CN107636185B - Ethyl alcohol storage and conveying equipment steel - Google Patents
Ethyl alcohol storage and conveying equipment steel Download PDFInfo
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- CN107636185B CN107636185B CN201680034328.2A CN201680034328A CN107636185B CN 107636185 B CN107636185 B CN 107636185B CN 201680034328 A CN201680034328 A CN 201680034328A CN 107636185 B CN107636185 B CN 107636185B
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- Prior art keywords
- steel
- ethyl alcohol
- corrosion
- resistance
- amount
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 114
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 75
- 239000010959 steel Substances 0.000 title claims abstract description 75
- 235000019441 ethanol Nutrition 0.000 title claims abstract description 44
- 238000003860 storage Methods 0.000 title claims abstract description 26
- 229910052718 tin Inorganic materials 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 10
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 7
- 229910052748 manganese Inorganic materials 0.000 abstract description 2
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 2
- 229910052710 silicon Inorganic materials 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 description 89
- 230000007797 corrosion Effects 0.000 description 88
- 206010016256 fatigue Diseases 0.000 description 47
- 230000000694 effects Effects 0.000 description 25
- 208000037656 Respiratory Sounds Diseases 0.000 description 18
- 238000000034 method Methods 0.000 description 15
- 230000015572 biosynthetic process Effects 0.000 description 10
- 150000001735 carboxylic acids Chemical class 0.000 description 10
- 150000002500 ions Chemical class 0.000 description 10
- 239000002253 acid Substances 0.000 description 9
- 239000011572 manganese Substances 0.000 description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000011575 calcium Substances 0.000 description 8
- 239000011651 chromium Substances 0.000 description 8
- 239000011777 magnesium Substances 0.000 description 8
- 238000007747 plating Methods 0.000 description 8
- 239000010949 copper Substances 0.000 description 7
- 230000001965 increasing effect Effects 0.000 description 7
- 230000002401 inhibitory effect Effects 0.000 description 7
- 229910052761 rare earth metal Inorganic materials 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 7
- 229910052721 tungsten Inorganic materials 0.000 description 7
- 229910052787 antimony Inorganic materials 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 230000002829 reductive effect Effects 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 239000004615 ingredient Substances 0.000 description 5
- 239000003112 inhibitor Substances 0.000 description 5
- 229910052749 magnesium Inorganic materials 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000005098 hot rolling Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 239000010955 niobium Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000003502 gasoline Substances 0.000 description 3
- 239000010813 municipal solid waste Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000908 ammonium hydroxide Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 229910017083 AlN Inorganic materials 0.000 description 1
- 238000000864 Auger spectrum Methods 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 206010040844 Skin exfoliation Diseases 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 229910007567 Zn-Ni Inorganic materials 0.000 description 1
- 229910007614 Zn—Ni Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- WETWJCDKMRHUPV-UHFFFAOYSA-N acetyl chloride Chemical compound CC(Cl)=O WETWJCDKMRHUPV-UHFFFAOYSA-N 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910000410 antimony oxide Inorganic materials 0.000 description 1
- 239000002551 biofuel Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000009617 vacuum fusion Methods 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 238000011179 visual inspection Methods 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
- C22C38/60—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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- 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
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- 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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- 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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- 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
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- 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
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
-
- 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
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
-
- 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
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with 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
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The present invention provides a kind of storage of ethyl alcohol and conveying equipment steel, in terms of quality %, it contains C:0.02~0.3%, Si:0.01~1.0%, Mn:0.1~2.0%, P:0.003~0.03%, S:0.01% or less, Al:0.005~0.100%, N:0.0010~0.010%, and the content of Al and N is than meeting 2.0≤Al/N≤70.0, also containing selected from least one of W:0.010~0.5% and Mo:0.010~0.5%, and containing selected from least one of Sb:0.01~0.5% and Sn:0.01~0.3%, surplus is made of Fe and inevitable impurity.
Description
Technical field
The present invention relates to the structural steels for being suitable as ethyl alcohol storage and conveying element of installation.That is, steel of the invention is suitable
Cooperation is the raw material of ethyl alcohol storage facilities component, ethyl alcohol conveying equipment component.In addition, steel of the invention relates to containing
Carboxylic acid, chloride ion, the ethyl alcohol of water, particularly bio-ethanol corrosive environment under use, structure that resistance to ethyl alcohol corrosivity is excellent
Use steel.
Background technique
The sugar of corn, wheat etc. is mainly decomposed, is purified to manufacture by bio-ethanol.In recent years, bio-ethanol is made
Be widely used for the alternative fuel of petroleum (gasoline) and as the fuel mixed with gasoline all over the world, dosage have by
Year increased tendency.Therefore, although in storage, the process of transporting biological ethyl alcohol or process for being mixed with gasoline etc., biological second
The treating capacity of alcohol increased, but from the viewpoint of the corrosivity of bio-ethanol height, i.e. from generation spot corrosion, particularly stress corruption
From the viewpoint of erosion cracking (SCC), processing is still difficult.
For bio-ethanol, contain in its manufacturing process the case where acetic acid, chloride ion are as denier impurity,
It absorbs water in storage, infiltrate the case where dissolved oxygen, become a reason of corrosivity enhancing.Especially SCC caused by bio-ethanol,
It will cause the risk of serious bio-ethanol leakage accident in the presence of once generation.Therefore, SCC caused by bio-ethanol is recognized
For the corrosion phenomenon for being most serious problem, it is believed that upper it is important that preventing trouble before it happens in operation.
