CN108425069A - One kind having superior heat resistance, high-temperature oxidation hot-dip coated steel sheet and production method - Google Patents
One kind having superior heat resistance, high-temperature oxidation hot-dip coated steel sheet and production method Download PDFInfo
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- CN108425069A CN108425069A CN201810544829.6A CN201810544829A CN108425069A CN 108425069 A CN108425069 A CN 108425069A CN 201810544829 A CN201810544829 A CN 201810544829A CN 108425069 A CN108425069 A CN 108425069A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 66
- 239000010959 steel Substances 0.000 title claims abstract description 66
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 27
- 230000003647 oxidation Effects 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 239000011248 coating agent Substances 0.000 claims abstract description 26
- 238000000576 coating method Methods 0.000 claims abstract description 26
- 239000000203 mixture Substances 0.000 claims abstract description 21
- 238000007747 plating Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 238000000137 annealing Methods 0.000 claims abstract description 13
- 239000012535 impurity Substances 0.000 claims abstract description 12
- 229910052742 iron Inorganic materials 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 12
- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 11
- 238000005269 aluminizing Methods 0.000 claims abstract description 10
- 238000007654 immersion Methods 0.000 claims abstract description 9
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 5
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 28
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 9
- 230000009467 reduction Effects 0.000 claims description 9
- 238000005096 rolling process Methods 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 8
- 238000005097 cold rolling Methods 0.000 claims description 6
- 238000009749 continuous casting Methods 0.000 claims description 6
- 239000013527 degreasing agent Substances 0.000 claims description 6
- 238000005098 hot rolling Methods 0.000 claims description 6
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000010079 rubber tapping Methods 0.000 claims description 5
- 238000003723 Smelting Methods 0.000 claims description 4
- 238000002791 soaking Methods 0.000 claims description 3
- 230000003746 surface roughness Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 7
- 239000004615 ingredient Substances 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 26
- 229910052782 aluminium Inorganic materials 0.000 description 25
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 24
- 239000004411 aluminium Substances 0.000 description 14
- 239000011572 manganese Substances 0.000 description 11
- 239000010936 titanium Substances 0.000 description 10
- 239000010955 niobium Substances 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- 229910052719 titanium Inorganic materials 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 6
- KMWBBMXGHHLDKL-UHFFFAOYSA-N [AlH3].[Si] Chemical compound [AlH3].[Si] KMWBBMXGHHLDKL-UHFFFAOYSA-N 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 229910052758 niobium Inorganic materials 0.000 description 6
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- 239000002893 slag Substances 0.000 description 6
- 238000005253 cladding Methods 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 5
- 229910052748 manganese Inorganic materials 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 229910021328 Fe2Al5 Inorganic materials 0.000 description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000008199 coating composition Substances 0.000 description 3
- 239000010960 cold rolled steel Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 229910052761 rare earth metal Inorganic materials 0.000 description 3
- 150000002910 rare earth metals Chemical class 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910018125 Al-Si Inorganic materials 0.000 description 2
- 229910018520 Al—Si Inorganic materials 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229910000805 Pig iron Inorganic materials 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- -1 aluminum-silicon-titanium-boron Chemical compound 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000008397 galvanized steel Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000010731 rolling oil Substances 0.000 description 2
- 238000003856 thermoforming Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000632 Alusil Inorganic materials 0.000 description 1
- 229910002551 Fe-Mn Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- JZQOJFLIJNRDHK-CMDGGOBGSA-N alpha-irone Chemical compound CC1CC=C(C)C(\C=C\C(C)=O)C1(C)C JZQOJFLIJNRDHK-CMDGGOBGSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 235000021168 barbecue Nutrition 0.000 description 1
- 235000008429 bread Nutrition 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000003359 percent control normalization Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 230000004584 weight gain Effects 0.000 description 1
- 235000019786 weight gain Nutrition 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- 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
- 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
- C21D8/0236—Cold 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
- 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
- C22C38/04—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
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/12—Aluminium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/40—Plates; Strips
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Coating With Molten Metal (AREA)
Abstract
The present invention provides one kind, and there is superior heat resistance, high-temperature oxidation hot-dip coated steel sheet and production method, substrate to contain C：≤ 0.25%；Si：≤ 0.080%；0.10%≤Mn≤1.20%；P：≤ 0.020%；S：≤ 0.015%；Al：0.020%~0.055%；N：≤ 0.0050%；Ti：≤ 0.10%；Nb：≤ 0.10%, surplus is Fe and inevitable impurity.Coating contains Si 3 5%, Fe 1.0%~3.0%, La 0.05%~0.2%, Mg 0.05%~0.2%, and surplus is Al and a small amount of inevitable impurity.Compared with prior art, the present invention is aluminized substrate ingredient, annealing process, plating solution composition and the immersion plating technology etc. of silicon steel plate by control, produces the hot-dip aluminizing silicon steel plate with superior heat resistance, high-temperature oxidation.
