Product classification
Brass Machinery Parts
Pure copper (purple copper) has strong ductility and is prone to producing growth chips; Brass (such as H59) has good machinability.
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Details Introduction
Material characteristics and processing challenges
Characteristic
Pure copper (purple copper) has strong ductility and is prone to producing growth chips; Brass (such as H59) has good machinability.
The thermal conductivity is high (about 400W/m · K), and thermal deformation needs to be controlled.
Processing precautions
Avoid burrs caused by low-speed processing; Prioritize using sharp cutting tools (such as tungsten steel knives).
Typical application areas
| Material | Applied economy | Example of representative parts |
| Copper/Copper Alloy | Electronic connectors, valve components, art casting | Circuit heat sink, bronze sculpture |
CNC machining methods and process optimization
Tool selection and parameter design
Cutting tools: tungsten steel end mills with sharp edges;
Parameter: High speed (8000-15000 RPM) to avoid material adhesion.
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.
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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