As described above, having the disadvantage in that the equipment for the measure for resistance to ethyl alcohol that implements, such as tank, only use
The excellent organic coating material of resistance to ethyl alcohol corrosivity, stainless steel, stainless steel cladding steel tank could safely handle bio-ethanol.
And there is a problem of that the conveying of bio-ethanol is not available pipeline of existing transfer oil etc. yet.In this way, in processing biology
The equipment of ethyl alcohol needs high cost aspect still leftover problem.
As the method for wanting to solve the problem above-mentioned, such as in patent document 1, as bio-fuel countermeasure, propose
A kind of tank to the Ni containing 5~25 mass % steel are implemented zinc-nickel plating, are implemented on the coating without 6 valence chromium
The method of chemical conversion processing.According to this method, become good containing the corrosion resistance in ethanol petrol.
In addition, in patent document 2, proposing the pipe of the excellent corrosion resistance for handling the fuel vapo(u)rs such as bio-ethanol
Road steel, the steel implement the Zn-Co-Mo that Co is 0.2~4.0at% relative to the composition ratio of Zn to surface of steel plate and plate
It applies.
In patent document 3, it was recently reported that a kind of steel that resistance to alcohol corrosivity is excellent, the steel contain Cr in terms of quality %:
0.01~1.0%, and containing two kinds in Cu:0.05~1.0%, Sn:0.01~0.2% and Ni:0.01~1.0% with
On.
In addition, in non-patent literature 1, having studied ammonium hydroxide for the steel in bio-ethanol simulation liquid
The inhibitor effect of SCC (stress corrosion cracking).Non-patent literature 1 report by simulation liquid in addition ammonium hydroxide come
The technology for inhibiting crack propagation, slowing down SCC.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2011-26669 bulletin
Patent document 2: Japanese Unexamined Patent Publication 2011-231358 bulletin
Patent document 3: Japanese Unexamined Patent Publication 2013-129904 bulletin
Non-patent literature
Non-patent literature 1:F.Gui, J.A.Beavers and N.Sridhar, Evaluation of ammonia
hydroxide for mitigating stress corrosion cracking of carbon steel in fuel
grade ethanol,NACE Corrosion Paper,No.11138(2011)
The content of invention
Subject to be solved by the invention
SCC refers to the seminess due to caused by the interaction of corrosive environment and static stress originally.Bio-ethanol
SCC can be observed in the facility being exposed in variable load environment mostly, result, it is believed that it is substantially that corrosion fatigue is existing
As.Relative to the SCC generated under static stress, the corrosion fatigue generated under dynamic stress be crackle under lower stress, with
The serious breakoff phenomenon of faster growth rate.That is, inventors believe that, bio-ethanol SCC, needs to improve second in order to prevent
Resistance to corrosion fatigue under alcohol environment.
It is considered that zinc-nickel plating disclosed in Patent Document 1 is effective to the raising of corrosion resistance.But the Zn-Ni is plated
Apply and need to be handled using plating, thus for it is small-sized be what there is no problem such as automobile fuel tank.But for
Applied to large structure, the plate thickness 3mm or more such as amount of storage is the storage tank of 1000kL or more, pipeline thick steel products and
Speech, processing cost is huge, therefore can not be using plating.In addition, have occurred plating it is bad equal in the case wheres, the part instead
It is easy to happen spot corrosion, easily causes corrosion fatigue, therefore is insufficient from the viewpoint of pitting corrosion resistance, resistance to corrosion fatigue
's.
About Zn-Co-Mo plating disclosed in Patent Document 2, it is still desirable to it is handled using plating, therefore, according to
Reason similar to those of patent document 1 can not be suitable for the thick steel products of large structure.In addition, according further to patent document 1
Identical reason is considered as insufficient from the viewpoint of pitting corrosion resistance, resistance to corrosion fatigue.
Resistance to corrosion fatigue is not considered although effective for pitting corrosion resistance about steel disclosed in Patent Document 3
Property.It is thus impossible to think that steel disclosed in Patent Document 3 can satisfy resistance to ethyl alcohol corrosion required by actual structural body
Property.
In addition, addition inhibitor has mitigated the corrosion phenomenons such as corrosion fatigue really in the record of non-patent literature 1, but
Its effect is simultaneously insufficient.This is because inhibitor is adsorbed on surface and plays effect, but its absorption behavior can be by the pH etc. of surrounding
Very big influence.Therefore, in the case where locality corrosion occurs, it is insufficient to sometimes result in absorption.In addition, there is also inhibition
The risk polluted is flowed out in agent to environment, and the addition of inhibitor cannot be known as to suitable corrosion-resistant countermeasure.
As previously discussed, the anti-corrosion method based on plating is not suitable for large structure, in addition, on structural steel surface,
It adds inhibitor and there is unevenness in terms of reducing corrosive effect, and is insufficient.Therefore, it is used as ethyl alcohol storage and conveying equipment
On the way, highly desirable to contain carboxylic acid, chloride ion and water as the corrosion resistance, particularly corrosion resistant under the bio-ethanol environment of impurity
Lose the excellent steel of fatigability.
