Product classification
Titanium Alloy Machinery Parts
High strength (such as TC4 tensile strength ≥ 900MPa), high temperature resistance, but extremely poor thermal conductivity (only 7W/m · K).
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Details Introduction
Material characteristics and processing challenges
Characteristic
High strength (such as TC4 tensile strength ≥ 900MPa), high temperature resistance, but extremely poor thermal conductivity (only 7W/m · K).
The temperature concentration in the cutting area can easily lead to rapid tool failure.
Processing strategy
Low speed (<100mm/min), high feed rate, combined with high-pressure cooling (nitrogen or specialized cutting fluid);
The preferred cutting tool is hard alloy or cubic boron nitride (CBN).
Typical application areas
| Material | Applied economy | Example of representative parts |
| Titanium alloy | Aircraft engine blades, human bone implants, high-end bicycle frames | Turbine disk, artificial joint |
CNC machining methods and process optimization
Tool selection and parameter design
Cutting tools: YG hard alloy (anti chipping edge), TiCN coating;
Parameters: cutting speed of 30-80m/min, feed rate of 0.1-0.3mm/tooth.
Cooling and lubrication technology
Water based cutting fluid: suitable for aluminum alloys and copper, balancing cooling and cleaning;
Oil based cutting fluid: used for stainless steel and titanium alloys to reduce cutting temperature;
High pressure gas cooling: prevents chemical reactions between materials and cutting tools during titanium alloy processing.
Special Process Technology
High speed milling (HSM)
For thin-walled aluminum alloy parts, small cutting depth and high speed (such as 20000 RPM) are used to reduce deformation.
Car milling composite processing
Titanium alloy complex curved parts (such as impellers) can complete multiple processes in one clamping, with an accuracy of ± 0.01mm.
Micro processing
Copper micro heat sinks use tools with a diameter of 0.1mm, and the spindle speed needs to exceed 50000 RPM.
Common Problems and Solutions
Titanium alloy cutting tools with broken edges
Reason: Fluctuations in cutting force or insufficient rigidity of cutting tools;
Solution: Reduce the feed rate to 0.05mm/tooth and use short blade cutting tools to enhance rigidity.
Future Development Trends
1. Intelligent machining system: Real time monitoring of cutting force and temperature through sensors, automatic optimization of parameters (such as Adaptive CNC);
2. Green manufacturing: promote micro lubrication (MQL) technology to reduce cutting fluid pollution;
3. Additive subtractive composite processing: Integration of 3D printing and CNC precision machining of titanium alloy aviation parts.
Key words:
Testing and Inspection
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