Description
Technical field
The invention belongs to steel plate hot-dip processing technique fields, are related to a kind of with superior heat resistance, high-temperature oxidation heat
Soak clad steel sheet and production method.
Background technology
Since the service life is relatively low at high operating temperatures for cold-rolled steel sheet and galvanized steel, generally there is oxygen using surface of steel plate after several years
Change, unfavorable to health, the general operating limit operating temperature of hot-dip galvanizing sheet steel is 230 DEG C.And aluminium coat steel plate can be resistant to 600 DEG C
High temperature, oxidation and corrosion is very strong, the service life than galvanized steel extend 60%, be widely used in the high temperature resistants such as combustion gas part, oven
Field.
For aluminium coat steel plate when operating temperature is less than 450 DEG C, steel plate can keep bright appearance, until 500 DEG C or more
Start to aoxidize and change colour.Therefore aluminium coat steel plate can be used for high-temperature work environment, and heat resistance is equivalent to 13Cr stainless steels, until
Just start to soften at 700 DEG C.Carbon steel high-temperature oxidation after aluminizing is equal with stainless steel, and heat resistance can be improved nearly a hundred times, respectively
Kind of the steel maximum operation (service) temperature before and after silicon of aluminizing greatly improves.
Aluminium coat steel plate has excellent heat-resisting, high-temperature oxidation, is the specific combination due to substrate and coating microstructure,
A kind of ferroaluminium is formed, makes steel plate that there is splendid heat-resisting quantity.
Due to the heat-resisting and high-temperature oxidation that aluminium coat steel plate is excellent, it is widely used in the higher neck of heat resistant requirements
Domain：Oven, oven, deep fryer, bread baker, burner air exhauster, heat insulating member etc..
China Patent No. is 201410739819.X's《A kind of heat-resisting steel sheet and plate and its preparation process》, elaborate by using
Base layer dope and surface coating material carry out coating and baking successively on pre-coating film steel plate, wherein the base layer dope used and surface layer
Coating is the base-material as coating composition by silicone modified polyester resin, and is aided with other auxiliary agents and is prepared, in reality
In use, since silicone modified polyester resin has more excellent high temperature resistance, the coating composition being made from it
It is sprayable in metal surfaces such as iron material, aluminium or stainless steels with more good property, and it is pan-fried to be widely used in baking tray, electricity
On the heat proof materials such as pot and barbecue utensil.
China Patent No. is 201510027633.6《A kind of station boiler heat-resisting steel sheet and plate and its manufacturing method》, illustrate
A kind of production method of heat-resistance stainless steel plate.The mass percent of steel plate ingredient is：C：0.08~0.12, Si：0.15~
0.45, Mn：0.35~0.55, P：≤ 0.013, S：≤ 0.005, Cr：8.60~8.90, Mo：0.31~0.50, V：0.16~
0.22, W：1.55~1.85, Nb：0.045~0.085, N：0.045~0.065, B：0.002~0.004, Ni：0.20~
0.35,0 ＜ Al≤0.01,0 ＜ O≤20ppm.Manufacturing method is followed successively by；It is prepared by blank：Cast continuous casting billet；Annealing：Annealing temperature
740±10℃；Hot repair is ground；Heating steel billet：Heating temperature is 1230 ± 10 DEG C；V rolling：Roughing start rolling temperature 1160~1200
DEG C, 860~900 DEG C of finish rolling finishing temperature；VI thermal straightening；VII normalizing：1050 ± 10 DEG C of normalizing temperature；VIII tempering：Temperature
780 ± 10 DEG C, steel plate is come out of the stove air-cooled after heat preservation.
