A kind of superplastic forming diffusion connection integrated forming die and method for parts with reinforcing ribs

Abstract

The invention discloses a superplastic forming diffusion connection integral forming mold and method for parts with reinforcing ribs. According to the part size, the size of a part blank is calculated, the blank is circled to be welded to form a cylindrical blank, a cylinder obtained after mold insert, reinforcing and seal operation finishing is put into a mold cavity, a seal ring is arranged on the mold, after mold assembly, heating is carried out, after the superplastic process is finished, the reinforcing ribs and the cylinder are completely attached to be subject to the diffusion connection process, cooling and mold stripping are carried out, and the cylindrical part with the reinforcing ribs is obtained. By means of the superplastic forming / diffusion connection integral forming technology, the titanium alloy cylindrical part with the reinforcing ribs is formed, the problem that cooling forming of titanium and a titanium alloy is difficult is solved, and it is ensured that the formed part is free of springback, the appearance is accurate and the machining allowance is small; the material utilization rate is improved, the weight of part components is effectively reduced, the working procedure and the cost of assembling connection are reduced, the mold cavity and a part inner cavity are independently sealed, the working procedure needed by the part is further reduced, the cost is reduced, and the time benefits of part machining are improved.

Description

technical field [0001] The present invention relates to a mold and method for superplastic forming, diffusion and connection integrated forming of parts with reinforcing ribs, especially a superplastic forming / diffusion and connection integrated forming mold and method for titanium and titanium alloys in a high-temperature sealed state, which is suitable for Forming dimensional accuracy, surface accuracy and surface quality requirements are high, and the outer surface needs to be connected with reinforcing ribs for regional reinforcement of cylindrical parts. Background technique [0002] Titanium alloys have high specific strength, good corrosion resistance and thermal stability, and are widely used in aerospace, rail transit, weaponry and other fields, but titanium and titanium alloys usually have high yield strength and elastic modulus at room temperature. Due to the characteristics of low weight and small stool range of plastic deformation, it is difficult for parts with...

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Problems solved by technology

[0003] The technical problem solved by the present invention is: to overcome the deficiencies in the prior art, and to provide an integrated forming abrasive tool and method for superplastic forming diffusion connection of parts with reinforcing ribs, which can overcome the problem of difficult cold forming of titanium and titanium alloy materials themselves. While achieving an effective weight reduction of 10%, it is ensured that the surface of the formed part maintains the roughness of the original plate, and the surface step difference does not exceed the design accuracy requirement of 0.3mm, and the forming process of superplastic forming-alkaline collapse and pickling-diffusion connection becomes A superplastic forming diffusion bonding integrated forming process shortens the processing cycle of parts from 130 hours to 70 hours, reduces a set of diffusion bonding molds and supporting tooling, and reduces time and economic costs

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