Titanium coiled strip is produced by rolling titanium into continuous coiled sheets or strips, typically with a thickness of 0.1–5 mm and a width of up to 2,000 mm. Based on material composition, it can be classified as follows:
Pure titanium coils and strips: Highly corrosion-resistant, used in the chemical and medical/healthcare industries.
Titanium alloy coils and strips: High strength or with special properties, used in aerospace and defense applications.
1. Key Features
Lightweight: Density of only 4.51 g/cm³; relatively low hardness, requiring alloying for reinforcement;
Corrosion Resistance: Resistant to seawater, acids, and alkalis; extends the service life of chemical processing equipment by 5 to 10 times; not resistant to hydrofluoric acid or concentrated sulfuric acid;
Biocompatibility: Non-toxic and resistant to rejection; suitable for medical implants, though more expensive than stainless steel;
High-Temperature Stability: Some alloys can operate continuously at 500°C; pure titanium experiences a rapid decline in strength at high temperatures;
Formability: Can be stamped, welded, and bent; compatible with various processing methods; exhibits significant springback and requires specialized dies.
2. Production Process Flow
Titanium sponge → Smelting → Ingot casting → Hot rolling → Cold rolling → Annealing → Surface treatment → Slitting into coils
Key Process Control Points:
Hot rolling temperature: Must be above the β phase transformation point to prevent cracking.
Cold rolling deformation: Typically controlled between 30% and 70%; excessive deformation can lead to embrittlement.
Annealing Process: Eliminates stress and restores plasticity.
3. Application Areas and Market Demand
Chemical Equipment: Reactor linings, heat exchanger tube sheets;
Aerospace: Aircraft skin, engine thermal insulation;
Consumer Electronics: Smartphone frames, heat sinks;
New Energy: Hydrogen fuel cell bipolar plates
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