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50% of the world's titanium materials are used in the aerospace industry, and 30% of military aircraft bodies use titanium alloy. The amount of titanium used in civilian aircraft is also gradually increasing. Titanium alloy is mainly used to manufacture the shells of rockets and missile engines, fuel and oxidant storage tanks, and spacecraft cabins and skeletons, which can reduce the weight of missiles, rockets, and spacecraft by hundreds of kilograms. This not only improves their flight performance, but also saves a lot of expensive advanced fuel and reduces manufacturing and launch costs.
In these fields, the starting point of titanium application is based on the low density, high specific strength, good heat resistance, good low-temperature resistance, and excellent corrosion resistance of titanium and titanium alloys. In order to adapt to the application of titanium alloys in aviation and other fields, dozens of grades of titanium alloys have been developed, with the largest usage being Ti-6A1-4V, standard is AMS 4928.
Position | Representative material | Required characteristics | Production method |
fan casing | Ti-6A1-4V | High strength and impact resistance | Circular rolling |
Fan blade (moving wing) | Ti-6AJ-4V | Impact and fatigue resistance | Forging or superplastic forming+Diffusion bonding |
Fan shroud | Ti-6A1-4V | High strength and good toughness | casting |
Fan disc components | Ti-6A1-4V/Ti-1T Ti-6Al-2Sn-4Zr-6Mo | Low-cycle fatigue, good toughness | casting |
Compressor hood | Ti-6A1-4V | Good creep, fatigue resistance, and thermal fatigue resistance | Circular rolling |
Compressor blade (Moving wing, stationary wing) | Ti-6A1-4V Ti-6Al-2Sn-4Zr-6Mo Ti-8Al-lMo-lV | Good impact resistance, fatigue resistance, and toughness | Forging and casting |
Compressor disc components | Ti-6A1-4V/Ti-1T Ti-6Al-2Sn-4Zr-6Mo Ti-6Al-2Sn-4Zr-2S IMI834 | Low-cycle fatigue, good toughness, high temperature strength, good creep | forging |
Short axis | Ti-6A1-4V | Good fatigue resistance and toughness | casting |
Mark: Ti-1T： Ti-5Al-2Sn-2Zr-4Cr-4Mo IM1834：Ti-5. 8Al-4Sn-3.5Zr-0.7Nb-0.5Mo-0. 35Si | |||
Specification: Dia.8~30mm by hot rolling process
Dia.30~400mm by forging process
State: Annealed
Item | N (max) | C (max) | H (max) | Fe (max) | O (max) | Al (max) | V (max) |
Ti-6Al-4V | 0.05 | 0.08 | 0.0125 | 0.30 | 0.20 | 5.5-6.75 | 3.5-4.5 |
Size | Tensile strength (Min) | Yield strength (Min) | Elongation in 4D, Min % | Reduction of Are Min % |
≤50.8 | 931 Mpa | 862 Mpa | 10 | 25 |
＞50.8—101.60 | 896 Mpa | 827 Mpa | 10 | 25 |
＞101.60—152.40 | 896 Mpa | 827 Mpa | 10 | 20 |
(1) Strictly implement the requirements of ISO9001:2015, and conduct 100% ultrasonic testing on raw materials, titanium ingots, and finished products, with inspection reports issued.
(2) Entrust a third-party authoritative organization to conduct physical, mechanical, and high magnification metallographic testing, and issue a testing report.
(1) The company adopts advanced domestic melting equipment - a 3-ton dual chamber vacuum consumable arc furnace for multiple melting operations. The entire melting process is fully automated, with high control accuracy and short melting cycle. The produced titanium ingots have uniform chemical composition, no inclusions, no segregation, small shrinkage holes, and high yield of titanium ingots. According to the requirements for aerospace titanium, multiple melting processes are adopted to make the chemical composition of the product more uniform, the grain size finer and evenly distributed, ensuring the physical properties of the product.
(2) The company adopts advanced forging equipment - a 2000 ton free forging oil press for blank forging, which can be controlled by a fixed range and pressure, and the hydraulic press can be operated on the same platform. The product's organizational structure can be changed internally, improving the mechanical properties of the product. The forged titanium and titanium alloy products have uniform internal structure and stable and reliable performance.
(3) According to the requirements for titanium used in aerospace, the use of multiple pier drawing processes during the forging process can effectively ensure the organizational structure of the product and improve its mechanical properties.
(4)The natural gas furnace and electric furnace used for forging both adopt PLC automatic control system. Set the program to automatically heat up, maintain insulation, and record heating data automatically. Melting, forging, and various heating data are traceable.
Main production equipment: 3500T electrode press, 3-ton dual chamber vacuum consumable electric arc furnace, 2000T and 3500T free forging hydraulic press, 750kg air hammer, natural gas heating furnace, resistance heating furnace, lathe, sawing machine, etc.
Packaging: According to customer requirements or negotiation (export standard wooden box packaging).
No.26 Baotai Road, Weibin District, Baoji City, Shaanxi, China.
No.26 Baotai Road, Weibin District, Baoji City, Shaanxi, China.
