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Nickel-based wrought superalloy for coke reactor and preparation method thereof

A technology of deforming superalloys and reactors, which is applied in the field of metal structural materials, can solve problems such as poor corrosion resistance of alkali metals, and achieve the effect of improving high temperature strength

Active Publication Date: 2022-04-08
上海康晟航材科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the in-depth research on coke reactivity and post-reaction strength, the thermal properties of coke under the condition of alkali metal corrosion have begun to be studied. The high temperature resistant alloy steel reactor in GB / T 4000-2008, its alkali metal corrosion resistance Poor ability

Method used

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  • Nickel-based wrought superalloy for coke reactor and preparation method thereof
  • Nickel-based wrought superalloy for coke reactor and preparation method thereof
  • Nickel-based wrought superalloy for coke reactor and preparation method thereof

Examples

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Effect test

Embodiment 1

[0053] Alloy composition: C 0.06%, Cr26%, W 14%, Mo 1%, Al 0.8%, Ti 0.5%, Fe 1%, Mn0.5%, Si 0.8%, P 0.013%, S 0.013%, Ni is the rest quantity.

[0054] Step 1, annealing treatment: heat the hot-rolled sheet at 1150°C for 5 minutes, and then water-cool to room temperature;

[0055] Step 2, deformation treatment: the plate after solution treatment is subjected to cold rolling with a total deformation of 60%, lubricated with emulsion, and the reduction rate of each pass is 10%;

[0056] Step 3, solution treatment: the cold-rolled sheet is solution-treated at 1150° C. for 2 hours, then water-cooled to room temperature, and the solution-treated sheet is pickled and dried.

[0057] The alloy microstructure obtained in this example is as follows figure 2 shown. Its performance experimental test data is: 900 ℃ oxidation rate 0.0632g / (m 2 · h); the yield strength at room temperature is 342MPa, the tensile strength is 896MPa, and the elongation is 60%; the yield strength at 900°C i...

Embodiment 2

[0059] Alloy composition: C 0.08%, Cr 27.5%, W 16%, Mo 2%, Al 1.5%, Ti 0.5%, Fe 1%, Mn0.5%, Si 0.8%, P 0.013%, S 0.013%, Ni is margin.

[0060] Step 1, annealing treatment: heat the hot-rolled sheet at 1150°C for 5 minutes, and then water-cool to room temperature;

[0061] Step 2, deformation treatment: the plate after solution treatment is subjected to cold rolling with a total deformation of 60%, lubricated with emulsion, and the reduction rate of each pass is 10%;

[0062] Step 3, solution treatment: the cold-rolled sheet is solution-treated at 1150° C. for 4 hours, then water-cooled to room temperature, and the solution-treated sheet is pickled and dried.

[0063] The alloy microstructure obtained in this example is as follows image 3 shown. Its performance test data is: 900°C oxidation rate 0.0590g / (m 2 · h); the room temperature yield strength is 359MPa, the tensile strength is 912MPa, and the elongation is 54%; the yield strength at 900°C is 145MPa, the tensile str...

Embodiment 3

[0065] Alloy composition: C 0.08%, Cr 27.5%, W 16%, Mo 2%, Al 1.5%, Ti 0.5%, Fe 1%, Mn0.5%, Si 0.8%, P 0.013%, S 0.013%, Ni is margin.

[0066] Step 1, annealing treatment: heat the hot-rolled sheet at 1150°C for 30 minutes, then water-cool to room temperature;

[0067] Step 2, deformation treatment: cold rolling the plate after solution treatment with a total deformation of 70%, using emulsion for lubrication, and the reduction rate of each pass is 12%;

[0068] Step 3, solution treatment: the cold-rolled sheet is solution-treated at 1150° C. for 4 hours, then water-cooled to room temperature, and the solution-treated sheet is pickled and dried.

[0069] The alloy microstructure obtained in this example is as follows Figure 4 shown. Its performance experimental test data is: 900 ℃ oxidation rate 0.0588g / (m 2 · h); the yield strength at room temperature is 347MPa, the tensile strength is 902MPa, and the elongation is 50%; the yield strength at 900°C is 141MPa, the tensile...

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Abstract

The invention discloses a nickel-based wrought superalloy for a coke reactor and a preparation method of the nickel-based wrought superalloy. The alloy comprises the following components in percentage by weight: 0.04-0.08% of C, 26.5-27.5% of Cr, 13.0-16.0% of W, 1.0-2.0% of Mo, 0.8-1.5% of Al, 0.3-0.7% of Ti, less than or equal to 1% of Fe, 0.5% of Mn, 0.8% of Si, 0.013% of P, 0.013% of S and the balance of Ni. And the deformed high temperature alloy is a solid solution strengthening type nickel-based anti-oxidation high-temperature alloy. The prepared nickel-based wrought superalloy for the coke reactor has good strength and oxidation resistance at the high temperature of 900 DEG C, and the alloy material meets the requirement of serving as a sintering key part of the coke reactor.

Description

technical field [0001] The invention relates to the technical field of metal structural materials, in particular to a nickel-based deformed superalloy for coke reactors and a preparation method thereof. Background technique [0002] Coke is the most important basic raw material in blast furnace smelting. In recent years, with the development and progress of blast furnace smelting technology, especially the rapid development of large-scale blast furnace volume, high blast temperature technology and blast oxygen-enriched coal injection technology, coke is used as the skeleton of the blast furnace inner material column to ensure the ventilation and liquid permeability of the furnace. more prominent. The quality of coke, especially coke reactivity and post-reaction strength has a great impact on the modern blast furnace smelting process, and has become a key factor limiting the stable, balanced, high-quality and efficient production of molten iron in the blast furnace. Recogni...

Claims

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Application Information

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IPC IPC(8): C22C19/05C22F1/10
CPCY02P10/25
Inventor 汪晶王艳芳汪东
Owner 上海康晟航材科技股份有限公司
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