전자빔을 이용한 미세 홀 가공 시 전자빔 조사량 변화에 따른 용융 깊이 특성 연구

Translated title of the contribution: Melting depth characteristics according to electron beam dose for electron beam micro-hole drilling

Joon Goo Kang, Byung Kwon Min, Eun Goo Kang

Research output: Contribution to journalArticlepeer-review

Abstract

E-Beam micro-hole drilling features high productivity of 2,000 holes per second and a high aspect ratio of 10 (depth/ diameter). It can be used for the fabrication of nozzles and filters that require several holes. The hole-formation mechanism comprises 1) melting the sample by the energy exchange of e-beam and 2) removing the molten sample by the explosion of the backing material. Accordingly, hole-formation mechanism studies have focused on the effectiveness of backing material and the workpiece’s melting characteristic. This study investigated the melting depth characteristics depending on the beam current and exposure time that determines the E-Beam dose. The experiments were conducted without using the backing materials with an aim to investigate the melting characteristic of the workpiece itself. The results showed that the increase in the exposure current led to an improvement in the melting depth. The results were verified based on the comparison with the results of the process involving the backing material.

Translated title of the contributionMelting depth characteristics according to electron beam dose for electron beam micro-hole drilling
Original languageKorean
Pages (from-to)169-176
Number of pages8
JournalJournal of the Korean Society for Precision Engineering
Volume38
Issue number3
DOIs
Publication statusPublished - 2021 Mar

Bibliographical note

Publisher Copyright:
Copyright © The Korean Society for Precision Engineering

All Science Journal Classification (ASJC) codes

  • Safety, Risk, Reliability and Quality
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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