Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
권호 표지

A Study on the Reduction of Segregation in Large 12%Cr Steel Ingot

12%Cr 대형강괴(大型鋼塊)의 편석경감(偏析輕減)에 관(關)한 연구(硏究)

  • Eun, Ok-Ki (Research and Development Laboratory, Korea Heavy Industries and Construction Co., LTD.) ;
  • Chang, Yun-Souk (Research and Development Laboratory, Korea Heavy Industries and Construction Co., LTD.)
  • 은옥기 (한국중공업(주)기술연구소) ;
  • 장윤석 (한국중공업(주)기술연구소)
  • Published : 1990.12.20
Download PDF
⟨ Previous Next ⟩

Abstract

In order to reduce segregation in 12%Cr steel ingots of 60-100tons, numerical analysis by computer was applied to simulate solidification profiles and the profiles of liguid-solid coexisting zone in accordance with the ratios of H(Height) /D(diameter) of 100-ton ingot. The result is that the ratio of L(vertical length) /D(diameter) of liquid-solid coexisting zone was reduced in proportion to the decrease of H/D ratio. With the reduced H/D ratio(0.92) of ingot, the segregation in 60-ton ingot of 12% Cr steel can be much reduced and recovery was also improved by reducing ingot weight.

Keywords