High manganese steel casting grain refining casting method
A technology of fine-grained, high-manganese steel, applied in the field of casting, can solve the problems of coarse grains of high-manganese steel castings, affecting the quality of castings, micro-cracks, etc. The effect of refinement
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[0012] The fine-grained casting method of the high manganese steel casting of the present embodiment comprises the following steps:
[0013] (1) The molten steel is released at high temperature, the temperature of which is 1550°C, and is refined by blowing argon outside the furnace in the refining ladle, strictly controlling the content of phosphorus and sulfur, P=0.028%, S=0.020%;
[0014] (2) Microalloying is carried out in the refining ladle, and molybdenum, niobium, vanadium, and titanium are added, and the addition amount is 0.10% of the molten steel weight;
[0015] (3) The microalloying temperature in the refining ladle is 1690°C, and the pouring temperature is 1605°C. Before pouring, fill the cavity with argon, and pour under the protection of argon;
[0016] (4) Using the hot boxing process, after the casting is poured, the casting is boxed within 60 minutes after the casting is completely solidified, and the riser is thermally cut. After cutting, it is sent to the he...
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