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风电涡轮机用 QT400-18AL 球墨铸铁的研制
Development of QT400-18AL Nodular Cast Iron for Wind Turbine
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- DOI:
- 作者:
- 李肖霞，赵登利，马永东
LI Xiaoxia, ZHAO Dengli, MA Yongdong
- 作者单位:
- 山东中车风电有限公司，山东 济南 250022
Crrc Wind Power(Shang Dong ） Co., Ltd., Jinan 250022, China
- 关键词:
- 风电机组；低温型球铁； QT400-18AL
wind turbine; low temperature; QT400-18AL
- 摘要:
- 通过理论分析并结合实际生产经验，确定了 QT400-18AL 的化学成分。 采用低稀土硅铁镁合金球化剂冲入
法球化处理；采用钡硅铁孕育剂，通过炉前孕育和瞬时孕育相结合的方式进行孕育处理。 结果表明，获得了可适用于
-40 ℃ 的低温型 QT400-18AL ，其力学性能和金相组织均满足技术要求。
The chemical composition of QT400-18Al was determined by theoretical analysis and practical production
experience. The spheroidizing process of low rare earth ferrosilicon magnesium alloy was adopted. Barium ferrosilicon
inoculant was used to inoculate by means of prefurnace inoculation and instantaneous inoculation. The results show that a
low temperature QT400-18Al suitable for -40 ℃ is obtained, and its mechanical properties and microstructure meet the
technical requirements.