Large-thickness rolled steel plate instead of case one for large-sized ball mill and production method thereof
A production method and ball mill technology, used in metal rolling, metal rolling, temperature control and other directions, can solve the problems of high quality and poor quality of large workpieces, and achieve internal compactness, good strength and toughness matching, and wear resistance. high effect
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Embodiment 1
[0028] The large-thickness rolling replacement cast steel plate for the large ball mill in this embodiment is smelted from the following components by weight percentage: C 0.160%, Si 0.300%, Mn 1.350%, P 0.012%, S 0.003%, Als 0.030% , Nb 0.018%, the rest is Fe and unavoidable impurities. The thickness of the steel plate in this embodiment is 180 mm.
[0029] Large-scale ball mill of the present invention is as follows with the production method of rolling instead cast steel plate with large thickness:
[0030] 1) Smelting: The molten steel containing various elements is first smelted in an electric furnace. The molten steel in the furnace weighs 100~110 tons, and then sent to the LF refining furnace for refining and adjusting the composition. When the temperature of the molten steel reaches 1625 ° C, it is transferred to the vacuum degassing furnace ( VD furnace) vacuum treatment, add 100kg of CaSi block before vacuum, feed Al wire 120m, vacuum degree is not more than 66Pa, a...
Embodiment 2
[0041] The large-thickness rolling replacement cast steel plate for the large-scale ball mill in this embodiment is smelted from the following components by weight percentage: C 0.190%, Si 0.280%, Mn 1.380%, P 0.010%, S 0.003%, Als 0.032% , Nb 0.016%, the rest is Fe and unavoidable impurities. The thickness of the steel plate in this embodiment is 275 mm.
[0042] Large-scale ball mill of the present invention is as follows with the production method of rolling instead cast steel plate with large thickness:
[0043] 1) Smelting: The molten steel containing various elements is first smelted in an electric furnace. The molten steel in the furnace weighs 100~110 tons, and then sent to the LF refining furnace for refining and adjusting the composition. When the temperature of the molten steel reaches 1600 ° C, it is transferred to the vacuum degassing furnace ( VD furnace) vacuum treatment, add 120kg of CaSi block before vacuum, feed Al wire 150m, vacuum degree is not more than 6...
Embodiment 3
[0054] The large-thickness rolling replacement cast steel plate for the large-scale ball mill in this embodiment is smelted from the following components by weight percentage: C 0.180%, Si 0.330%, Mn 1.360%, P 0.014%, S 0.003%, Als 0.045% , Nb 0.020%, the rest is Fe and unavoidable impurities. The steel plate thickness of this embodiment is 288mm.
[0055] Large-scale ball mill of the present invention is as follows with the production method of rolling instead cast steel plate with large thickness:
[0056] 1) Smelting: The molten steel containing various elements is first smelted in an electric furnace. The molten steel in the furnace weighs 100~110 tons, and then sent to the LF refining furnace for refining and adjusting the composition. When the temperature of the molten steel reaches 1650°C, it is transferred to the vacuum degassing furnace ( VD furnace) vacuum treatment, add 110kg of CaSi block before vacuum, feed Al wire 130m, vacuum degree is not more than 66Pa, and b...
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