Design & Manufacturing

Korean Society of Die & Mold Engineering (한국금형공학회)
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Effects of Injection Conditions on the Weld Line Creation in Injection Molding

사출성형 시 성형조건이 웰드라인의 생성에 미치는 영향

  • Kim, Young-Mo (Undergraduate School of Mechanical Engineering, Pukyong National University) ;
  • Park, Yeong-Min (Undergraduate School of Mechanical Engineering, Pukyong National University) ;
  • Jang, Min-Kyu (Graduate School of Mechanical Engineering, Pukyong National University) ;
  • Jeong, Yeong-Deug (School of Mechanical Engineering, Pukyong National University)
  • 김영모 (부경대학교 기계공학부) ;
  • 박영민 (부경대학교 기계공학부) ;
  • 장민규 (부경대학교 기계공학부 대학원) ;
  • 정영득 (부경대학교 기계공학부)
  • Received : 2012.04.12
  • Accepted : 2012.10.12
  • Published : 2012.12.30
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Abstract

Weld line in injection molded part is one of the defects in injection molding process. Weld line deteriorates not only appearance quality but mechanical property. In this study, ABS and PP were used as experimental materials. And weld line length, depth and strength have been examined according to the injection molding conditions. As the results of experimental studies, weld line length increased as flow rate increases for all materials. And the flow rate is most influenced to the creation of weld line length. Also weld line strength increased, as flow rate and melt temperature increase for all materials. The whole experiment results was similar to CAE analysis results.

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