CN110029289A - The manufacturing method of superconduction nuclear fusion 316LN high-performance magnetism-free stainless steel - Google Patents
The manufacturing method of superconduction nuclear fusion 316LN high-performance magnetism-free stainless steel Download PDFInfo
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- CN110029289A CN110029289A CN201910103258.7A CN201910103258A CN110029289A CN 110029289 A CN110029289 A CN 110029289A CN 201910103258 A CN201910103258 A CN 201910103258A CN 110029289 A CN110029289 A CN 110029289A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
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- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
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- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
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- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/007—Heat treatment of ferrous alloys containing Co
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
Abstract
The invention discloses a kind of manufacturing methods of superconduction nuclear fusion 316LN high-performance magnetism-free stainless steel, comprising the following steps: chromic carbide iron, 0# nickel plate, manganese metal and metal molybdenum filament is selected as raw material and to carry out purified treatment；So that the raw material after purified treatment obtain the steel ingot of following mass percent: 0.025≤C≤0.028,0.40≤Si≤0.60,1.70≤Mn≤1.85 according to regulation ratio and regulation technique, S≤0.005, P≤0.005,17.0≤Cr≤17.4,12.5≤Ni≤13.2,2.5≤Mo≤2.75,0.15≤N≤0.17, B≤0.03, Co≤0.10, Nb≤0.05, remaining is Fe；Regulated proportion refers to the proportion of each raw material, it is specified that technique refers to raw material using the process conditions of double vacuum smelting methods；Steel ingot is carried out to suppress fast forging, forging rear annealing；Solution heat treatment is carried out to forging.The invention has the advantages that design is scientific and reasonable for each chemical element component in this stainless steel, the mechanical properties such as tensile strength, yield strength and magnetic conductivity, physical property are all satisfied design requirement.
Description
Technical field
The present invention relates to nuclear grade stainless steel manufacturing technology fields, and in particular to a kind of superconduction nuclear fusion 316LN high-performance
The manufacturing method of magnetism-free stainless steel.
Background technique
Currently, the nuclear reactor of domestic and international nuclear power plant and nuclear ship, main heap-type is with high temperature (280~350 DEG C)
It is the presurized water reactor and boiling-water reactor of working media with high pressure (80~185atm, 1atm=101325Pa) water, due to these nuclear reactors
To the particular/special requirement of structural material, i.e. nuclear stability wants high；Artificial radioactivity wants low；Want small in neutron absorption cross-section.Therefore, with core
Be in contact equipment, component and the stainless steel tubing etc. of primary Ioops system of reactor working media selects chromiumnickel austenite stainless steel
Pipe and a small amount of high nickel corrosion-resistant alloy with austenite structure.According to statistics, 1,000,000 kilowatts of large pressurized water reactor nuclear power plants, core
Reaction reator body, in-pile component, main pipeline and evaporator etc. just need more than 2000 tons of stainless steel plates, stick, tubing and forging, but also not
Including in order to bear the high pressure in nuclear reactor, and institute's built-up welding is largely used on the inside of the Hi-Stren steel pressure vessel used
The chromiumnickel austenite stainless steel of high-temperature resistant water corrosion.
With the progress of science and technology, many countries are all developing new energy tockmark nuclear fusion dress in the world
Set, needed for superconduction nuclear fusion material performance requirement it is higher and higher, but existing steel grade is unable to satisfy these performance requirements.
Summary of the invention
According to the deficiencies of the prior art described above, It is an object of the present invention to provide a kind of superconduction nuclear fusion 316LN
The manufacturing method of high-performance magnetism-free stainless steel, which passes through the raw material for selecting high-purity cleaning, using advanced vacuum
Induction melting+vacuum consumable smelting technique, or electric arc furnaces+VOD vacuum refining+vacuum electroslag remelting technique is used, it produces
Stainless steel mechanical property and physical property reach technical requirements.
