1. Processing difficulties caused by material properties

Low thermal conductivity: Titanium alloy has poor thermal conductivity (about 1/6 of steel), and the heat is easily concentrated at the edge of the tool during the cutting process, which leads to a sharp increase in the tool temperature and exacerbates wear.

High chemical activity: At high temperatures, it is easy to react chemically with tool materials (such as cobalt in cemented carbide) to form chip tumors and reduce tool life.

Low elastic modulus: it is easy to produce elastic deformation, which affects the machining accuracy, especially in the processing of thin-walled parts.

High strength and hardness: greater cutting force is required during processing, and the rigidity of the machine tool is high.

2. Tool and process challenges

Tool selection: special tools with wear-resistant coatings (such as diamond coatings), large front corners, and sharp edges are required, which are more expensive.

Cutting parameter limitations: the strategy of low speed, large feed, and proper cooling is required, and the efficiency is lower than that of ordinary steel.

Cooling requirements: High-pressure coolant must be used to dissipate heat in time and wash away the chips.

3. Additional difficulty of processing non-standard parts

Complex structure: Non-standard parts often contain special-shaped curved surfaces, deep holes, thin walls and other characteristics, which require multi-axis linkage processing, making programming and clamping difficult.

High accuracy requirements: aviation, medical and other fields have strict requirements for dimensional tolerances and surface roughness, and may require secondary finishing (such as grinding and polishing).

The process planning is complicated: the fixture needs to be customized according to the shape of the workpiece, and the process needs to be arranged rationally to reduce deformation.

4. Equipment and cost restrictions

Machine tool requirements: High-rigidity, high-power CNC machine tools (such as five-axis machining centers) are required, and they are equipped with a high-pressure cooling system.

High cost: material cost, tool loss, and process commissioning time all lead to processing costs that are significantly higher than ordinary metals.

Response measures

Optimize tools and parameters: special tools for titanium alloy are used to determine cutting parameters through tests.

Strengthen cooling and chip removal: use high-pressure internal cooling tools to avoid chip adhesion.

Phased processing: roughing leaves a margin, and the stress is eliminated by heat treatment before finishing.

The use of advanced technology: the use of high-speed processing, laser cutting, wire cutting and other auxiliary processes.

Application area

Despite the difficulty of processing, titanium alloys are still widely used in aerospace, medical equipment, chemical equipment, high-end sports equipment and other fields due to their high strength, corrosion resistance and good biocompatibility.

summary

The processing of non-standard parts of titanium alloy is a typical high-cost, high-tech process that requires rich material knowledge and process experience.When choosing a suitable supplier, it is necessary to focus on its equipment capabilities, technology accumulation and quality control system.For particularly complex parts, it is recommended to communicate with professional manufacturers in depth and verify the feasibility through process simulation or trial production.