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[1]沈正祥,陈虎,王杜,等.铸造工艺中蒸汽爆炸事故形成机制分析[J].中国安全生产科学技术,2018,14(5):150-154.[doi:10.11731/j.issn.1673-193x.2018.05.022]
　SHEN Zhengxiang,CHEN Hu,WANG Du,et al.Analysis on formation mechanism of steam explosion accident in casting process[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2018,14(5):150-154.[doi:10.11731/j.issn.1673-193x.2018.05.022]
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铸造工艺中蒸汽爆炸事故形成机制分析
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
14
期数:
2018年5期
页码:
150-154
栏目:
职业安全卫生管理与技术
出版日期:
2018-05-31

文章信息/Info

Title:
Analysis on formation mechanism of steam explosion accident in casting process
文章编号:
1673-193X(2018)-05-0150-05
作者:
沈正祥1; 2; 陈虎1; 王杜1; 陈定岳1; 吕中杰2; 黄风雷2
（1.宁波市特种设备检验研究院，浙江 宁波 315048；2.北京理工大学 爆炸科学与技术国家重点实验室，北京 100081）
Author(s):
SHEN Zhengxiang1; 2;  CHEN Hu1;  WANG Du1;  CHEN Dingyue1;  LYU Zhongjie2;  HUANG Fenglei2
(1.Ningbo Special Equipment Inspection & Research Institute, Ningbo Zhejiang 315048, China;2.State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China)
关键词:
铸造; 蒸汽爆炸; 熔融铝液; 冲击波; 过热
Keywords:
casting;  steam explosion;  molten aluminum;  shock wave;  overheat
分类号:
X924.4；O381
DOI:
10.11731/j.issn.1673-193x.2018.05.022
文献标志码:
A
摘要:
为了揭示金属铸造工艺中蒸汽爆炸事故形成原因，建立了大质量熔融铝液遇水自触发爆炸反应模拟装置，研究了铝液-水爆炸体系的温度变化特征和冲击波传播规律，并对产物进行回收分析。结果表明：爆炸反应的触发与铝-水的相对质量比、水温等因素相关；爆炸越剧烈，产物粒径越小；爆炸场的最高温度为520 K，且冲击波超压衰减较快；现有条件下铝液碎化放热形成过热亚稳态水，短时间内快速汽化是爆炸事故发生的主要原因。
Abstract:
In order to reveal the formation reasons of the steam explosion accident in the metal casting process, a simulation equipment for the spontaneous explosion reaction of massive molten aluminum encountering water was established. The change characteritics of temperature and the propagation laws of shock wave for the molten aluminum-water explosion system were studied, and the products were collected and analyzed. The results showed that the triggering of explosion reaction was related to the relative mass ratio of aluminum-water, water temperature and other factors. The more violent the explosion, the smaller the size of the products. The maximum temperature of the explosion field was 520 K, and the attenuation of the shock wave overpressure was faster. Under the existing conditions, the overheating metastable water, which was formed by the fragmentation and heat release of molten aluminum, would vaporize rapidly in a short time was the main reason of the explosion accident.

参考文献/References:

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备注/Memo

备注/Memo:
浙江省质量技术基础建设项目（20180119）
更新日期/Last Update: 2018-06-19