Electroslag remelting slag system of super duplex stainless steel
A duplex stainless steel and electroslag remelting technology, which is applied in the field of electroslag remelting slag, can solve the problems of deteriorated material thermoplasticity, mechanical properties and corrosion resistance, adverse effects on thermal processing performance, and low thermal processing yield, etc. To achieve the effect of broadening and further promotion and application, less impurity elements, and improving the purity of the alloy
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Embodiment 1
[0029] The electroslag heavy melting slag system of super duplex stainless steel has a counterweight of 7kg, and the distribution ratio of each component is, CaF 2 : 4.9kg (70%), CaO: 0.91kg (13%), Al 2 o 3 : 0.7kg (10%), MgO: 0.35kg (5%), SiO 2 : 0.14kg (2%).
[0030] The counterweight of super duplex stainless steel is 30kg, and it is cast into Φ130mm by vacuum induction melting. The weight percentage of each component is: C: 0.012%, Cr: 27.5%, Ni: 7%, Mo: 4.5%, Si: 0.2% , Mn: 0.2%, N: 0.5%, Fe: the remaining self-consumable electrode rod. After the surface of the consumable electrode rod is sanded and finished, it is reserved for electroslag remelting.
[0031] After the above slag material is prepared, it is baked at 800℃×8h, then heated in the slag melting furnace to a molten state and poured into a Φ160mm crystallizer, and the above electrode rod is slowly inserted into the slag material in a molten state. Adjust the voltage to stabilize to 45V, and the current to 3...
Embodiment 2
[0036] The electroslag remelting slag system of super duplex stainless steel has a counterweight of 45kg, and the distribution ratio of each component is, CaF 2 : 29.25kg (65%), CaO: 6.75kg (15%), Al 2 o 3 : 4.5kg (10%), MgO: 3.6kg (8%), SiO 2 : 0.9kg (2%).
[0037] The counterweight of super duplex stainless steel is 500kg, which is cast into Φ200mm by vacuum induction melting, and the composition percentage is: C: 0.010%, Cr: 30.5%, Ni: 7%, Mo: 4.5%, Si: 0.2%, Mn: 0.2%, N: 0.6%, Fe: the remaining self-consumable electrode rod. After the surface of the consumable electrode rod is sanded and finished, it is reserved for electroslag remelting.
[0038] After the above slag is prepared, it is baked at 800℃×12h, and then the slag is melted and arced in a Φ400mm crystallizer until the slag is completely melted into a molten state. The above electrode rod is slowly inserted into the molten slag, and the power is turned on. Adjust the voltage after the arc to stabilize to 53V a...
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