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Cause Analysis of Damaged Cemented Carbide Milling Cutter Edge

  • Categories:News
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  • Time of issue:2022-11-30 16:24
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(Summary description)When cutting titanium alloys, due to the poor thermal conductivity of titanium alloys, chips are easily bonded near the tip of the tool or form built-up edge,

Cause Analysis of Damaged Cemented Carbide Milling Cutter Edge

(Summary description)When cutting titanium alloys, due to the poor thermal conductivity of titanium alloys, chips are easily bonded near the tip of the tool or form built-up edge,

  • Categories:News
  • Author:
  • Origin:
  • Time of issue:2022-11-30 16:24
  • Views:
Information

1. Processing material properties
When cutting titanium alloys, due to the poor thermal conductivity of titanium alloys, chips are easily bonded near the tip of the tool or form built-up edge, forming a high-temperature zone on the front and flank surfaces near the tip of the tool, which causes the loss of red hardness of the tool and wear exacerbated. In the continuous cutting under high temperature conditions, the bonded and welded materials are impacted by subsequent processing, and part of the tool material will be taken away during the process of being forced to rush away, resulting in chipping and breakage of the tool. In addition, when the cutting temperature reaches above 600°C, a hardened hard layer will be formed on the surface of the part, which will have a strong wear effect on the tool. The elastic modulus of titanium alloy is low, the elastic deformation is large, and the surface rebound of the workpiece near the flank is large, so the contact area between the machined surface and the flank is large, and the wear is serious.

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2. Improper operation
During the production and processing of titanium alloy casting boxes and box covers, improper operations such as unreasonable clamping, improper cutting depth, excessively fast spindle speed, and insufficient cooling will cause chipping, damage, and breakage of the tool. In addition to being unable to perform effective milling, this type of defective milling cutter will also cause surface defects such as concaves on the processed surface due to "knives" during the milling process, which not only affects the processing quality of the milled surface, but also causes the workpiece to be scrapped in severe cases.

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