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A Study on the Process Capability Analysis of MIM Product  

Choi, Byung-Ky (조선대학교 기계공학과)
Lee, Dong-Gil (한국생산기술연구원)
Choi, Byung-Hui (조선이공대학 자동차과)
Publication Information
Journal of the Korean Society of Manufacturing Technology Engineers / v.19, no.1, 2010 , pp. 57-64 More about this Journal
Abstract
Metal Injection Molding (MIM) is attractive because it produces consistent, complex-geometry components for high-volume, high-strength, and high-performance applications. Also MIM using in optical communication field, display field, and semi-conductor field is a cost-effective alternative to metal machining or investment casting parts. It offers tremendous single-step parts consolidation potential and design flexibility. The objective of this paper is to study the suitability of design, flow analysis, debinding and sinterin processes, and capability analysis. The suitable injection conditions were 0.5~1.5 second filling time, 11.0~12.5 MPa injection pressure derived from flow analysis. The gravity of the product is measured after debinding an sintering. The maximum and minimum gravity levels are 7.5939 and 7.5097. the average and standard deviation are 7.5579 and 0.0122; when converted into density, the figure stands at 98.154%. According to an analysis of overall capacity, PPM total, which refers to defect per million opportunities(DPMO), stands at 166,066.3 Z.Bench-the sum of defect rates exceeding the actual lowest and highest limits-is 0.97, which translates into the good quality rate of around 88.4% and the sigma level of 2.47.
Keywords
Metal injection molding; Solvent extraction; Thermal debinding; Sintering; Gravity; Density;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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