CN106591707A - Titanium-containing low-nickel high-strength weathering steel and production method thereof - Google Patents
Titanium-containing low-nickel high-strength weathering steel and production method thereof Download PDFInfo
- Publication number
- CN106591707A CN106591707A CN201611182590.XA CN201611182590A CN106591707A CN 106591707 A CN106591707 A CN 106591707A CN 201611182590 A CN201611182590 A CN 201611182590A CN 106591707 A CN106591707 A CN 106591707A
- Authority
- CN
- China
- Prior art keywords
- production method
- weathering steel
- steel
- titaniferous
- strength
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 40
- 229910000870 Weathering steel Inorganic materials 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 19
- 239000010936 titanium Substances 0.000 title abstract description 19
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title abstract description 6
- 238000005096 rolling process Methods 0.000 claims abstract description 35
- 238000010438 heat treatment Methods 0.000 claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 238000007670 refining Methods 0.000 claims abstract description 20
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 19
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 16
- 238000009749 continuous casting Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000003723 Smelting Methods 0.000 claims abstract description 11
- 239000012535 impurity Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052802 copper Inorganic materials 0.000 claims description 18
- 229910052748 manganese Inorganic materials 0.000 claims description 13
- 229910052717 sulfur Inorganic materials 0.000 claims description 12
- 238000005098 hot rolling Methods 0.000 claims description 10
- 239000011575 calcium Substances 0.000 claims description 9
- 229910052791 calcium Inorganic materials 0.000 claims description 9
- 238000010583 slow cooling Methods 0.000 claims description 9
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 8
- 238000005275 alloying Methods 0.000 claims description 8
- 238000010079 rubber tapping Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 4
- 230000002441 reversible effect Effects 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 abstract description 9
- 238000005260 corrosion Methods 0.000 abstract description 9
- 229910052799 carbon Inorganic materials 0.000 abstract description 6
- 229910001069 Ti alloy Inorganic materials 0.000 abstract 1
- 238000005272 metallurgy Methods 0.000 abstract 1
- 239000011651 chromium Substances 0.000 description 17
- 239000010949 copper Substances 0.000 description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 239000011572 manganese Substances 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 8
- 238000005452 bending Methods 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 235000019628 coolness Nutrition 0.000 description 6
- 239000004615 ingredient Substances 0.000 description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- QBOJHTWGYDLINP-UHFFFAOYSA-N [Ti].[P].[Cr].[Cu] Chemical class [Ti].[P].[Cr].[Cu] QBOJHTWGYDLINP-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- CXCBJSTXZQPTLV-UHFFFAOYSA-N O.[Fe].[Ti].[V] Chemical compound O.[Fe].[Ti].[V] CXCBJSTXZQPTLV-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000000758 substrate 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- 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
- 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
- C22C38/02—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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium 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
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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 Sheet Steel (AREA)
Abstract
The invention discloses titanium-containing low-nickel high-strength weathering steel and a production method thereof, and belongs to the technical field of metallurgy. The titanium-containing low-nickel high-strength weathering steel comprises, by weight, 0.07-0.12% of C, no more than 0.45% of Si, no more than 0.7% of Mn, 0.06-0.15% of P, no more than 0.012% of S, 0.25-0.45% of Cu, 0.35-0.65% of Cr, no more than 0.15% of Ni, 0.04-0.08% of Ti, 0.010-0.050% of Als, and the balance Fe and inevitable impurities. The production method includes the following steps of converter smelting, LF refining, slab continuous casting, slab heating, high-pressure water descaling, controlled rolling, controlled cooling and coiling. A hot-rolled coiled plate produced through the production method adopts the Cu-Cr-P-Ti alloy component system, and corrosion resistance of the steel is guaranteed; and the weathering steel produced through the production method has the characteristics of being low in production cost, simple in process and excellent in comprehensive performance.
