首页|A novel approach of jet polishing for interior surface of small-grooved components using three developed setups

A novel approach of jet polishing for interior surface of small-grooved components using three developed setups

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It is a challenge to polish the interior surface of an additively manufactured component with complex structures and groove sizes less than 1 mm.Traditional polishing methods are disabled to polish the component,meanwhile keeping the structure intact.To overcome this challenge,small-grooved components made of aluminum alloy with sizes less than 1 mm were fabricated by a custom-made printer.A novel approach to multi-phase jet(MPJ)polishing is proposed,utilizing a self-developed polisher that incorporates solid,liquid,and gas phases.In contrast,abrasive air jet(AAJ)polishing is recommended,employing a customized polisher that combines solid and gas phases.After jet polishing,surface roughness(Sa)on the interior surface of grooves decreases from pristine 8.596 μm to 0.701 μm and 0.336 μm via AAJ polishing and MPJ polishing,respectively,and Sa reduces 92％and 96％,correspondingly.Furthermore,a formula defining the relationship between linear energy density and unit defect volume has been developed.The optimized parameters in additive manufacturing are that linear energy density varies from 0.135 J mm-1 to 0.22 J mm-1.The unit area defect volume achieved via the optimized parameters decreases to 1/12 of that achieved via non-optimized ones.Computational fluid dynamics simulation results reveal that material is removed by shear stress,and the alumina abrasives experience multiple collisions with the defects on the heat pipe groove,resulting in uniform material removal.This is in good agreement with the experimental results.The novel proposed setups,approach,and findings provide new insights into manufacturing complex-structured components,polishing the small-grooved structure,and keeping it unbroken.

abrasive air jet polishingmulti-phase jet polishinginterior curved surfacesmall-grooved componentaluminum alloy

Qinming Gu、Zhenyu Zhang、Hongxiu Zhou、Jiaxin Yu、Dong Wang、Junyuan Feng、Chunjing Shi、Jianjun Yang、Junfeng Qi

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State Key Laboratory of High-performance Precision Manufacturing,Dalian University of Technology,Dalian 116024,People's Republic of China

School of Energy and Power Engineering,Dalian University of Technology,Dalian 116024,People's Republic of China

Key Laboratory of Testing Technology for Manufacturing Process,Ministry of Education,Southwest University of Science and Technology,Mianyang 621010,People's Republic of China

Beijing Spacecraft Manufacturing Co.,Ltd,China Academy of Space Technology,Beijing 100094,People's Republic of China

School of Mechanical Engineering,Hangzhou Dianzi University,Hangzhou,Zhejiang,People's Republic of China

Facility Design and Instrumentation Institute,China Aerodynamics Research and Development Center(CARDC),Mianyang 621000,People's Republic of China

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National Key Research and Development Program of ChinaYoung Scientists Fund of the National Natural Science Foundation of ChinaChangjiang Scholars Program of the Chinese Ministry of Education

2018YFA070340052205447

2024

10.1088/2631-7990/ad1bba

极端制造(英文)

极端制造(英文)

CSTPCDEI
ISSN：
年,卷(期)：2024.6(2)