Titanium Tube Manufacturing Process
1. Extrusion-Rolling Combined Process
Steps: Billet → Punching → Jacket Extrusion → Surface Treatment → Billet Rolling → Multi-Pass Cold Rolling → Intermediate Annealing → Finished Product Inspection.
Features: Can produce ultra-long tubes up to 2mm in diameter with a wall thickness tolerance of ±0.05mm, suitable for high-pressure and high-temperature applications.
2. Cross-Rolling Piercing Process
Suitable for large-diameter, thick-walled tubes. Hollow billets are formed using a cross-rolling mill and subsequently cold-rolled for finishing.
3. Spinning Process
Advantages: Can produce ultra-large-diameter, thin-walled tubes, increasing material utilization by 20%-50%, with a surface roughness Ra <0.8μm.
Limitations: Requires high-precision tube billets, resulting in significant deformation non-uniformity.
Welded Titanium Tube Manufacturing Process
1. Longitudinal Seam Welding Process
Process: Titanium strip coiling → Longitudinal seam argon arc welding → Online inspection → Sizing and straightening.
Application: Suitable for thin-walled tubes, with high production efficiency and 30% lower cost than seamless tubes.
2. Spiral Welding Process: A Titanium strip is rolled using a spiral forming machine, achieving weld strength up to 95% of the parent material, suitable for large-diameter transmission pipelines.
Special Processing Technologies
1. 3D Printing Additive Manufacturing: Electron beam melting technology is used to directly form complex titanium tube structures, such as topologically optimized heat dissipation tubes, with a porosity of <0.5%.
2. Composite Processing Technology: Combining spinning and expansion processes to produce special-shaped tubes, with expansion controlled at 1.2%-1.5% to prevent cracking.
