3 results about "Titanium aluminide" patented technology

The utility model belongs to the technical field of spiral bevel gear machining, and discloses a spiral bevel gear tooth crest rounding device which comprises rounding equipment, a fixing frame is installed on the top of the rounding equipment, a cutter is arranged above an operation area of the rounding equipment, a protective cover is arranged on the outer surface of the cutter, and the protective cover is installed on the fixing frame through an external transmission system. A cooling mechanism is installed on the rounding device and comprises a high-pressure pump body installed on the fixing frame, a spray head is installed on the protective cover, the spraying direction of the spray head faces a tool bit of a tool, an oil storage tank is installed on the rounding device, a liquid inlet pipe is arranged between the high-pressure pump body and the oil storage tank, and the liquid inlet pipe is communicated with the oil storage tank. A liquid drainage channel is arranged between the spray head and the high-pressure pump body, the tool is made of hard alloy materials, and the surface of a tool bit of the tool is coated with a titanium aluminum nitride abrasion-resistant coating. According to the utility model, not only can the cutter be conveniently cooled, but also the phenomenon of tipping caused by uneven stress of heat generated by heating can be avoided.

The application discloses a high-performance gamma-based titanium-aluminum alloy and an additive manufacturing method thereof, and the additive manufacturing method comprises the following steps: selecting suitable titanium-aluminum alloy powder and aluminum powder; mixing the titanium-aluminum alloy powder and the aluminum powder to obtain mixed powder; feeding the mixed powder into an SLM device to print under an inert gas protection atmosphere, so that a printed alloy blank with a density of greater than or equal to 97% is obtained, and at this time, a mixed structure of titanium-aluminum intermetallic compounds and aluminum phases is preliminarily formed in the blank; placing the printed alloy blank into a hot isostatic pressing device to perform hot isostatic pressing treatment; and performing solid solution heat treatment on the alloy after the hot isostatic pressing treatment. The application breaks through the collaborative difficulties of 'SLM forming-defect elimination-phase regulation', optimizes the process chain, and has the advantages of process simplicity and cost advantage while ensuring the high performance of the gamma phase, is the optimal solution for solving the bottleneck of titanium-aluminum additive manufacturing at present, and meets the use requirements of aero-engine low-pressure turbine blades.

The application provides a method for connecting titanium aluminum carbide and niobium by adopting a titanium intermediate layer and a connected joint, and relates to the technical field of welding. The method comprises the following steps: S1, preparing a component to be connected; the component to be connected is formed by sequentially stacking titanium aluminum carbide base material, an intermediate layer and niobium base material from top to bottom, and the material of the intermediate layer is titanium; S2, performing discharge plasma sintering on the component to be connected under a preset air pressure to obtain a connected joint. By adopting the method, the cracking of the joint can be inhibited, the decarburization or Al evaporation of Ti3AlC2 at high temperature can be inhibited, thereby the deterioration of the base material is inhibited; the generation of brittle intermetallic compounds can be avoided, which is helpful to improve the interface bonding strength, thereby the strength of the connected joint is improved.