CN108368577A - The petroleum tank steel and petroleum tank of excellent corrosion resistance - Google Patents
The petroleum tank steel and petroleum tank of excellent corrosion resistance Download PDFInfo
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- CN108368577A CN108368577A CN201680071895.5A CN201680071895A CN108368577A CN 108368577 A CN108368577 A CN 108368577A CN 201680071895 A CN201680071895 A CN 201680071895A CN 108368577 A CN108368577 A CN 108368577A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 126
- 239000010959 steel Substances 0.000 title claims abstract description 126
- 230000007797 corrosion Effects 0.000 title claims abstract description 122
- 238000005260 corrosion Methods 0.000 title claims abstract description 122
- 239000003208 petroleum Substances 0.000 title claims abstract description 42
- 229910052718 tin Inorganic materials 0.000 claims abstract description 24
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 17
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 11
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 229910052787 antimony Inorganic materials 0.000 claims description 9
- 239000003921 oil Substances 0.000 abstract description 28
- 239000002199 base oil Substances 0.000 abstract description 7
- 229910052748 manganese Inorganic materials 0.000 abstract description 3
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 3
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 70
- 230000000694 effects Effects 0.000 description 23
- 238000007792 addition Methods 0.000 description 16
- 238000009833 condensation Methods 0.000 description 15
- 230000005494 condensation Effects 0.000 description 15
- 239000010779 crude oil Substances 0.000 description 15
- 238000001816 cooling Methods 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000002253 acid Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 238000005096 rolling process Methods 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 238000005098 hot rolling Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 238000006722 reduction reaction Methods 0.000 description 5
- 229910052719 titanium Inorganic materials 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 239000011701 zinc Substances 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 230000009931 harmful effect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 229910052758 niobium Inorganic materials 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 229910052720 vanadium Inorganic materials 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 244000137852 Petrea volubilis Species 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 235000019580 granularity Nutrition 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- NDKWCCLKSWNDBG-UHFFFAOYSA-N zinc;dioxido(dioxo)chromium Chemical compound [Zn+2].[O-][Cr]([O-])(=O)=O NDKWCCLKSWNDBG-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/02—Wall construction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/22—Safety features
-
- 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
-
- 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
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
-
- 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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- 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
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
-
- 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
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- 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
-
- 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
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
Abstract
Contain C in terms of quality % at being grouped by make steel：0.03~0.18%, Si：0.03~1.50%, Mn：0.1~2.0%, P：0.025% or less, S：0.010% or less, Al：0.015~0.049%, N：0.008% or less, Co：0.005~0.5% and Sn：0.005~0.3%, remainder is made of what Fe and inevitable impurity were constituted, and it is the range for meeting following formula (1) to make the dislocation density α of steel, and the excellent petroleum tank steel of both the resistance to whole face corrosivity of the top plates of petroleum tanks such as oil carrier oil groove portion and the resistance to local corrosion of bottom plate of petroleum tank are made.α(/m2)≤{1017× [%Co] × [%Sn] }/([%Al] -0.01) ... (1), wherein [%M] is the content (quality %) of the M element in steel.
Description
Technical field
The present invention relates to the oil groove for the crude oil tanker for forming welded steel, for convey or store crude oil tank (with
Under, be referred to as " petroleum tank "), in particular to alleviate the top of petroleum tank, side of sidewall portion generation whole face corrosion and
The petroleum tank steel for the local corrosion that the bottom of petroleum tank generates and the petroleum tank being made of the steel.
It should be noted that the petroleum tank of present invention steel include steel plate, sheet metal and shaped steel.
Background technology
Steel can produce used in the inner surface, particularly the upper deck back side and side wall upper part of the known petroleum tank in oil carrier
Raw whole face corrosion.The reason of as causing the whole face to be corroded, following reason etc. can be enumerated.
(1) repeated in the moisture condensation of surface of steel plate and drying (dry and wet) caused by temperature difference round the clock,
(2) inert gas in petroleum tank is sealing into for explosion-proof (with O2About 4vol%, CO2About 13vol%, SO2
About 0.01vol%, remainder N2For represent composition boiler or engine exhaust gas etc.) in O2、CO2、SO2To dew condensation water
Dissolve in,
(3) H to volatilize from crude oil2The corrosive gas such as S are dissolved in dew condensation water,
(4) residual of the seawater used in the cleaning of petroleum tank.
These reasons can also be peeped from the following contents to be known：During the dock of the real ship usually carried out at every 2.5 years checks,
Sulfate ion, chloride ion are detected in the dew condensation water of highly acid.
If in addition, the iron rust generated by corrosion is made H as catalyst2S is aoxidized, then solid S is generated with stratiform in iron
In rust, but these corrosion products are easily peeled off and fall off, and are deposited in the bottom of petroleum tank.Therefore, present situation is in dock inspection
In, a large amount of expenses are spent to carry out the repairing on tank top, the recycling of the deposit of pot bottom.
