the properties of the material being processed (its tensile strength, viscosity and microstructure); the properties of the cutting material, especially its frictional properties; static and dynamic characteristics of the equipment, cooling, cutting edge geometry, cutting modes and the type of chip-breaking geometry. Almost all of these factors determine the shape of the chip during cutting: either segmented, which is easily removed from the cutting zone; either "drain" or in the form of a spiral that accumulates in the working area of the machine and prevents unhindered access to it.

Each chip-breaking geometry operates in a certain range of cutting modes. Chip-breaking geometries are created in such a way as to have the intersection of reliable chip-breaking areas with each other. Thus, the entire range of possible processing modes is fully covered: combinations of certain values of cutting depth and feed.

The marking of geometries is unique for each manufacturer and when choosing, you need to focus on the recommendations of the catalog.


Materials from Kennametal, Pramet, Walter catalogs were used.



See the carbide tool in the catalog of the Enex online exhibition: https://enex.market/catalog/Raskhodnye_materialy/metallorezhushchiy_instrument/tverdosplavnyy_instru...

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