公开(公告)号：KR100839826B1

公开(公告)日：2008-06-19

申请号：KR1020070024623

申请日：2007-03-13

Applicant: 한국과학기술연구원

Inventor： 이덕영 ,  김기배 ,  유정석 ,  강석원

IPC: G01P3/488

CPC classification number: G01P3/488 ,  B23K1/085 ,  G01R15/202 ,  G02B6/29389

Abstract: An apparatus for measuring a rotating speed of a melt is provided to control fine texture of materials by electromagnetic stirring and to design the materials optimally by clearly checking the rheological property of the material. In an apparatus(1000) for measuring a rotating speed of a melt, an EMS(Electromagnetic Stirring Device)(100) stirs the melt contained in a crucible(50) by applying an electromagnetic field to the crucible. A hall voltage measuring instrument(200) contacts with the melt and measures a hall voltage signal generated from the melt. A frequency detection system(300) measures driving frequency of the EMS. A lock-in unit(400) restores only a signal of a frequency range measured in the frequency detection system, from voltage signals detected by the hall voltage measuring instrument.

Abstract translation: 提供了一种用于测量熔体旋转速度的装置，以通过电磁搅拌来控制材料的细微结构，并通过清楚地检查材料的流变性能来最佳地设计材料。 在用于测量熔体旋转速度的装置（1000）中，EMS（电磁搅拌装置）（100）通过向坩埚施加电磁场来搅拌包含在坩埚（50）中的熔体。 霍尔电压测量仪（200）与熔体接触并测量熔体产生的霍尔电压信号。 频率检测系统（300）测量EMS的驾驶频率。 锁定单元（400）仅从由霍尔电压测量仪检测的电压信号恢复在频率检测系统中测量的频率范围的信号。