It is an object of the present invention to solve above-mentioned problem of the prior art, providing can also make under bio-ethanol environment
Excellent steel pipe of resistance to ethyl alcohol corrosivity etc. is stored towards ethyl alcohol and the structural steel of conveying element of installation.Here, " resistance to second
Alcohol corrosivity is excellent " refer to that the resistance to corrosion fatigue in the case where containing the alcoholic environment of carboxylic acid, chloride ion and water as impurity is excellent.
The method used for solving the problem
The inventors of the present invention in order to solve the above problems, for showing excellent resistance to corrosion fatigue under bio-ethanol environment
Property ethyl alcohol storage and the exploitation of conveying equipment steel have made intensive studies.Itself as a result, it has been found that, for inhibit bio-ethanol ring
It is effectively, moreover, containing Sb and/or Sn and Al other than Mo, the W containing Mo, W for corrosion fatigue under border
It is effective.In addition, the inventors of the present invention have found, the content by reducing N improves resistance to corrosion fatigue with can dramatically.It needs to illustrate
, these effects can also effectively act as acting on for the SCC under the static load environment of stress condition milder.This hair
Bright is further to be studied and completed based on above-mentioned opinion, and purport is as follows.
[1] a kind of ethyl alcohol storage and conveying equipment steel are contained in terms of quality %:
C:0.02~0.3%,
Si:0.01~1.0%,
Mn:0.1~2.0%,
P:0.003~0.03%,
S:0.01% or less,
Al:0.005~0.100%,
N:0.0010~0.010%, and the content ratio of Al and N meets 2.0≤Al/N≤70.0,
Also contain and be selected from least one of W:0.010~0.5% and Mo:0.010~0.5%,
And containing at least one of Sb:0.01~0.5% and Sn:0.01~0.3% is selected from, surplus is by Fe and can not keep away
The impurity exempted from is constituted.
[2] storage of the ethyl alcohol according to [1] and conveying equipment steel are also contained in following in terms of quality %
At least one:
Cu:0.05~1.0%,
Cr:0.01~1.0% and
Ni:0.01~1.0%.
[3] storage of the ethyl alcohol according to [1] or [2] and conveying equipment steel are also contained and are selected from down in terms of quality %
At least one of state:
Ca:0.0001~0.02%,
Mg:0.0001~0.02% and
REM:0.001~0.2%.
[4] storage of the ethyl alcohol according to any one of [1]~[3] and conveying equipment steel are also contained in terms of quality %
Have selected from least one of following:
Ti:0.005~0.1%,
Zr:0.005~0.1%,
Nb:0.005~0.1% and
V:0.005~0.1%.
[5] storage of the ethyl alcohol according to any one of [1]~[4] and conveying equipment steel, with 825MPa or less
Tensile strength, and have 705MPa yield strength below.
The effect of invention
In accordance with the invention it is possible to obtain containing carboxylic acid, chloride ion, water bio-ethanol environment under be also able to use,
The excellent ethyl alcohol storage of resistance to ethyl alcohol corrosivity and conveying equipment steel.Used the storage tank of the invention as bio-ethanol,
In the case where transfer pot and pipeline architecture steel, compared with prior art, can longer-term it use, and can be avoided corrosion
Accident caused by the leakage of bio-ethanol caused by fatigue phenomenon, and then these various equipment can be inexpensively provided, in industry
It is upper exceedingly useful.
Specific embodiment
Hereinafter, specifically describing the present invention.
In the present invention, it is illustrated to by steel at being grouped as the reason of being defined in above range.It needs to illustrate
It is that the unit at the constituent content in being grouped as of steel is " quality % ", hereinafter, just only using unless otherwise specified
" % " is indicated.
C:0.02~0.3%
C (carbon) is to ensure that the intensity necessary element of steel, in order to ensure yield strength (350MPa preferred in the present invention
More than) and tensile strength (400MPa or more), at least contain 0.02%.C amount is preferably 0.03% or more.On the other hand, C amount is super
When 0.3%, weldability is reduced, and is restricted in welding, therefore the upper limit is set as 0.3%.C amount be preferably 0.20% with
Under.In the present invention, from the viewpoint of obtaining good resistance to corrosion fatigue, C amount is more preferably 0.10% or less.
Si:0.01~1.0%
Si (silicon) is added for deoxidation, and when content is lower than 0.01%, deoxidation effect is insufficient, on the other hand, Si
When amount is more than 1.0%, toughness, weldability can be made to be deteriorated, therefore Si content is set as 0.01~1.0%.It should be noted that about
The lower limit of Si amount, preferably 0.03%, more preferably 0.05%, further preferably 0.20%, about the upper limit of Si amount, preferably
It is 0.7%, more preferably 0.5%.
Mn:0.1~2.0%
Mn (manganese) is added to improve intensity, toughness, and when Mn amount is lower than 0.1%, effect is insufficient, another
Aspect, when Mn amount is more than 2.0%, weldability is deteriorated, therefore Mn content is set as 0.1~2.0%.It should be noted that about
The lower limit of Mn amount, preferably 0.3%, more preferably 0.5%, about the upper limit of Mn amount, preferably 1.6%, more preferably
1.3%, further preferably 1.0%.
P:0.003~0.03%
P (phosphorus) makes toughness and weldability be deteriorated, therefore P content is suppressed to 0.03% or less.P it is excessive reduction from desulfurization at
It is unfavorable from the viewpoint of this, therefore the lower limit of P amount is set as 0.003%.It should be noted that P amount preferably 0.003~
0.025% range, more preferably 0.003~0.015% range.
