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一、高温工作的铸铁在高温使用铸铁时,有几项性能是重要的。首先应考虑的是高温强度、抗氧化性和尺寸稳定性,但抗热疲劳性能也很重要,因为大多数的高温服役都涉及到或者是热循环,或者是在温度梯度下承受应力的零件。热疲劳性能与许多项的物理性能和机械性能有着复杂的关系。通常,热膨胀系数低,导热性好,强度
First, the high-temperature work of cast iron At high temperatures using cast iron, there are several properties are important. First of all, high temperature strength, oxidation resistance and dimensional stability should be considered, but thermal fatigue resistance is also important as most high temperature service involves either thermal cycling or stress-tolerant components under temperature gradients. Thermal fatigue properties are complicated by the physical and mechanical properties of many items. In general, the thermal expansion coefficient is low, thermal conductivity, strength