What is be widely used at present there is superior heat resistance, high temperature oxidation resisting steel plate to be mainly coated in steel using high-temperature resistant coating
Plate surface, and use high temperature resistant stainless steel.
China Patent No. is 201110179923.4《A kind of hot-forming silicon steel plate and its manufacturing method of aluminizing》, explain
It has stated and first NOF stoves has been used to carry out pre-oxidation treatment by thermoforming steel plate, then passed through high hydrogen atmosphere (H in reduction furnace2:
20%~50%, surplus N2) and low dew point (in stove dew point control at -20 DEG C~-60 DEG C) restored, produce and be hot pressed into
Type silicon steel plate of aluminizing.Its chemical composition requires：C:0.08%~0.3%, Si:0.10%~1.5%,
Mn:0.2%~3.0%, P:≤ 0.010%, S:≤ 0.004%, Al:0.016%~0.040%, Cr:0.1%~0.9%,
Ti:0.01%~0.2%, B:0.0001%~0.005%, N:≤ 0.005%, surplus is Fe and inevitable impurity.It should
It is thermoforming steel that patent substrate, which is directed to, and annealing furnace reduction section hydrogen content is higher, there is larger peace in the industrial production
Full hidden danger.And its patent light plate carries out fast quickly cooling to alusil alloy solidification point after aluminum pot extraction with >=120 DEG C/s
To control the growth of alloy-layer, cooling rate is very fast, in actual production without feasibility.
China Patent No. is 201110399806.9《A kind of producer of continuous-hot-dipped aluminum-silicon-titanium-boron-coated alloy steel plate
Method》It is 200910231746.2 with China Patent No.《A kind of production method of aluminum-silicon-copper-magnesium alloy steel plate by continuous hot dipping》,
By adding micro Ti, B and Cu, Mg in aluminium silicon plating solution, increase than cost with addition rare-earth phase, and the addition of Cu contents
It can cause corrosion proof reduction.
Invention content
The purpose of the present invention is to provide one kind having superior heat resistance, high-temperature oxidation hot-dip coated steel sheet and producer
Method, by designing substrate ingredient, Coating composition, rolling mill practice, cleaning, annealing process, immersion plating technology and plating postcooling work
Skill etc. has superior heat resistance, high-temperature oxidation aludip and preparation method.
Specific technical solution of the present invention is as follows：
One kind provided by the invention has superior heat resistance, high-temperature oxidation hot-dip coated steel sheet, including substrate and coating,
The substrate contains following mass percentage chemical composition：C：≤ 0.25%；Si：≤ 0.080%；0.10%≤Mn≤
1.20%；P：≤ 0.020%；S：≤ 0.015%；Al：0.020%~0.055%；N：≤ 0.0050%；Ti：≤ 0.10%；
Nb：≤ 0.10%, surplus is Fe and inevitable impurity.
The coating contains the chemical composition of following mass percentage：Si 3-5%, Fe 1.0%~3.0%, La
0.05%~0.2%, Mg 0.05%~0.2%, surplus are Al and a small amount of inevitable impurity.
The above-mentioned production method with superior heat resistance, high-temperature oxidation hot-dip coated steel sheet provided by the invention, including
Following steps：
1) molten iron pre-processes；
2) converter smelting；
3) alloy fine tuning station；
4) RH stoves refine；
5) continuous casting；
6) strand is come out of the stove；
7) hot rolling；
8) finish to gauge；
9) it batches；
10) cold rolling and cleaning；
11) continuous annealing；
12) then Hot-dip aluminum-silicon cools down；
13) finishing and straightening.
Further, step 1) molten iron pre-processes：It skims before it is required that and skims with after.
Step 2) converter smelting：It is not added with the pig iron, slag steel；It is tapped using self-loopa steel scrap, strengthens converter dephosphorization, reinforce pushing off the slag
Operation；Tapping process adds lime, without deoxidation.
Step 3) alloy fine tuning station：Carry out ladle top slag modification.
