Titanium alloy forgings are semi-finished products or components of titanium alloy processed through forging technology, which have high strength, lightweight, and excellent corrosion resistance, and are widely used in fields such as aerospace, shipbuilding, and chemical engineering.
1、 Core material characteristics
1. High strength and lightweight
The density is about 4.4g/cm ³, and the strength is close to high-strength steel.
Taking TC4 alloy as an example: tensile strength ≥ 850MPa, elongation ≥ 12%.
2. Corrosion resistance and high temperature stability
The dense oxide film on the surface makes it resistant to corrosion from seawater and acidic media, making it suitable for chemical equipment and marine engineering.
The working temperature can reach 400 ℃, used for high-temperature components of aircraft engines.
3. Process sensitivity
The forging temperature, deformation amount, and cooling rate significantly affect the microstructure and properties, and require precise control.
2、 Forging Process and Technology
1. Process flow
Heating: Heat treatment is carried out above the alpha beta phase transition point to improve plasticity.
Forging: using die forging, isothermal forging or closed die forging to control deformation and avoid defects.
Heat treatment: Solid solution aging improves strength, and the quenched section is ≤ 25mm.
2. Key technological breakthroughs
Isothermal forging: reduces deformation resistance and is used for thin-walled parts.
Near net forming: such as powder metallurgy+hot isostatic pressing, reducing costs by 50%.
Patent technology: Optimize temperature and time parameters to enhance the comprehensive mechanical properties of forgings.
3、 Industry technology trends
Material Innovation: Developing 1300MPa grade high-strength titanium alloy to enhance the load-bearing capacity of forgings.
Process optimization: Patent assisted devices improve the accuracy of flaw detection.
Precision manufacturing: Combining hot die forging with cold spinning to achieve near net forming of large and complex parts.
Summary: Titanium alloy forging technology continues to develop towards high strength, lightweight, and precision, and is irreplaceable in high-end equipment manufacturing.