S:0.01% or less
S (sulphur) is the important element for influencing corrosion resistance in steel of the invention.S inevitably contains, and is containing
When amount increases, not only toughness and weldability are reduced, but also MnS etc. becomes the field trash increase of corrosion fatigue starting point, makes corrosion-resistant
Fatigability reduces.In addition, can promote since the field trash for the starting point for becoming corrosion fatigue also becomes preferential anode position
Spot corrosion.It is therefore preferable that reducing S amount to the greatest extent, can permit is 0.01% or less.It should be noted that S amount is preferably 0.005%
Hereinafter, more preferably 0.003% or less.On the other hand, the lower limit of S amount is not particularly limited due to the above reasons,.
Al:0.005~0.100%
Al (aluminium) is added as deoxidier, when content is lower than 0.005%, drops toughness because of deoxidation deficiency
It is low.On the other hand, when being welded, the toughness in welding metal portion can be made to reduce containing the Al amount for having more than 0.100%, therefore will
Al amount is limited to 0.100% or less.
In addition, Al has the function of the raising acid resistance effect for further increasing Sb, Sn for describing below.That is, with female
The anodic solution of material and the Al dissolved out3+Hydrolysis occurs for a small amount of existing water in ion and bio-ethanol, therefore in anode portion
The pH of position is reduced, and can promote the formation of Sb oxide, Sn oxide described below.By the Al containing 0.005% or more,
The effect becomes apparent from.On the other hand, when being more than 0.100% containing Al, promote the pH at anode position to reduce significantly, caused
Low pHization is spent, is unable to fully obtain corrosion resistance improvement effect brought by the formation for promoting Sb oxide, Sn oxide.From simultaneous
From the viewpoint of caring for toughness and resistance to corrosion fatigue, the lower limit of Al amount is preferably 0.010%, and more preferably 0.015%, further
Preferably 0.020%, similarly, the upper limit of Al amount is preferably 0.070%, and more preferably 0.060%, further preferably
0.050% or less.
N:0.0010~0.010%, 2.0≤Al/N≤70.0
N (nitrogen) is the important element for influencing resistance to corrosion fatigue in steel of the invention.Inhibit shape by reducing N content
At coarse nitride, corrosion fatigue life is improved.On the other hand, when being more than 0.010% containing N, can promote to be formed coarse
AlN is unable to fully obtain resistance to corrosion fatigue improvement effect brought by above-mentioned Al, and coarse AlN itself is as corrosion
The starting point of fatigue plays a role, therefore corrosion fatigue sensibility increases.Therefore, N amount is limited to 0.010% or less.It needs to illustrate
, N amount is preferably 0.007% hereinafter, more preferably 0.005% or less.In addition, about N, to steadily obtaining above-mentioned Al
Brought resistance to corrosion fatigue improvement effect plays an important role.That is, Al3+The low pHization of hydrolysis bring of ion can cause
Because promoting resistance to corrosion fatigue brought by the formation of Sb oxide, Sn oxide to improve, on the other hand, excessively reduced in pH
When, there is a possibility that generally resistance to corrosion fatigue variation.Here, the N in steel consumes H with anodic solution+, form NH4 +, to show the buffer function for inhibiting excessive pH to reduce.In order to obtain the buffer function, need containing N at least 0.0010%
More than.Therefore, it is preferably 0.0015% that the lower limit of N content, which is set as the lower limit of 0.0010%, N amount,.
In addition, as described above, the performance etc. of the effect of resistance to corrosion fatigue raising brought by the formation of Al and N and AlN, Al
It is closely related, it is important that Al amount/N amount (mass ratio) in optimization steel.When Al amount is excessive relative to N amount, that is, it is more than
When 70.0, the formation speed of AlN is dramatically increased, and leads to the coarsening of AlN.Moreover, NH4 +Formation brought by buffer function without
Method catches up with the formation of AlN.Therefore, Al amount/N amount upper limit is set as 70.0.The preferred upper limit of Al amount/N amount is 50.0, more preferably
The upper limit be 20.0.On the other hand, when Al amount/N amount is lower than 2.0, the Al in steel exists in the form of AlN mostly, Wu Fachong
Divide the Al for generating and generating with the anodic solution of base material3+Ion.That is, the raising for being unable to fully obtain Sb, Sn brought by Al is resistance to
Acid effect.Therefore, it is 3.0 that Al amount/N amount lower limit, which is set as the preferred lower limit of 2.0, Al amount/N amount, and preferred lower limit is
5.0。
Selected from least one of W:0.010~0.5% and Mo:0.010~0.5%
W (tungsten) is to the raising effective element of resistance to corrosion fatigue.W and Mo are similarly formed the oxyacid as corrosion product
Ion, therefore when the crackle as the starting point of stress corrosion cracking has occurred, above-mentioned corrosion product, which is promptly adsorbed in, to be split
Line front end makes the reduction of anode reaction activity, has the function of inhibiting crack propagation.In addition, passing through the oxidation quilt in steel surface
W is imported in film, and the oxidation quilt under acidic environment caused by the carboxylic acid contained in the form of impurity in bio-ethanol can be improved
The dissolubility resistent of film reduces non-uniform corrosion, and has both the effect for reducing pitting corrosion resistance.However, being lower than in W content
When 0.010%, it is unable to fully show the improvement of resistance to corrosion fatigue and pitting corrosion resistance.On the other hand, it is more than in W amount
It is unfavorable in terms of cost when 0.5%, therefore it is set as 0.010~0.5% for W content.The lower limit of W amount is preferably 0.05%, more
Preferably 0.08%.Increased costs in order to prevent, the upper limit of W amount are preferably that the upper limit of 0.3%, W amount is more preferably 0.2%.
