CN101333631A - Austenitic stainless steel cladding tube and preparation process thereof - Google Patents
Austenitic stainless steel cladding tube and preparation process thereof Download PDFInfo
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- CN101333631A CN101333631A CNA2008101352407A CN200810135240A CN101333631A CN 101333631 A CN101333631 A CN 101333631A CN A2008101352407 A CNA2008101352407 A CN A2008101352407A CN 200810135240 A CN200810135240 A CN 200810135240A CN 101333631 A CN101333631 A CN 101333631A
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- 229910000963 austenitic stainless steel Inorganic materials 0.000 title claims abstract description 11
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 238000005253 cladding Methods 0.000 title abstract description 5
- 238000005482 strain hardening Methods 0.000 claims abstract description 12
- 238000003723 Smelting Methods 0.000 claims abstract description 11
- 238000000137 annealing Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052796 boron Inorganic materials 0.000 claims abstract description 4
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 4
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 4
- 239000001257 hydrogen Substances 0.000 claims abstract description 4
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims abstract description 4
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 3
- 238000005516 engineering process Methods 0.000 claims description 12
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 241001062472 Stokellia anisodon Species 0.000 claims description 3
- VVTSZOCINPYFDP-UHFFFAOYSA-N [O].[Ar] Chemical compound [O].[Ar] VVTSZOCINPYFDP-UHFFFAOYSA-N 0.000 claims description 3
- 238000005097 cold rolling Methods 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 235000016936 Dendrocalamus strictus Nutrition 0.000 claims description 2
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 claims description 2
- 238000010313 vacuum arc remelting Methods 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 5
- 239000010935 stainless steel Substances 0.000 abstract description 5
- 238000010297 mechanical methods and process Methods 0.000 abstract 1
- 238000005498 polishing Methods 0.000 abstract 1
- 239000004615 ingredient Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical group B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910052580 B4C Inorganic materials 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 206010039509 Scab Diseases 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses an austenitic stainless steel cladding tube for a sodium-cooled fast reactor and a preparation method thereof. The stainless steel cladding tube comprises the following components in parts by weight: 0.04 to 0.08 percent of C; less than or equal to 0.75 percent of Si; p is less than or equal to 0.02 percent; s is less than or equal to 0.02 percent; 1.5 to 2.0 percent of Mn; 11.0% -14.0% of Ni; 16.0 to 18.0 percent of Cr; 2.0 to 3.0 percent of Mo; 0.3 to 0.5 percent of Ti; less than or equal to 0.1 percent of Co; less than or equal to 0.002 percent of B; n is less than or equal to 0.035%; the balance being Fe. Double smelting is adopted during smelting, and addition of rare earth elements is forbidden; hydrogen protection or vacuum bright annealing treatment is adopted during hot processing; the cold working process prohibits the use of a drawing process of empty drawing, and prohibits the mechanical method from polishing the surface of the finished pipe. The stainless steel cladding tube manufactured by the process meets the requirement of the sodium-cooled fast reactor core assembly.
Description
Technical field
The invention belongs to the alloy technology field, be specifically related to the austenitic stainless steel involucrum pipe and the preparation technology thereof of the norbide cartridge element rod that a kind of sodium-cooled fast reactor uses.
Background technology
Sodium-cooled fast reactor norbide cartridge element rod works in 350 ℃～550 ℃ high-temperature sodium media environments, and bears dosage up to the 50dpa fast neutron irradiated, and the cartridge rod is an aeration type.The involucrum pipe of this cartridge rod (as control rod and shielding rod) is the thin-walled austenitic stainless steel pipe (external diameter is 10～20mm, and wall thickness 0.5～1mm, cold-working degree are 15～20%) of cold working state, and the outside contacts with high-temperature sodium, built-in nuclear level boron carbide core.Therefore, this can material must have good consistency with sodium and norbide under high temperature and high fast neutron flux irradiation, good erosion resistance and anti-void swelling were arranged in the phase in longevity, the good high-temperature mechanical property requires it to have strict dimensional precision and high surface quality in addition.For produce such involucrum pipe must from smelting, hot-work, cold working, and aspect strictness such as check controlled.
Summary of the invention
(1) goal of the invention
The present invention be directed to existing stainless-steel thin-wall pipe and can not satisfy the needs of fast reactor element rod, a kind of new Stainless Steel Cladding and preparation technology thereof are provided.
(2) technical scheme
For achieving the above object, the invention provides following technical scheme.
