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Manufacturing method of nuclear nickel-base high-temperature alloy GH 4145 wire

A technology of GH4145 and nickel-based superalloy, which is applied in the field of nuclear nickel-based superalloy GH4145 wire preparation, can solve the problem of high scrap rate of GH4145 alloy wire, achieve simple and controllable production process, ensure dimensional accuracy and surface quality , the effect of high dimensional accuracy

Active Publication Date: 2016-04-13
CENT IRON & STEEL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing nuclear nickel-based superalloy GH4145 wire, which solves the problems of extremely high scrap rate of GH4145 alloy wire.

Method used

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  • Manufacturing method of nuclear nickel-base high-temperature alloy GH 4145 wire
  • Manufacturing method of nuclear nickel-base high-temperature alloy GH 4145 wire
  • Manufacturing method of nuclear nickel-base high-temperature alloy GH 4145 wire

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Embodiment 1

[0035] A preparation method of nickel-based superalloy GH4145 wire for nuclear use, the diameter of the finished wire is Φ6.5mm, comprising the following steps:

[0036] Step 1): According to the GH4145 alloy batching, the chemical composition is by weight percentage: 15.5% of Cr, 0.75% of Al, 2.50% of Ti, 0.9% of (Nb+Ta), 0.3% of Mn, 0.05% of C, and The amount is Ni.

[0037] Step 2): According to the ingredients described in step 1), refine in a vacuum furnace, and refine in twice, the first refining time is 20 minutes, and the vacuum is 2 Pa, the second refining time is 10 minutes, and the vacuum is 2 Pa. 0.1Pa. After the charge is melted, use high-power electromagnetic stirring for 2 minutes, and pour at a temperature of 1545°C to obtain a remelted electrode rod;

[0038] Step 3): The remelted electrode rod described in step 2) is remelted by vacuum arc (vacuum self-consumption) to obtain an alloy ingot;

[0039]Step 4): After the alloy ingot described in step 3) is sub...

Embodiment 2

[0046] A preparation method of nickel-based superalloy GH4145 wire for nuclear use, the diameter of the finished wire is Φ6.0mm, comprising the following steps:

[0047] Step 1): According to the GH4145 alloy batching, the chemical composition is by weight percentage: 16.0% of Cr, 0.55% of Al, 2.50% of Ti, 1.0% of (Nb+Ta), 0.3% of Mn, 0.04% of C, and The amount is Ni.

[0048] Step 2): According to the ingredients described in step 1), refine in a vacuum furnace, and refine in twice, the first refining time is 25 minutes, the vacuum is 3Pa, the second refining time is 15 minutes, the vacuum is 0.05Pa. After the charge is melted, use high-power electromagnetic stirring for 3 minutes, and pour at a temperature of 1550°C to obtain a remelted electrode rod;

[0049] Step 3): The remelted electrode rod described in step 2) is remelted by vacuum arc (vacuum self-consumption) to obtain an alloy ingot;

[0050] Step 4): After the alloy ingot described in step 3) is homogenized at a...

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Abstract

The invention provides a manufacturing method of a nuclear nickel-base high-temperature alloy GH 4145 wire and belongs to the technical field of high-temperature alloy wire machining. The method includes the steps that after being blended according to the mass percent, raw materials are subjected to vacuum induction and vacuum consumption duplex smelting and cast into an alloy ingot; the alloy ingot is homogenized so as to be forged into an alloy ingot blank, and the alloy ingot blank is then subjected to flaw detection and finishing and hot-rolled into a wire rod with the diameter phi ranging from 8 mm to 12 mm; the wire rod is subjected to solution treatment and is rounded, peeled and coated with a film; drawing and annealing are performed sequentially, the wire rod is pulled into the alloy wire with the required diameter, and the GH 4145 alloy wire is obtained. By the adoption of the nuclear nickel-base high-temperature alloy wire, the whole process is free of acid pickling, the special nuclear requirement is met, and meanwhile the finished wire is high in size accuracy, good in surface quality, even in component and structure and excellent in mechanical performance and processing performance. The method can be widely applied to the machining field of the nuclear nickel-base high-temperature alloy wire.

Description

technical field [0001] The invention belongs to the technical field of nickel-based high-temperature alloy wire processing, and in particular relates to a preparation method of nickel-based high-temperature alloy GH4145 wire for nuclear use. Background technique [0002] The core of a nuclear power plant is the reactor, and the Pressurized Water Reactor Control Rod Drive Mechanism (CRDM for short) is an important mechanical device in the nuclear reaction system. The various spring components in the control rod drive mechanism are directly in contact with the coolant of the primary circuit, and have been subjected to high temperature (design temperature 343°C), high pressure (design pressure 17.2MPa) and corrosion of reactor coolant for a long time, so the spring materials are proposed Higher requirements are imposed: the material must not only be resistant to high temperature and high pressure, but also have sufficient toughness, plasticity, wear resistance, impact resistanc...

Claims

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Application Information

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IPC IPC(8): C22C19/05C22F1/10
CPCC22C19/058C22F1/10
Inventor 段春华石照夏韩光炜颜晓峰赵明汉陈霞
Owner CENT IRON & STEEL RES INST
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