On the other hand, for the steel of the bottom plate of petroleum tank as oil carrier etc., the corruption by crude oil itself was thought in the past
Inhibiting effect, the effect of corrosion inhibition for the protective coating (oil reservoir) from crude oil for being formed in petroleum tank inner surface are lost without producing
Raw corrosion.However, clear by nearest research, the steel of tank bottom generate the local corrosion (spot corrosion) of bowl-type.
The reason of as such local corrosion is caused, following reason etc. can be enumerated.
(1) it is dissolved in high concentration using sodium chloride as the presence of the cohesion water of the salt of representative,
(2) disengaging of the oil reservoir caused by excessively cleaning,
(3) high concentration of sulfide contained in crude oil,
(4) the explosion-proof O in inert gas of dew condensation water is dissolved in2、CO2、SO2Deng high concentration.
In fact, when the dock of real ship checks, the water being stranded in petroleum tank is analyzed, as a result detects height
The chloride ion and sulfate ion of concentration.
But it is to implement weight in steel surface to prevent the most efficient method of whole face burn into local corrosion as described above
Application separates steel from corrosive environment.However, not only its spreading area is huge for the painting operation of petroleum tank, but also due to applying
The deterioration of film needs to be coated with again once for about 10 years, therefore, is checking, is generating huge expense in application.In turn, it is indicated that weight
The impaired part of the film of application instead can promoting corrosion under the corrosive environment of petroleum tank.
For etching problem as described above, it is proposed that it is several improve steel itself corrosion resistances and improve petroleum tank
The technology of corrosion resistance under corrosive environment.
For example, in patent document 1, even if to provide unreal application dress, electric protection, it is more to be exposed to the constant temperature to contain salt
Also be improved under wet environment, containing the corrosion resistance in the environment of sulphur content and toughness also excellent steel for ship is mesh
, a kind of technology being related to steel for ship is disclosed, which contains C：0.01~0.30%, Si：0.01~
2.0%, Mn：0.01~2.0%, Al：0.005~0.10%, Bi：0.0005~0.40%, P：0.003~0.050%, it is remaining
Part is Fe and inevitable impurity, and meets following formula (1) and (2).
[P] × 7+ [Bi] ＜ 0.50% ... (1)
0.050≤[P]/[Bi]≤5.0…(2)
In addition, in patent document 2, with provide a kind of tank upper deck of crude oil tanker with or the ship storehouse of bulk ship be with steel
Purpose, even if the steel are in the feelings for being exposed to the harsh corrosive environment there are sulphur-containing substances such as sulphur, oxysulfide, sulfide
Under condition, it is to be disclosed more than common steel for ship is same also to embody excellent corrosion resistance and weldability, hot-workability
A kind of technology of steel, which is characterized in that the steel meet C：0.01~0.30%, Si：0.20~1.0%, Mn：0.50~
1.60%, P：0.005~0.040%, S：0.005~0.020%, Al：0.050~0.100%, Cu：0.20~1.0%, Ni：
0.03% or less (including 0%), Cr：0.05~0.30%, Zn：0.001~0.50%, Sn：0.005~0.050% and Ca：
0.0005~0.0050%, remainder is made of Fe and inevitable impurity.
Existing technical literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2007-197763 bulletins
Patent document 2：Japanese Unexamined Patent Publication 2013-028830 bulletins
Invention content
In order to protect the marine environment and make crude oil tanker safely shipping, it is important that be managed so that crude oil is not from original
Tank leakage especially must be prevented from the generation of the through hole caused by corrosion in petroleum tank.Therefore, when every docking in 2.5 years
The corrosion condition of the bottom plate of petroleum tank is investigated, repairing is implemented to the spot corrosion that depth is more than 4mm.
It is more than the point corruption of 4mm as depth is inhibited to cut down the maintenance administration fee of crude oil tanker in view of such present situation
Lose one of the means generated, it is proposed that the scheme of corrosion resisting steel is applied in oil carrier.
However, in the technology described in patent document 1, it is difficult to will be rotten in the part of oil carrier bottom plate and welding point generation
Erosion (spot corrosion) is suppressed to 4mm or less between 2.5 years.That is, in the Investigation On Corrosion of real ship in recent years, distinguish in oil
The pH for the solution inside spot corrosion that floor and weld part generate is 1.0 or less.In general, it is well known that Acidic Liquid
In corrosion of steel speed controlled by hydrogen reduction reaction, corrosion rate becomes larger tremendously while pH is reduced.Therefore, such as
Such spraying brine recorded in the embodiment of above patent document 1 and the compound of neutral region that carries out dry and wet repetition test is followed
In ring test, it cannot be said that fully reflect the corrosive environment in real ship.
In addition, the steel recorded in patent document 2 are unable to get the supression of the whole face corrosion generated in oil carrier top plate
It being capable of satisfactory effect.That is, since the durable years of actual crude oil tanker is 25 years, the design of oil carrier top plate
Corrosion allowance is single side 2mm or so, it is therefore desirable to the corrosion rate of the corrosion resisting steel applied to top plate be 0.08mm/y hereinafter,
But it is only 0.11mm/y or so in the case that corrosion rate is minimum in example described in Patent Document 2.Especially pair
In the longitudinal elements for being welded in oil carrier top plate, since two sides is exposed to the corrosive environment inside oil carrier, it is more than applying to have
It needs to repair when the corrosion resisting steel of the corrosion rate of 0.1mm/y, therefore, the technology recorded in patent document 2 can not it is expected to omit
Application.