A kind of component and weight proportion of austenitic stainless steel involucrum pipe are: 0.04%～0.08% C; ≤ 0.75% Si; ≤ 0.02% P; ≤ 0.02% S; 1.5%～2.0% Mn; 11.0%～14.0% Ni; 16.0%～18.0% Cr; 2.0%～3.0% Mo; 0.3%～0.5% Ti; ≤ 0.1% Co; ≤ 0.002% B; ≤ 0.035% N; All the other are Fe.
The control of this austenitic stainless steel involucrum is equipped with technology and comprises the steps: to smelt; Hot-work; Cold-drawn or cold rolling; Annealing; Aligning; Clean; Packing etc.Key is that dual smelting is adopted in described smelting, is vacuum induction melting or the melting of argon oxygen stove for the first time, is consumable electrode vacuum arc remelting or esr for the second time; Annealing process after the described hot-work adopts hydrogen shield or vacuum clean annealing to handle; The cold-working degree is restricted to 15～20% during described last one cold working, no longer carries out solution treatment after the processing.
The resulting product of this technical scheme is determined following characteristic.
1. chemical ingredients
Chemical ingredients meets the regulation of table 1.
Table 1 chemical ingredients
| Element | C | Si | P | S | Mn | Ni | Cr | Mo | Ti | Co | B | N | Fe |
| Content (wt.%) | 0.04～ 0.08 | ≤0.75 | ≤0.02 | ≤0.02 | 1.5～ 2.0 | 11.0～ 14.0 | 16.0～ 18.0 | 2.0～ 3.0 | 0.3～ 0.5 | ≤0.1 | ≤0.002 | ≤0.035 | All the other |
2. tolerance
1) external diameter: ± 0.05 (mm), wall thickness: ± 0.06 (mm)
2) external diameter is consistent with the wall thickness tolerance direction.
3) linearity≤1.0mm/m
4) circularity is within 1/2nd diameter tolerance zone.
3. mechanical property
The mechanical property of tubing under room temperature and 540 ℃ meets the regulation of table 2
Table 2 room temperature and pyritous mechanical property
| Room temperature | 540℃ | |
| Tensile strength sigma b(MPa) | 760~860 | 515~690 |
| Yield strength σ 0.2(MPa) | 550~760 | 415~585 |
| Unit elongation δ 5(％) | ≥15 | ≥5 |
4. metallographic structure
Grain fineness number is narrower than 6 grades (having reached 8～9 grades); After the solution treatment before final cold working: no α phase, to observe at 500 * microscopically, carbides-free on the crystal boundary does not have " σ " and exists mutually.
All kinds of non-metallic inclusions satisfy table 3 regulation.
All kinds of non-metallic inclusions of table 3 satisfy
| Type | A | B | C | D | TiN |
| Rank (disperseing/concentrate) | 0.5/0. 5 | 0.5/0. 5 | 0.5/0. 5 | 0.5/0. 5 | 2.0 |
5. processing performance
Enlarging rate: 21%; Flattening ratio: H=2.6.
6. corrosion resistance
The Huey test of carrying out after one solution treatment in the end, no intergranular corrosion tendency.
7) UT (Ultrasonic Testing)
To the 100% UT (Ultrasonic Testing) inspection that tubing carries out, show that surfaces externally and internally does not have the defective that is above standard and hinders.The standard wound is of a size of 0.05 * 0.1 * 3.0 (mm) (dark * wide * long).
8. surface quality
The tubing surfaces externally and internally do not have macroscopic oxide skin, chip, crackle, folding, absciss layer, roll hole, scuffing, defective such as abrade, scab, production tube outside surface smooth finish Ra≤0.8 μ m, sample hose internal surface smooth finish Ra≤1.6 μ m.
(3) beneficial effect
Technical scheme provided by the present invention uses pure metal to prepare burden, and does not allow to use steel scrap to be raw material, and the high chemical ingredients requirement of material is satisfied in dual melting.In cold worked each stage, adopt clean annealing to guarantee the dissolving of carbide, and reach good tube surfaces quality, guaranteed the tolerance of dimension of product.
Embodiment
Below in conjunction with embodiment technical scheme of the present invention is further elaborated.
Embodiment 1
Use technical scheme provided by the present invention to prepare the element rod involucrum of sodium-cooled fast reactor boron carbide shielding assembly, be of a size of φ 19.2 * 1 (mm), weight is 700kg.
Concrete preparation process is as follows:
(1) according to following component and weight proportion, and utilizes vacuum induction melting furnace and cold-mo(u)ld furnace to carry out molten steel respectively and smelt: 0.04%～0.08% C; ≤ 0.75% Si; ≤ 0.02% P; ≤ 0.02% S; 1.5%～2.0% Mn; 11.0%～14.0% Ni; 16.0%～18.0% Cr; 2.0%～3.0% Mo; 0.3%～0.5% Ti; ≤ 0.1% Co; ≤ 0.002% B; ≤ 0.035% N; All the other are Fe.In the smelting process, use pure metal to prepare burden, and forbid adding rare earth element.Connect the bundle machine with excellent wire rod after smelting and carry out cogging, make Stainless Steel Disc unit blank.
