Integrated manufacturing technology of hollow structures
Integrated manufacturing technology core stiffened structures.
Integrated manufacturing technology of hollow structures of high hardness of titanium alloys for aerospace applications have a high complex of physical-mechanical properties and based on the combination of welding pressure by superplastic forming. The integral technology allow to save metal, to reduce the weight of the structure to 30%, complexity of the operations to 40%.
Integrated manufacturing technology core structures of high hardness of titanium alloys, for example, from titanium alloy VT6, for aerospace applications based on the combination of welding pressure by superplastic forming.
This technology allows to reduce some of the manufacturing steps and to simplify the process of making different designs. So, technological operations related to the industrial use of titanium alloy VT6 with a grain size of several micrometers, which is held at a temperature of about 900°C, lead to the fact that on the surface alloys form the so-called alferovsky fragile layer, the removal of which is a separate labor-intensive and ecologically harmful operation.
And relatively low temperature at which pressure welding and superplastic forming (T<750 °C), allows, on the one hand, to move away from labor-intensive work associated with removal alvaromanso of the surface layer is made of semi-finished product, and promotes prolonged use of stamping equipment.
The decreasing of the temperature of the welding pressure and superplastic forming is achieved by using a sheet of semi-finished products with nanometric grain sizes.
Thanks to this technology of titanium alloys obtained geometrically-complex products, such as hollow fan blades, which are key components of turbojet aviation engines of new generation.
– a considerable saving of metal,
– reduced weight of the structure to 30%,
– reduced labor intensity of technological operations up to 40% ,
– fabricated construction and have a high complex physico-mechanical properties of the as at short-term exposure, and again-variable influences.