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A nickel-based alloy and electroslag remelting technology, which is applied in the field of electroslag remelting and smelting, can solve the problems of titanium element burning, uneven composition of molten ingot, low average recovery rate of titanium, etc., and achieves the effect of solving burning loss.
Active Publication Date: 2017-06-27
SHANXI TAIGANG STAINLESS STEEL CO LTD
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This alloy is a typical high-titanium-containing aluminum alloy. During electroslag remelting, a large amount of titanium elements will be burned, reaching 20%~40%. The average recovery rate of titanium is low, and the composition of the upper and lower parts of the ingot is seriously uneven. For example, for a billet of 2200-2250mm, the Al element difference between the two ends of the ingot is 0.11%
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Embodiment 1
[0021] The method for electroslag remelting of the nickel-based alloy of the present embodiment is the following sequential steps:
[0022] Select the nickel-based alloy to make a steel billet with a thickness of 220mm, and the weight percentage of the nickel-based alloy composition is:
[0025] Ti: 0.83%, the rest is Fe and unavoidable impurities.
[0026] Cut the steel billet into two nickel-based alloy billets with a length of 2210mm, a width of 220mm, and a height of 220mm. , the inner chamfer 4 is the opposite chamfer of two nickel-based alloy billets 1, the length of both sides is 15mm), and the surface of the electrode is polished, with a roughness Ra of 4.35 μm.
[0027] Process the titanium plate into a titanium plate 2 with a width of 100 mm, a length of 300 mm and a thickness of 1.0 mm, add it between two nickel-based alloy bill...
Embodiment 2
[0031] The method for electroslag remelting of the nickel-based alloy of the present embodiment is the following sequential steps:
[0032] Select the nickel-based alloy to make a steel billet with a thickness of 220mm, and the weight percentage of the nickel-based alloy composition is:
[0035] Ti: 0.87%, the rest is Fe and unavoidable impurities.
[0036] Cut the steel billet into two nickel-based alloy steel billets with a length of 2210mm, a width of 110mm, and a height of 220mm. , the inner chamfer 4 is the opposite chamfer of two nickel-based alloy billets 1, the length of both sides is 15mm), and the surface of the electrode is polished, with a roughness Ra of 5.21 μm.
[0037] Process the titanium plate into a titanium plate 2 with a width of 40 mm, a length of 300 mm and a thickness of 1.0 mm, add it between two nickel-based alloy...
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Abstract
The invention relates to a nickel-based alloy electro slag remelting smelting method. The method comprises the following steps that I, nickel-based alloy is selected to be made into a steel billet; II, the steel billet is cut into two nickel-based alloy steel billet bodies with the length being 2200-2250 mm and the width being 100-250 mm; III, a titanium plate is machined into a titanium plate body with the width being 40-105 mm and the length being 300+/-50 mm, the titanium plate body is sandwiched between the two nickel-based alloy steel billet bodies, then explosion face welding is conducted, and the width of the titanium plate body is smaller than that of the nickel-based alloy steel billet bodies; and IV, electro slag remelting is conducted, specifically, tribasic slag of CaF2, CaO and Al2O3 is used as the basis for a premelting slag system, MgO is added, then TiO2 is added, a new premelting slag system is manufactured, and the adding amount of new premelting slag is 0.045-0.065 kg per kilogram of the nickel-based alloy steel billet bodies. According to the nickel-based alloy electro slag remelting smelting method, the burning loss of titanium elements in the electro slag remelting process is low, the Al element content in cast ingots is low, and the alloy components are even after remelting.
Description
technical field [0001] The invention relates to a method for electroslag remelting and smelting, in particular to a method for electroslag remelting and smelting of nickel-based alloys. Background technique [0002] Electroslag remelting is a process for re-refining steel produced by general smelting methods. Its working principle is that current passes through the slag pool to generate high-temperature heating of the consumable electrode, and the top of the consumable electrode gradually melts to form metal droplets, which fall off and wear After passing through the slag pool, it is cooled by a water-cooled crystallizer and solidified in the molten metal pool to form an ingot. Electroslag remelting products have pure metal, compact structure, uniform composition, smooth surface and excellent performance. [0003] The nickel-based alloy designed in the present invention is a fully austenitic iron-nickel-chromium alloy containing titanium and aluminum, and Cu and Mo are adde...
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