Main characteristics and advantages of titanium explosion composite plate
1. Excellent corrosion resistance: The titanium layer can resist various strong corrosive media (such as chlorides, wet chlorine gas, nitric acid, organic acids, etc.), making it extremely durable in chemical and marine environments.
2. High cost-effectiveness: Compared to all titanium equipment, the cost is significantly reduced (usually only 1/3 to 1/2), and the economy is excellent while meeting corrosion resistance requirements.
3. High strength and stiffness: The steel substrate bears the main structural strength and can be used to manufacture pressure equipment such as large pressure vessels, towers, and storage tanks.
4. Flexible design: Different working conditions can be met by adjusting the material and thickness of the base and cover layers.
5. Good thermal conductivity: Titanium steel composite still has good thermal conductivity, suitable for manufacturing equipment such as heat exchangers.
Manufacturing difficulties and key technologies
The direct explosive composite of titanium and steel is one of the most difficult types of composite plates, mainly due to:
There is a huge difference in physical properties: the melting point, thermal expansion coefficient, density, acoustic impedance, etc. of titanium and steel differ greatly, especially at the interface where brittle intermetallic compounds (such as TiFe, TiFe ₂, TiC, etc.) are easily formed.
Key technical measures
Using an intermediate transition layer (interlayer): This is the most commonly used and effective method. Usually, a layer of pure tantalum (Ta), niobium (Nb), copper (Cu), Monel alloy, etc. is added between titanium and steel as a buffer layer. Effectively blocking the formation of brittle phases in titanium iron, these materials can form good bonds with both titanium and steel.
Accurate control of explosion parameters: including the type, density, detonation velocity, installation clearance (s), and dynamic collision angle (β) of explosives. Improper parameter control can easily lead to insufficient bonding strength or large-scale brittle cracking.