Step 4) RH stoves refine：RH is then blown into according to temperature and oxygen position in the prometaphase using light treatment process if you need to oxygen blast
Oxygen；The broken unprecedented guarantee net circulation time is not less than 6min.
Step 5) continuous casting：Middle packet target temperature control is 20~40 DEG C more than liquidus temperature.
Step 6) strand tapping temperature is controlled at 1160 DEG C~1260 DEG C.
Step 7) hot rolling：Six rack tandem rollings, primary, secondary entrance high pressure descaling.
Step 8) finishing temperature control is at 850 DEG C~950 DEG C.
Step 9) oiler temperature control is at 680 DEG C~760 DEG C.
Step 10) cold rolling total reduction is controlled 50%~80%, roll hard volume surface roughness Ra value control 0.4~
1.6μm.Effectively to remove the impurity such as cold-rolled steel sheet belt steel surface ROLLING OIL and iron powder, stood so that strip is entered with clean surface
Formula annealing furnace, the cleaning are specially：Degreaser is a concentration of in alkaline bath：1~2%, temperature is 70~90 DEG C；Electrolytic cleaning tank
Interior degreaser is a concentration of：3~8%, temperature is 70~90 DEG C.
Step 11) continuous annealing：Restore furnace atmosphere is by volumn concentration：H2：5%~10%, surplus N2；Stove
At -20~-50 DEG C, soaking temperature is controlled at 720 DEG C~850 DEG C for interior dew point control.
Step 12) Hot-dip aluminum-silicon：Bath temperature is 640~720 DEG C, and it is 640~720 DEG C that steel plate, which enters pot temperature, immersion plating
Time is 2~5s.The silicon steel plate that will aluminize carries out cooling treatment, 20 DEG C/s-80 DEG C/s of cooling rate through wind turbine.Pass through air knife, leaching
Depositing process etc. controls coating single side weight in 30g/m2-100g/m2。
Step 13) finishing and straightening：Finishing elongation control 0.5~2.0%, straightening elongation control 0.2~
1.0%.
The cold-rolled substrate of aluminium coat steel plate is based primarily upon following principle：
Carbon (C)：C is to improve that intensity is most economical and most effective solution strengthening element, C content increase, and intensity increases, but steel
Plasticity and formability reduce.The increase of C content can prevent the thickness of the growth reduction alloy-layer of alloy-layer in carbon steel.This hair
Bright middle C percentage compositions control range is C≤0.25%.
Manganese (Mn)：Manganese belongs to the alloying element that can expand γ phase region ranges.Fe-Mn systems do not form continuous solid solution under solid-state
Body.Diffusion of the manganese in α iron and γ iron is difficult to carry out more than Carbon diffusion.With the increase of manganese content in steel matrix, plating
The thickness of alloy-layer and hardness reduce after aluminium.Mn percentage compositions control range is in the present invention：0.10%≤Mn≤1.20%.
Silicon (Si)：Silicon in steel can stop the growth of alloy-layer, and the thickness of alloy-layer can be greatly lowered, and improve in steel
Silicone content can reduce the hardness of alloy-layer.But Si too high levels, surface of steel plate easily generate oxide, and the oxide of silicon can influence steel
The coating performance of plate causes the bad defect of coating.Si percentage compositions control range is≤0.080% in the present invention.
Phosphorus (P)：Phosphorus is the effective element of reinforcing to steel, but when additive amount is more than 0.050%, the table generated due to hot rolling
The stripping of face oxide layer (oxide skin) becomes excessive, and the surface texture after plating is deteriorated.P percentage compositions control range in the present invention
It is≤0.020%.
Sulphur (S)：S is harmful element in general, so that steel is generated red brittleness, reduces the ductility and toughness of steel,
Crackle is caused when forging and rolling, influences cold-reduced sheet alramenting film quality, it is desirable that S contents are as low as possible, therefore the present invention is most
Amount controls the S percentage compositions of steel grade below 0.015%.
Aluminium (Al)：Al is as main deoxidier, while aluminium also has certain effect to crystal grain thinning.The shortcomings that aluminium is to influence steel
Hot-working character, welding performance and cutting performance.The present invention controls the control of Al percentage compositions 0.020~0.055%.