Mo (molybdenum) is to the raising effective element of resistance to corrosion fatigue.Mo forms the oxygen-containing acid ion as corrosion product,
Therefore when the crackle as the starting point of corrosion fatigue has occurred, above-mentioned corrosion product is promptly adsorbed on crackle front end, is made
Anode reaction activity reduces, and has the function of inhibiting crack propagation.In addition, by being imported in the oxide film thereon of steel surface
The resistance to molten of the oxide film thereon under acidic environment caused by the carboxylic acid contained in the form of impurity in bio-ethanol can be improved in Mo
Xie Xing reduces non-uniform corrosion, and has both the effect for reducing pitting corrosion resistance.However, when Mo content is lower than 0.010%, nothing
Method sufficiently shows the improvement of resistance to corrosion fatigue and pitting corrosion resistance.On the other hand, when Mo amount is more than 0.5%, at
Present aspect is unfavorable, therefore Mo content is set as 0.010~0.5%.The lower limit of Mo amount is preferably 0.05%, more preferably
0.08%.In addition, increased costs, the upper limit of Mo amount are preferably 0.4% in order to prevent, more preferably 0.3%.
It should be noted that preferably comprising above-mentioned W in the present invention from the viewpoint of obtaining good resistance to corrosion fatigue
And Mo.
Selected from least one of Sb:0.01~0.5% and Sn:0.01~0.3%
Sb (antimony) is the element for improving acid resistance, and resistance to corrosion fatigue is important in steel of the invention and improves member
Element.The effective element of crack propagation especially to the corrosion fatigue crack front end for inhibiting low ph conditions.Sb with base material sun
It dissolves and remains in the form of the oxide, is enriched in anode position in pole.Anode portion is protected as a result, is inhibited significantly molten
The progress of reaction is solved, resistance to corrosion fatigue is improved.However, when Sb content is lower than 0.01%, not sufficiently effective, another party
Face is restricted, therefore Sb content is set as 0.01~0.5% model when Sb amount is more than 0.5% in steel manufacture view
It encloses.It should be noted that the lower limit of Sb amount is preferably 0.02%, more preferably 0.05%.The upper limit of Sb amount is preferably 0.4%,
More preferably 0.30%.
Sn (tin) same as Sb is the element for improving acid resistance, is important resistance to corrosion fatigue in steel of the invention
Property improve element.The effective element of crack propagation especially to the corrosion fatigue crack front end for inhibiting low ph conditions.Sn is adjoint
The anodic solution of base material and remain in the form of the oxide, be enriched in anode position.Anode portion is protected as a result, significantly
The progress for inhibiting dissolution to react, resistance to corrosion fatigue are improved.However, when content is lower than 0.01%, it is not sufficiently effective,
On the other hand, it when Sn amount is more than 0.3%, is restricted in steel manufacture view, therefore Sn content is set as 0.01~0.3%
Range.It should be noted that the lower limit of Sn amount is preferably 0.02%, more preferably 0.05%.The upper limit of Sn amount is preferably
0.30%, more preferably 0.15%.
It should be noted that in the present invention, from the viewpoint of obtaining good resistance to corrosion fatigue, preferably comprising
State Sb and Sn.
In the present invention, in above-mentioned each ingredient, it is important that will be by the oxygen-containing acid ion of the oxygen-containing acid ion of Mo, W
Surface protection effect and the strong surface protection as brought by the oxide of Sb, the oxide of Sn of brought high quick-acting act on
It is combined.That is, in the fireballing situation of Corrosion Fatigue Crack Propagation, the shape of the Sb oxide of crackle front end, Sn oxide
The extension that crackle front end can not be caught up at script can not obtain the crackle portion surface protection effect of Sn, Sb.But by make Mo,
W coexists, and the quick surface protection effect of the oxygen-containing acid ion of the Mo in crackle portion, W oxyacid ion bring plays a role first.By
This, crack propagation velocity reduces, and can catch up with the expansion of crackle front end in the formation of the Sb oxide, Sn oxide of crackle front end
Exhibition.As a result, crackle front end is formed by firm sealer this two layers by oxyacid sheath and oxide skin(coating)
Covering, inhibits corrosion fatigue with can dramatically.Here, in order to promote the formation of Sb oxide, Sn oxide, it is important that control Al
Amount and reduction N amount.The reduction of N amount helps to reduce corrosion fatigue starting point, therefore can get the superposition that resistance to corrosion fatigue improves
Effect.
More than, basis is illustrated, but in the present invention, in addition to this, can also suitably be contained as needed
Ingredient as described below.