The object of the invention realization is completed by following technical scheme:
A kind of manufacturing method of superconduction nuclear fusion 316LN high-performance magnetism-free stainless steel, it is characterised in that the manufacturing method packet
Include following steps:
Chromic carbide iron, 0# nickel plate, manganese metal and metal molybdenum filament is selected as raw material and to carry out purified treatment；
So that the raw material after purified treatment obtain the steel of following mass percent according to regulation ratio and regulation technique
Ingot: 0.025≤C≤0.028,0.40≤Si≤0.60,1.70≤Mn≤1.85, S≤0.005, P≤0.005,17.0≤Cr≤
17.4,12.5≤Ni≤13.2,2.5≤Mo≤2.75,0.15≤N≤0.17, B≤0.03, Co≤0.10, Nb≤0.05,
Remaining is Fe；The regulated proportion refers to that the proportion of each raw material, the regulation technique refer to that the raw material use
The process conditions of double vacuum smelting methods；
The steel ingot is carried out to suppress fast forging, forging rear annealing；
Solution heat treatment is carried out to the forging.
Double vacuum smelting methods are as follows: melting is successively carried out using vacuum induction furnace and consumable electrode vacuum furnace, or successively
Melting is carried out using electric arc furnaces, VOD vacuum refining furnace and vacuum electroslag remelting furnace.
The detailed process forged fastly is suppressed to the steel ingot are as follows:
Remove the epidermis impurity of the steel ingot；
Fast forging, forging ratio >=4, every fire deflection >=20% are suppressed using FM method.
FM method is used to suppress the initial forging temperature forged fastly as 1180 ± 10 DEG C, final forging temperature >=850 ± 10 DEG C,
The solid solubility temperature for carrying out solution heat treatment is 1050 ± 10 DEG C, and the solid solution soaking time of the every mm of thickness of forging is
1.2-1.5 minutes, tempering temperature was 660-700 DEG C, and the tempering insulation time of the every mm of thickness of forging is 2.5-2.8 points
Clock.
To the raw material carry out purified treatment detailed process are as follows: cleaned with 5% dilute sulfuric acid, then with clear water into
Row cleaning, is then dried.
The invention has the advantages that design is scientific and reasonable for each chemical element component in this stainless steel, strictly controlled in manufacturing process
The content of harmful element processed, the mechanical properties such as tensile strength, yield strength and magnetic conductivity, physical property are all satisfied design and want
It asks.
Specific embodiment
Feature of the invention and other correlated characteristics are described in further detail by the following examples, in order to go together
The understanding of industry technical staff:
Embodiment: the present embodiment is specifically related to a kind of manufacturing method of superconduction nuclear fusion 316LN high-performance magnetism-free stainless steel, should
Manufacturing method using advanced vacuum induction melting+vacuum consumable smelting technique, or is adopted by the raw material of the high-purity cleaning of selection
With electric arc furnaces+VOD vacuum refining+vacuum electroslag remelting technique, the mechanical property and physical property for the stainless steel produced are equal
Reach technical requirements.
A kind of superconduction nuclear fusion provided in this embodiment includes following with the manufacturing method of 316LN high-performance magnetism-free stainless steel
Step:
(1) raw material of high-purity cleaning: chromic carbide iron, 0# nickel plate, manganese metal and metal molybdenum filament are selected, with 5% dilute sulfuric acid into
Row cleaning, then the sour juice adhered on raw material is washed off with clear water, then dried；
(2) burner hearth and steel ladle are cleaned, remaining harmful element thereon is removed；
(3) purified raw material are matched to scale, by the raw material Jing Guo purified treatment using vacuum twice
Smelting technology carries out melting, i.e., successively carries out melting using vacuum induction furnace and consumable electrode vacuum furnace, or successively using electric arc furnaces,
VOD vacuum refining furnace and vacuum electroslag remelting furnace (gas shield electroslag remelting) carry out melting, there is strict control in smelting process
Evil element, so that Pb+Sn+Sb+As+Bi≤0.05%, S, P are low as far as possible, so that high-quality steel ingot is obtained, each component quality of steel ingot
Percentage is as follows: 0.025≤C≤0.028,0.40≤Si≤0.60,1.70≤Mn≤1.85, S≤0.005, P≤0.005,
17.0≤Cr≤17.4,12.5≤Ni≤13.2,2.5≤Mo≤2.75,0.15≤N≤0.17, B≤0.03, Co≤0.10, Nb
≤ 0.05, remaining is Fe；Strict control harmful element makes Pb+Sn+Sb+As+Bi≤0.05%, and each component is as shown in table 1 below:
Table 1:
(4) steel ingot of acquisition is carried out to rough turn, removal epidermis impurity.
