Production process for 48MnV round steel
A production process, 48mnv technology, applied in the field of metallurgical rolling, can solve the problems of easy leakage of steel slabs, the inability to control it, and the lack of improvement effects
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[0059] Rolling number: B90196301, the cumulative reduction of this rolling number is 5mm during continuous casting, and two passes of large reduction are used during rolling, and the reduction of each pass is 80mm.
Embodiment 2
[0061] Rolling number: B00187901, the cumulative reduction of this rolling number is 5mm during continuous casting, and two passes of large reduction are used during rolling, and the reduction of each pass is 30mm.
[0062] After the sample was heated at (1000±5)°C for 30 minutes, and cooled to room temperature in still air, the data were better than those of the control sample, see Table 4.
[0063] Table 4
[0064] ReL, MPa Rm, MPa A,% Z,% Impact energy AKU2 J Require ≥500 ≥800-920 ≥13 ≥25 ≥32 B90196301 625 / 640 915 / 910 14.0 / 15.0 41.5 / 40.5 45 B00187901 615 / 635 925 / 915 15.5 / 15.5 40.1.0 / 42..0 47 Parallelization 580 / 575 890 / 880 13.5 35 36
[0065] The present invention adopts the continuous casting bloom dynamic light reduction technology during smelting, and adopts the large reduction rolling process during rolling. These two processes are superimposed and used in the production of non-quenched and tempered steel 48...
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