摘要
分别研究了正火空冷和正火水冷加回火对压力容器用封头厚板SA-516 Gr70力学性能的影响。结果表明:正火水冷加回火后抗拉强度更高,冲击性能更好。其中890℃正火水冷加650℃回火2 h后综合力学性能最好,在经过620℃模拟焊后热处理9 h后仍保持良好的强度和冲击性能。
The effects of two heat treatment processes(normal with air cooling and normal with water cooling plus temper) to thick plate SA-516 Gr70 used for the heat in pressure vessel were studied respectively. It was shown that the material after normalized with water cooling plus tempered water cooling has both higher ultimate strength and impact toughness. It will have the best properties when being from 890 ℃ normalized with water cooling and tempered in 650 ℃, and its good ultimate strength and impact toughness will be kept after 9 hours of simulated post weld heat treatment in 620 ℃.
出处
《化工设备与管道》
CAS
2017年第4期14-16,共3页
Process Equipment & Piping
关键词
封头
正火水冷
模拟焊后热处理
冲击功
head
normal with water cooling
simulated post weld heat treatment
impact toughness
