| 3 | Cooling Curve's Effect on Hardening Behavior of Steel显示文摘Quenching Oils are comprised mostly of mineral oil as major component, but mineral oil alone result in lower cooling performance. Therefore, various additives are formulated as required for each particular case. Cooling curves of mineral oil as determined by JIS method can be divided into three stages, vapor film stage, boiling stage and convection stage. And there are many types of additives used for quenching oil, one effective to shorten vapor film stage and another to shift boiling stage toward lower temperature side. As rapid quenching required temperature range for particular steel varies pending on its shape of CCT curve'1, it is possible to provide higher quench hardening performance using quenching oil formulated of adequate additives. | Kazuto Fukuhara Shigeru Asada Yoshihiro Tomita Syusaku Maeda | 2004 | 材料热处理学报2004，25，5： | 0 |
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