A kind of preparation method of rib titanium alloy hollow structural part and structural part
A hollow structure, titanium alloy technology, applied in building elements, sheets/boards, weight reduction, etc., to achieve the effect of convenient control and small deformation
Active Publication Date: 2022-08-09
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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Problems solved by technology
[0007] In order to solve the problems existing in the manufacture of the existing superplastic forming / diffusion bonding preparation method of the hollow sandwich structure of titanium alloy high ribs
A preparation method and structural parts of ribbed titanium alloy hollow structural parts are proposed
Method used
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Embodiment Construction
[0033] The present invention is described below with reference to the accompanying drawings, but is not intended to limit the scope of the present invention.
[0034] see figure 1 It is a flow chart of a preparation method of a rib titanium alloy hollow structural part of the present invention, including:
[0035] S1: The upper panel, the lower panel, the upper core panel and the lower core panel are preformed by the superplastic molding method, and the ribs are processed by the CNC machining method.
[0036] In order to avoid rib cracking during the forming process, two outer skin structures (ie, upper panel and lower panel) are first formed by superplastic forming. Then two core plates are superplastically formed, and ribs are CNC machined, but the height of the ribs is lower than the actual height of the formed ribs.
[0037] S2: Pickling the upper panel, the lower panel, the upper core panel, the lower core panel, and the ribs to remove the dirt and oxide skin on the sur...
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The embodiment of the present invention provides a method for preparing a rib titanium alloy hollow structural member. The method designs an upper core plate, a lower core plate, a rib, and the space therein is filled with BaCl 2 , After combined welding, put it into the space of the upper panel and the lower panel, wherein the lower panel and the lower core board are basically fitted, and the diffusion connection between the core board and the ribs will not cause the upper core board to collapse, Ribs are bent. Further, in the superplastic forming process of the upper core plate, the deformation is small, and the superplastic deformation of the upper core plate can be easily controlled by adjusting the height of the ribs, and the core plate will not be broken by exceeding the forming limit. , Therefore, titanium alloy hollow structures of various heights can be formed, as long as the mold and equipment conditions allow.
Description
technical field [0001] The invention relates to the technical field of metal plastic forming, in particular to a preparation method of a rib titanium alloy hollow structural part and the structural part. Background technique [0002] When the superplastic forming / diffusion bonding process is used to prepare the four-layer titanium alloy hollow sandwich structure, when the height of the ribs is high, it is easy to cause the core plate to rupture during the forming process due to the large local deformation of the core plate, and it is impossible to form a high The structural parts of the rib, and the higher the rib, the greater the technical difficulty of forming, and some even cannot be formed at all. In order to solve this problem, the forming process can only be optimized at present, but the degree of improvement is limited. Therefore, the superplastic forming / diffusion bonding process is limited in the preparation of high-rib structural parts, and it is generally impossi...
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IPC IPC(8): B23P15/00F16S1/10
CPCB23P15/00F16S1/10Y02T50/40
Inventor 李志强赵冰陈福龙
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST