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http://dx.doi.org/10.5762/KAIS.2020.21.6.482

Development of Mold for Coupling Parts for Drum Washing Machine  

Park, Jong-Nam (Department of Mechanical Engineering, Chosun College of Science & Technology)
Noh, Seung-Hee (Department of Mechanical Engineering, Chosun College of Science & Technology)
Lee, Dong-Gil (NCT Co., Ltd.)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.21, no.6, 2020 , pp. 482-489 More about this Journal
Abstract
This study conducted a prototype development and evaluation by performing die-casting mold design, mold manufacturing, and injection condition optimization based on flow and solidification analysis to meet the needs of the coupling parts produced by die casting. Through flow analysis, the injection conditions suitable for 100% filling in the cavity were found to be a molten metal temperature of 670 ℃, injection speed of 1.164 m/s, and filling pressure of 6.324~18.77 MPa. In addition, solidification close to 100 % occurred in all four cavities when the solidification rate was 69.47 %. A defect inspection on the surface and inside the product revealed defects, such as poor molding and pores. In addition, the dimensions of the injected product were within the target tolerance and showed good results. Through the feedback of the results of flow and solidification analysis, it was possible to optimize the mold design, and the injection optimization conditions were confirmed to be a total cycle time of approximately 6.5 seconds. Good quality carrier parts with an average surface hardness of approximately 45 mm from the gate measured at 97.48(Hv) could be produced.
Keywords
Coupler; Die Casting; Flow and Solidification Analysis; Vickers Hardness; Defect Inspection;
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