(2) hot-work.The heat treating method of selecting will guarantee the dissolving of carbide, reaches good tube surfaces quality and tolerance of dimension.Present embodiment adopts hydrogen shield or vacuum clean annealing to handle.
(3) cold-drawn or cold rolling.The cold working process bans use of the draw technology of empty sinking, forbids with mechanical means the finished product tube surfaces being carried out polished finish.
(4) annealing.
(5) aligning.
(6) clean.
(7) packing.
Prepared involucrum external diameter of pipe is φ 19.2 ± 0.07 (mm), and wall thickness is 1 ± 0.08 (mm), and external diameter is consistent with the wall thickness tolerance direction, linearity≤1.0mm/m, and circularity is within 1/2nd diameter tolerance zone.The cold working degree of final condition of delivery is 17～20%.
Embodiment 2
Proportioning is with embodiment 1.Its difference is that when smelting, the melting of argon oxygen stove is an esr for the second time for the first time.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (4)
1. the component of an austenitic stainless steel involucrum pipe and weight proportion are: 0.04%～0.08% C; ≤ 0.75% Si; ≤ 0.02% P; ≤ 0.02% S; 1.5%～2.0% Mn; 11.0%～14.0% Ni; 16.0%～18.0% Cr; 2.0%～3.0% Mo; 0.3%～0.5% Ti; ≤ 0.1% Co; ≤ 0.002% B; ≤ 0.035% N; All the other are Fe.
2. the technology of the austenitic stainless steel involucrum pipe of the described component of preparation claim 1 comprises the steps: to smelt; Hot-work; Cold-drawn or cold rolling; Annealing; Aligning; Clean; Packing etc., it is characterized in that: dual smelting is adopted in described smelting, is vacuum induction melting or the melting of argon oxygen stove for the first time, is consumable electrode vacuum arc remelting or esr for the second time; Annealing process after the described hot-work adopts hydrogen shield or vacuum clean annealing to handle; The cold-working degree is restricted to 15～20% during described last one cold working, no longer carries out solution treatment after the processing.
3. the technology of austenitic stainless steel involucrum pipe according to claim 2 is characterized in that: forbid adding rare earth element in smelting process.
4. the technology of austenitic stainless steel involucrum pipe according to claim 2 is characterized in that: the cold working process bans use of the draw technology of empty sinking, forbids with mechanical means the finished product tube surfaces being carried out polished finish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101352407A CN101333631B (en) | 2008-08-06 | 2008-08-06 | Austenitic stainless steel cladding tube and preparation process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101352407A CN101333631B (en) | 2008-08-06 | 2008-08-06 | Austenitic stainless steel cladding tube and preparation process thereof |
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| CN101333631A true CN101333631A (en) | 2008-12-31 |
| CN101333631B CN101333631B (en) | 2010-11-17 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985678A (en) * | 2010-12-03 | 2011-03-16 | 西安诺博尔稀贵金属材料有限公司 | Method for preparing austenitic stainless steel tube blank for nuclear power |
| CN105112811A (en) * | 2015-09-07 | 2015-12-02 | 中国科学院合肥物质科学研究院 | Austenitic stainless steel jacketing pipe for lead-bismuth fast reactor and preparation method of austenitic stainless steel jacketing pipe |
| CN105935861A (en) * | 2016-05-26 | 2016-09-14 | 沈阳科金特种材料有限公司 | Preparing method for high-strength plastic austenitic stainless steel cap screw forging for nuclear power |
| CN108160743A (en) * | 2017-12-19 | 2018-06-15 | 浙江久立特材科技股份有限公司 | A kind of fuel Stainless Steel Cladding manufacturing process |
| CN109013744A (en) * | 2018-08-08 | 2018-12-18 | 中国原子能科学研究院 | A kind of manufacturing method of high silicon titanium-containing austenitic stainless steel material cladding tubes |
| CN109097678A (en) * | 2018-08-08 | 2018-12-28 | 中国原子能科学研究院 | A kind of manufacturing method of high silicon titanium-containing austenitic stainless steel material outer tube |