Description
Technical field
The invention belongs to technical field of ferrous metallurgy, and in particular to a kind of low nickel high-strength weathering steel of titaniferous and its producer
Method.
Background technology
Weathering steel is weather resisting steel, belongs to low-alloy steel, be widely used in railway, vehicle, electric power pylon, ocean put down
The engineering component that platform and long-term outdoor are used, for manufacturing the structures such as container, rail truck, production platform and harbour building
Part.Weathering steel adds the alloying elements such as a small amount of copper, phosphorus, chromium, nickel by straight carbon steel so that steel one layer of 50-100 μ m-thick of formation
Dense oxide layer, prevents oxygen and water in air to the infiltration of steel substrate, greatly improving the atmospheric corrosion resistance energy of ferrous materials
Power.
CN200810046963.X is for the too high shortcoming of C content, there is provided a kind of yield strength is more than 450MPa levels
Ultra-low carbon hot rolling weather-resisting steel, the alloying component and weight percent content of the weathering steel are：C：0.01～0.05%, Si：0.10～
0.40%, Mn：1.50～1.90%, P≤0.02%, S≤0.010%, Cu：0.15～0.55%, Cr：0.20～0.80%, Ni：0.10
～0.50%, Mo：0.05～0.50%, Nb：0.01～0.05%, Ca：0.0010～0.0020%, balance of Fe and inevitably
Impurity.The intensity rank of the invention steel grade is higher than traditional weathering steel, due to being designed using Ultra-low carbon, its impact flexibility, weldability
It is excellent with atmospheric corrosion resistance.But the addition of various alloying elements and Ultra-low carbon require to increased refining when such weathering steel is designed
Steel process cost.
Chinese patent application 201510801812.0 discloses high chromium weathering steel of a kind of titaniferous and preparation method thereof, belongs to iron and steel
Field of smelting, the alloying component and weight percent content of the weathering steel are：C≤0.07%, Si≤0.50%, Mn≤1.5%, P≤
0.02%, S≤0.010%, Cu：0.20～0.55%, Cr：3.00～5.50%, Ni：0.10～0.65%, Ti：0.04～0.10%,
Balance of Fe and inevitable impurity.Manganese content is high in the patent, and chromium content is high, although the weather resistance of the steel of raising, but
The Cr of high-load is not only greatly enhanced smelting cost and difficulty, and the processability to steel can have adverse effect on.
The content of the invention
To solve above-mentioned technical problem present in this area, the present invention provides a kind of excellent product performance, production technology
Simply, low production cost, the low nickel high-strength weathering steel of the titaniferous with good economic benefits and its production method.
A kind of low nickel high-strength weathering steel of titaniferous provided by the present invention, the coil of strip chemical composition and percentage by weight it is as follows：
C：0.07～0.12%, Si≤0.45%, Mn≤0.7%, P：0.06～0.15%, S≤0.012%, Cu：0.25～0.45%, Cr：
0.35～0.65%, Ni≤0.15%, Ti：0.04～0.08%, Als：0.010～0.050%, balance of Fe are miscellaneous with inevitable
Matter.
Low nickel high-strength weathering steel yield strength 415-540MPa of titaniferous of the present invention, tensile strength 520-750MPa.
Low nickel high-strength weathering steel elongation percentage >=27% of steel titaniferous of the present invention.
Another object of the present invention is to provide a kind of above-mentioned titaniferous low nickel high-strength weathering steel production method, including following steps
Suddenly：Converter smelting, LF refining, sheet billet continuous casting, heating of plate blank, high-pressure water descaling, controlled rolling, controlled rolling cooling is batched, the plate
Base continuous casting working procedure obtains slab, and the slab chemical composition and percentage by weight are as follows：C：0.07～0.12%, Si≤0.45%,
Mn≤0.7%, P：0.06～0.15%, S≤0.012%, Cu：0.25～0.45%, Cr：0.35～0.65%, Ni≤0.15%, Ti：
0.04～0.08%, Als：0.010～0.050%, balance of Fe and inevitable impurity.
