Titanium Bolt
Processing Technology Of Different Titanium Bolts
1. Processing Technology Of Pure Titanium Bolts
Core Process: Blanking → Turning/Milling → Solution Annealing (700–750°C) → Rolling Threads → Surface Treatment (Anodizing Or Plating) → Inspection.
Process Focus:
Annealing eliminates cold working stress and avoids cracking;
Surface anodizing improves corrosion resistance (e.g. blue anodizing).
2. Titanium Alloy Bolt Process (Ti6AlV)
Core Difficulty: High strength and low plasticity lead to hot heading that is easy to bond to the mold and wrinkle/fold the head.
Key Innovations:
Surface Fluoroborocarbon Lubrication:
(1) Hydrofluoric acid-nitric acid mixture to remove the oxide layer;
(2) Potassium fluoroborate solution (90–95°C) generates a lubricating film to reduce upsetting bonding.
Precision Hot Upsetting:
High-frequency induction heating (up to 600°C±10°C in 5–8 seconds);
Tungsten carbide mold high-speed steel pressure rod, with cushion sleeve to protect the life of the mold.
Intensive Heat Treatment:
Solution Treatment: Vacuum incubation at 910°C±10°C for 1–2 hours, water quenching (transfer ≤ 10 seconds);
Aging Treatment: 510 °C± 10 °C heat preservation for 8 hours, argon cooling, to achieve σb≥1100MPa.
Threading:Hot rolling (300–450°C) increases thread strength, and the lower R-angle of the cold extrusion head reduces stress concentration.
Comparison Of Application Fields Of Titanium Bolts
1. Pure Titanium Bolts: The first choice for strong corrosive environments
Chemical/Offshore Engineering: Pipeline flanges of seawater desalination equipment, chlor-alkali reactor seals (resistant to hydrochloric acid/brine corrosion).
Biomedical: Non-force-bearing implants (e.g., cranial fixation plates), which are biocompatible and non-magnetic.
2. Titanium Alloy Bolts: High-strength and lightweight scenes dominate
Aerospace: Engine blade fastening, landing gear connection.
Medical Devices: Orthopedic load-bearing screws, dental implants.
New Energy Vehicles: Battery pack high-voltage connectors, lightweight body.
Marine Engineering: Deep-sea platform anchorage, submarine pressure-resistant shell.
High-End Manufacturing: 3D printed impeller fastening, racing chassis.
Certificate:SGS,BV,MTC,ISO9001-2016
Place of Origin:Shaanxi Baoji China
Payment Terms：T/T，L/C
Brand:ZLDC