Nitrogen (N)：N can improve the intensity of steel, low-temperature flexibility and weldability, increase aging sensitivity.The present invention is by the N of steel grade
Percentage composition controls below 0.0050%.
Titanium (Ti) and niobium (Nb)：Titanium, niobium are strong C, N compound formation elements, and it is fixed steel that titanium and the purpose of niobium are added in steel
In interstitial atom C and N, purify ferrite matrix, to make steel grade of the present invention have good deep drawability.Meanwhile niobium, titanium
Addition can play the role of that precipitation strength and crystal grain thinning is precipitated, and the compound addition of niobium, titanium is conducive to the heat of surface of steel plate
It is zinc-plated.So its content is limited to titanium：≤ 0.10%, niobium：≤ 0.10%.
When immersion plating liquid be fine aluminium when coating alloy-layer it is very thick is embedded on iron-based body in ligule, coating it is hard and it is crisp hardly
It can carry out secondary operation.By adding element silicon in the plating solution, the formation of ligule tissue can be inhibited, reduce alloy layer thickness.
And the thickness of diffusion layer is a key factor for influencing aluminum-plated steel resistance to high temperature oxidation in aluminium silicon cladding, in same oxidizing condition
Under, silicone content more high anti-oxidation ability is poorer in aluminium silicon cladding sample.Because the diffusion layer of its higher aluminum-plated steel of the content of silicon is more
Thin, oxidation resistance certainly will be poorer.When coating is siliceous less, alloy is mutually mainly made of Fe2Al5, and Fe2Al5 is orthogonal type
Crystal structure, C axis are entirely to have about 30% vacancy occupied by aluminium atom, this also illustrates when aluminizing η-Fe2Al5 along specific
Direction rapid growth.With the growth of high-temperature oxydation time, along be that the increase of alloy-layer thickens, especially Fe2Al5 layers
Grow up.So that the quantity of keyhole formation declines, the time that aperture is gathered into hole increases for the growth of alloy-layer.When coating is siliceous
When higher, the presence of Si changes the phase structure of alloy-layer, is become based on Fe-Al based on Fe-Al-Si phases from original
On the other hand body has been greatly reduced alloy layer thickness.Due to during heating thermal shock and alloy-layer in the hole that generates
Hole is grown up and is concentrated and the brittleness of Fe-Al phases and Fe-Al-Si phases, and many places in alloy-layer all produce fine fisssure
Line.The probability and possibility bigger of micro-crack are generated in relatively thin alloy-layer, therefore oxidation-resistance property is most weak.This patent
Si contents are selected as 3%~8% in plating solution composition.
The presence of iron content adversely affects aluminium silicon cladding appearance in usual aluminium, will be formed when iron content is more than 5%
The matt and all non-uniform coating of thickness and sponginess.Fe contents are selected as 1.0%~3.0% in this patent plating solution composition.
Rare earth is surface reactive material, the mobility that molten aluminum surface tension improves molten aluminum can be reduced, so as to improve molten aluminum pair
The wettability of steel matrix, to obtain the good coating of surface quality.Content of rare earth 0.05%~0.2%；It is added in molten aluminum micro-
The magnesium of amount, it is Al and a small amount of inevitable impurity that can make reduction alloy layer thickness, Mg contents 0.05%~0.2%, surplus.
Steel band enters aluminum pot after being come out from Lu Bichu, and bath temperature is higher, and atom diffusivity is stronger, atoms permeating thickness
Increase；The immersion plating time is longer, and atoms permeating number is more, and diffusion length is remoter, and thickness of coating also increases.If the temperature of molten aluminum
Higher, aluminium can accelerate to react with the iron of matrix, form thicker alloy-layer, adversely affected to the binding force of coating.Molten aluminum
Temperature it is too low, then its poor fluidity, aluminum layer thickness control is more difficult and more coarse.
Compared with prior art, the present invention by control aluminize the substrate ingredient of silicon steel plate, annealing process, plating solution composition and
Immersion plating technology etc. produces the hot-dip aluminizing silicon steel plate with superior heat resistance, high-temperature oxidation.
