利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN109811262A 一种2.25Cr1Mo0.25V钢大壁厚加氢锻件的制造工艺 有权

一种2.25Cr1Mo0.25V钢大壁厚加氢锻件的制造工艺
摘要：
本发明公开了一种2.25Cr1Mo0.25V钢大壁厚加氢锻件的制造工艺，制造工艺包括：先将预备热处理后的锻件加热至300℃-350℃保温2-6h，再加热至710±10℃保温4-8h，再升温至930℃-960℃保温8-12h，出炉水冷；再将出炉水冷后的锻件加热至300℃-350℃保温2-6h，再加热至690±10℃保温10-14h，出炉空冷，即得到符合要求的大壁厚加氢锻件；其中，2.25Cr1Mo0.25V钢的化学成分按重量百分比计为：C 0.13-0.16%，Si≤0.1%，Mn 0.50-0.60%，P≤0.008%，S≤0.005%，Cr 2.40-2.60%，Mo 0.95-1.04%，V 0.28-0.35%，Ti≤0.03%，B 0.001-0.002%，Nb 0.03-0.05%，Ni 0.15-0.20%，Al 0.02-0.04%，As≤0.007%，Sn≤0.004%，Sb≤0.003%，Cu≤0.08%，Ca≤0.015%，[H]≤0.00015%，[O]≤0.0020%，[N]≤0.008%，余量为Fe及不可避免的杂质。本发明中锻件用2.25Cr1Mo0.25V钢的化学成分配合该制造工艺，使得到的大壁厚加氢锻件的综合性能优良，组织均匀细小。
摘要（英）：

The invention discloses a manufacturing technology of a large-wall-thickness hydrogenated 2.25Cr1Mo0.25V steel forged piece. The manufacturing technology comprises the steps that firstly, a forged piece obtained after pre-heating treatment is heated to 300-350 DEG C, the temperature is kept for 2-6 h, the forged piece is heated to 710+/- 10 DEG C, the temperature is kept for 4-8 h, then the forgedpiece is heated to 930-960 DEG C, the temperature is kept for 8-12 h, and discharging and water cooling are conducted; the forged piece obtained after discharging and water cooling is heated to 300-350 DEG C for 2-6 h, and then the forged piece is heated to 690+/-10 DEG, the temperature is kept for 10-14 h, discharging and air cooling are conducted, and then the large-wall-thickness hydrogenatedforged piece is obtained. The 2.25Cr1Mo0.25V steel comprises, by weight, 0.13-0.16% of C, not larger than 0.1% of Si, 0.50-0.60% of Mn, not larger than 0.008% of P, not larger than 0.005% of S, 2.40- 2.60% of Cr, 0.95-1.04% of Mo, 0.28-0.35% of V, not larger than 0.03% of Ti, 0.001-0. 002% of B, 0.03-0.05% of Nb, 0.15-0.20% of Ni, 0.02-0.04% of Al, not larger than 0.007% of As, not larger than 0.004% of Sn, not larger than 0.003% of Sb, not larger than 0.08% of Cu, not larger than 0.015% of Ca, not larger than 0.00015% of [H], not larger than 0.0020% of [O], not larger than 0.008% of [N], the balance Fe and inevitable impurities. According to the manufacturing technology, the chemical ingredients of the 2.25Cr1Mo0.25V steel are adopted to cooperate with the manufacturing technology, so that the obtained large-wall-thickness hydrogenated forged piece is excellent in comprehensive performance and uniform and fine in structure.

公开/授权文献
0/0