防护层对爆炸焊接质量的影响
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摘要
为了研究防护层在炸药爆轰过程中对复板表面的保护作用,依据实验数据,分析了复板在焊接完成后的表面平整度、是否发生熔融现象以及金属结合界面的波状纹理的变化情况。防护层隔绝高温的炸药爆轰产物对复板侵蚀,同时在爆轰初始阶段对于应力波透过防护层作用在复板上的应力有明显的增强效应。最终确定在爆炸焊接过程中对复板厚度为0.2cm时,在其表面均匀覆盖一层0.05~0.15cm的黄油可以较好地保护复板不受高温的爆轰产物侵蚀。实验过程中,选取不同种类炸药进行了对比实验,发现粉状硝铵炸药更加容易装药和控制爆轰速度,本实验选用硝铵炸药完成。
The effect of the protective layer on the surface of the composite plate during explosive detonation is studied,according to the experimental data,the flatness of the surface of the plate is analyzed,the melting phenomenon,and the changes of metal binding interface of the wavy texture.The explosive detonation products are separated from the flyer plate by the protective layer,and at the initial stage of the detonation,the stress wave has a significant enhancement effect on the composite plate.Finally,in the process of explosive welding,the thickness of the composite plate is 0.2 cm,covering a layer butter of 0.05~0.15 cm on the surface can protect the compound plate from the high temperature detonation products.During the experiment,selecting different types of explosives,it's found that powder ammonium nitrate explosive easier charge and control the detonation velocity,we chooses ammonia dynamite.
The effect of the protective layer on the surface of the composite plate during explosive detonation is studied,according to the experimental data,the flatness of the surface of the plate is analyzed,the melting phenomenon,and the changes of metal binding interface of the wavy texture.The explosive detonation products are separated from the flyer plate by the protective layer,and at the initial stage of the detonation,the stress wave has a significant enhancement effect on the composite plate.Finally,in the process of explosive welding,the thickness of the composite plate is 0.2 cm,covering a layer butter of 0.05~0.15 cm on the surface can protect the compound plate from the high temperature detonation products.During the experiment,selecting different types of explosives,it's found that powder ammonium nitrate explosive easier charge and control the detonation velocity,we chooses ammonia dynamite.
引文
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[4]刘玉存,狄建华,王作山,等.A3钢-黄铜爆炸焊接机理研究[J].华北工学院学报,2003,25(2):94-97.LIU Y C,DI J H,WANG Z S,et al.Study on explosive welding of A3steel brass[J].Journal of North China Institute of Technology,2003,25(2):94-97.
[5]王飞,王耀华,王伟策.爆炸焊接合理装药厚度计算方法[J].解放军理工大学学报(自然科学版),2001,2(1):74-77.WANG F,WANG Y H,WANG W C.Calculation method of reasonable charge thickness for explosive welding[J].Journal of PLA University of Science and Technology(Natural Science Edition),2001,2(1):74-77.
[6]刘丽梅,杨林,夏建才.膨化硝铵炸药爆温的理论计算分析[J].爆破,2011,28(3):97-100.LIU L M,YANG L,XIA J C.The calculation and analysis of the explosion temperature of expanded ammonium nitrate explosive theory[J].Blasting,2011,28(3):97-100.
[7]谢飞鸿.爆炸焊接动力学及其计算方法[M].北京:科学出版社,2014:11-13.XIE F H.Dynamics and calculation method of explosive welding[M].Beijing Science Press,2014:11-13.
[8]王全柱,邓光平,侯发臣.AZ31/7A52复合材料爆炸焊接工艺研究[J].材料开发与应用,2011,33(1):29-33.WANG Q Z,DENG G P,HOU F C.AZ31/7A52Study on explosive welding of composite materials[J].Development and Application of Materials,2011,33(1):29-33.
[9]]LOUREIRO A,MENDESJ B R,LEALI G R.Effect of explosive mixture on quality of explosive welds of copper to aluminium[J].Materials&Design,2016,95:256-267.
[10]王飞,顾月兵,陆明.爆炸焊接生成波状界面的数值模拟[J].解放军理工大学学报(自然科学版),2004,5(2):64-68.WANG F,GU Y B,LU M.Numerical simulation of explosive welding to generate wavy interface[J].Journal of PLA University of Science and Technology(Natural Science Edition)2004,5(2):64-68.
[11]曲桂梅,夏金民,汪宏祥.爆炸焊接用低爆速乳化炸药研究[J].工程爆破,2016,20(1):42-45.QU G M,XIA J M,WANG H X.Study on low detonation velocity emulsion explosive for explosive welding[J].Engineering Blasting,2016,20(1):42-45.