Selected from least one of Cu:0.05~1.0%, Cr:0.01~1.0% and Ni:0.01~1.0%
Cu (copper), Cr (chromium), Ni (nickel) are to caused by the carboxylic acid that is contained in the form of impurity in bio-ethanol of improvement
Acidic environment under the effective element of resistance to corrosion fatigue.However, in poor situation, it is not sufficiently effective, on the other hand,
It when content is more than 1.0%, is restricted in steel manufacture view, therefore, Cu content is set as 0.05~1.0%, Cr content
It is set as the range that 0.01~1.0%, Ni content is set as 0.01~1.0%.The upper limit of Cu content is preferably 0.5%, more excellent
It is selected as 0.2%.The upper limit of Cr content is preferably 0.5%, and more preferably 0.2%.The upper limit of Ni content is preferably 0.5%, more excellent
It is selected as 0.2%.
Selected from least one of Ca:0.0001~0.02%, Mg:0.0001~0.02% and REM:0.001~0.2%
As described above, MnS become spot corrosion, corrosion fatigue starting point, be it is harmful, in order to be reduced, from control steel in
From the viewpoint of the form of sulfide, dispersion, Ca (calcium), Mg (magnesium), REM (rare earth element) are effective.In poor feelings
Under condition, it is unable to fully obtain the effect.On the other hand, in the case where more than the content, Ca, Mg, REM itself form coarse instead
Field trash and become spot corrosion and corrosion fatigue starting point.Therefore, Ca content is set as 0.0001~0.02%, Mg content and is set as
0.0001~0.02%, REM content are set as 0.001%~0.2% range.The lower limit of Ca content is preferably 0.001%, Ca
The upper limit of content is preferably 0.005%.The lower limit of Mg content is preferably the upper limit preferably 0.005% of 0.001%, Mg content.REM
The upper limit of content is preferably 0.030%.
In Ti:0.005~0.1%, Zr:0.005~0.1%, Nb:0.005~0.1% and V:0.005~0.1%
At least one
In order to improve the mechanical property of steel, one in Ti (titanium), Zr (zirconium), Nb (niobium) and V (vanadium) can also be contained
Kind is two or more.When content is less than 0.005%, on the other hand contain effective equal deficiency is more than these elements in content
When 0.1%, the mechanical property of weld part is reduced, therefore the content of each element is set as 0.005~0.1% range.It needs
Illustrate, for each element, content is preferably 0.005~0.05% range.
In steel of the invention, ingredient other than the above is Fe and inevitable impurity.As long as in addition, not damaging
In the range of effect of the present invention, the ingredient other than the above comprising inevitably containing can permit.
It is molten in the ethyl alcohol containing carboxylic acid 0.02mmol/L or more, chloride ion 0.02mg/L or more and water 0.05vol% or more
In liquid, especially spot corrosion position, crackle front end are exposed under low ph conditions.Therefore, other than generating spot corrosion, crackle,
The secondary rupture of the embrittlement as caused by hydrogen can be also superimposed.Drawing in order to inhibit the hydrogen embrittlement sensibility of steel, for steel of the invention
For stretching intensity, 825MPa is preferably set to hereinafter, being preferably set to 705MPa or less for yield strength.
Steel of the invention is suitable for ethyl alcohol storage and conveying equipment purposes.In addition, steel of the invention be containing carboxylic acid, chlorine from
Steel workable under the corrosive environment of son, the ethyl alcohol of water, particularly bio-ethanol, resistance to ethyl alcohol corrosivity is excellent.
In the present invention, carboxylic acid is aliphatic carboxylic acid, the range that carbon atom number is 1~5.In the present invention, ethyl alcohol stores
And conveying equipment refers to the equipment stored, conveyed to ethyl alcohol, transported, accumulated, distributed, recycled, mixed etc..It is set as this
It is standby, such as have tank, steel pipe, oil tanker, piping, pipeline, nozzle, valve etc..Ethyl alcohol storage and conveying equipment steel of the invention
Shape can be selected suitably, preferably steel plate.The preferred thickness (wall thickness) of steel of the invention is 1~50mm, preferred thickness
For 3~50mm, further preferably 5~50mm.
Then, the preferred manufacturing method of steel of the present invention is illustrated.
The furnace well known to converter, electric furnace etc. carries out melting at the molten steel being grouped as to above-mentioned, passes through continuously casting
The steel raw materials such as steel billet, blank are made in method well known to method, ingot casting method etc..It should be noted that when carrying out melting, Ke Yishi
Apply vacuum deaeration refining etc..
The method for adjusting compositions of molten steel can be carried out according to well known method for making steel.
Then, when above-mentioned steel raw material is rolled into desired size shape, 1000~1350 DEG C are preferably heated to
Temperature.When heating temperature is lower than 1000 DEG C, deformation drag is big, there is the tendency for being difficult to hot rolling.On the other hand, more than 1350 DEG C
Heating exist and become the reason of generating marks on surface, oxide skin loss, unit of fuel is made to consume increased hidden danger.Heating temperature
More preferably 1050~1300 DEG C of range.It should be noted that the temperature in steel raw material is originally used for 1000~1350 DEG C
It, can also be without heating, and directly for hot rolling in the case where range.
It should be noted that hot fine rolling is usually terminated temperature and is optimized in hot rolling.Hot fine rolling terminates temperature
It is preferably set to 600 DEG C or more and 850 DEG C or less.When hot fine rolling terminates temperature lower than 600 DEG C, because of the increase of deformation drag,
Rolling load increases, and there is the hidden danger for being difficult to carry out rolling.On the other hand, it when the temperature is more than 850 DEG C, can not obtain sometimes
Desired intensity.It is that 150 DEG C/sec of acceleration below are cold that cooling after hot fine rolling, which is preferably set to air-cooled or cooling velocity,
But.The cooling range for stopping temperature and being preferably set to 300~750 DEG C when carrying out accelerating cooling.It should be noted that can be cold
But implement reheating processing afterwards.