During heating of plate blank of the present invention, stove is sent into using straight dress heat, heat send temperature >=600 DEG C, heating of plate blank to 1200-
1250 DEG C, slab tapping temperature 1250-1270 DEG C, heat time heating time is 100-150min in stove.
Controlled rolling operation of the present invention, roughing operation is reversible rolling mode, and the passage of controlled rolling 5, roughing goes out
Mouth temperature 1090-1120 DEG C.
Controlled rolling operation of the present invention, finishing rolling step, using 7 frame continuous-rolling controlled rollings, finishing temperature is
860-900℃。
Controlled rolling refrigerating work procedure of the present invention, section cooling speed is 25-30 DEG C/s.
Coiling process of the present invention, coiling temperature is 560-600 DEG C, offline rear hot rolling stacking slow cooling.
LF refining operation of the present invention, ferrotianium carries out alloying before LF refining Calcium treatment；The sheet billet continuous casting operation,
Continuous casting cooling twice is cast using weak cold, pulling rate >=1.0min, using whole process protection.
The mentality of designing of the present invention：
By using copper-chromium-phosphorus-titanium series alloy, the corrosion resistance and welding performance of steel are improved；Nickel in by reducing steel
Content and titanium reinforcing reduce the addition of manganese alloy, reduces cost.
Current weathering steel is mainly designed by adding the alloying elements such as corrosion resistant copper, phosphorus, chromium, nickel, molybdenum, is
Improve corrosion resisting property and reduce because copper produces cracking defect in steel surface, it is necessary to add valuable chromium, nickel element；For
The high phenomenons of steel vanadium-titanium-iron-water P are held, to this exploitation weathering steel containing P, using Cu-Cr-P-Ti systems alloying component system, can be reduced
Converter dephosphorization is born, while being strengthened using P, had both been improve corrosion resistance and has been also improved intensity；The too high impact welding performance of carbon content,
Too low impact intensity and steel-making cost, using low-carbon (LC) composition design weldability is ensured；By a small amount of Ni of addition or without simultaneously
Send technique to weaken " copper causes surface fire check " with reference to straight dress heat, reduce the purpose of cost of alloy；Addition titanium is titanium and nitrogen
Play crystal grain thinning to improve intensity with reference to precipitation, while nomadic nitrogen is changed into into fixed nitrogen and being avoided aging phenomenon and being enhanced
Crystal boundary resistance to corrosion, so as to improve overall performance.Directly fill that heat is sent, heating furnace high-temperature is quickly heated using slab, it is short plus
The hot time prevents Cu Selective separation-outs and oxidation from causing copper brittleness and grain-boundary weakness, using relatively low coiling temperature and rolling rear slow cooling
Technique reduces the cold short phenomenon that P causes, and strictly controls hot rolling procedure parameter, it is ensured that the combination property of weathering steel.Adopt
Replace part Cu, Ni, Cr of high price etc. with P, Ti of low price, i.e., using copper-chromium-phosphorus-titanium system, both reduced cost, also ensure
The corrosion resistance of steel.
It is using the beneficial effect produced by above-mentioned technical proposal：The low nickel high-strength weathering steel yield strength of titaniferous of the present invention
415-540MPa, tensile strength 520-750MPa, elongation percentage >=27%, 180 DEG C of d=a bendings are qualified.The present invention produces weather-proof
Steel coil of strip, using low nickel-content, micro- titanium is strengthened to reduce Mn contents for making weathering steel steel plate, using new technological process,
By rolling mill practice control, the good weathering steel steel plate of properties is obtained, and realize industrialized production.
Specific embodiment
With reference to specific embodiment, the present invention is further detailed explanation.