The present invention is developed in view of above-mentioned present situation, and its purpose is to provide the top plates of the petroleum tanks such as oil carrier oil groove portion
Both resistance to local corrosions of bottom plate of resistance to whole face corrosivity and petroleum tank excellent petroleum tank steel and by the steel
The petroleum tank that material is constituted.
Currently, further investigation has been repeated in inventors etc. in order to solve the above problems.
Its result obtains following opinion：By by steel at being grouped as, particularly Co and Sn is closely managed in appropriate amount
Range and the dislocation density for closely controlling steel, can significantly mitigate above-mentioned whole face burn into local corrosion.
The present invention is based on above-mentioned opinions.
That is, the purport composition of the present invention is as follows.
1. a kind of petroleum tank steel of excellent corrosion resistance,
Contained in terms of quality %
C：0.03~0.18%,
Si：0.03~1.50%,
Mn：0.1~2.0%,
P：0.025% or less,
S：0.010% or less,
Al：0.015~0.049%,
N：0.008% or less,
Co：0.005~0.5% and
Sn：0.005~0.3%,
Remainder is made of Fe and inevitable impurity, and the dislocation density α of the steel meets following formula (1).
α(/m2)≤{1017× [%Co] × [%Sn] }/([%Al] -0.01) ... (1)
Wherein, [%M] is the content (quality %) of the M element in steel
2. the petroleum tank steel of the excellent corrosion resistance according to above-mentioned 1, wherein the steel in terms of quality % into
One step, which contains, to be selected from
Cu：0.05~0.4%,
Ni：0.005~0.4% and
Sb：It is one kind or two or more in 0.005~0.4%, and the dislocation density β of steel meets following formula (2).
β(/m2)≤{1017× [%Co] × [%Sn]+1015× [%Sn] × ([%Cu]+[%Ni]+3 × [%Sb]) }/
([%Al] -0.01) ... (2)
Wherein, [%M] is the content (quality %) of the M element in steel
3. the petroleum tank steel of the excellent corrosion resistance according to above-mentioned 1 or 2, wherein the steel are with quality %
Meter, which further contains, to be selected from
Cr：0.01~0.2%,
Nb：0.001~0.1%,
Ti：0.001~0.1%,
V：0.002~0.2%,
Mg：0.0002~0.01%,
Ca：0.0002~0.01% and
REM：It is one kind or two or more in 0.0002~0.015%.
4. a kind of petroleum tank is made of the petroleum tank described in above-mentioned any one of 1~3 with steel.
In accordance with the invention it is possible to effectively inhibit the generations such as the tank of the oil groove in crude oil tanker, conveying or storage crude oil
Whole face burn into local corrosion, it is exceedingly useful in industry.
Description of the drawings
Fig. 1 is indicate steel in condensation test { 1017× [%Co] × [%Sn] }/value of ([%Al] -0.01) with
The figure of the relationship of dislocation density.
Fig. 2 is indicate steel in condensation test { 1017× [%Co] × [%Sn]+1015× [%Sn] × ([%Cu]
+ [%Ni]+3 × [%Sb]) } figure of the relationship of/value of ([%Al] -0.01) and dislocation density.
Fig. 3 is indicate steel in acid resistance test { 1017× [%Co] × [%Sn] }/value of ([%Al] -0.01) with
The figure of the relationship of dislocation density.
Fig. 4 is indicate steel in acid resistance test { 1017× [%Co] × [%Sn]+1015× [%Sn] × ([%Cu]
+ [%Ni]+3 × [%Sb]) } figure of the relationship of/value of ([%Al] -0.01) and dislocation density.
Fig. 5 is the figure illustrated to the experimental rig for being used for whole face corrosion test in an embodiment of the present invention.
Fig. 6 is the figure illustrated to the experimental rig for being used for pitting corrosion test in an embodiment of the present invention.
Specific implementation mode
Hereinafter, specifically describing the present invention.
First, to illustrating the petroleum tank steel of the present invention at being grouped as the reasons why being limited to above range.
It should be noted that referring to then quality % unless otherwise specified with ingredient relevant " % " expression.
C：0.03~0.18%
C is that the element for the intensity for improving steel adds in of the invention in order to ensure desired intensity (490~620MPa)
0.03% or more.However, the C that addition is more than 0.18% makes weldability and the toughness of welding heat affected zone reduce.Therefore, C amounts are
0.03~0.18% range.Preferably 0.06~0.16% range.
Si：0.03~1.50%
Si is as deoxidier and the element that adds, and the effective element of intensity to improving steel.Therefore, of the invention
In, add 0.03% or more in order to ensure desired intensity.However, the Si that addition is more than 1.50% makes the toughness of steel reduce.
