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Numerical simulation and experimental study on radial squeezing forming of ring with inner grid ribs

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Abstract

The ring with inner grid ribs (RWIGR) is a key mechanical part. Because of its light structure, high strength, high stiffness, and high carrying capacity, it is widely used in aerospace, special transporting equipment, and petrochemical and nuclear energy industries. Currently, the manufacturing of complex grid ribs mainly adopts cutting methods, which has low material utilization rate and low processing efficiency. Therefore, this paper proposes a novel forming method of radial constraining based on the current technical problem of the difficulty in integral forming of such RWIGR. That is, on the basis of the cylindrical ring rolling process, the continuous partial radial constraining squeezing process (CPRCSP) is adopted, so that the RWIGR can be integrally formed. The paper mainly does the following research work: (1) the process principle of the radial constraining squeezing forming is expounded, and the design method of squeezing molds is proposed. In addition, the squeezing deformation process of RWIGR is simulated and analyzed by the ABAQUS software. (2) Through the FE simulation results, the flow law and strain distribution of metal in the CPRCSP of RWIGR are analyzed. (3) The squeezing forming process of RWIGR is simulated under different squeezing process parameters, and the effects of different squeezing process parameters on RWIGR forming are revealed. (4) The experiment of CPRCSP is designed and implemented, which fully verifies the feasibility of the forming process.

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Data availability

The datasets used or analyzed during the current study are available from the corresponding author on reasonable request.

Abbreviations

RWIGR :

Ring with inner grid ribs

CPRCSP :

Continuous partial radial constraining squeezing process

R :

Outer radius of ring blank

r :

Inner radius of ring blank

H :

Height of ring blank

r c :

Inner radius of constraining mold

R c :

Outer radius of constraining mold

L c :

Length of constraining mold

R m :

Radius of working surface of mandrel

H m :

Height of working surface of mandrel

B m :

Width of mandrel

R mf :

Radius of end face of mandrel

H mf :

Total height of mandrel

α :

Angle of the side of mandrel

H g :

Height of ribs

B g :

Width of ribs

R g :

Fillet radius of ribs opening

v 1 :

Feeding speed of mandrel

ω 1 :

Rotation speed of constraining mold

t :

Feeding time of mandrel in one squeezing

γ :

Angle between the constraining roll and the main roll

θ :

Rotation angle of constraining mold

δ :

Squeezing overlap angle of mandrel

U :

Feeding displacement of mandrel

ΔS :

Assembly distance between ring blank and mandrel

V g :

Volume of RWIGR

έ :

Strain rate

R 0 :

Universal gas constant

T :

Absolute temperature

Q :

Apparent activation energy for hot deformation

σ :

Flow stress

A, β, and n :

Material constants, respectively

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Funding

This research work is supported by the National Key Research and Development Project (2019YFB1704500), the National Natural Science Foundation of China (No. 51805391), the Innovative Research Team Development Program of Ministry of Education of China (IRT_17R83), and the Fundamental Research Funds for the Central Universities (WUT: 2019IVB021), 111 Project (B17034).

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Contributions

Jiadong Deng proposes the combined forming method of rolling and extrusion for manufacturing RWIGR. Rongwen Wu writes the manuscript of the paper and participated in process design and a small number of simulations. Jiadong Deng and Dongsheng Qian provide the guidance of experimental implementation and provide correction schemes for process mold design. Yuanbo Wu mainly undertakes the tasks of the FE simulation and experiment implementation process, and organizes the relevant data.

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Correspondence to Dongsheng Qian.

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Deng, J., Wu, R., Qian, D. et al. Numerical simulation and experimental study on radial squeezing forming of ring with inner grid ribs. Int J Adv Manuf Technol 120, 8153–8167 (2022). https://doi.org/10.1007/s00170-022-09149-5

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