Description of the drawings
Fig. 1 is the aluminium silicon cladding section produced by the invention with superior heat resistance, high-temperature oxidation hot-dip coated steel sheet
Pattern；
Fig. 2 has the aluminium silicon cladding of superior heat resistance, high-temperature oxidation hot-dip coated steel sheet in 500 to be produced by the invention
DEG C heating rear surface situation.
Specific implementation mode
Embodiment 1-4
One kind having superior heat resistance, high-temperature oxidation hot-dip coated steel sheet, including substrate and coating, the substrate contain
Following mass percentage chemical composition is：1 is see the table below, surplus is Fe and inevitable impurity.
The coating contains the chemical composition of following mass percentage：2 are see the table below, surplus is inevitable for Al and on a small quantity
Impurity.
1 embodiment 1-4 substrate chemical compositions of table, wt%
| C | Si | Mn | P | S | Als | N | Nb | Ti | |
| Embodiment 1 | 0.090 | 0.020 | 0.30 | 0.013 | 0.008 | 0.048 | 0.0034 | 0.008 | 0.008 |
| Embodiment 2 | 0.050 | 0.015 | 0.45 | 0.007 | 0.006 | 0.040 | 0.0019 | 0.015 | 0.010 |
| Embodiment 3 | 0.020 | 0.070 | 0.25 | 0.010 | 0.002 | 0.035 | 0.0027 | 0.040 | 0.020 |
| Embodiment 4 | 0.015 | 0.060 | 0.10 | 0.010 | 0.003 | 0.036 | 0.0009 | 0.005 | 0.060 |
2 embodiment 1-4 coating chemical compositions of table, wt%
| Si | Fe | La | Mg | |
| Embodiment 1 | 4.0% | 1.1% | 0.15% | 0.15% |
| Embodiment 2 | 3.8% | 1.3% | 0.05% | 0.10% |
| Embodiment 3 | 3.5% | 1.4% | 0.15% | 0.10% |
| Embodiment 4 | 3.4% | 1.3% | 0.10% | 0.06% |
The above-mentioned production method with superior heat resistance, high-temperature oxidation hot-dip coated steel sheet, includes the following steps：
1) molten iron pre-processes：It skims before it is required that and skims with after.
2) converter smelting：It is not added with the pig iron, slag steel；It is tapped using self-loopa steel scrap, strengthens converter dephosphorization, reinforce pushing off the slag behaviour
Make；Tapping process adds lime, without deoxidation.
3) alloy fine tuning station：Carry out ladle top slag modification.
4) RH stoves refine：RH is then blown into oxygen according to temperature and oxygen position if you need to oxygen blast using light treatment process in the prometaphase
Gas；The broken unprecedented guarantee net circulation time is not less than 6min.
5) continuous casting：Middle packet target temperature control is 20~40 DEG C more than liquidus temperature.
6) control of strand tapping temperature is at 1230 DEG C.
7) hot rolling：Six rack tandem rollings, primary, secondary entrance high pressure descaling.
8) finishing temperature control see the table below 3.
9) oiler temperature control see the table below 3.
10) hard volume surface roughness Ra value is rolled in the complete six rollers cold continuous rolling cold rolling of five racks, cold rolling total reduction control 80%
Control is at 0.4~1.6 μm.Effectively to remove the impurity such as cold-rolled steel sheet belt steel surface ROLLING OIL and iron powder, so that strip is to clean
Surface enter vertical annealing furnace, the cleaning is specially：Degreaser is a concentration of in alkaline bath：1.4%, temperature is 80 DEG C；Electricity
It is a concentration of to solve degreaser in rinse bath：5%, temperature is 80 DEG C.
11) continuous annealing：Restore furnace atmosphere is by volumn concentration：H2：5%, surplus N2；Dew point controls in stove
At -50 DEG C, soaking temperature control see the table below 3.
12) Hot-dip aluminum-silicon：Bath temperature is 700 DEG C, and it is 700 DEG C that steel plate, which enters pot temperature, and the immersion plating time is 4s.Pass through gas
Knife, immersion plating technology etc. control coating single side weight in 40g/m2.The silicon steel plate that will aluminize carries out cooling treatment, cooling rate through wind turbine
50 DEG C/s, to control the thickness of alloy-layer and the size of surface zinc flower.By the above-mentioned silicon steel plate of aluminizing through cooling treatment in finishing
Finishing straightening is carried out under machine.
