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本文以玻璃模具的选材为前提,在80～950℃温度范围内对Si-Mo耐热铸铁的热疲劳性能进行了测试,着重分析了C、Si、Mo等合金元素、蠕化率和不同石墨形态对材质热疲劳性能的影响。结果表明,C、Si、Mo等元素能提高材质的热疲劳性能;蠕化率越高,其热疲劳性能越差;球状石墨的热疲劳性能最好、蠕虫状石墨的次之,片状石墨的最差。为玻璃模具的选材在热疲劳性方面提供一定依据。
In this paper, the selection of glass mold premise, in the temperature range of 80 ~ 950 ℃ Si-Mo heat-resistant cast iron thermal fatigue properties were tested, focusing on analysis of C, Si, Mo and other alloying elements, Effect of morphology on thermal fatigue properties of materials. The results show that C, Si, Mo and other elements can improve the thermal fatigue properties of the material; the higher the creep rate is, the worse the thermal fatigue property is; the thermal fatigue properties of spheroidal graphite are the best, followed by vermicular graphite, flake graphite The worst For the selection of glass mold in the thermal fatigue to provide some basis.