Therefore, the range that Si amounts are 0.03~1.50%.Preferably 0.05~0.40% range.
Mn：0.1~2.0%
Mn be improve steel intensity element, the present invention in, in order to obtain desired intensity and add 0.1% or more.So
And the Mn that addition is more than 2.0% makes the toughness of steel and weldability reduce.Therefore, the range that Mn amounts are 0.1~2.0%.Preferably
0.80~1.60% range.
P：0.025% or less
P is to make the harmful element that the toughness of steel reduces in cyrystal boundary segregation, it is therefore preferable that reducing as far as possible.If especially
Containing the P for having more than 0.025%, then toughness is greatly reduced.If in addition, containing the P for having more than 0.025%, to resistance in tank oil groove
Corrosivity also results in harmful effect.Therefore, P amounts are 0.025% or less.Preferably 0.015% or less.
S：0.010% or less
S is the starting point to form as the MnS of non-metallic inclusion and become local corrosion, and resistance to local corrosion is made to reduce
Harmful element, it is therefore preferable that reducing as far as possible.If especially leading to resistance to local corrosion containing the S for having more than 0.010%
Significant decrease.Therefore, S amounts are 0.010% or less.Preferably 0.005% or less.
Al：0.015~0.049%
Al is as deoxidier and the element that adds, and 0.015% or more is added in the present invention.However, if addition is more than
0.049% Al, then not only the toughness of steel reduces, but also the aluminum oxide for being formed in steel surface preferentially dissolves and resistance in acid
Corrosivity also reduces, and therefore, the upper limit of Al amounts is 0.049%.
N：0.008% or less
N is the harmful element for making toughness reduce, it is therefore preferable that reducing as far as possible.If especially containing and having more than 0.008%
N, then the reduction of toughness becomes larger, and therefore, the upper limit of N amounts is 0.008%.
Co：0.005~0.5%
Co is entered in rusty scale in corrosion, fine and close rusty scale is formed, to contribute to the local corrosion and whole face of steel
The useful element of the inhibition of corrosion.The effect of the Co by add 0.005% or more by embodies, but addition more than 0.5% when, it is low
Warm toughness reduces.Therefore, the range that Co amounts are 0.005~0.5%.Preferably 0.01~0.4% range, more preferably 0.01
~0.2% range.
Sn：0.005~0.3%
Sn is entered in rusty scale in corrosion, fine and close rusty scale is formed, to contribute to the local corrosion and whole face of steel
The necessary element of the inhibition of corrosion.Especially by Sn and above-mentioned Co and aftermentioned Cu, Ni and Sb and used time, to corrosion resistance
Improve show synergistic.The effect of the Sn by add 0.005% or more by embodies, but addition more than 0.3% when, it is not only low
Warm toughness reduces, and leads to the generation of defect in welding.Therefore, the range that Sn amounts are 0.005~0.3%.Preferably
0.01~0.2% range, more preferably 0.01~0.1% range.
More than, basis is illustrated, but the present invention can also suitably contain following theory in addition to mentioned component
Bright element.
Cu：0.05~0.4%
Cu has the following effects that：The intensity of steel is not only improved, but also is present in the rust generated by the corrosion of steel, is inhibited
Promote the Cl of corrosionThe diffusion of ion, to improve corrosion resistance.The effect of these Cu can not in the addition less than 0.05%
It fully obtains, on the other hand, if adding more than 0.4%, in addition to the improvement effect of corrosion resistance saturation, it is also possible in heat
The problems such as causing face crack when processing.Therefore, the range that Cu amounts are 0.05~0.4%.Preferably 0.06~0.35% model
It encloses.
Ni：0.005~0.4%
Ni has the rust particle miniaturization for making generation and improves the corrosion resistance under naked state and implement to yellow zinc chromate primer paint
The effect of corrosion resistance in the state of epoxy application.Therefore, Ni is added when wanting to further increase corrosion resistance.On
The effect of the Ni stated is embodied by adding 0.005% or more.On the other hand, even if addition is more than its effect of 0.4% Ni
Saturation.Therefore, Ni is preferably added in 0.005~0.4% range.More preferably 0.08~0.35% range.
Sb：0.005~0.4%
Sb has the spot corrosion for not only inhibiting oil carrier oil groove portion bottom plate, but also inhibit the whole face corrosion in oil carrier upper deck portion
Effect.Said effect is embodied by adding 0.005% or more Sb, even if addition, more than 0.4%, effect is also saturated.
Therefore, the range that Sb amounts are 0.005~0.4%.
Cr：0.01~0.2%
Cr makes an addition in the steel that oxide skin state or implement blasting treatment in the state of use, the environment in tank
Under, no special effect is improved to corrosion resistance.However, when will contain Zn priming paint and be coated on steel surface, can be formed with Fe
Centered on Cr, Zn composite oxides and so that Zn is continuously present in surface of steel plate for a long time, thus, it is possible to tremendous improve resistance to
Corrosivity.The effect of above-mentioned Cr especially contains high concentration what is detached with from crude oil oil as the base plate of oil carrier oil groove
Salinity liquid contact part it is notable, by implementing prime treatment containing Zn to the steel of the above-mentioned part containing Cr, and not
Steel containing Cr are compared, and corrosion resistance can be especially improved.The effect of the Cr is insufficient when less than 0.01%, on the other hand,
If more than 0.2%, the toughness of weld part is made to deteriorate.Therefore, the range that Cr amounts are 0.01~0.2%.Preferably 0.05~
0.2% range.
