为解决由机械振动产生的超声波无法在高温环境中成功应用的难题,提出了利用静磁场和交流电流、静磁场和交流磁场的相互作用分别在金属液内直接生成高强度电磁超声波的方法,运用超声波压力传感器对用这两种方法在金属液内生成的电磁超声波的强度进行了测量.研究表明:电磁超声波的强度与所施加的高频电磁力的强度成正比,频率与电磁力的频率相同;实验结果和理论解析结果基本一致;利用高频电磁力的局部作用在金属液全场范围内生成的电磁超声波可以在金属精炼及凝固过程中获得广泛应用.
参考文献
[1] | ASAI S.Recent development and prospect of electromagnetic processing of materials[J].Science and technology of Advanced Materials,2000(01):191-200. |
[2] | Kawashima K;NAKAMORI Y;MUROTA S et al.On-line non-destructive measurement of solidification shell thickness of continuous casting steel slabs[J].Tetsu To Hagane-Journal of The Iron and Steel Institute of Japan,1981,67(07):1515-1522. |
[3] | Yoshida T;ATSUMI T;OHASHI W et al.On-line measurement of solidification shell thickness and estimation of crater-end shape of CC-slabs by electromagnetic ultrasonic method[J].Tetsu To Hagane-Journal of the Iron and Steel Institute of Japan,1984,70(09):1123-1130. |
[4] | Iwai K;ASAI S;Wang Q .Generation of compression waves in a liquid metal using an electromagnetic field[J].CAMP-ISIJ,1999,12(01):45-48. |
[5] | AMANO S;IWAI K;ASAI S .Non-contact generation of compression waves in a liquid metal by imposing a high frequency electromagnetic field[J].ISIJ International,1997,37(10):962-960. |
[6] | ABRAMOV P.Ultrasound in Liquid and Solid Metals[M].Florida:CRC Press Int,1994 |
[7] | BURGOYNE J W.Advances in superconducting magnets for materials processing[A].Nagoya:ISIJ,2000:618-623. |
[8] | ASAI S .Preface to the special issue of materials science and engineering in high magnetic field[J].Journal of the Japan Institute of Metals,1997,61(12):1271-1275. |
[9] | 王强;岩井一彦 .Generation of compression waves in a molten metal by simultaneous imposition of static and alternating magnetic fields[J].材料とプロセス,1999(4):850-0. |
[10] | Wang Q. .Generation of compression waves in a liquid metal by simultaneous imposition of static magnetic field and high frequency electric current[J].材料とプロセス,2000(1):150-0. |
[11] | BOJAREVICS V;FREIBERGS J A;SHILORA E I.Electrically induced vortical flows[M].London:Kluwer Academic Publishers,1988 |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%