Embodiment
Next, being illustrated to the embodiment of the present invention.It should be noted that the present invention is not limited to these implementations
Example.In addition, in the description of the example, table 1-1 and table 1-2 are referred to as table 1, table 2-1 and table 2-2 are referred to as table 2.
It will be with, at after the molten steel being grouped as vacuum fusion furnace melting or after carrying out converter melting, passing through shown in table 1
Steel billet is made in continuously casting.Then, after being heated to 1230 DEG C, terminate to implement hot rolling under conditions of temperature is 850 DEG C in finish rolling,
The steel plate of 15mm thickness has been made.
Micro-tension test piece (parallel portion 6mm φ × 25mm) is acquired in the direction C (width direction) of the steel plate obtained in this way,
Tension test is carried out at room temperature according to the regulation of JIS Z 2241, has found out yield strength (YS) and tensile strength (TS).It will
As a result shown in table 1.
In addition, implementing corrosion fatigue test as described below.
Firstly, cutting uniaxial pole tension test sheet (parallel portion size: length 25.4mm × diameter 3.81mm from steel plate
φ), parallel portion is polished with being equivalent to the standard that finishing is No. 2000 templates.Then, it carries out in acetone 5 minutes
Ultrasonic degreasing is mounted on low strain dynamic speed tensile tester after air-drying.Using be added into ethyl alcohol 985ml water 10ml,
Methanol 5ml, acetic acid 56mg, NaCl13.2mg and manufactured solution simulate liquid as bio-ethanol.It is drawn to uniaxial pole is covered
It stretches and fills bio-ethanol simulation liquid in the slot of test film, based on the yield strength (YS) measured before testing, in single shaft
The stretching axis direction of pole tension test sheet is with 8.3 × 10-4Period of Hz applies variable stresses to longest 240 hours, it is described can
Maximum stress is set as yield strength × 110% by varying stress, and minimum stress is set as yield strength × 10%.
In evaluation, first, it is thus identified that whether there is or not fractures between experimental period.Then, unbroken uniaxial pole is stretched
For test film, test film is taken out after experiment, implements to utilize microscopical visual inspection, it is thus identified that whether there are cracks.To true
The test film observation for recognizing crackle stretches axis direction section, determines section maximum crack length.According to benchmark below to resistance to
Corrosion fatigue is evaluated.The case where for crack length less than 20 μm, it is judged as that crack propagation is slow, is sent out in facilities and equipments
The risk that raw corrosion fatigue destroys is low (qualification).
◎: flawless
Zero: having fine crack (crack length is less than 20 μm)
△: there is crackle (crack length is 20 μm or more)
×: fracture
Obtained result is recorded in table 2.
As shown in Table 2, example clearly improves the degree of the corrosion fatigue crack in bio-ethanol simulation liquid.
In contrast, fracture all has occurred in the comparative example of ingredient compositional deviation invention scope or the degree of corrosion fatigue crack is big.
According to the comparison of example and comparative example it is found that improvement of the invention is obvious.In addition, by splitting to producing
The Auger spectrum analysis that the crackle front end of the example of line is implemented, it is thus identified that be formed with superficial layer, the surface in crackle front end
Layer is divided into the enriched layer of oxygen-containing acid ion formation element (W, Mo) and this two layers of the enriched layer of oxide forming elements (Sn, Sb).
That is, protecting crackle front end by firm protective layer in example.
Table 1-1
Table 1-2
Table 2-1
Table 2-2
Claims (5)
1. a kind of ethyl alcohol storage and conveying equipment steel are contained in terms of quality %:
C:0.02 ~ 0.3%,
Si:0.01 ~ 1.0%,
Mn:0.1 ~ 2.0%,
P:0.003 ~ 0.03%,
S:0.01% or less,
Al:0.005 ~ 0.100%,
N:0.0010 ~ 0.010%, and the content ratio of Al and N meets 2.0≤Al/N≤70.0,
Also contain and be selected from least one of W:0.010 ~ 0.5% and Mo:0.010 ~ 0.5%,
And containing at least one of Sb:0.01 ~ 0.5% and Sn:0.01 ~ 0.3% is selected from, surplus is by Fe and inevitable impurity
It constitutes,
The ethyl alcohol storage and conveying equipment steel have 825MPa tensile strength below, and have 705MPa surrender below
Intensity.
2. ethyl alcohol according to claim 1 storage and conveying equipment steel, in terms of quality %, also contain in following
At least one:
Cu:0.05 ~ 1.0%,
Cr:0.01 ~ 1.0% and
Ni:0.01 ~ 1.0%.
3. ethyl alcohol according to claim 1 storage and conveying equipment steel, in terms of quality %, also contain in following
At least one:
Ca:0.0001 ~ 0.02%,
Mg:0.0001 ~ 0.02% and
REM:0.001 ~ 0.2%.
4. ethyl alcohol according to claim 2 storage and conveying equipment steel, in terms of quality %, also contain in following
At least one:
Ca:0.0001 ~ 0.02%,
Mg:0.0001 ~ 0.02% and
REM:0.001 ~ 0.2%.
