Electroslag smelting method for TWZ-2 steel
A TWZ-2, electroslag smelting technology, applied in the field of metallurgy to achieve the effect of improving the yield and production efficiency
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[0026] Example: Using the smelting method of the present invention
[0027] (1) Technical parameters
[0028] 1) Mass percentage of slag system: CaF 2 40%, CaO 30%, Al 2 O 3 30%, melting point of slag is 1230℃;
[0029] 2) Melting rate: 0.7 times the diameter of the crystallizer, that is, 480-520kg / h of the 700mm crystallizer diameter; 3) The depth of the electrode inserted into the slag pool is 20-30mm;
[0030] 4) The filling ratio is 0.5.
[0031] (2) Composition after smelting
[0032] After smelting, the pass rate of magnetic permeability reaches 100%. Select two furnaces C and D to sample at the head, 1 / 4, 1 / 2, 3 / 4, and tail to test the key components and permeability. The test results are as follows:
[0033] Sampling location
[0034] It can be seen from the above table that through the newly designed smelting TWZ-2, the nitrogen content of furnace number C is 0.53% on average, and the nitrogen loss is 200ppm; the nitrogen content of furnace number D is 0.526% on average, and...
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