The production of hydrogen 15CrMo steel in Wuyang steel works

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Hydrogen 15CrMo (H) containing WYJ testing, heat treatment, is more than or equal to -10 DEG C im

Hydrogen 15CrMoR, 15CrMoR (H) technical conditions of steel plate production

1 the use of range from Wuyang steel quality management department

The technical conditions applicable to the medium temperature pressure vesselpressure components with less than 150mm thickness of the steel plate.

2 normative references GB713-2008

In 3 dimensions, shape, weight and permissible deviations

3.1 steel plate size, shape and tolerances shall comply with the provisions of GB/T709. 3.2 thickness deviation according to B class or the C GB/T709 class in the contract execution, Naka A.

3.3 plate theoretical weight delivery, theoretical weight the maximum thickness ofsteel plate thickness is permitted and the minimum thickness of the arithmetic mean value. The density of steel 7.85g/ cm 3

The chemical composition of steel requirements, shall be in accordance with the provisions of table 1. Table 1 chemical composition of Wt% components

C Si Mn P  Analysis of the S Max Cr Mo melting

0.12~ ~ ~ ~ ~ ~ 0.18 0.15 0.40 0.40 0.70 0.010   0.010

Analysis of 0.8 ~ 1.2 0.45 ~ 0.60 of the finished product

0.10~ ~ 0.20    0.13 ~ ~ 0.43    0.37 ~ ~ 0.73   0.012   0.010    0.75 ~ ~ 1.25    0.43 ~ ~ 0.62

Analysis of Ni Cu Sb* Sn* component of As* Max [H]* melting

Analysis of 0.20 and 0.20 is less than or equal to 0.003 is less than or equal to 0.015 and 0.016 2ppm products

0.20   0.20  0.003   0.015   0.016

Less than or equal to 2ppm

Note: (1) melting analysis should be per furnace (tank), sampling, analysis of products (including the X coefficient) according to Zhang sample delivery. (2) with "*" the element record analysis results. [H] under the premise of ensuring meltinganalysis, but not for the product analysis. Methods: 4.2 smelting by electric furnace+ refining outside the furnace, and through smelting process vacuum degassing.The plates shall be fine grain steel. 4.3 delivery state: steel plate to normalizing + tempering (allows accelerated cooling) delivery. 4.4 mechanical properties, shallcomply with the provisions of table 2. Table 2 project numerical unit room temperature tensile Rm

Thickness is less than or equal to 100mm 450~~590 MPa

>100~150mm 440~~580 room temperature tensile Rp0.2 less than 100mm thickness greater than 295 MPa

>100~150mm

255

Methods: using electric furnace smelting furnace refining, and through + vacuum degassing of the smelting process. The plates shall be fine grain steel. 4.3 delivery state: steel plate to normalizing + tempering (allows accelerated cooling) delivery.



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