Nb：0.001~0.1%, Ti：0.001~0.1%, V：0.002~0.2%
Nb, Ti and V are the elements for improving steel strength, intensity that can be as needed and suitably select and add.For
Said effect is obtained, preferably Nb, Ti adds 0.002% or more 0.001% or more, V additions respectively.However, if Nb, Ti distinguish
Addition is added more than 0.1%, V more than 0.2%, then toughness reduces, and therefore, Nb, Ti and V are preferably added in above range respectively.
Mg：0.0002~0.01%
There is Mg the toughness for not only facilitating welding heat affected zone to improve, and be present in the rust generated by the corrosion of steel
In and improve the effect of corrosion resistance.The effect of these Mg is unable to fully obtain when additive amount is less than 0.0002%, another party
Face, if addition instead results in the reduction of toughness more than 0.01%, therefore, the range that Mg amounts are 0.0002~0.01%.
Ca：0.0002~0.01%, REM：0.0002~0.015%
Ca and REM is effective to the raising of the toughness of welding heat affected zone, can be added as needed on.Said effect passes through
Add Ca：0.0002% or more, REM：0.0002% or more and obtain, if but addition be more than 0.01% Ca or addition be more than
0.015% REM then instead results in the reduction of toughness, and therefore, Ca and REM are preferably added in above range respectively.
Then, the dislocation density of steel specified in the present invention is illustrated.
The present invention corrosion resisting steel by the way that various corrosion resistance elements are made an addition to steel with specified amount as described above, to
The rusty scale for the steel surface that various corrosion resistance elements are formed under the corrosive environment in oil carrier oil groove portion's bottom plate and top plate concentrates,
Inhibit the diffusion of various corrosion factors and reduces the corrosion rate of steel.
On the other hand, for steel, the formation of the dislocation from its manufacturing process can not be avoided, the dislocation is thermodynamically
It is unstable, therefore, the anode site as dissolved ferric iron under corrosive environment plays a role.It is formed in the surface of corrosion resisting steel
Rusty scale there is protectiveness, have the effect of the corrosion rate of reduction steel, but its function is incomplete, according to the steel under rusty scale
The density of the dislocation on surface and change.That is, being allowed according to the protective degree possessed by the rusty scale of steel surface that is formed in
Steel dislocation density it is different.
Therefore, inventor etc. investigates the protectiveness of rusty scale and the relationship of dislocation density.
As a result, specify in the steel of Co and Sn as corrosion resistance element with specified amount, with less than
When the dislocation density α of the value of the right defined of following formula (1), good corrosion resistant can be obtained under the environment in the tank of crude oil tanker
Corrosion.
α(/m2)≤{1017× [%Co] × [%Sn] }/([%Al] -0.01) ... (1)
Wherein, [%M] is the content (quality %) of the M element in steel
In turn, when specifying the one kind or two or more conduct corrosion resistance element in Cu, Ni and Sb containing specified amount,
By the effect of these corrosion resistance elements, the protectiveness for being formed in the rusty scale on surface further increases, therefore, from corrosion resistance
From the perspective of, the upper limit for the dislocation density allowed can mitigate the value of the right defined to following formula (2).
β(/m2)≤{1017× [%Co] × [%Sn]+1015× [%Sn] × ([%Cu]+[%Ni]+3 × [%Sb]) }/
([%Al] -0.01) ... (2)
Wherein, [%M] is the content (quality %) of the M element in steel
Hereinafter, to being found that the protectiveness of rusty scale and fact of the relationship of dislocation density illustrate.
It will be rolled under conditions of described in table 2 at the steel being grouped as shown in table 1.Thereafter, close for control dislocation
The purpose of degree after assigning prestrain 1%, 3%, 5%, 7% to the test film of a part, takes the ruler of aftermentioned embodiment record
Each 25 of very little corrosion test piece.It should be noted that prestrain is bigger, no matter steel grade, dislocation density more increases.By these test films
Be supplied respectively in described in embodiment the whole face corrosion test (condensation test) for simulating the upper deck back side and simulate oil carrier
The local corrosion resistance test (acid resistance test) of backplane environment.After any experiment is evaluated with the benchmark described in embodiment,
The part for cutting test film measures the dislocation density of steel surface by the method described in embodiment.The result that will be obtained
Remembered together in table 2.
