• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal Cast Metals Research >Shrinkage evaluation in ductile iron as influenced by mould media and inoculant type
【24h】

Shrinkage evaluation in ductile iron as influenced by mould media and inoculant type

机译：铸模介质和孕育剂类型对球墨铸铁收缩率的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The present work was undertaken in hypereutectic ductile irons, to simultaneously study cooling curves, specimen contraction curves, microstructures and shrinkage tendencies as a function of inoculant selection and mould rigidity. Specific equipment was developed for simultaneous recording of cooling and contraction curves. The highest level of both concentrated and total shrinkage was recorded on the green sand mould system, where a much higher level of the initial eutectic expansion was observed, as compared to furan resin moulds. It was found that the Ca,Ce,S, O-FeSi inoculation gives the highest nodule count and a unique wide distribution of nodules sizes (large and small size nodules, in a peculiar ratio), as well as lower tendency to shrinkage formation. Also, the strongest graphitising effect before the start of eutectic solidification and more prolonged graphitising throughout the end of eutectic freezing characterise were observed with this complex inoculant system in addition to its peculiar action on minimising the shrinkage tendency of ductile irons.
机译：目前的工作是在过共晶球墨铸铁中进行的，以同时研究冷却曲线，试样收缩曲线，微观结构和收缩趋势，这是孕育剂选择和模具刚度的函数。开发了用于同时记录冷却和收缩曲线的专用设备。在生砂模具系统上记录了最高的集中收缩率和总收缩率，与呋喃树脂模具相比，该系统观察到的初始共晶膨胀水平高得多。发现Ca，Ce，S，O-FeSi接种可提供最高的结核数量和独特的结核大小分布（大和小结核，以特殊比例），以及较低的皱缩形成趋势。而且，除了这种独特的作用，它能最大程度地降低球墨铸铁的收缩趋势外，还观察到了在共晶凝固开始之前最强的石墨化作用以及在共晶凝固结束时出现的更长时间的石墨化现象。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号