A kind of feeding device and feeding method of nickel alloy ingot

Abstract

The invention provides a nickel alloy ingot feeding device and a feeding method thereof, comprising a consumable electrode, a lower crystallizer, a bottom water tank, a consumable electrode, a slag pool in the lower crystallizer, a molten metal pool and The loop formed by the ingot and the bottom water tank is connected with the power supply of the transformer through wires, and also includes a column, a screw, a drive motor, a support platform and an upper crystallizer; the outer top of the lower crystallizer is provided with external threads, and the lower crystallizer includes threaded sleeves, The extension sleeve and the thin spacer sleeve, the extension sleeve and the thin spacer sleeve extend into the lower crystallizer, the outer side of the extension sleeve abuts against the inner wall of the upper crystallizer, and the bottom end of the thin spacer sleeve is lower than the bottom end of the extension sleeve; the support platform It is arranged at the bottom of the bottom water tank, and its two ends are slidably connected to two sets of columns through sliders, the sliders are threaded to the outside of the screw, the screw is rotatably connected to the columns, and one end of the screw is connected to the drive motor. The present invention Not only can the effect of less melting and more feeding be achieved, but also better flexibility and adjustment accuracy.

Description

technical field [0001] The invention relates to an electroslag remelting technology, in particular to a feeding device and a feeding method for nickel alloy ingots. Background technique [0002] The electroslag remelting method is used to process nickel alloy ingots, which can realize the purification of metals and obtain uniform and dense ingots with clean structure. Generally, the resistance heat generated when the current passes through the slag is used as the heat source during processing. The slag remelted ingot has high purity, low sulfur content, less non-metallic inclusions, smooth ingot surface, clean, uniform and dense, uniform metallographic structure and chemical composition, and its as-cast mechanical properties can reach or exceed those of the same kind of forgings indicators, and its quality depends on a reasonable electroslag remelting process and equipment conditions to ensure the electroslag process; and the purpose of feeding in the later stage of the elec...

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Problems solved by technology

[0002] The electroslag remelting method is used to process nickel alloy ingots, which can realize the purification of metals and obtain uniform and dense ingots with clean structure. Generally, the resistance heat generated when the current passes through the slag is used as the heat source during processing. The slag remelted ingot has high purity, low sulfur content, less non-metallic inclusions, smooth ingot surface, clean, uniform and dense, uniform metallographic structure and chemical composition, and its as-cast mechanical properties can reach or exceed those of the same kind of forgings indicators, and its quality depends on a reasonable electroslag remelting process and equipment conditions to ensure the electroslag process; and the purpose of feeding in the later stage of the electroslag remelting process is mainly to compensate for the volume shrinkage of the molten metal pool in the later stage of remelting, to avoid The center of the ingot is loose, and the conventional electroslag remelting feeding operation is carried out in the later stage of remelting. By reducing the melting power of the consumable electrode, and then reducing the melting speed, the purpose of feeding while melting is achieved. Although the feeding operation The power is small, but it is impossible to completely eliminate the residual molten pool, and the filling quality of the ingot during the feeding period is also poor, so it is still necessary to cut off a small part of the remaining head of the ingot

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