Production method for improving hydrogen-induced crack resistance of steel plate
A technology of anti-hydrogen-induced cracking and production method, applied in the field of metal smelting process, can solve problems such as metal cracking and pitting corrosion, and achieve the effect of reducing center segregation, reducing alloy cost and good toughness
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Embodiment example 1
[0020] This embodiment provides a production method for improving the steel plate's resistance to hydrogen-induced cracking. The steel composition is C 0.038%, Si 0.22%, Mn 0.53%, P 0.010%, S 0.002%, Nb 0.005%, and Ti 0.017% by weight percentage , Mo 0.01%, Cr 4.06%, Ni 0.10%, Al 0.041%, V 0.007%, the balance is Fe and impurities; the rolling process adopts the conventional rolling process, the austenitizing temperature is 1190 ℃ ~ 1215 ℃, the final The rolling temperature is 825-850°C; followed by air cooling.
Embodiment example 2
[0022] This embodiment provides a production method for improving steel plate resistance to hydrogen-induced cracking. The steel composition is C 0.043%, Si 0.23%, Mn 0.49%, P 0.010%, S 0.003%, Nb 0.003%, and Ti 0.019% by weight percentage , Mo 0.01%, Cr 3.89%, Ni 0.15%, Al 0.041%, V 0.006%, the balance is Fe and impurities; the rolling process adopts the conventional rolling process, the austenitizing temperature is 1200 ℃ ~ 1220 ℃, the final The rolling temperature is 855-870°C; followed by air cooling.
[0023] figure 1 , 2 Both are examples of steel plates obtained under a metallographic microscope typical structure morphology, uniform structure. Observe carefully figure 2 , it can be found that there is no obvious island structure on the matrix, which improves the H resistance of the steel plate. 2 S corrosion performance.
[0024] In this example, its composition is shown in Table 1 by weight percentage, and its resistance to hydrogen-induced cracking is shown in T...
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