发明授权
- 专利标题： Method of crucible-free zone melting a crystalline rod with laterally displaced rod holders
- 专利标题（中）： 无区域熔融方法具有侧向位移夹持器的晶体管
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申请号： US3594132D申请日： 1967-02-27
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公开(公告)号： US3594132A公开(公告)日： 1971-07-20
- 发明人: KELLER WOLFGANG
- 申请人： SIEMENS AG
- 专利权人： Siemens Ag
- 当前专利权人： Siemens Ag
- 优先权： DES0106159 1966-09-28
- 主分类号： C30B13/28
- IPC分类号： C30B13/28 ; B01J17/10
摘要：
METHOD OF CRUCIBLE-FREE ZONE MELTING A CRYSTALLINE ROD WHICH COMPRISES ROTATING A PAIR OF SPACED AND SUBSTANTIALLY VERTICALLY ALIGNED END HOLDERS SUPPORTING A CRYSTALLINE ROD THEREBETWEEN, HEATING THE ROD WITH AN ANNULAR HEATING DEVICE SURROUNDING THE ROD TO A TEMPERATURE AT WHICH A MOLTEN ZONE IS FORMED IN THE ROD DIVIDING THE ROD INTO A SUPPLY ROD PORITION BEING SUPPLIED TO THE MELT IN THE MOLTEN ZONE AND A ROD PORTION RESOLIDIFYING FROM THE MELT, RELATIVELY DISPLACING THE END HOLDERS AND THE HEATING DEVICE IN THE DIRECTION OF THE ROD AXIS AT A GIVEN RELATIVE SPEED SO THAT THE RESOLIDIFYING ROD PORTION HAS A THICKNESS OF PREDETERMINED NOMINAL VALUE, AND LATERALLY DISPLACING THE END HOLDER FOR THE SUPPLY ROD PORTION OUT OF VERTICAL ALIGNMENT WITH THE OTHER END HOLDER.
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