Embodiment 1
A kind of low nickel weathering steel coil of strip of titaniferous, Ingredient percent is C：0.08%, Si：0.42%, Mn：0.68%, P：
0.145%, S：0.003%, Cu：0.26%, Cr：0.63%, Ni：0.01%, Ti：0.075%, Als：0.015%, balance of Fe and not
Impurity can be avoided.
Using converter smelting, LF refining, sheet billet continuous casting, heating of plate blank, high-pressure water descaling, controlled rolling, controlled rolling cooling, volume
Production technology is taken, is produced 3 minutes before LF refining Calcium treatment and is added ferrotianium, pulling rate is 1.0m/min, and heat send 620 DEG C of temperature, plate
1250 DEG C of base tapping temperature, in stove heat time heating time be 145min, qualified heating of plate blank to 1220 DEG C.The passage of roughing 5 outlet temperature
Spend for 1105 DEG C, exit temperature at finishing is 865 DEG C, through 25 DEG C/s coolings, coiling temperature is 575 DEG C, offline rear hot rolling stacking
Slow cooling.It is 420MPa to obtain qualified coil of strip yield strength, and tensile strength is 545MPa, and elongation percentage 36%, 180 DEG C of d=a bendings are closed
Lattice.
Embodiment 2
A kind of low nickel weathering steel coil of strip of titaniferous, Ingredient percent is C：0.09%, Si：0.36%, Mn：0.60%, P：0.12%,
S：0.003%, Ni：0.05%, Cr：0.52%, Cu：0.31%, Ti：0.06%, Als：0.025%, balance of Fe and inevitable miscellaneous
Matter.
Using converter smelting, LF refining, sheet billet continuous casting, heating of plate blank, high-pressure water descaling, controlled rolling, controlled rolling cooling, volume
Production technology is taken, is produced 2 minutes before LF refining Calcium treatment and is added ferrotianium, pulling rate is 1.1m/min, and heat send 640 DEG C of temperature, plate
1257 DEG C of base tapping temperature, heat time heating time is 135min in stove, and qualified heating of plate blank to 1250 DEG C, the passage of roughing 5 outlet is warm
Spend for 1120 DEG C, exit temperature at finishing is 895 DEG C, through 28 DEG C/s coolings, coiling temperature is 595 DEG C, offline rear hot rolling stacking
Slow cooling.It is 470MPa to obtain qualified coil of strip yield strength, and tensile strength is 600MPa, and elongation percentage 33%, 180 DEG C of d=a bendings are closed
Lattice.
Embodiment 3
A kind of low nickel weathering steel coil of strip of titaniferous, Ingredient percent is C：0.10%, Si：0.28%, Mn：0.49%, P：0.09%,
S：0.001%, Cu：0.38%, Cr：0.45%, Ni：0.10%, Ti：0.051%, Als：0.036%, balance of Fe and inevitable miscellaneous
Matter.
Using converter smelting, LF refining, sheet billet continuous casting, heating of plate blank, high-pressure water descaling, controlled rolling, controlled rolling cooling, volume
Production technology is taken, is produced 3 minutes before LF refining Calcium treatment and is added ferrotianium, pulling rate is 1.2m/min, and heat send 650 DEG C of temperature, plate
1263 DEG C of base tapping temperature, in stove heat time heating time be 120min, qualified heating of plate blank to 1240 DEG C.The passage of roughing 5 outlet temperature
Spend for 1110 DEG C, exit temperature at finishing is 885 DEG C, through 29 DEG C/s coolings, coiling temperature is 580 DEG C, offline rear hot rolling stacking
Slow cooling.It is 500MPa to obtain qualified coil of strip yield strength, and tensile strength is 665MPa, and elongation percentage 30%, 180 DEG C of d=a bendings are closed
Lattice.
Embodiment 4
A kind of low nickel weathering steel coil of strip of titaniferous, Ingredient percent is C：0.115%, Si：0.15%, Mn：0.40%, P：
0.064%, S：0.001%, Cu：0.44%, Cr：0.36%, Ni：0.14%, Ti：0.042%、Als：0.048%, balance of Fe and not
Impurity can be avoided.
