Titanium Alloy Product CNC Machining

Main reasons for higher titanium alloy machining costs: 1) High raw material price - titanium alloy is 5-10 times more expensive than ordinary steel; 2) Difficult machining requiring specialized tools (e.g., carbide or CBN tools) with fast tool wear; 3) Low machining efficiency - cutting speeds are usually low to avoid overheating and ensure quality; 4) Special cooling systems required during machining; 5) High-precision parts require multiple machining and inspection steps. These factors collectively contribute to higher titanium alloy machining costs.

With professional equipment and processes, titanium alloy CNC machining can achieve high precision: Dimensional accuracy up to ±0.005mm, geometric tolerance up to 0.01mm/m, surface roughness up to Ra0.02μm. Actual machining precision depends on part structure, size, and equipment. For large complex parts, precision may be lower. We will select appropriate machining equipment and processes based on specific part requirements to ensure meeting customer precision standards.

Titanium alloy material selection requires considering application environment and performance requirements: 1) General industrial applications recommend TC4 (Ti-6Al-4V) for excellent comprehensive properties; 2) For high corrosion resistance requirements, recommend TA2 pure titanium; 3) High-temperature environments (above 300℃) recommend TC11 or Ti-6242; 4) Medical implant applications recommend Ti-6Al-4V ELI or Ti-Nb-Zr alloys; 5) Low-temperature environments recommend Ti-5Al-2.5Sn. Our engineers will provide professional material selection advice based on your specific application scenarios.

Titanium alloy discoloration after machining is mainly due to surface oxidation caused by excessive temperature during processing. Titanium alloy has poor thermal conductivity (about 1/5 of steel), making heat dissipation difficult during machining, leading to localized high temperatures that form oxide films. Different temperatures produce different colored oxide films: Below 200℃ silver white, 200-300℃ light yellow, 300-400℃ dark blue, above 400℃ gray or black. By controlling cutting parameters, using efficient cooling systems and specialized tools, we can effectively control machining temperature to avoid or reduce discoloration.

Common surface treatments for titanium alloy: 1) Mechanical: Grinding, polishing, sandblasting; 2) Chemical: Pickling, chemical etching; 3) Electrochemical: Anodizing (achieves different colors and thicknesses of oxide films), electrolytic polishing; 4) Coating: Plasma spraying, physical vapor deposition (PVD), chemical vapor deposition (CVD); 5) Medical surface treatments: Hydroxyapatite coating, sandblasted acid etching (SLA). Different surface treatments give titanium alloy parts different properties like improved wear resistance, corrosion resistance, biocompatibility, or decoration.

Titanium alloy machining takes longer than common metals, primarily depending on part complexity, precision requirements, and batch size: Simple part prototypes usually complete in 3-5 days; Medium complexity prototypes 5-7 days; Complex high-precision prototypes 7-15 days. Small batch production (10-50 pieces) typically completes in 10-20 days after prototype approval; Medium batch (50-200 pieces) 20-30 days. Medical titanium alloy parts may take longer due to special processing and testing. We will arrange production plans according to order status and strive to meet customer delivery requirements.