Resource-saving austenitic heat-resistant steel and preparation method thereof
An austenitic heat-resistant steel and resource-saving technology, applied in the field of austenitic heat-resistant steel, can solve the problems of difficulty in producing stainless steel products and high production costs, achieve excellent oxidation resistance, simple production process, and reduce production cost effect
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[0044] A method for preparing resource-saving austenitic heat-resistant steel, the preparation process is as follows figure 2 As shown, including the following steps:
[0045] 1) Weigh according to the above composition ratio, and smelt molten steel with good ingredients that meet the requirements through a two-step method (electric furnace and GOR furnace);
[0046] 2) Pour the molten steel into the baked ladle, fine-tune the composition at the refining station to ensure that the composition satisfies 1.3≤(Creq / Nieq)≤1.8. After soft stirring with bottom blowing argon, it is cast into a slab by continuous casting. Ensure the surface quality of the final product, and grind away the surface defects of the slab produced during the continuous casting process;
[0047] 3) Heating the continuous casting slab in the heating furnace, heating the slab according to the heating rate of 1~1.5mm / min, and the drawing temperature is 1230±15℃;
[0048] 4) The heated slab is rolled to the target thic...
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