[table 1]
[table 2]
In Fig. 1 and 2, horizontal axis takes { the 10 of each steel17× [%Co] × [%Sn] }/([%Al] -0.01) or { 1017
× [%Co] × [%Sn]+1015× [%Sn] × ([%Cu]+[%Ni]+3 × [%Sb]) }/value of ([%Al] -0.01),
The longitudinal axis marks and draws the dislocation density that each steel are measured.In figure ● indicate in condensation test using the side described in embodiment
The prediction waste behind 25 predicted year when method is the situation of 2mm or less, × the case where representing more than 2mm.
As illustrated in fig. 1 and 2, when specifying that the dislocation density of only steel meets above-mentioned (1) formula or (2) formula, in condensation test
In meet target capabilities.In turn, it specifies that the additive amount of formation effective Sn, Cu, Ni and Sb for becoming rusty to protectiveness more increase, holds
Perhaps the upper limit of dislocation density more increases.
Similarly, the result for the case where Fig. 3 and Fig. 4 is acid resistance test.In figure ● indicate by described in embodiment
The corrosion rate that method is found out is the situation of 1.0mm/y or less, × the case where representing more than 1.0mm/y.
As shown in Figures 3 and 4, when specifying that the dislocation density of only steel meets above-mentioned (1) formula or (2) formula, in acid resistance test
In meet target capabilities.
Then, the preferable production process of the petroleum tank steel of the present invention is illustrated.
The steel for being adjusted to above-mentioned preferred component composition can be used converter, electric furnace, vacuum outgas etc. by the steel of the present invention
Well known refinery practice carries out melting, and steel raw material (blank) is made by continuous casting process or ingot casting-split rolling method method, connects
It, which is reheated, then, hot rolling is carried out, to which steel plate, sheet metal and shaped steel etc. be made.
Here, the relation reheating temperature before hot rolling is preferably 900~1200 DEG C of temperature.If heating temperature is less than 900 DEG C,
Deformation drag is big, it is difficult to hot rolling is carried out, on the other hand, if heating temperature is more than 1200 DEG C, except austenite grain coarsening
Other than causing toughness to reduce, the scale loss also caused by oxidation becomes notable due to yield rate reduces.Preferred heating temperature
The range that degree is 1000~1150 DEG C.
In addition, by hot rolling at desired shape, size steel when, finish rolling end temp be preferably 700 DEG C with
On.When finish rolling end temp is less than 700 DEG C, the deformation drag of steel becomes larger, and rolling load increases, it is difficult to be rolled, or production
The raw stand-by period until rolling temperature as defined in rolling stock reaches, therefore, rolling efficiency reduces.In addition, by big
Width is less than Ar3The temperature of transformation temperature carries out finish rolling, and the dislocation density of steel increases, and leads to the deterioration of corrosion resistance.
The cooling of steel after hot rolling can be air cooling, accelerate the either method in cooling, want to obtain higher
When intensity, acceleration cooling is preferably carried out.It should be noted that when carrying out accelerating cooling, it is 2~80 DEG C/s preferably to make cooling velocity,
It is 650~400 DEG C to make the cooling temperature that stops.When cooling velocity is less than 2 DEG C/s, cooling stopping temperature is more than 650 DEG C, accelerate cooling
Effect it is small, cannot achieve sufficient high intensity, on the other hand, cooling velocity is more than that 80 DEG C/s, cooling stopping temperature being less than
At 400 DEG C, the toughness of obtained steel reduces, or not only the shape of steel generates strain, but also the dislocation density of steel increases
Greatly, corrosion resistance reduces.
Embodiment
Bloom is made in the steel steel vacuum melting stoves melting formed as various composition shown in No.1~33 in table 3,
Or with converter melting and steel blank is made by continuously casting, after they are again heated to 1150 DEG C, with finish rolling shown in table 4
End temp implements hot rolling and plate thickness is made：After the steel plate of 25mm, with water cooling speed：10 DEG C/s is cooled to cold shown in table 4
But stop temperature.
Condensation test and acid resistance test are carried out to the steel plate of obtained No.1~33, evaluate its corrosion resistance.Together
When also measure the dislocation densities of steel.
That is, according to following main points, the whole face corrosion test (condensation test) for simulating the upper deck back side and mould are carried out respectively
The local corrosion resistance test (acid resistance test) of oil carrier backplane environment is intended.
(1) the whole face corrosion test (condensation test) of oil carrier upper deck environment is simulated
In order to evaluate the corrosion resistance of the whole face corrosion to the oil carrier upper deck back side, to the steel plate point of above-mentioned No.1~33
Not from the position of surface 1mm by set experiment during (21 days, 49 days, 77 days, 98 days) total 20 are cut in a manner of 5
The small pieces of the rectangle of width 25mm × length 60mm × thickness 5mm are ground its surface with the sand paper of 600 granularities.Then,
With rubber belt sealing in such a way that the back side and end face are incorrosive, whole face corrosion test is carried out using corrosion testing apparatus shown in fig. 5.
