Titanium composite materials have achieved large-scale civilian transformation in the field of marine engineering anti-corrosion, relying on the advantages of high-strength and corrosion-resistant technology accumulated in the military industry. The following are the core developments and application scenarios:

1、 The core breakthrough in the civilian application of military technology

1. Extreme environmental adaptability

Ten thousand meter pressure resistance capability: Ti-6Al-4V ELI alloy manned cabin has been successfully applied to the "Striver" deep-sea submersible, withstanding an ultra-high pressure of 1100MPa in the Mariana Trench.

Corrosion resistance at sea depth: Ti31 titanium plate has a corrosion rate of ≤ 0.001mm/year at depths of 0-11000 meters, with no risk of pitting/crevice corrosion, and a lifespan 10 times longer than stainless steel.

2. Lightweight and economical

Optimization of density/strength ratio: The titanium alloy has a density of only 4.5g/cm ³ and a tensile strength of 900-1176MPa, significantly reducing the self weight of offshore platform structures.

Cost control breakthrough: The unit price of Ti31 titanium plate has been reduced to 380 yuan/kg, and large-scale production has promoted the popularization of civilian use.

2、 Large scale application scenarios and effectiveness

Desalination of seawater: Multi stage evaporator titanium heating tube, capable of withstanding 90 ℃ high salt seawater erosion, with equipment life extended to 30 years;

Marine oil and gas platform: titanium heat exchanger/drilling pipe/high-pressure riser, resistant to sulfide corrosion, drilling pipe life is 10 times that of steel products;

Deep sea aquaculture equipment: titanium alloy cage frame and connectors, resistant to biological adhesion and corrosion, reducing maintenance costs by 40%;

Binhai Power Station: Titanium condenser tubes and seawater circulation system solve chloride ion stress corrosion, reducing failure rate by 70%;

3、 The path of upgrading the entire industry chain

1. Manufacturing process innovation

Vacuum consumable melting+gradient controlled rolling technology solves the toughness problem of Ti80 thick plate core and ensures the performance of ship sonar fairing.

Narrow gap electron beam welding improves welding efficiency, with a weld strength coefficient of ≥ 0.92.

2. Domestic substitution process

Ti80 wide width board breaks the foreign monopoly and supports the localization of pressure resistant shells for deep-sea workstations.

By 2025, domestic production capacity will cover the demand for full titanium conversion of deep-sea submersibles up to 10000 meters.

3. Intelligent operation and maintenance

Titanium equipment integrates corrosion monitoring sensors and transmits real-time data to the Internet of Things platform.