Vacuum consumable remelting method of deformed high-temperature alloy GH4169
A vacuum self-consumption remelting, GH4169 technology, applied in the field of high-quality deformed superalloy preparation for aero-engines, can solve the problems of large fluctuations in mechanical properties, poor structure uniformity of deformed superalloys, etc., and achieve high welding quality and heat-affected zone Small, the effect of improving process stability
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Embodiment 1
[0041] Example 1: GH4169 alloy vacuum self-consumable remelting electrode ingots were prepared by using the electroslag remelting process in an argon protective atmosphere, and the electrode ingots were placed in a trolley-type heat treatment furnace at room temperature for high-temperature stress relief annealing. The GH4169 ingot was heated slowly from room temperature (3°C / min) to 600°C and kept for 1 hour; the temperature was continuously raised to 950°C and held for 2 hours. Then the power is cut off, and the ingot is cooled to room temperature with the furnace; the head and tail of the electrode ingot after annealing are cut off with a sawing machine, and the thickness of the cut is 80mm. The surface layer of the ingot is machined by a lathe, and the removal amount of unilateral machining is 5mm. It is required that the surface of the processed electrode ingot should be free from cracks, pits, protrusions, inclusions, etc. visually. The flatness of the entire consumable...
Embodiment 2
[0042] Example 2: GH4169 alloy vacuum self-consumable remelting electrode ingot was prepared by electroslag remelting process in argon protective atmosphere, and the electrode ingot was placed in a trolley-type heat treatment furnace at room temperature for high-temperature stress relief annealing. The GH4169 ingot is heated slowly from room temperature (5°C / min) to 620°C for 2 hours; continue to heat up to 950°C for 3 hours. Then the power is cut off, and the ingot is cooled to room temperature with the furnace; the head and tail of the electrode ingot after annealing are cut off with a sawing machine, and the thickness of the cut is 100mm. The surface layer of the ingot is machined by lathe, and the removal amount of unilateral machining is 6mm. It is required that the surface of the processed electrode ingot should be free from cracks, pits, protrusions, inclusions, etc. visually. The flatness of the entire consumable electrode is required to be 3mm / m, and the out-of-round...
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