Wear-resistant steel and smelting method thereof
A wear-resistant steel and converter smelting technology, applied in the field of wear-resistant steel and smelting of the wear-resistant steel, can solve the problem of no discovery and the like
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Embodiment 1
[0019] First, the molten iron in the molten iron pretreatment device is desulfurized, that is, adding a desulfurizer made of magnesium powder and lime powder to the molten iron, the weight ratio between magnesium powder and lime powder is 1:3, through routine testing, when the molten iron When the sulfur content is ≤ 0.005%, the pretreatment process is completed, and the molten iron is poured into the converter for smelting; in the converter smelting process, lime and light-burned dolomite are added to the converter to form slag, and then oxygen is injected into the converter for 14 minutes. After the oxygen blowing process is completed, the steel is tapped, the tapping temperature is kept at 1670°C, and the amount of slag dropped is less than or equal to 5 kg of steel slag per ton of steel; Add niobium, manganese, silicon, chromium, etc. to the ladle refining furnace to adjust the alloy content in the steel, and add deoxidizer at the same time, keep the top slag of molten stee...
Embodiment 2
[0021] According to the method of Example 1, the steps of molten iron pretreatment, converter smelting, and out-of-furnace refining are used to smelt wear-resistant steel. The temperature is maintained at 1690°C; the silicon aluminum barium strontium calcium deoxidizer added during the tapping process is 350 kg per furnace of steel (150 tons of steel), and the top slag of molten steel in the furnace is kept at 300mm. The wear-resistant steel includes materials in the following weight percentages: carbon 0.12%; silicon 0.20%; manganese 1.70%; niobium 0.05%; chromium 0.55%; phosphorus ≤ 0.012%; unavoidable impurities.
Embodiment 3
[0023] According to the method of Example 1, the steps of molten iron pretreatment, converter smelting, and out-of-furnace refining are used to smelt wear-resistant steel. The temperature of the steel is maintained at 1675°C; the silicon aluminum barium strontium calcium deoxidizer added during the tapping process is 400 kg per furnace of steel (150 tons of steel), and the headroom in the furnace is kept at 200mm. The wheel steel includes materials in the following weight percentages: 0.12% carbon; 0.15% silicon; 1.70% manganese; 0.03% niobium; 0.60% chromium; phosphorus ≤ 0.012%; Avoid impurities.
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