Spray forming device for ultrahard aluminum lithium alloy

Abstract

The invention discloses a spray forming device for ultrahard aluminum lithium alloy. The device comprises a rotating mechanism, a lifting mechanism and a receiving disc. The device is characterized in that the lifting mechanism comprises a lead screw, a lead screw sleeve, guide rods and a lifting support; the lead screw sleeve is fixed to the middle of the lifting support, an internal thread inside the lad screw sleeve is in threaded connection with an external thread on the outer side of the lead screw, the two sides of the lifting support are provided with two sets of guide rod holes in the vertical direction, the two sets of guide rods penetrate through the guide rod holes, the two sets of guide rods are fixed between a chassis and a fixing base of a lifting motor, the rotating mechanism comprises a rotating shaft, a rotating motor and a rotating motor fixing base, the upper end of the rotating shaft is connected with the receiving disc, the two ends of the rotating motor fixing base are fixed to the front portion of the lifting support through fixing frames, the receiving disc is arranged at the lower portion of a settling chamber, a leakage bag is arranged on the side of the top of the settling chamber, and the lower portion of the leakage bag is communicated with the settling chamber through a nozzle. The device has the advantages of being high in forming speed, good in technological stability and high in finished ingot blank rate.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy spray forming, and in particular relates to a spray forming device for superhard aluminum lithium alloy. Background technique [0002] Aluminum-lithium alloy has low density, high elastic modulus, high specific strength and specific stiffness, good fatigue performance, excellent high temperature and low temperature performance, excellent corrosion resistance, excellent superplastic formability and good weldability, etc. Excellent comprehensive performance, its strength can be compared with 2024, 7075 and other aluminum alloys; using it to replace conventional high-strength aluminum alloys can reduce the structural weight by 10% to 20%, and increase the rigidity by 15% to 20%. Compared with composite materials, it has the advantages of high and low temperature resistance, damage resistance, repairability, and easy maintenance. Therefore, aluminum-lithium alloys have become the most potential...

AI Technical Summary

Problems solved by technology

However, the larger the size of the ingot, the greater the temperature gradient between the inside and the surface of the ingot during the cooling process, and the greater the difference in cooling speed, the easier it is to cause macro segregation and cause the ingot to crack and be scrapped. Therefore, it is difficult to produce three-dimensional large-scale castings with traditional casting technology. Aluminum-lithium alloy billet

[0011] There is also the use of powder metallurgy, which first rapidly solidifies the aluminum-lithium alloy into a powder with a uniform chemical composition, and then produces an aluminum-lithium alloy ingot by pressing and sintering; however, powder metallurgy has a long process, and the surface of the powder is easy to oxidize and introduce impurities. In addition to shortcomings such as difficulty in densification, large size is also a bottleneck that cannot be broken through. It is difficult to use powder metallurgy to meet the needs of aerospace large-sized aluminum-lithium alloy ingots

[0012] In summary, the production of industrial specifications aluminum-lithium alloys has a large technical bottleneck. It is almost impossible to produce three-dimensional large-scale aluminum-lithium alloy ingots that meet industrial applications by using traditional casting technology. specification of Al-Li alloys; therefore, the invention of a spray-forming device for superhard Al-Li alloys is of great significance for the large-scale application of Al-Li alloys

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