5. the storage of ethyl alcohol described according to claim 1 ~ any one of 4 and conveying equipment steel are also contained in terms of quality %
Selected from least one of following:
Ti:0.005 ~ 0.1%,
Zr:0.005 ~ 0.1%,
Nb:0.005 ~ 0.1% and
V:0.005 ~ 0.1%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-124331 | 2015-06-22 | ||
| JP2015124331 | 2015-06-22 | ||
| PCT/JP2016/002938 WO2016208172A1 (en) | 2015-06-22 | 2016-06-20 | Steel for ethanol storage and transport equipment |
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| CN107636185B true CN107636185B (en) | 2019-07-12 |
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| JP (1) | JP6241555B2 (en) |
| KR (1) | KR102018972B1 (en) |
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|---|---|---|---|---|
| JP7218462B2 (en) | 2018-03-15 | 2023-02-06 | 株式会社コロナ | bath water heater |
| WO2020111782A1 (en) * | 2018-11-30 | 2020-06-04 | 주식회사 포스코 | Steel sheet having corrosion resistance in low concentration sulfuric acid/hydrochloric acid complex condensation atmosphere and manufacturing method therefor |
| KR102399814B1 (en) * | 2019-12-20 | 2022-05-19 | 주식회사 포스코 | A steel sheet having high abrasion resistance and corrosion resistance at sulfuric/hydrochloric acid condensing environment and manufacturing method the same |
| KR102368362B1 (en) * | 2019-12-20 | 2022-02-28 | 주식회사 포스코 | A steel sheet having high abrasion resistance and corrosion resistance at sulfuric/hydrochloric acid condensing environment and manufacturing method the same |
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| JP2013129904A (en) * | 2011-11-21 | 2013-07-04 | Jfe Steel Corp | Steel material excellent in alcohol-corrosion resistance |
| CN103276291A (en) * | 2009-01-30 | 2013-09-04 | 杰富意钢铁株式会社 | Heavy gauge, high tensile strength, hot rolled steel sheet with excellent HIC resistance and manufacturing method therefor |
| WO2014087628A1 (en) * | 2012-12-05 | 2014-06-12 | Ｊｆｅスチール株式会社 | Steel material having excellent alcohol-induced pitting corrosion resistance and alcohol-induced scc resistance |
| JP2014201759A (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 |
| WO2015087529A1 (en) * | 2013-12-12 | 2015-06-18 | Ｊｆｅスチール株式会社 | Steel material having excellent alcohol-induced pitting corrosion resistance and alcohol-induced scc resistance |
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| JP5856879B2 (en) * | 2011-03-29 | 2016-02-10 | 新日鐵住金ステンレス株式会社 | Ferritic stainless steel for biofuel supply system parts and biofuel supply system parts |
| JP6113475B2 (en) * | 2012-12-05 | 2017-07-05 | Ｊｆｅスチール株式会社 | Steel material with excellent resistance to alcohol corrosion |
| JP6105264B2 (en) * | 2012-12-05 | 2017-03-29 | Ｊｆｅスチール株式会社 | Steel material with excellent resistance to alcohol corrosion |
| JP6048385B2 (en) * | 2013-12-12 | 2016-12-21 | Ｊｆｅスチール株式会社 | Steel for crude oil tanks and crude oil tanks with excellent corrosion resistance |
-
2016
- 2016-06-20 KR KR1020177033489A patent/KR102018972B1/en active IP Right Grant
- 2016-06-20 US US15/736,087 patent/US20180142335A1/en not_active Abandoned
- 2016-06-20 JP JP2016557673A patent/JP6241555B2/en active Active
- 2016-06-20 WO PCT/JP2016/002938 patent/WO2016208172A1/en active Application Filing
- 2016-06-20 BR BR112017027978-9A patent/BR112017027978B1/en active IP Right Grant
- 2016-06-20 CN CN201680034328.2A patent/CN107636185B/en active Active
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| CN103276291A (en) * | 2009-01-30 | 2013-09-04 | 杰富意钢铁株式会社 | Heavy gauge, high tensile strength, hot rolled steel sheet with excellent HIC resistance and manufacturing method therefor |
| JP2013129904A (en) * | 2011-11-21 | 2013-07-04 | Jfe Steel Corp | Steel material excellent in alcohol-corrosion resistance |
| WO2014087628A1 (en) * | 2012-12-05 | 2014-06-12 | Ｊｆｅスチール株式会社 | Steel material having excellent alcohol-induced pitting corrosion resistance and alcohol-induced scc resistance |
| JP2014201759A (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 |
| WO2015087529A1 (en) * | 2013-12-12 | 2015-06-18 | Ｊｆｅスチール株式会社 | Steel material having excellent alcohol-induced pitting corrosion resistance and alcohol-induced scc resistance |
Also Published As
| Publication number | Publication date |
|---|---|
| BR112017027978A2 (en) | 2018-08-28 |
| KR102018972B1 (en) | 2019-09-05 |
| JP6241555B2 (en) | 2017-12-06 |
| KR20170138535A (en) | 2017-12-15 |
| JPWO2016208172A1 (en) | 2017-06-29 |
| BR112017027978B1 (en) | 2021-11-16 |
| US20180142335A1 (en) | 2018-05-24 |
| WO2016208172A1 (en) | 2016-12-29 |
| CN107636185A (en) | 2018-01-26 |
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