| 过滤对铸态铁素体球墨铸铁组织与性能的影响 |
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| 引用本文： | 武宏强,梁工英.过滤对铸态铁素体球墨铸铁组织与性能的影响[J].西安交通大学学报,1993,27(4):39-45. |
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| 作者姓名： | 武宏强 梁工英 |
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| 作者单位： | 西安交通大学机械工程系
(武宏强，梁工英)，西安交通大学机械工程系(陆文华) |
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| 摘 要： | 通过使用三种过滤器研究过滤对铸态铁素体基体球墨铸铁金相组织和机械性能的影响,发现铁液经过过滤:可使球墨铸铁的石墨球细化且圆整度提高,珠光体数量减少;抗拉强度基本不变而延伸率与常温和低温下的冲击值显著改善,延伸率疲劳比也提高.在不同的过滤器中,过滤效果越好,球墨铸铢的塑性与韧性提高越明显.泡沫陶瓷过滤器效果最佳;挤压成形网格式过滤器次之;芯形过滤器效果较差.
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| 关 键 词： | 过滤 球墨铸铁 铸态组织 铁素体 |
EFFECT OF FILTRATION ON THE MICROSTRUCTURE AND PROPERTIES OF AS-CAST FERRITIC NODULAR IRON |
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| Wu Hongqiang Liang Gongying Lu Wenhua.EFFECT OF FILTRATION ON THE MICROSTRUCTURE AND PROPERTIES OF AS-CAST FERRITIC NODULAR IRON[J].Journal of Xi'an Jiaotong University,1993,27(4):39-45. |
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| Authors: | Wu Hongqiang Liang Gongying Lu Wenhua |
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| Institution: | Department of Mechanical Engineering |
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| Abstract: | Three kinds of filters were used in the production of as-cast ferritic nodular iron specimens. The authors investigated the differences of microstructure and mechanical properties between filted and unfilted specimens. The results showed that after filtration the graphite nodules get finer and more regular, the pearlite percentage reduced; and the elongation fatigue ratio and impact values at different temperatures were significantly improved without obvious change in tensile strength. The more effective the filter was, the higher the plasticity and toughness of iron was. The ceramic foam filter was better than the extruded cellular filter while the sieve core had a poor filtration effect. |
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| Keywords: | filtration nodular iron cast structure properties |
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