The corrosion testing apparatus is made of corrosion test slot 2 and temperature control panel 3, the implantation temperature in corrosion test slot 2
30 DEG C of water 6 is remained, in addition, being imported by 13vol%CO via importing flue 4 in the water 62, 4vol%O2、
0.01vol%SO2, 0.05vol%H2S, remainder N2The mixed gas of composition, with oversaturated vapor by corrosion test
It is full of in slot 2, reproduces the corrosive environment at the petroleum tank upper deck back side.Then, corrosion test is set at the upper back side of the test flume
Piece 1, for the corrosion test piece 1, assigned repeatedly via the temperature control panel 3 of built-in having heaters and cooling device 21 days, 49
It, 77 days and 98 days with+50 DEG C × 22.5 hours 25 DEG C × 1.5 hours temperature changes for 1 cycle, make the table of test film 1
Face generates dew condensation water, and whole face is caused to be corroded.In Fig. 5,5 indicate the discharge flue from test flume.
After above-mentioned corrosion test, the rust on each test film surface is removed, is found out by testing front and back mass change because corroding institute
The Mass lost of cause is scaled plate thickness decrement by the value.Then, the value during being tested by 4 is by using exponential function
Least square method find out 25 years after prediction waste, in the case that etching extent be 2mm it is below, be evaluated as resistance to whole face corrosivity
Well (zero) it is bad (×) to be evaluated as resistance to whole face corrosivity more than 2mm.
(2) local corrosion test's (acid resistance test) of oil carrier oil groove portion backplane environment is simulated
In order to evaluate the corrosion resistance of the spot corrosion to oil carrier oil groove portion bottom plate, the steel plate of above-mentioned No.1~33 is distinguished
The small pieces that the rectangle of 5 width 25mm × length 60mm × thickness 5mm is cut from the position of surface 1mm, with the sand paper of 600 granularities
To its surface grinding.
Then, it makes and 10%NaCl aqueous solutions is adjusted to Cl ion concentrations with concentrated hydrochloric acid：10%, pH：0.85 experiment
Flexible cord (テ グ ス) is passed through the hole of the 3mm φ on the top for being opened in test film and is hung, carried out to each test film by solution
168 hours corrosion tests are impregnated in the testing liquid of 2L.It should be noted that heating is maintained at 30 DEG C to testing liquid in advance,
Every 24 hours testing liquids more renewed.
The device used in above-mentioned corrosion test is shown in Fig. 6.The corrosion testing apparatus is corrosion test slot 8, thermostat 9
Dual structure device, above-mentioned testing liquid 10 is added in corrosion test slot 8, by test film 7 with flexible cord 11 hang and soak
Stain is wherein.The temperature of testing liquid 10 keeps by adjusting the temperature of the water 12 for being added to thermostat 9.
After above-mentioned corrosion test, after removing is created on the rust on test film surface, front and back of poor quality of experiment is found out, by the difference
It is converted according to total surface area, finds out every 1 year plate thickness decrement (corrosion rate of single side).As a result, by corrosion rate
For the situation of 1.0mm/y or less, to be evaluated as resistance to local corrosion good (zero), and the case where by corrosion rate being more than 1.0mm/y is evaluated
It is bad (×) for resistance to local corrosion.
(3) measurement of the dislocation density of steel
The test film of No.1~33 after having carried out acid resistance test and 98 days condensation tests cuts 20 × 20 respectively ×
The face of the surface sides 1mm of the steel of script is set as aspect of measure by the test film of 5mmt.Using X-ray diffraction measure device, measure
The diffraction maximum in (110), (211) and (220) face of steel, 2 θ of the respective angle of diffraction and half breadth are found out to each test film respectively
βm。
Horizontal axis takes sin θ/λ, the longitudinal axis to take β cos θ/λ, marks and draws the measurement result of above-mentioned each crystal plane.
Wherein, λ indicates X-ray wavelengthβ indicates real diffraction maximum half breadth, according to (3) formula by surveying
Half breadth β m and without strain half breadth β s find out.
It should be noted that as without strain standard sample, using Si powder standard sample (peak position β s by being based on parabolic
The approximate interpolation calculating of line is found out).
β=(β m2- β s2)0.5…(3)
For 3 points above-mentioned of plotting, curve of approximation is drawn by least square method, by its slope as shown in (4) formula
Strain stress is found out, dislocation density ρ is found out by (5) formula, calculates its average value.
β cos θ/λ=0.9/D+2 ε sin θs/λ ... (4)
The ε of ρ=14.42/b2…(5)
Wherein, b is Burgers vector 0.25nm,
D indicates crystallite dimension.
Obtained result is remembered together in table 4.
[table 3]
[table 4]
As shown in table 4, steel plate No.1,2,5~32 for meeting the condition of the present invention are simulating the whole of the upper deck back side
Good corrosion resistance is shown in face corrosion test and the local corrosion test for simulating oil carrier backplane environment.
In contrast, be unsatisfactory for the present invention condition steel plate No.3,4,33 in any corrosion resistance test equal nothing
Method obtains good result.
