Journal of Korea Foundry Society (한국주조공학회지)
- Volume 10 Issue 6
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- Pages.520-527
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- 1990
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- 1598-706X(pISSN)
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- 2288-8381(eISSN)
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.)
- Published : 1990.12.20
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.
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