An Advanced Oscillation Mixing Method for Improving the Cooling Uniformity in Quenching
来源期刊：材料热处理学报2004年第5期
论文作者：Koichi Terasaka Satoshi Suda Toshiaki Wakabayashi Hiromitsu Murakami Hideo Yokota Hideki Tsuge Hiroyuki Hoshino
关键词：quenchant; cooling power; distortion;
摘 要：In quenching, the cooling uniformity is most important to diminish distortion occurring on work pieces. As a trial to accomplish uniform cooling, therefore, there exist various mixing methods of a quenchant and the quenchant circulation with an external pump has so far been the well accepted mixing method. However, this study proposes an advanced oscillation mixing method that can improve more the cooling uniformity in quenching. The proposed method includes a stirrer in oscillating motion, so that the simultaneous oscillating and mixing movements of the stirrer are considered to provide effectively the uniform cooling characteristics for the quenchant. In comparison with the case of the circulation pump mixing, the investigation using the oscillation mixing method has demonstrated the following two experimental facts:(1) the short vapor blanket stage caused by the quick breakage of the oil vapor blanket and (2) the reduced variation of the quenching distortion.
Koichi Terasaka1，Satoshi Suda2，Toshiaki Wakabayashi3，Hiromitsu Murakami4，Hideo Yokota5，Hideki Tsuge1，Hiroyuki Hoshino2
(1.Keio Univ., Yokohama, Japan;
2.Nippon Oil Processing CO., LTD, Niigata, Japan;
3.Kagawa Univ., Takamatsu, Japan;
4.Oriental engineering CO., LTD, Tokyo, Japan;
5.Nippon Oil Corp., Yokohama, Japan)
摘要:In quenching, the cooling uniformity is most important to diminish distortion occurring on work pieces. As a trial to accomplish uniform cooling, therefore, there exist various mixing methods of a quenchant and the quenchant circulation with an external pump has so far been the well accepted mixing method. However, this study proposes an advanced oscillation mixing method that can improve more the cooling uniformity in quenching. The proposed method includes a stirrer in oscillating motion, so that the simultaneous oscillating and mixing movements of the stirrer are considered to provide effectively the uniform cooling characteristics for the quenchant. In comparison with the case of the circulation pump mixing, the investigation using the oscillation mixing method has demonstrated the following two experimental facts:(1) the short vapor blanket stage caused by the quick breakage of the oil vapor blanket and (2) the reduced variation of the quenching distortion.
关键词:quenchant; cooling power; distortion;
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