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Process Optimization of Industrial Solid Freeform Fabrication System

산업용 임의형상제작(Solid Freeform Fabrication)시스템의 공정변수 최적화

  • 곽성조 (한국과학기술원 기계공학) ;
  • 이두용 (한국과학기술원 기계공학)
  • Published : 2008.07.01

Abstract

This paper presents experimental optimization of process parameters for a newly developed SFF(Solid Freeform Fabrication) system. Two critical process parameters, layering thickness and curing period, which have a large effect on the quality of the product, are optimized through experiments. Specimens are produced using layering thicknesses of 60, 80, 100, 120, 140, and $160\;{\mu}m$ and curing periods of 0, 10, 20, and 30 minutes under the same processing conditions, i.e., build-room temperature, feed-room temperature, roller speed, laser power, scan speed, and scan spacing. The specimens are tested to compare and analyze performance indices such as thickness accuracy, flatness, stress-strain characteristics, and porosity. The experimental result indicates that layering thickness of $80{\sim}100\;{\mu}m$ and curing period of $20{\sim}30$ minutes are recommended for the developed industrial SFF system.

Keywords

Solid Freeform Fabrication System;Selective Laser Sintering;Process Control

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