Products Description
Ι.Product Features
1. Material and Structure
Manufactured from industrial pure titanium or titanium alloys such as GR1, GR2, and GR10 through processes including cold rolling, welding, and extrusion.
Tube sheet thickness typically ranges from 0.5 to 4.5 mm, with outer diameters spanning 4 to 2800 mm. Tube hole perpendicularity tolerance is ≤0.06 mm.
2. Corrosion Resistance
The surface oxide film provides excellent resistance to seawater, chloride, and sulfide corrosion, making it suitable for harsh environments like chemical plants and offshore platforms.
Corrosion rates are significantly influenced by medium concentration, temperature, pH, and flow velocity.
3. Process Precision Requirements
Tolerances for tube hole spacing and surface finish directly impact equipment sealing integrity, necessitating strict control of drilling accuracy.
Polymer composites can repair tube sheet corrosion, extending service life through processes like sandblasting, pit filling, and coating application.
II. Manufacturing Process
1. Cutting and Pre-treatment: Titanium plates are cut using plasma or waterjet cutting to avoid oxidation caused by flame cutting. After cutting, remove burrs and scale from edges, then degrease with specialized cleaning agents.
2. Forming: Plate outer forming is achieved through stamping, rolling, or CNC milling. Specialized dies and lubricants are used during this process to prevent hard damage or grain deformation in the titanium material.
3. Hole Machining (Critical Step): Tube holes are machined using CNC drilling or boring machines, prioritizing carbide or diamond tools. Cutting speed and feed rate are controlled to prevent tool adhesion. Hole walls must achieve a surface roughness of Ra ≤ 1.6μm to ensure sealing integrity during assembly with titanium tubes.
4. Surface Treatment: Acid pickling removes oxidation layers generated during machining. Passivation is applied when necessary to enhance corrosion resistance.
Inspection and Assembly: Bore position accuracy and inner wall quality are verified using endoscopes and bore gauges. Final assembly involves expansion joining or welding of tube sheets to titanium tubes.
III. Application Scenarios
1. Energy and Chemical Engineering
Used in condensers, evaporators, and nuclear power tubing to replace copper alloy pipes, enhancing corrosion resistance and service life.
2. Aerospace
Manufacturing aircraft engine compressor components and fuel tanks, leveraging titanium's lightweight properties and high strength-to-weight ratio.
3. Marine Engineering
Ship cooling systems and deep-sea pressure-resistant hulls, resisting seawater erosion corrosion with high acoustic transmission coefficients.
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