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Analysis of Wear Causes of Cemented Carbide Milling Cutter

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

Analysis of Wear Causes of Cemented Carbide Milling Cutter

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

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1. Processing material properties
When cutting titanium alloys, due to the poor thermal conductivity of titanium alloys, chips are easily adhered to the vicinity of the cutting edge of the tool tip or form a built-up edge, and a high temperature zone is formed on the front and flank surfaces near the tool tip, causing the tool to lose its red hardness and wear. exacerbated. In continuous cutting under high temperature conditions, the bond and weld are impacted by subsequent processing, and part of the tool material will be taken away during the forced flushing process, resulting in tool defects and damage. Titanium alloy has low elastic modulus, large elastic deformation, and large amount of rebound of the workpiece surface near the flank, so the contact area between the machined surface and the flank is large, and the wear is serious.

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2. Normal wear and tear
In normal production and processing, when the allowance of continuous milling titanium alloy parts reaches 15mm-20mm, there will be serious blade wear. Continued milling is inefficient, and the surface finish of the workpiece is poor, which cannot meet production and quality requirements.
3. Improper operation
During the production and processing of titanium alloy casting boxes and box covers, improper operations such as unreasonable clamping, unsuitable cutting depth, excessive spindle speed, and insufficient cooling will lead to tool chipping, breakage, and breakage.

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