Using converter smelting, LF refining, sheet billet continuous casting, heating of plate blank, high-pressure water descaling, controlled rolling, controlled rolling cooling, volume
Production technology is taken, is produced 2 minutes before LF refining Calcium treatment and is added ferrotianium, pulling rate is 1.25m/min, and heat send 670 DEG C of temperature, plate
1270 DEG C of base tapping temperature, in stove heat time heating time be 105min, qualified heating of plate blank to 1210 DEG C.The passage of roughing 5 outlet temperature
Spend for 1095 DEG C, exit temperature at finishing is 875 DEG C, through 30 DEG C/s coolings, coiling temperature is 565 DEG C, offline rear hot rolling stacking
Slow cooling.It is 535MPa to obtain qualified coil of strip yield strength, and tensile strength is 730MPa, and elongation percentage 27%, 180 DEG C of d=a bendings are closed
Lattice.
Embodiment 5
A kind of low nickel weathering steel coil of strip of titaniferous, Ingredient percent is C：0.07%, Si：0.45%, Mn：0.6%, P：0.15%,
S：0.012%, Cu：0.45%, Cr：0.35%, Ni：0.10%, Ti：0.04%, Als：0.010%, balance of Fe and inevitably
Impurity.
Using converter smelting, LF refining, sheet billet continuous casting, heating of plate blank, high-pressure water descaling, controlled rolling, controlled rolling cooling, volume
Production technology is taken, is produced 2 minutes before LF refining Calcium treatment and is added ferrotianium, pulling rate is 1.2m/min, and heat send 600 DEG C of temperature, plate
1270 DEG C of base tapping temperature, in stove heat time heating time be 100min, qualified heating of plate blank to 1200 DEG C.The passage of roughing 5 outlet temperature
Spend for 1090 DEG C, exit temperature at finishing is 860 DEG C, through 36 DEG C/s coolings, coiling temperature is 560 DEG C, offline rear hot rolling stacking
Slow cooling.It is 530MPa to obtain qualified coil of strip yield strength, and tensile strength is 727MPa, and elongation percentage 34%, 180 DEG C of d=a bendings are closed
Lattice.
Embodiment 6
A kind of low nickel weathering steel coil of strip of titaniferous, Ingredient percent is C：0.12%, Si：0.31%, Mn：0.7%, P：0.06%,
S：0.008%, Cu：0.25%, Cr：0.65%, Ni：0.15%, Ti：0.08%, Als：0.050%, balance of Fe and inevitably
Impurity.
Using converter smelting, LF refining, sheet billet continuous casting, heating of plate blank, high-pressure water descaling, controlled rolling, controlled rolling cooling, volume
Production technology is taken, is produced 3 minutes before LF refining Calcium treatment and is added ferrotianium, pulling rate is 1.15m/min, and heat send 620 DEG C of temperature, plate
1270 DEG C of base tapping temperature, in stove heat time heating time be 150min, qualified heating of plate blank to 1235 DEG C.The passage of roughing 5 outlet temperature
Spend for 1110 DEG C, exit temperature at finishing is 900 DEG C, through 29 DEG C/s coolings, coiling temperature is 600 DEG C, offline rear hot rolling stacking
Slow cooling.It is 540MPa to obtain qualified coil of strip yield strength, and tensile strength is 740MPa, and elongation percentage 27%, 180 DEG C of d=a bendings are closed
Lattice.
Above example is only to illustrative and not limiting technical scheme, although reference above-described embodiment is to this
It is bright to be described in detail, it will be understood by those within the art that：Still the present invention can be modified or be waited
With replacing, any modification or partial replacement without departing from the spirit and scope of the present invention, it all should cover the power in the present invention
In the middle of sharp claimed range.