| CN110846595A (en) * | 2019-11-14 | 2020-02-28 | 深圳市特发信息光电技术有限公司 | Stainless steel strip, method and apparatus for manufacturing the same, and method of forming microtube |
| CN111850403A (en) * | 2020-07-09 | 2020-10-30 | 江苏银环精密钢管有限公司 | Stainless steel cladding tube for lead alloy liquid metal cooling fast reactor and manufacturing method |
| CN112813244A (en) * | 2020-12-30 | 2021-05-18 | 上海久砾不锈钢管有限公司 | Surface treatment method of stainless steel pipe and application thereof |
| CN113774279A (en) * | 2021-08-20 | 2021-12-10 | 中国原子能科学研究院 | Nuclear reactor alloy material, preparation method, component and welding method thereof |
| CN114535345A (en) * | 2022-01-25 | 2022-05-27 | 南京沃尔德特钢有限公司 | Method for manufacturing oxidation-resistant high-strength duplex stainless steel pipe |
| CN115584444A (en) * | 2022-10-17 | 2023-01-10 | 江苏图南合金股份有限公司 | 321 type heat-resistant stainless steel precision thin-walled tube and manufacturing method thereof |
-
2008
- 2008-08-06 CN CN2008101352407A patent/CN101333631B/en active Active
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101985678A (en) * | 2010-12-03 | 2011-03-16 | 西安诺博尔稀贵金属材料有限公司 | Method for preparing austenitic stainless steel tube blank for nuclear power |
| CN101985678B (en) * | 2010-12-03 | 2012-05-23 | 西安诺博尔稀贵金属材料有限公司 | Method for preparing austenitic stainless steel tube blank for nuclear power |
| CN105112811A (en) * | 2015-09-07 | 2015-12-02 | 中国科学院合肥物质科学研究院 | Austenitic stainless steel jacketing pipe for lead-bismuth fast reactor and preparation method of austenitic stainless steel jacketing pipe |
| CN105112811B (en) * | 2015-09-07 | 2017-03-22 | 中国科学院合肥物质科学研究院 | Austenitic stainless steel jacketing pipe for lead-bismuth fast reactor and preparation method of austenitic stainless steel jacketing pipe |
| CN105935861A (en) * | 2016-05-26 | 2016-09-14 | 沈阳科金特种材料有限公司 | Preparing method for high-strength plastic austenitic stainless steel cap screw forging for nuclear power |
| CN105935861B (en) * | 2016-05-26 | 2018-01-23 | 沈阳科金特种材料有限公司 | A kind of preparation method of nuclear power high-strength plasticity austenitic stainless steel cap screw forging |
| CN108160743A (en) * | 2017-12-19 | 2018-06-15 | 浙江久立特材科技股份有限公司 | A kind of fuel Stainless Steel Cladding manufacturing process |
| CN109097678A (en) * | 2018-08-08 | 2018-12-28 | 中国原子能科学研究院 | A kind of manufacturing method of high silicon titanium-containing austenitic stainless steel material outer tube |
| CN109013744A (en) * | 2018-08-08 | 2018-12-18 | 中国原子能科学研究院 | A kind of manufacturing method of high silicon titanium-containing austenitic stainless steel material cladding tubes |
| CN110846595A (en) * | 2019-11-14 | 2020-02-28 | 深圳市特发信息光电技术有限公司 | Stainless steel strip, method and apparatus for manufacturing the same, and method of forming microtube |
| CN111850403A (en) * | 2020-07-09 | 2020-10-30 | 江苏银环精密钢管有限公司 | Stainless steel cladding tube for lead alloy liquid metal cooling fast reactor and manufacturing method |
| CN111850403B (en) * | 2020-07-09 | 2021-12-07 | 江苏银环精密钢管有限公司 | Stainless steel cladding tube for lead alloy liquid metal cooling fast reactor and manufacturing method |
| CN112813244A (en) * | 2020-12-30 | 2021-05-18 | 上海久砾不锈钢管有限公司 | Surface treatment method of stainless steel pipe and application thereof |
| CN113774279A (en) * | 2021-08-20 | 2021-12-10 | 中国原子能科学研究院 | Nuclear reactor alloy material, preparation method, component and welding method thereof |
| CN113774279B (en) * | 2021-08-20 | 2022-07-01 | 中国原子能科学研究院 | Nuclear reactor alloy material, preparation method, component and welding method thereof |
| CN114535345A (en) * | 2022-01-25 | 2022-05-27 | 南京沃尔德特钢有限公司 | Method for manufacturing oxidation-resistant high-strength duplex stainless steel pipe |
| CN115584444A (en) * | 2022-10-17 | 2023-01-10 | 江苏图南合金股份有限公司 | 321 type heat-resistant stainless steel precision thin-walled tube and manufacturing method thereof |
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| CN101333631B (en) | 2010-11-17 |
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