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Nickel-based alloy radial-forging structure control method

A technology of nickel-based alloy and control method, which is applied in the field of metallurgy, can solve the problems of forging impermeability, radial forging structure mixed crystals, etc., and achieve the effect of forging impermeability

Active Publication Date: 2017-10-13
太原钢铁(集团)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a method for controlling the radial forging structure of nickel-based alloys to solve the problems of impenetrable forging and mixed crystals in the radial forging structure

Method used

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  • Nickel-based alloy radial-forging structure control method
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  • Nickel-based alloy radial-forging structure control method

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Experimental program
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Effect test

Embodiment 1

[0030] In this embodiment, the nickel-based alloy diameter forging structure control method includes the following steps:

[0031] S01), preparing nickel-based alloy ingot;

[0032] Specifically, the VIM+ESR process, that is, the vacuum induction smelting + electroslag remelting process is used to prepare nickel-based alloy ingots. Of course, the VIM+VAR process can also be used, that is, vacuum induction smelting + vacuum self-consumption to prepare nickel-based alloy ingots. In this embodiment, the diameter of the prepared nickel-based alloy ingot is φ360 mm, that is, the initial size of the ingot is φ360 mm. The mass percentage distribution ratio of the main components of the ingot is: Ni base, 22% Cr, 12% Co, 9% Mo, 1.2% Al, 0.44% Ti.

[0033] S02), heat-treating the prepared ingot;

[0034] Specifically, the ingot is put into a heating furnace to be heated to a preset temperature, and kept at the preset temperature for a preset period of time. In this embodiment, the ...

Embodiment 2

[0054] In this embodiment, the nickel-based alloy diameter forging structure control method includes the following steps:

[0055] S01), preparing nickel-based alloy ingot;

[0056] Specifically, the VIM+ESR process, that is, the vacuum induction smelting + electroslag remelting process is used to prepare nickel-based alloy ingots. Of course, the VIM+VAR process can also be used to prepare nickel-based alloy ingots, that is, vacuum induction smelting + vacuum self-consumption process. In this embodiment, the diameter of the prepared nickel-based alloy ingot is φ360 mm, that is, the initial size of the ingot is φ360 mm. The mass percentage distribution ratio of the main components of the ingot is: Ni base, 22% Cr, 9% Mo, 5% Nb, 0.2% Ti.

[0057] S02), heat-treating the prepared ingot;

[0058] Specifically, the ingot is put into a heating furnace to be heated to a preset temperature, and kept at the preset temperature for a preset period of time. In this embodiment, the pre...

Embodiment 3

[0078] In this embodiment, the nickel-based alloy diameter forging structure control method includes the following steps:

[0079] S01), preparing nickel-based alloy ingot;

[0080] Specifically, the VIM+ESR process, that is, the vacuum induction smelting + electroslag remelting process is used to prepare nickel-based alloy ingots. Of course, the VIM+VAR process can also be used to prepare nickel-based alloy ingots, that is, vacuum induction smelting + vacuum self-consumption process. In this embodiment, the diameter of the prepared nickel-based alloy ingot is φ360 mm, that is, the initial size of the ingot is φ360 mm. The mass percentage distribution ratio of the main components of the ingot is: Ni base, 25% Cr, 20% Co, 0.5% Mo, 1.5% Nb, 1.3% Ti, 1.3% Al.

[0081] S02), heat-treating the prepared ingot;

[0082] Specifically, the ingot is put into a heating furnace to be heated to a preset temperature, and kept at the preset temperature for a preset period of time. In thi...

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Abstract

The invention discloses a nickel-based alloy radial-forging structure control method. The nickel-based alloy radial-forging structure control method comprises the following steps that a), a nickel-based alloy casting ingot is manufactured; b), the manufactured casting ingot is heated; c), the heated casting ingot is subjected to multiple passes of radial forging, wherein for radial forging of passes of a preset number, control on deformation of a forged workpiece is performed according to the following format: deformation of the nth pass (%) is equal to (T multiplied by ln)(Q / m)) / K; in the format, n is the value of the pass and can be 1, 2 and other preset numbers; T is forging temperature (DEG C) of the nth pass; Q is alloy dynamic recrystallization activating energy (KJ / mol); m is forging frequency (times); and K is a nondimensional coefficient (mol / (KJ.DEG C)), and is 100. According to the nickel-based alloy radial-forging structure control method, effective control for a nickel-based alloy radial forging in a forging process can be realized, and therefore, by utilizing the nickel-based alloy radial-forging structure control method, a deformation technological system can be rapidly formulated according to features of different steel types, so that problems of insufficient forging, crystal doping in the radial forging and the like are solved.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method for controlling the radial forging structure of a nickel-based alloy. Background technique [0002] With the development of modern industrial society, nickel-based superalloys are widely used in petrochemical, aerospace, and energy fields due to their excellent performance, and the demand for forgings is also increasing day by day. In order to meet the needs of industrial development, the production of nickel-based superalloys is also increasing. Nickel-based alloys have always been a major problem in thermal processing due to their high content of alloying elements, high thermal deformation resistance, narrow machinable temperature range, and difficulty in controlling the forging structure. [0003] For nickel-based alloy forgings, free forging or diameter forging is generally used for production. For free forging, multiple thickening and elongation processes are u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/10
CPCC22F1/10
Inventor 王岩徐芳泓曾莉任永秀方旭东关明亮
Owner 太原钢铁(集团)有限公司
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