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系统地研究了等温淬火对灰铸铁组织和性能的影响，并确定了其最佳的等温淬火工艺规范。结果表明：多温湿度是影响灰铸铁组织和性能的关键因素。
The effects of austempering on the microstructure and properties of gray cast iron were systematically studied and the best isothermal quenching process specification was determined. The results show that: the temperature and humidity are the key factors affecting the microstructure and properties of gray cast iron.