| 李永刚,董志鹏,张行河.WD615缸盖随流孕育研究[J].汽车零部件,2014,8(9):59-63 |
| WD615缸盖随流孕育研究 |
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| 中文关键词: 随流孕育 灰铸铁 缸盖 |
| 英文关键词: Instant steam inoculation Gray cast iron Cylinder head |
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| 中文摘要: |
| 为解决铸铁材料孕育衰退问题，提高材料性能，某公司引进了随流孕育工艺。但在应用过程中，出现材料强度下降、金相组织无改善等现象，与预期目标相差较大。为此，决定以WD615缸盖为对象进行试验，对随流孕育工艺进行评估。试验结果表明：铁水的碳当量、硫含量、高温静置时间及孕育剂种类等因素是造成随流孕育效果不明显的原因。 |
| 英文摘要: |
| To solve the problem of inoculation fade, and improve material performance, a company introduced the instant steam inoculation process. But in the application process, phenomenon of decline strength and no improvement in microstructure appeared,which had a larger difference with the expected goal. So, taking WD615 cylinder head as test object, instant steam inoculation process was evaluated. The results show that carbon equivalent and sulfur content of the molten iron, high temperature holding time and inoculant type are the reasons which cause stream inoculation effect not obvious. |
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