Properties and Application of Titanium Alloy Forging Ring and Titanium Forgings

Titanium forgings have high strength, low density, good mechanical properties, good toughness and corrosion resistance. In addition, titanium forgings have poor technological performance, are not easy to cut, and easily absorb hydrogen, oxygen, nitrogen, carbon and other impurities during thermal processing. In addition, the wear resistance is poor and the production process is complicated. The industrial production of titanium began in 1948. With the development of the aviation industry, the titanium industry is growing at an average annual rate of about 8%. At present, the annual output of titanium forgings has reached more than 40000 tons, and there are nearly 30 kinds of titanium forgings. The widely used titanium forgings are Ti-6Al-4V(TC4),Ti-5Al-2.5Sn(TA7) and commercially pure titanium (TA1, TA2 and TA3).

Titanium forgings are mainly used to manufacture compressor parts for aircraft engines, followed by structural parts for rockets, missiles and high-speed aircraft. In the mid-1960s, titanium and its alloys were used in general industry, such as the manufacture of electrodes in the electrolysis industry, condensers in power stations, heaters for oil refining and desalination, and environmental pollution control devices. Titanium and titanium alloys have become corrosion-resistant structural materials. In addition, it is also used in the production of hydrogen storage materials and shape memory alloys.

Standard: GB/T 16598-1996

American Standard: ASTM B381

Material: TA0, TA1, TA2, TA3, TC4

Delivery status: annealing state (M) hot working state (R) cold working state (Y)(annealing, ultrasonic wave detection)

Packing: carton or wooden case packing

Surface treatment: car light, chamfer

Surface quality: the surface roughness Ra of the two end faces shall not be greater than 3.2 m (subject to the requirements of ultrasonic flaw detection), the surface roughness Ra of the inner and outer sides shall not be greater than 12.5m (Ra shall not be greater than 3.2 m for cylindrical ultrasonic flaw detection), and the chamfer radius shall be 5~15mm. The surface of the product shall be free of visible defects such as cracks, folds and double skins. Local surface defects can be removed by grinding, and the depth of cleaning should not exceed the dimensional tolerance, and should be small to the allowable size. The ratio of the cleaning depth to the width of the two end faces should not exceed 1:6, and the inner and outer sides should not exceed 1:10. The outside grinding shall be carried out in the axial direction.

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