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压力容器设备制造厂在对送检的14Cr1MoR钢换热器管板进行复验时,发现其显微组织与常规显微组织存在明显差异,力学性能检测中低温冲击性能(-20℃)逼近下限,与该钢出厂的检验报告结果有较大出入,管板的热处理工艺为910℃×3 h正火+710℃×2 h回火+690℃×20 h模拟焊后热处理,板厚(T)160 mm。由于该钢工作环境处于高温、高压、与
Pressure vessel equipment factory in the inspection of the 14Cr1MoR steel heat exchanger tube plate re-examination, found that the microstructure and conventional microstructure there is a significant difference in the mechanical properties of low-temperature impact resistance test (-20 ℃) to reach the lower limit , And the steel factory inspection results have a greater discrepancy, the heat treatment process for the tube plate 910 ℃ × 3h normalizing +710 ℃ × 2h tempering +690 ℃ × 20h simulated post-weld heat treatment, thickness (T ) 160 mm. As the steel working environment in high temperature, high pressure, and