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A kind of gh2018 alloy electroslag ingot and preparation method thereof

A GH2018, electroslag ingot technology, applied in the field of alloy manufacturing, can solve the problems of uneven composition of alloy ingots, different reactions between metal molten pools and oxygen, and large differences in content, so as to improve composition uniformity and narrow the fluctuation range of melting parameters. , to ensure the effect of surface quality

Active Publication Date: 2021-10-01
JIANGSU LONGDA SUPERALLOY MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The alloy contains a certain amount of Al and Ti elements with large differences in content. The material will be released from the air during the electroslag remelting process, and the Al and Ti elements themselves are active and easy to react with oxygen in the atmosphere; With the progress of the whole process of electroslag remelting, the metal molten pool reacts with oxygen in each stage of electroslag remelting is also different, which leads to the uneven composition of alloy ingots after electroslag remelting

Method used

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  • A kind of gh2018 alloy electroslag ingot and preparation method thereof
  • A kind of gh2018 alloy electroslag ingot and preparation method thereof
  • A kind of gh2018 alloy electroslag ingot and preparation method thereof

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Effect test

Embodiment 1

[0023] A GH2018 alloy electroslag ingot, wherein: by mass percentage, the composition content of elements in the alloy is: C 0.040wt%, Cr 18.5wt%, Ni 40.5wt%, Al 0.6wt%, Ti 2.0wt% , W 1.85wt%, Mo3.8wt%, Mn 0.01wt%, Ce 0.002wt%, Si 0.2wt%, P 0.001wt%, S 0.001wt%, B0.001wt%, Zr 0.005wt%, Cu 0.02wt% , The balance is Fe.

[0024] A preparation method of GH2018 alloy electroslag ingot, wherein: comprising the following steps:

[0025] 1) The composition of the nickel-based superalloy alloy is calculated by mass percentage: C 0.040wt%, Cr 18.5wt%, Ni40.5wt%, Al 0.6wt%, Ti 2.0wt%, W 1.85wt%, Mo 3.8wt% , Mn 0.01wt%, Ce0.002wt%, Si 0.2wt%, P 0.001wt%, S 0.001wt%, B 0.001wt%, Zr 0.005wt%, Cu0.02wt%, the balance is Fe; , Ni, W, Mo, Mn, Ce, Si, P, S, B, Zr, Cu into the crucible, put the crucible into a vacuum induction furnace for vacuum melting, add Al and Ti into the crucible for refining, and fill it with argon Then add B, Ce, Zr, cast, obtain ingot;

[0026] 2) The ingot is rolled...

Embodiment 2

[0034]A GH2018 alloy electroslag ingot, wherein: by mass percentage, the composition content of elements in the alloy is: C 0.045wt%, Cr 19.5wt%, Ni 42.0wt%, Al 0.7wt%, Ti 2.15wt% , W 2.05wt%, Mo4.0wt%, Mn 0.02wt%, Ce 0.01wt%, Si 0.4wt%, P 0.01wt%, S 0.01wt%, B 0.005wt%, Zr 0.02wt%, Cu 0.1wt% , The balance is Fe.

[0035] A preparation method of GH2018 alloy electroslag ingot, wherein: comprising the following steps:

[0036] 1) The composition of the nickel-based superalloy alloy is calculated by mass percentage: C 0.045wt%, Cr 19.5wt%, Ni42.0wt%, Al 0.7wt%, Ti 2.15wt%, W 2.05wt%, Mo 4.0wt% , Mn 0.02wt%, Ce0.01wt%, Si 0.4wt%, P 0.01wt%, S 0.01wt%, B 0.005wt%, Zr 0.02wt%, Cu0.1wt%, the balance is Fe; , Ni, W, Mo, Mn, Ce, Si, P, S, B, Zr, Cu into the crucible, put the crucible into a vacuum induction furnace for vacuum melting, add Al and Ti respectively into the crucible for refining, and fill it with argon Then add B, Ce, Zr, cast, obtain ingot;

[0037] 2) The ingot is r...

Embodiment 3

[0047] A GH2018 alloy electroslag ingot, wherein: by mass percentage, the composition content of elements in the alloy is: C 0.050wt%, Cr 20.5wt%, Ni 43.5wt%, Al 0.7wt%, Ti2.2wt% , W 2.15wt%, Mo4.2wt%, Mn 0.03wt%, Ce 0.02wt%, Si 0.6wt%, P 0.02wt%, S 0.01wt%, B 0.01wt%, Zr 0.05wt%, Cu 0.2wt% , The balance is Fe.

[0048] A preparation method of GH2018 alloy electroslag ingot, wherein: comprising the following steps:

[0049] 1) The composition of the nickel-based superalloy alloy is calculated by mass percentage: C 0.050wt%, Cr 20.5wt%, Ni43.5wt%, Al 0.7wt%, Ti2.2wt%, W 2.15wt%, Mo 4.2wt% , Mn 0.03wt%, Ce 0.02wt%, Si 0.6wt%, P 0.02wt%, S 0.01wt%, B 0.01wt%, Zr 0.05wt%, Cu 0.2wt%, the balance is Fe; , Ni, W, Mo, Mn, Ce, Si, P, S, B, Zr, Cu were added to the crucible, and the crucible was put into a vacuum induction furnace for vacuum melting, and Al and Ti were added to the crucible for refining, and argon was filled Then add B, Ce, Zr, cast, obtain ingot;

[0050] 2) The in...

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Abstract

The invention provides a GH2018 alloy electroslag ingot, the composition content of elements in the alloy is: C 0.040-0.050wt%, Cr 18.5-20.5wt%, Ni 40.5-43.5wt%, Al 0.6-0.7wt%, Ti 2.0 ~2.2wt%, W 1.85~2.15wt%, Mo 3.8~4.2wt%, Mn 0.01~0.03wt%, Ce 0.002~0.02wt%, Si 0.2~0.6wt%, P 0.001~0.02wt%, S 0.001~ 0.01wt%, B 0.001-0.01wt%, Zr 0.005-0.05wt%, Cu 0.02-0.2wt%, the balance being Fe. In the alloy electroslag ingot electroslag remelting process of the invention, aluminum powder and inert argon gas are added to improve the composition uniformity of the electroslag ingot.

Description

technical field [0001] The invention relates to the field of alloy manufacturing, in particular to a GH2018 alloy electroslag ingot and a preparation method thereof. Background technique [0002] The GH2018 alloy is a Fe-Ni-Cr-based alloy that is solid-solution strengthened by Cr, W, and Mo elements and age-strengthened by Al, Ti elements. The composition is shown in Table 1. The alloy has high plasticity, high high temperature strength level and good oxidation resistance and stamping welding properties. It is suitable for high-temperature components such as combustor flame tubes of aero-engines that work at 800°C for a long time. The alloy is a single-phase austenite structure in the solid solution state, containing MC carbides and trace amounts of M 3 B 2 type borides. [0003] Table 1 Element composition wt% [0004] [0005] The alloy contains a certain amount of Al and Ti elements with large differences in content. The material will be released from the air duri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/02C22B9/18
CPCC22B9/18C22C30/02Y02P10/25
Inventor 李成龙浦益龙王世普赵长虹荣文凯王玉葵李晴王琦钟裕国贾鸿远夏翅鹏
Owner JIANGSU LONGDA SUPERALLOY MATERIAL CO LTD
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