13) finishing and straightening：Finishing elongation control is in 0.5%-1.2%, and straightening elongation control is in 0.2%-
0.8%.
The silicon steel plate of aluminizing produced using the production technology is excellent in heat-resisting and pyro-oxidation resistance, and 500 DEG C of heating are protected
Rear surface aberration situation is Δ L=0.44, Δ b=-1.69, Δ E=1.77 to temperature for 24 hours.Oxidation weight gain after 900 DEG C of heating and thermal insulation 1h
Only 0.6mg/m2。
3 production technology of table and product mechanical property
Above description has only carried out specific exemplary description to the present invention, it should be noted that concrete implementation of the present invention
It is not subject to the restrictions described above, as long as using the various unsubstantialities that technical concept of the invention and technical solution carry out
Improve, or it is not improved the technical concept of the present invention and technical solution are directly applied into other occasions, the present invention's
Within protection domain.
Claims (10)
1. one kind having superior heat resistance, high-temperature oxidation hot-dip coated steel sheet, including substrate and coating, which is characterized in that institute
It states substrate and contains following mass percentage chemical composition and be：C：≤ 0.25%；Si：≤ 0.080%；0.10%≤Mn≤
1.20%；P：≤ 0.020%；S：≤ 0.015%；Al：0.020%~0.055%；N：≤ 0.0050%；Ti：≤ 0.10%；
Nb：≤ 0.10%, surplus is Fe and inevitable impurity；The coating contains the chemical composition of following mass percentage：
Si 3-5%, Fe1.0%~3.0%, La 0.05%~0.2%, Mg 0.05%~0.2%, surplus are Al and on a small quantity can not
The impurity avoided.
2. a kind of production method described in claim 1 with superior heat resistance, high-temperature oxidation hot-dip coated steel sheet, special
Sign is that the production method includes the following steps：
1) molten iron pre-processes；
2) converter smelting；
3) alloy fine tuning station；
4) RH stoves refine；
5) continuous casting；
6) strand is come out of the stove；
7) hot rolling；
8) finish to gauge；
9) it batches；
10) cold rolling and cleaning；
11) continuous annealing；
12) then Hot-dip aluminum-silicon cools down；
13) finishing and straightening.
3. production method according to claim 2, which is characterized in that step 5) continuous casting：Middle packet target temperature control is in liquid
More than liquidus temperature 20~40 DEG C, step 6) strand tapping temperature is controlled at 1160 DEG C~1260 DEG C.
4. production method according to claim 2, which is characterized in that step 7) hot rolling：Six rack tandem rollings, it is primary, secondary
Entrance high pressure descaling, step 8) finishing temperature control is at 850 DEG C~950 DEG C.
5. production method according to claim 2, which is characterized in that step 9) oiler temperature control is 680 DEG C~760
℃。
6. production method according to claim 2, which is characterized in that the control of step 10) cold rolling total reduction 50%~
80%, hard volume surface roughness Ra value control is rolled at 0.4~1.6 μm.
7. the production method according to claim 2 or 6, which is characterized in that step 10) it is described cleaning be specially：Alkaline bath
Interior degreaser is a concentration of：1~2%, temperature is 70~90 DEG C；Degreaser is a concentration of in electrolytic cleaning tank：3~8%, temperature 70
~90 DEG C.
8. production method according to claim 2, which is characterized in that step 11) continuous annealing：Reduction furnace atmosphere presses body
Accumulating percentage composition is：H2：5%~10%, surplus N2；At -20~-50 DEG C, soaking temperature is controlled 720 for dew point control in stove
DEG C~850 DEG C.
9. production method according to claim 2, which is characterized in that step 12) Hot-dip aluminum-silicon：Bath temperature is 640
~720 DEG C, it is 640~720 DEG C that steel plate, which enters pot temperature, and the immersion plating time is 2~5s.
10. the production method according to claim 2 or 9, which is characterized in that by the silicon steel of aluminizing after step 12) hot-dip
Plate carries out cooling treatment, 20 DEG C/s-80 DEG C/s of cooling rate through wind turbine.
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