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用铬青铜(QCr0.5)制造的电极零件,其尺寸为φ50×385mm,设计要求淬火时效强化后的硬度为HB100～130。开始我们采用如图1所示的常规工艺,处理后的硬度在HB70以下,没有达到强化的效果。后来,我们将淬火温度提高到1000℃,时效温度提高到480℃。并在480℃进行了不同时间的时效处理试验。试验后得出了如图2所示的时效时间与硬度的关系曲线。时效时间与硬度的关系曲线的得出,为我们以后灵活制定该材料的热
Electrode parts made of chrome bronze (QCr0.5), the size of φ50 × 385mm, the design requirements of the hardness after hardening hardened HB100 ~ 130. At the beginning we used the conventional process shown in Figure 1, the hardness after treatment is below HB70, did not achieve the enhanced effect. Later, we increased the quenching temperature to 1000 ° C and the aging temperature to 480 ° C. And at 480 ℃ for different time aging test. After the test obtained as shown in Figure 2 aging time and hardness curve. Aging time and the relationship between the hardness of the curve derived for our future flexibility in the development of the material heat