A production method for improving steel plate resistance to hydrogen-induced cracking
A technology of anti-hydrogen-induced cracking and production method is applied in the field of simple production of steel-making process and anti-hydrogen-induced cracking pipeline steel plate, which can solve problems such as pitting corrosion and metal cracking, and achieves reduction of alloy cost, reduction of center segregation and rolling. The effect of simple and easy molding method
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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 composition of the steel grade is C0.038%, Si0.22%, Mn0.53%, P0.010%, S0.002%, and Nb0. 005%, Ti0.017%, Mo0.01%, Cr4.06%, Ni0.10%, Al0.041%, V0.007%, the balance is Fe and impurities; the rolling process adopts conventional rolling process, Austrian The tempering temperature is 1190°C-1215°C, and the final rolling temperature is 825-850°C; then air-cooled.
Embodiment example 2
[0022] This embodiment provides a production method for improving the steel plate's resistance to hydrogen-induced cracking. The composition of the steel grade is C0.043%, Si0.23%, Mn0.49%, P0.010%, S0.003%, and Nb0. 003%, Ti0.019%, Mo0.01%, Cr3.89%, Ni0.15%, Al0.041%, V0.006%, the balance is Fe and impurities; the rolling process adopts conventional rolling process, Austrian The tempering temperature is 1200°C-1220°C, and the final rolling temperature is 855-870°C; then air-cooled.
[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 Table 2.
[0025] The c...
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