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Integrally Cored Ceramic Mold Fabricated by Ceramic Stereolithography
Author(s) -
Bae ChangJun,
Halloran John W.
Publication year - 2010
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2010.02568.x
Subject(s) - stereolithography , materials science , ceramic , mold , shrinkage , composite material , green body , sintering , investment casting , integrally closed , casting , shell (structure)
Ceramic stereolithography (SLA) was used to fabricate a ceramic investment casting mold with the integral core within a ceramic mold shell, produced in a single patternless construction from refractory‐grade fused silica. The SLA build material was a photopolymerizable suspension of 60 vol% fused silica dispersed in a monomer solution based on 1,6‐hexanediol diacrylate. The mold had 1047 layers, each 100 μm thick. Green body dimensions before sintering were approximately 0.7% smaller than the design within the plane of the layers, and approximately 0.3% larger than the design perpendicular to the layers. The sintering shrinkage was 10.7±0.2% in both directions.