How to improve toughness of high hardness end mills

Categories:carbide end mills news
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Time of issue:2022-08-10 14:19
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(Summary description)During processing, problems often occur due to these reasons, and it is difficult to use it only in some occasions where toughness is required.

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How to improve toughness of high hardness end mills

(Summary description)During processing, problems often occur due to these reasons, and it is difficult to use it only in some occasions where toughness is required.

Categories:carbide end mills news
Author:
Origin:
Time of issue:2022-08-10 14:19
Views:

Information

Carbide tool is a tool with poor fracture toughness. During processing, problems often occur due to these reasons, and it is difficult to use it only in some occasions where toughness is required.

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The whiskers can absorb the energy of alloy crack propagation, and the magnitude of the absorbed energy is determined by the bonding state of the whiskers and the matrix. When the whiskers are pulled out from the alloy matrix under the external load, part of the external load energy is consumed due to the interface friction, so as to achieve the purpose of toughening. The toughening effect is affected by the sliding resistance between the whiskers and the interface. There must be a lot of binding force between the whisker and the substrate interface, so that the external load can be effectively transferred to the whisker, and the binding force should not be too large to ensure a sufficient pull-out length.
The addition of whiskers or particles with high elastic modulus into the matrix can induce a crack deflection and toughening mechanism. When the matrix is fractured, the whiskers can bear the external load and act as a bridge connection between the broken crack surfaces. The bridged whiskers can generate a force on the matrix to close the cracks and consume external loads to do work, thereby improving the toughness of the material.

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Next: What milling cutter should be selected for machining high hardness materials

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