Thin gauge high-manganese high-aluminum steel with ultra-fine grain sizes and production method
A technology of ultra-fine grain and production method, which is applied in the production field of high-manganese and high-aluminum steel with ultra-fine grain size and thin specification, and can solve problems such as lack of large-scale production, low strength and strong plastic product, and complex production process. , to achieve the effects of short annealing time, microstructure and improved production efficiency
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[0045] The present invention is described in detail below:
[0046] Table 1 is the composition value list of each embodiment of the present invention and comparative example;
[0047] Table 2 is the list of main process parameters of each embodiment of the present invention and comparative examples;
[0048] Table 3 is the main performance list of each embodiment of the present invention and comparative examples;
[0049] Table 4 is a list of special mold powder parameters for each embodiment and comparative example of the present invention.
[0050] Each embodiment of the present invention is produced according to the following preparation methods:
[0051] 1) Smelting and continuous casting into slabs. During the casting process, the casting speed is controlled at 3.5~5.1m / min, and the thickness of the slabs is controlled at 52~70mm;
[0052] 2) Heating the billet in the tunnel furnace, controlling the heating temperature at 1183~1257°C, and the heating time at 25~41min; ...
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