(5) use FM method, suppress fast forging, initial forging temperature is 1180 ± 10 DEG C, final forging temperature then >=850 ± 10 DEG C, forging
Than >=4, every fire deflection >=20%.
(6) forging rear annealing is handled, and annealing temperature is 730-750 DEG C ± 10 DEG C, and the air cooling time of the every mm of thickness of forging is
2.5 minute.
(7) solution heat treatment is carried out to forging, solid solubility temperature is 1050 ± 10 DEG C, and the solid solution of the every mm of thickness of forging is kept the temperature
Time is 1.2-1.5 minutes, air-cooled；Water quenching is quickly cooled down, and tempering temperature is 660-700 DEG C ± 10 DEG C, the every mm of thickness of forging
Tempering insulation time be 2.5-2.8 minutes, it is air-cooled.
(8) performance detection: the superconduction nuclear fusion high-performance magnetism-free stainless steel of acquisition is tested for the property, test result is such as
Shown in the following table 2:
Table 2:
Tensile strength, the yield strength, elongation percentage, Young mould of the stainless steel manufactured it can be seen from upper table 2 using this law
The mechanical properties such as amount, fracture toughness and magnetic conductivity and physical performance index are all satisfied the requirement of superconduction nuclear fusion application.
In order to further verify the proportion relation between each chemical constituent to the shadow of the performance indexes of stainless steel finished product
It rings, present embodiments provides five groups of samples, the chemical constituent of each group sample is as shown in table 3 below:
Table 3:
Performance detection is continued to above-mentioned five groups of samples, the testing result of properties is as shown in table 4 below:
Table 4:
It can be seen from upper table 4 when the proportion of chemical element each in stainless steel requires lower limit lower than technical standard, sample resists
Requirement is not satisfied in the mechanical properties such as tensile strength, yield strength, elongation percentage and physical performance index；And matching when each chemical element
When than in technical standard, the performance indicator of sample is all satisfied technical requirements, but when the proportion of each chemical element is wanted higher than standard
When seeking the upper limit, the performance indicator of sample is unsatisfactory for technical requirements again.
The beneficial effect of the present embodiment is: design is scientific and reasonable for each chemical element component in this stainless steel, in manufacturing process
The content of strict control harmful element, the mechanical properties such as tensile strength, yield strength and magnetic conductivity, physical property, which are all satisfied, to be set
Meter requires.
Claims (6)
1. a kind of manufacturing method of superconduction nuclear fusion 316LN high-performance magnetism-free stainless steel, it is characterised in that the manufacturing method
The following steps are included:
Chromic carbide iron, 0# nickel plate, manganese metal and metal molybdenum filament is selected as raw material and to carry out purified treatment；
So that the raw material after purified treatment obtain the steel of following mass percent according to regulation ratio and regulation technique
Ingot: 0.025≤C≤0.028,0.40≤Si≤0.60,1.70≤Mn≤1.85, S≤0.005, P≤0.005,17.0≤Cr≤
17.4,12.5≤Ni≤13.2,2.5≤Mo≤2.75,0.15≤N≤0.17, B≤0.03, Co≤0.10, Nb≤0.05,
Remaining is Fe；The regulated proportion refers to that the proportion of each raw material, the regulation technique refer to that the raw material use
The process conditions of double vacuum smelting methods；
The steel ingot is carried out to suppress fast forging, forging rear annealing；
Solution heat treatment is carried out to the forging.
