| 铸态薄壁中小件高强韧球铁的研制 |
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| 引用本文： | 李蒙.铸态薄壁中小件高强韧球铁的研制[J].热加工工艺,2010,39(7). |
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| 作者姓名： | 李蒙 |
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| 作者单位： | 焦作大学机电工程学院,河南,焦作,454003 |
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| 摘 要： | 为稳定生产铸态薄壁中小件高强韧球铁,采取了以下技术措施:①合理选用化学成分;②采用冲天炉与电炉双联熔炼工艺,进行两次脱硫获得高温、低氧化、低硫的优质铁液;③使用盖包法球化处理工艺,以获得较高的球化率;④选用低稀土球化剂FeSiMg8RE3;⑤用含Sb、Ba的多元微量复合孕育剂进行孕育处理,以获得恰当的珠光体和铁素体比例。
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| 关 键 词： | 铸态球铁 双联熔炼 盖包法处理 |
Development of Small and Medium-sized Pieces of As-cast Thin-walled High-strength Ductile Iron |
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| LI Meng.Development of Small and Medium-sized Pieces of As-cast Thin-walled High-strength Ductile Iron[J].Hot Working Technology,2010,39(7). |
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| Authors: | LI Meng |
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| Affiliation: | LI Meng(College of Mechanical , Electronical Engineering,Jiaozuo University,Jiaozuo 454003,China) |
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| Abstract: | In order to increase high strength and toughness of as-cast ductile iron,the following measures were tried:①
selecting rational chemical composition;②adopting the double smelting technology of the cupola and electric furnace,
carrying out the two times desulphufization to obtain low sulphur and low oxide liquid iron with high temperature;③using
ttmdish-cover nodulizing process to obtain higher spheroidization rate;④choosing low rare earth nodulizer FeSiMg8RE3;⑤
adopting the rational inoculation technology with Sb,Ba elements to obtain right rate of pearlite and ferrite. |
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| Keywords: | as-cast ductile iron double smelting tundish-cover nodulizing process |
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