Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Mechanical Properties of Welded Materials after Plasma Cutting

플라즈마 절단 후 제작도니 용접부의 기계적 특성

  • 신규인 (충북대학교 안전공학과 대학원) ;
  • 김형곤 (충북대학교 정밀기계공학과 대학원) ;
  • 박재학 (충북대학교 안전공학과) ;
  • 김성청 (충북대학교 정밀기계공학과)
  • Published : 1999.09.01
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Abstract

The influence of surface preparation methods after plasma cutting on the quality of weld zone was investigated. For comparison, three types of welded specimens were prepared by machining (WM), plasma cutting with light regrinding (WPG) and without regrinding (WP), by using three kinds of materials, carbon steel (SM45C), stainless steel (STS304) and aluminum alloy (A6061-T6). Nondestructive examination, hardness test, microstructure examination, and fracture toughness test were performed. The results showed that there was no appreciable reduction in hardness or fracture toughness in WP specimens. But a little difference in heat affected zone size was observed.

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