Extrusion internal thread of titanium alloy plate: Multi-objective optimization of material flow-induced defects DOI
Miaoyuan Mei, Yongqiang Zhao, Chao Chen

et al.

Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: May 27, 2025

Material flow-induced defects in extrusion internal thread can significantly reduce the bearing capacity and sealing reliability of threaded connections. To address this issue, study focuses on titanium alloy plates (Ti-6Al-4V) analyzes effects optimization variables (bottom hole diameter, chamfering depth, angle) objectives (tooth height rate, upper surface defect height, lower height) using a single-factor method. Based Box-Behnken design response method, regression model between objective is established multi-objective carried out, set optimal parameters are obtained diameter 19.221 mm, depth 1.421 angle 38.252°). The numerical simulation results show that optimized tooth rate 76.51%, with being −0.048 mm −0.026 mm. prediction error less than 5%, indicating good fit. This provides theoretical support for high-precision forming aerospace field.

Language: Английский

Extrusion internal thread of titanium alloy plate: Multi-objective optimization of material flow-induced defects DOI
Miaoyuan Mei, Yongqiang Zhao, Chao Chen

et al.

Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: May 27, 2025

Material flow-induced defects in extrusion internal thread can significantly reduce the bearing capacity and sealing reliability of threaded connections. To address this issue, study focuses on titanium alloy plates (Ti-6Al-4V) analyzes effects optimization variables (bottom hole diameter, chamfering depth, angle) objectives (tooth height rate, upper surface defect height, lower height) using a single-factor method. Based Box-Behnken design response method, regression model between objective is established multi-objective carried out, set optimal parameters are obtained diameter 19.221 mm, depth 1.421 angle 38.252°). The numerical simulation results show that optimized tooth rate 76.51%, with being −0.048 mm −0.026 mm. prediction error less than 5%, indicating good fit. This provides theoretical support for high-precision forming aerospace field.

Language: Английский

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