Ultra-low-cost, SR embrittlement-resistant low-temperature nickel steel plate and manufacturing method thereof
A low-cost, steel plate technology, applied in the field of low-temperature nickel steel plate and its manufacturing, can solve the problems of long manufacturing cycle, high manufacturing cost, and poor ability of steel plate to withstand large heat input welding.
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[0072] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0073] Refer to Table 1 for the steel composition of the embodiment of the present invention, Table 2 to Table 4 are the steel manufacturing process of the embodiment of the present invention, Table 5 is the performance of the base metal steel plate of the embodiment of the present invention, and Table 6 is the SR process of the steel plate of the embodiment of the present invention (i.e. simulated welding post heat treatment process) properties of the base metal steel plate.
[0074] According to the technical characteristics of the steel plate of the present invention, the steel plate of the embodiment of the present invention is combined with DL (controlled rolling + delayed direct quenching in the two-phase zone of ferrite / austenite) and subsequent tempering process through a reasonable combination design of alloy elements, namely It can stably prod...
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