Claims (10)
1. the low nickel high-strength weathering steel of a kind of titaniferous, it is characterised in that the coil of strip chemical composition and percentage by weight are as follows：C：
0.07～0.12%, Si≤0.45%, Mn≤0.7%, P：0.06～0.15%, S≤0.012%, Cu：0.25～0.45%, Cr：0.35
～0.65%, Ni≤0.15%, Ti：0.04～0.08%, Als：0.010～0.050%, balance of Fe and inevitable impurity.
2. the low nickel high-strength weathering steel of a kind of titaniferous according to claim 1, it is characterised in that the low nickel of the titaniferous is high-strength resistance to
Wait steel yield strength 415-540MPa, tensile strength 520-750MPa.
3. the low nickel high-strength weathering steel of a kind of titaniferous according to claim 1, it is characterised in that the low nickel of the titaniferous is high-strength resistance to
Wait steel elongation percentage >=27%.
4. the production method based on the low nickel high-strength weathering steel of a kind of titaniferous described in right 1-3 any one, comprises the steps：
Converter smelting, LF refining, sheet billet continuous casting, heating of plate blank, high-pressure water descaling, controlled rolling, controlled rolling cooling is batched, and its feature exists
In the sheet billet continuous casting operation obtains slab, and the slab chemical composition and percentage by weight are as follows：C：0.07～0.12%, Si
≤ 0.45%, Mn≤0.7%, P：0.06～0.15%, S≤0.012%, Cu：0.25～0.45%, Cr：0.35～0.65%, Ni≤
0.15%, Ti：0.04～0.08%, Als：0.010～0.050%, balance of Fe and inevitable impurity.
5. production method according to claim 4, it is characterised in that during the heating of plate blank, using straight dress heat stove is sent into,
Heat send temperature >=600 DEG C, heating of plate blank to 1200-1250 DEG C, slab tapping temperature 1250-1270 DEG C, heat time heating time is in stove
100-150min。
6. production method according to claim 4, it is characterised in that the controlled rolling operation, roughing operation is reversible
Formula rolling mode, the passage of controlled rolling 5, roughing outlet temperature 1090-1120 DEG C.
7. production method according to claim 4, it is characterised in that the controlled rolling operation, finishing rolling step adopts 7
Frame continuous-rolling controlled rolling, finishing temperature is 860-900 DEG C.
8. the production method according to claim 4-7 any one, it is characterised in that the controlled rolling refrigerating work procedure, laminar flow
Rate of cooling is 25-30 DEG C/s.
9. the production method according to claim 4-7 any one, it is characterised in that the coiling process, coiling temperature
For 560-600 DEG C, offline rear hot rolling stacking slow cooling.
10. the production method according to claim 4-7 any one, it is characterised in that the LF refining operation, ferrotianium exists
Alloying is carried out before LF refining Calcium treatment；The sheet billet continuous casting operation, continuous casting cooling twice using weak cold, pulling rate >=1.0min,
Cast using whole process protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611182590.XA CN106591707A (en) | 2016-12-20 | 2016-12-20 | Titanium-containing low-nickel high-strength weathering steel and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611182590.XA CN106591707A (en) | 2016-12-20 | 2016-12-20 | Titanium-containing low-nickel high-strength weathering steel and production method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106591707A true CN106591707A (en) | 2017-04-26 |
Family
