Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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The Production Technology of High-Strength Round Bar by QST Rolling

QST압연법에 의한 고장력봉강 제조기술

  • 신정호 (기아특수강 금속기술연구소 생산기술부) ;
  • 한철호 (기아특수강 금속기술연구소 생산기술부) ;
  • 이종수 (기아특수강 금속기 술연구소 생산기술부) ;
  • 장병록 (기아특수강 금속기술연구소 생산기술부)
  • Published : 1997.03.01
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Abstract

The Quenching and Self Tempering (QST) rolling is treated in terms of an advance process on Controlled Rolling and Cooling Technology (CRCT). In the analysis, the effect of this process is governed by both quenching and finishing conditions in the related with temperature. The objective of the QST model is to simulate the temperature gradient of the stock being rolled in the rolling mill. A comparison of computer simulated and manufactured micro structure as well as mechanical properties shows a good consistency. The micro structure of this high-strength round bar consists of tempered martensite and ferrite + pearlite phases.

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