Symbol description
1,7 corrosion test piece
2,8 corrosion test slot
3 temperature control panels
4 import flue
5 discharge flues
6,12 water
9 thermostats
10 testing liquids
11 flexible cords
Claims (4)
1. a kind of petroleum tank steel of excellent corrosion resistance,
Contained in terms of quality %
C：0.03~0.18%,
Si：0.03~1.50%,
Mn：0.1~2.0%,
P：0.025% or less,
S：0.010% or less,
Al：0.015~0.049%,
N：0.008% or less,
Co：0.005~0.5% and
Sn：0.005~0.3%,
Remainder is made of Fe and inevitable impurity, and the dislocation density α of the steel meets following formula (1),
α(/m2)≤{1017× [%Co] × [%Sn] }/([%Al] -0.01) ... (1),
Wherein, [%M] is the content of the M element in steel, and unit is quality %.
2. the petroleum tank steel of excellent corrosion resistance according to claim 1, wherein the steel in terms of quality % into
One step, which contains, to be selected from
Cu：0.05~0.4%,
Ni：0.005~0.4% and
Sb：It is one kind or two or more in 0.005~0.4%, and the dislocation density β of steel meets following formula (2),
β(/m2)≤{1017× [%Co] × [%Sn]+1015× [%Sn] × ([%Cu]+[%Ni]+3 × [%Sb]) }/([%
Al] -0.01) ... (2),
Wherein, [%M] is the content of the M element in steel, and unit is quality %.
3. the petroleum tank steel of excellent corrosion resistance according to claim 1 or 2, wherein the steel are with quality %
Meter, which further contains, to be selected from
Cr：0.01~0.2%,
Nb：0.001~0.1%,
Ti：0.001~0.1%,
V：0.002~0.2%,
Mg：0.0002~0.01%,
Ca：0.0002~0.01% and
REM：It is one kind or two or more in 0.0002~0.015%.
4. a kind of petroleum tank is made of petroleum tank according to any one of claims 1 to 3 with steel.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015240524 | 2015-12-09 | ||
| JP2015-240524 | 2015-12-09 | ||
| PCT/JP2016/005012 WO2017098701A1 (en) | 2015-12-09 | 2016-11-29 | Steel material for crude oil tank with excellent corrosion resistance, and crude oil tank |
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| Publication Number | Publication Date |
|---|---|
| CN108368577A true CN108368577A (en) | 2018-08-03 |
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| Country | Link |
|---|---|
| JP (1) | JP6409963B2 (en) |
| KR (1) | KR20180080313A (en) |
| CN (1) | CN108368577A (en) |
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| WO (1) | WO2017098701A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109457168A (en) * | 2018-12-24 | 2019-03-12 | 宁波颂杰电器有限公司 | Household gas range fuel gas conduit alloy and preparation method thereof and fuel gas conduit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101415852A (en) * | 2006-03-30 | 2009-04-22 | 杰富意钢铁株式会社 | Corroson-resistant steel material for crude oil storage tank, and crude oil storage tank |
| JP2014201755A (en) * | 2013-04-01 | 2014-10-27 | Ｊｆｅスチール株式会社 | Steel material for crude oil tank with excellent corrosion resistance, and crude oil tank |
| JP2014201756A (en) * | 2013-04-01 | 2014-10-27 | Ｊｆｅスチール株式会社 | Steel material for crude oil tank with excellent corrosion resistance, and crude oil tank |
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| JP2014201757A (en) * | 2013-04-01 | 2014-10-27 | Ｊｆｅスチール株式会社 | Steel material for crude oil tank with excellent corrosion resistance, and crude oil tank |
| KR101786409B1 (en) * | 2013-12-12 | 2017-10-16 | 제이에프이 스틸 가부시키가이샤 | Steel for crude oil tank and crude oil tank |
-
2016
- 2016-11-29 CN CN201680071895.5A patent/CN108368577A/en active Pending
- 2016-11-29 JP JP2017515265A patent/JP6409963B2/en active Active
- 2016-11-29 WO PCT/JP2016/005012 patent/WO2017098701A1/en active Application Filing
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101415852A (en) * | 2006-03-30 | 2009-04-22 | 杰富意钢铁株式会社 | Corroson-resistant steel material for crude oil storage tank, and crude oil storage tank |
| JP2014201755A (en) * | 2013-04-01 | 2014-10-27 | Ｊｆｅスチール株式会社 | Steel material for crude oil tank with excellent corrosion resistance, and crude oil tank |
| JP2014201756A (en) * | 2013-04-01 | 2014-10-27 | Ｊｆｅスチール株式会社 | Steel material for crude oil tank with excellent corrosion resistance, and crude oil tank |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109457168A (en) * | 2018-12-24 | 2019-03-12 | 宁波颂杰电器有限公司 | Household gas range fuel gas conduit alloy and preparation method thereof and fuel gas conduit |
| CN109457168B (en) * | 2018-12-24 | 2021-07-06 | 宁波正直科技有限公司 | Gas pipe alloy of household gas stove, preparation method thereof and gas pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017098701A1 (en) | 2017-06-15 |
| JPWO2017098701A1 (en) | 2017-12-07 |
| KR20180080313A (en) | 2018-07-11 |
| JP6409963B2 (en) | 2018-10-24 |
| PH12018550079A1 (en) | 2019-01-28 |
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