2. a kind of manufacturing method of superconduction nuclear fusion 316LN high-performance magnetism-free stainless steel according to claim 1, special
Sign is double vacuum smelting methods are as follows: successively carries out melting using vacuum induction furnace and consumable electrode vacuum furnace, or successively adopts
Melting is carried out with electric arc furnaces, VOD vacuum refining furnace and vacuum electroslag remelting furnace.
3. a kind of manufacturing method of superconduction nuclear fusion 316LN high-performance magnetism-free stainless steel according to claim 1, special
Sign is to be suppressed the detailed process forged fastly to the steel ingot are as follows:
Remove the epidermis impurity of the steel ingot；
Fast forging, forging ratio >=4, every fire deflection >=20% are suppressed using FM method.
4. a kind of manufacturing method of superconduction nuclear fusion 316LN high-performance magnetism-free stainless steel according to claim 1, special
Sign is to use FM method to suppress the initial forging temperature forged fastly as 1180 ± 10 DEG C, final forging temperature >=850 ± 10 DEG C.
5. a kind of manufacturing method of superconduction nuclear fusion 316LN high-performance magnetism-free stainless steel according to claim 1, special
The solid solubility temperature that sign is to carry out solution heat treatment is 1050 ± 10 DEG C, and the solid solution soaking time of the every mm of thickness of forging is
1.2-1.5 minutes, tempering temperature was 660-700 DEG C, and the tempering insulation time of the every mm of thickness of forging is 2.5-2.8 points
Clock.
6. a kind of manufacturing method of superconduction nuclear fusion 316LN high-performance magnetism-free stainless steel according to claim 1, special
Sign is to carry out the raw material detailed process of purified treatment are as follows: is cleaned with 5% dilute sulfuric acid, then is carried out with clear water
Cleaning, is then dried.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114561527A (en) * | 2022-02-24 | 2022-05-31 | 上海交通大学 | Active control method for grain size of solution treatment of 316H steel forging |
| CN114645117A (en) * | 2022-03-21 | 2022-06-21 | 河南中原特钢装备制造有限公司 | Heat treatment process for 17-4PH material after forging through nitrogen-controlling alloying |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59104455A (en) * | 1982-12-03 | 1984-06-16 | Nippon Steel Corp | Tenacious steel for ultra-low temperature excellent in anti-rust property |
| CN103667958A (en) * | 2013-12-17 | 2014-03-26 | 西宁特殊钢股份有限公司 | Steel for second last stage long blade of ultra-supercritical steam turbine generator set and smelting method of steel |
| CN104174796A (en) * | 2014-08-08 | 2014-12-03 | 东北大学 | Manufacturing method of stainless steel large forging for thermonuclear fusion reactor |
| CN104294171A (en) * | 2014-10-23 | 2015-01-21 | 江浦不锈钢制造有限公司 | Preparation method for austenitic stainless steel used for 316LN nuclear power |
-
2019
- 2019-02-01 CN CN201910103258.7A patent/CN110029289A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59104455A (en) * | 1982-12-03 | 1984-06-16 | Nippon Steel Corp | Tenacious steel for ultra-low temperature excellent in anti-rust property |
| CN103667958A (en) * | 2013-12-17 | 2014-03-26 | 西宁特殊钢股份有限公司 | Steel for second last stage long blade of ultra-supercritical steam turbine generator set and smelting method of steel |
| CN104174796A (en) * | 2014-08-08 | 2014-12-03 | 东北大学 | Manufacturing method of stainless steel large forging for thermonuclear fusion reactor |
| CN104294171A (en) * | 2014-10-23 | 2015-01-21 | 江浦不锈钢制造有限公司 | Preparation method for austenitic stainless steel used for 316LN nuclear power |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114561527A (en) * | 2022-02-24 | 2022-05-31 | 上海交通大学 | Active control method for grain size of solution treatment of 316H steel forging |
| CN114645117A (en) * | 2022-03-21 | 2022-06-21 | 河南中原特钢装备制造有限公司 | Heat treatment process for 17-4PH material after forging through nitrogen-controlling alloying |
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Application publication date: 20190719 |