High tempering parameter SR embrittlement resistant cryogenic nickel steel and manufacture method thereof
A manufacturing method and parameter technology, which is applied in low-temperature nickel steel and its manufacture, manufacturing materials for marine low-temperature storage tanks, LPG low-temperature storage tanks, low-temperature nickel steel fields, and can solve high manufacturing costs, large fluctuations, long steel plate manufacturing cycles, etc. question
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[0082] The present invention will be further described below in conjunction with the embodiments and accompanying drawings.
[0083] The manufacturing process of the embodiment is: TDS molten iron deep desulfurization → converter smelting → LF → RH (feeding Si-Ca wire) → continuous casting (using light reduction process) → slab off-line finishing → slab cut to length → Heating → controlled rolling (TMR) → weakly accelerated cooling (air cooling) → slow cooling of steel plate stack / pit slow cooling → AUT / MUT → trimming of steel plate, cutting head and tail → rough shot blasting to remove scale on the surface of steel plate → normalizing +Tempering heat treatment (N+T)→sampling and performance testing→cutting steel plates to length→surface quality and appearance dimensions, marking and testing→delivery.
[0084] The ingredient composition of the embodiment of the present invention shown in Table 1. Table 2 and Table 3 are the manufacturing process of the embodiment of the prese...
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