论文部分内容阅读
采用自制的试验机模拟核电厂一回路水质,研究不同温度和应力下控制棒驱动机构(CRDM)钩爪用stellite-6合金的冲击磨损性能。研究结果表明:正常接触条件下,温度对冲击磨损性能的影响较小,合金尺寸变化速率约为1×10~(-8)mm/次,质量变化速率约为2×10~(-6) mg/次;高接触应力下,合金的冲击磨损机制为塑性变形和疲劳剥落;室温、90℃和150℃下,合金尺寸变化速率分别为:1.3×10~(-7) mm/次、4.7×10~(-7) mm/次和5.3×10~(-7) mm/次,质量变化速率分别为7.5×10~(-6) mg/次、4.17×10~(-5) mg/次和4.83×10~(-5) mg/次。
A self-made test machine was used to simulate the water quality of the primary circuit of a nuclear power plant to study the impact wear properties of the stellite-6 alloy for controlling claw driving mechanism (CRDM) claws under different temperature and stress. The results show that under normal contact conditions, the temperature has little effect on the impact and wear properties. The rate of change of the alloy size is about 1 × 10 -8 mm / s, and the mass change rate is about 2 × 10 -6. mg / time; under high contact stress, the impact wear mechanism of the alloy is plastic deformation and fatigue spalling; the rate of change of the size of the alloy at room temperature, 90 ℃ and 150 ℃ are 1.3 × 10 -7 mm / × 10 -7 mm / times and 5.3 × 10 -7 mm / times respectively, and the rate of mass change was 7.5 × 10 -6 mg / time, 4.17 × 10 -5 mg / Times and 4.83 × 10 ~ (-5) mg / time.