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A kind of superplastic forming, diffusion connection mold and preparation method of thin-walled large inclination angle parts

A technology of diffusion joining and superplastic forming, applied in the field of titanium alloy processing, can solve the problems of difficult to control precision, mismatch between mold surface and product, poor surface quality of parts, etc. The effect of improving the sealing effect

Active Publication Date: 2022-07-15
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to: in the forming process of thin-walled and large-inclination parts in the prior art, the sealing effect of the sealing rib is poor, and there are molds in the diffusion connection and superplastic molding stages by adding peeling panels between the moulds. The surface does not match the product, the precision is difficult to control, the surface quality of the part is poor, and the technical defects of the formed part need to be polished later. Provide a superplastic forming and diffusion connection mold for thin-walled and large-inclination parts that can effectively improve the sealing performance

Method used

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  • A kind of superplastic forming, diffusion connection mold and preparation method of thin-walled large inclination angle parts
  • A kind of superplastic forming, diffusion connection mold and preparation method of thin-walled large inclination angle parts
  • A kind of superplastic forming, diffusion connection mold and preparation method of thin-walled large inclination angle parts

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Embodiment 1

[0053] like Figure 1-7 As shown, this embodiment provides a mold for superplastic forming and diffusion joining of thin-walled and large-curvature parts, the mold includes an upper mold 1 and a lower mold 2, and the mold between the upper mold 1 and the lower mold 2 The surface is adapted to the shape of the inner and outer surfaces of the part 100; a matching groove 6 is arranged circumferentially in the area of ​​the sealing profile 9 of the lower mold 2, and a first sealing rib 7 is arranged in the matching groove 6, and the first sealing The ribs 7 are circumferentially arranged in the matching groove 6;

[0054] It also includes an auxiliary sealing plate 5, the auxiliary sealing plate 5 is a hollow structure, the auxiliary sealing plate 5 is arranged to cover the matching groove 6, and the thickness of the auxiliary sealing plate 5 is adapted to the depth h of the matching groove 6 ;

[0055] The auxiliary sealing plate 5 is oppositely provided with a positioning piec...

Embodiment 2

[0066] The present invention provides a mold for superplastic forming and diffusion joining of thin-walled and large-curvature parts. The thickness t of t is 1 / 0.31=3.23; the depth h of the matching groove 6 is 3.53. Combined with formula ③, the maximum value of h is 3, so the value of t is 2.7.

Embodiment 3

[0068] A method for preparing thin-walled and large-curvature parts based on the superplastic forming and diffusion-connected molds of Example 1, specifically comprising the following steps:

[0069] Step 1: Pre-forming the sheet material and the auxiliary sealing plate 5, so that the profile of the pre-formed sheet diffusion area is consistent with the profile of the part to be prepared, and the sheet material is compatible with the profile of the auxiliary sealing plate 5; the sheet material Including the upper sheet 3 and the lower sheet 4; the upper sheet 3 is used to fit with the upper die 1 of the mold, and the lower sheet 4 is used to fit with the lower die 2 of the mold;

[0070] Step 2: Drill out the positioning holes 121 on the sheet material and the auxiliary sealing plate 5 respectively according to the spraying template, and place them on the bonding surface between the upper sheet material 3 and the lower sheet material 4 according to the designed position Apply ...

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Abstract

The invention belongs to the technical field of titanium alloy processing, and in particular relates to a superplastic forming, diffusion connection mold and a method for preparing thin-walled and large-inclined parts. The mold is provided with a matching groove in the sealing profile area of ​​the lower mold, and further, a sealing rib is arranged in the matching groove, and under the action of the clamping pressure, the lower sheet material of the parts close to the sealing profile is squeezed into the sealing cavity In the cavity, part of the material in the lower sheet is strongly squeezed by the sharp corners of the sealing cavity, forming a beneficial seal, which further improves the sealing performance of the mold; The sealing effect between the mold and the blank is improved. It does not change the mold profile of the effective area of ​​the part, but also increases the allowable design height of the sealing rib, which solves the problem of poor sealing due to the low sealing rib set in the thin-walled part forming mold.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy processing, and in particular relates to a superplastic forming and diffusion connecting mold, in particular to a superplastic forming, diffusion connecting mold and a method for preparing thin-walled and large-inclined parts. Background technique [0002] Superplastic forming and diffusion joining of titanium alloys are combined processes that simultaneously complete diffusion joining and superplastic forming during the heating process. This process can be used to manufacture multi-layer hollow structures with complex shape surfaces and reinforced inner ribs, and parts manufactured by traditional manufacturing processes. Compared with this process, it has the advantages of light structure, good integrity and high quality, which greatly improves the design freedom and structural efficiency of components, and has been widely used in aviation and aerospace fields. [0003] Titanium alloy supe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K20/02B23K20/26
CPCB23K20/026B23K20/26
Inventor 任广义王晓康江开林王高明张毅王强卢旭阳张志洪
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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