发明授权
- 专利标题： Method for treating spheroidal graphite iron and pouring device thereof
- 专利标题（中）： 球墨铸铁及其浇注装置的处理方法
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申请号： US12922091申请日： 2009-03-09
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公开(公告)号： US08419821B2公开(公告)日： 2013-04-16
- 发明人: Yuxin Wang , Juren Liu
- 申请人： Yuxin Wang , Juren Liu
- 代理机构： McDermott Will & Emery LLP
- 优先权： CN200810054604 20080310
- 国际申请： PCT/CN2009/070702 WO 20090309
- 国际公布： WO2009/111973 WO 20090917
- 主分类号： C21B11/10
- IPC分类号： C21B11/10
摘要：
A method for treating spheroidal graphite iron includes the step: pouring molten spheroidal graphite iron into a pouring electrical furnace (1); covering the molten spheroidal graphite iron (5) with alkali slag (6) which is melted at high temperature and rich in alkali earth metal ion, rare earth metal ion, or mixture of them; connecting the molten spheroidal graphite iron (5) with the negative pole of the direct current source by one pole (7); connecting the alkali slag (6) with the positive pole of the direct current source by another pole (4), treating the molten spheroidal graphite iron (5) with the alkali slag (6) which is used as electrolyte. The method can prevent the spheroidized fading velocity of the spheroidal graphite iron. The pouring electrical furnace can be used for treating the molten spheroidal graphite iron.
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