발간논문

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Vol.38, No.7, 957 ~ 963, 2000
Title
Pesearch Paper / Materials Processing : The Production Technology of Steel Bars by Direct Quenching and Self Tempering
신정호Jung Ho Shin,박상덕Sang Duk Park,이정환Jeong Hwan Lee,이용희Yong Hee Lee,장병록Byoung Lok Jang
Abstract
The purpose of this study is development of direct quenching(DQ) steel bars by direct quenching and self tempering process. So we investigated the production possibility of DQ steel barb by submerged simulation and then put in practice on line DQ rolling by CRCT. The steels by submerged simulation and DQ rolling are obtained microstructures and hardness equivalent to reheat quenching(RQ) steel bars. Also mechanical properties of direct quenched and tempered(DQ&T) bars are equivalent to RQ&T bars. Especially strength-toughness balance of DQ&T bars is superior to RQ&T bars.
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