Nickel-base alloy for nuclear power equipment and manufacturing method for nickel-base-alloy hot rolled plate

A technology of nickel-based alloy and manufacturing method, which is applied in the field of nickel-based corrosion-resistant alloy plate manufacturing, and can solve the problems of lack of patent documents and introductions, etc.

Active Publication Date: 2019-01-04
宝武特种冶金有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As for the production method of nickel-based alloy plates for nuclear power equipment, foreign companies have kept strict confidentiality, and have not made relevant reports, and there are no relevant patent documents and introductions.

Method used

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  • Nickel-base alloy for nuclear power equipment and manufacturing method for nickel-base-alloy hot rolled plate
  • Nickel-base alloy for nuclear power equipment and manufacturing method for nickel-base-alloy hot rolled plate
  • Nickel-base alloy for nuclear power equipment and manufacturing method for nickel-base-alloy hot rolled plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] According to the composition described in the content of the present invention, the alloy electrode rod is cast by vacuum induction melting, and the electroslag remelting furnace is protected by argon gas, and remelted into a large electroslag remelting steel ingot with a weight of more than 10 tons, and the obtained alloy composition is shown in Table 3. Show.

[0066] The large electroslag remelted steel ingot is heated and held at 1130°C for 7 hours, then out of the furnace for forging, upsetting twice, and the deformation is guaranteed to be (30±5)% per drawing, and forged into a square slab suitable for rolling.

[0067] The slab is kept in the heating furnace at 1090°C for 5 hours to roll the steel coil. The starting rolling temperature is 1050°C and the final rolling temperature is 920°C, and rolled into a plate with a thickness of 90mm, a width of 2250mm and a length of 5800mm.

[0068] The solution heat treatment temperature is 1035°C, and the heat preservation...

Embodiment 2

[0071] According to the composition described in the content of the present invention, the alloy electrode rod is cast by vacuum induction melting, and the electroslag remelting furnace is protected by argon gas, and remelted into a large electroslag remelting steel ingot with a weight of more than 10 tons, and the obtained alloy composition is shown in Table 3. Show.

[0072] The large electroslag remelted steel ingot is heated and held at 1190°C for 10 hours, then out of the furnace for forging, upsetting 3 times, and the deformation is guaranteed to be (40±5)% per drawing, and forged into a square slab suitable for rolling.

[0073] The slab is kept in a heating furnace at 1160°C for 6 hours to roll the steel coil. The starting rolling temperature is 1100°C and the final rolling temperature is 1010°C, and rolled into a plate with a thickness of 82mm, a width of 2500mm, and a length of 5200mm.

[0074] The solution heat treatment temperature is 1060°C, and the heat preservat...

Embodiment 3

[0077] According to the composition described in the content of the present invention, the alloy electrode rod is cast by vacuum induction melting, and the electroslag remelting furnace is protected by argon gas, and remelted into an electroslag remelting steel ingot weighing more than 5 tons, and the obtained alloy composition is shown in Table 3. .

[0078] The electroslag remelted steel ingot is heated and held at 1210°C for 6 hours, then out of the furnace for forging, upsetting once, and the deformation is guaranteed to be (35±5)% per drawing, and forged into a square slab suitable for rolling.

[0079] The slab is kept in a heating furnace at 1200°C for 5 hours to roll the steel coil. The starting rolling temperature is 1100°C, the final rolling temperature is 1000°C, and rolled into a plate with a thickness of 40mm, a width of 1200mm, and a length of 8100mm.

[0080] The solution heat treatment temperature is 1080°C, and the heat preservation is 65min; the aging heat tr...

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Abstract

The invention provides nickel-base alloy for nuclear power equipment and a manufacturing method for a nickel-base-alloy hot rolled plate. The nickel-base alloy comprises C, Cr, Fe, Mg, Ce and the balance Ni and unavoidable impurities, wherein the content of the Ni is higher than or equal to 58%. The preparing method for the hot rolled plate includes the steps of nickel-base alloy manufacturing, plate hot rolling forming and plate heat treatment. Compared with the prior art, the nickel-base alloy for the nuclear power equipment and the manufacturing method for the nickel-base-alloy hot rolled plate have the advantages that compared with the performance of an ASME SB-168UNS N06690 alloy plate, the performance of the hot rolled plate manufactured with the nickel-base alloy and the method is remarkably improved, the tensile strength of the indoor temperature can be increased by 10% about, the plasticity (extending rate) is not reduced, the excellent 350-DEG C tensile performance meeting the using requirement is achieved, the intercrystalline corrosion rate is reduced by 30% about, the corrosion resistance is better, and the nickel-base alloy is more suitable for nuclear-power criticalequipment.

Description

technical field [0001] The invention relates to the technical field related to the manufacture of nickel-based corrosion-resistant alloy plates, in particular to the composition and manufacturing method of a large single-weight and wide-width hot-rolled nickel-based alloy thick plate, which can be used for critical nuclear power equipment. It specifically covers the composition, smelting, forging, rolling, heat treatment and other process technologies of large single-weight and wide-width hot-rolled nickel-based alloy thick plates. Background technique [0002] Nuclear power is an advanced clean energy, an important part of the national energy strategy, and one of the most important measures to achieve the national energy conservation and emission reduction goals. The general design life of nuclear power equipment is 60 years. Due to the excellent high temperature resistance and corrosion resistance of nickel-based alloys, a large number of key components in the nuclear isla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/05C22F1/10
CPCC22C19/058C22F1/10
Inventor 徐长征马天军黄海燕邢钊赵欣朱军
Owner 宝武特种冶金有限公司
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