ID=58599803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611182590.XA Pending CN106591707A (en) | 2016-12-20 | 2016-12-20 | Titanium-containing low-nickel high-strength weathering steel and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106591707A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107881429A (en) * | 2017-11-16 | 2018-04-06 | 北京首钢股份有限公司 | A kind of hot rolling high-strength weathering steel and its manufacture method |
| CN109234617A (en) * | 2018-09-12 | 2019-01-18 | 河钢股份有限公司承德分公司 | A kind of no nickel hot rolling thin gauge weathering steel volume and its production method |
| CN109536830A (en) * | 2018-11-26 | 2019-03-29 | 河钢股份有限公司承德分公司 | 550MPa grades of titaniferous thin gauge weathering steels of yield strength and its production method |
| CN110747393A (en) * | 2019-09-30 | 2020-02-04 | 鞍钢股份有限公司 | A kind of ATM automatic teller machine high-strength steel plate and its manufacturing method |
| CN114107635A (en) * | 2021-10-13 | 2022-03-01 | 石钢京诚装备技术有限公司 | Method for controlling cracks of low-alloy copper-containing steel |
| CN115305410A (en) * | 2022-08-12 | 2022-11-08 | 张家港扬子江冷轧板有限公司 | High-weather-resistance high-strength steel for thin 700 MPa-grade carriage and preparation method thereof |
| CN115418566A (en) * | 2022-08-30 | 2022-12-02 | 日照钢铁控股集团有限公司 | Manufacturing method of low-cost high-P weathering steel |
| CN115572893A (en) * | 2022-09-02 | 2023-01-06 | 武汉钢铁有限公司 | Atmospheric corrosion resistant high-strength steel for automobile spoke and manufacturing method thereof |
| CN115612921A (en) * | 2022-09-02 | 2023-01-17 | 武汉钢铁有限公司 | 600 MPa-grade automobile wheel steel with good corrosion resistance and manufacturing method thereof |
| CN115786822A (en) * | 2023-01-13 | 2023-03-14 | 山西建龙实业有限公司 | High-strength weathering steel for photovoltaic support and preparation method thereof |
| CN115889454A (en) * | 2022-05-09 | 2023-04-04 | 湖南湘投金天钛金属股份有限公司 | Preparation method of pure nickel hot rolled strip coil |
| CN119464962A (en) * | 2025-01-16 | 2025-02-18 | 江苏沙钢集团有限公司 | Corrosion-resistant offshore steel plate and production method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1752260A (en) * | 2005-10-10 | 2006-03-29 | 燕山大学 | Hot-rolled dual-phase weather-resistant steel plate and manufacturing method thereof |
| JP2008280608A (en) * | 2007-04-13 | 2008-11-20 | Jfe Steel Kk | High-strength hot-dip galvanized steel sheet excellent in workability and weldability, and its manufacturing method |
| CN101994064A (en) * | 2009-08-18 | 2011-03-30 | 宝山钢铁股份有限公司 | Weathering steel with yield strength of 550MPa level and manufacturing method thereof |
-
2016
- 2016-12-20 CN CN201611182590.XA patent/CN106591707A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1752260A (en) * | 2005-10-10 | 2006-03-29 | 燕山大学 | Hot-rolled dual-phase weather-resistant steel plate and manufacturing method thereof |
| JP2008280608A (en) * | 2007-04-13 | 2008-11-20 | Jfe Steel Kk | High-strength hot-dip galvanized steel sheet excellent in workability and weldability, and its manufacturing method |
| CN101994064A (en) * | 2009-08-18 | 2011-03-30 | 宝山钢铁股份有限公司 | Weathering steel with yield strength of 550MPa level and manufacturing method thereof |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107881429A (en) * | 2017-11-16 | 2018-04-06 | 北京首钢股份有限公司 | A kind of hot rolling high-strength weathering steel and its manufacture method |
| CN107881429B (en) * | 2017-11-16 | 2019-08-20 | 北京首钢股份有限公司 | A kind of hot rolling high-strength weathering steel and its manufacturing method |
| CN109234617A (en) * | 2018-09-12 | 2019-01-18 | 河钢股份有限公司承德分公司 | A kind of no nickel hot rolling thin gauge weathering steel volume and its production method |
| CN109536830A (en) * | 2018-11-26 | 2019-03-29 | 河钢股份有限公司承德分公司 | 550MPa grades of titaniferous thin gauge weathering steels of yield strength and its production method |
| CN110747393A (en) * | 2019-09-30 | 2020-02-04 | 鞍钢股份有限公司 | A kind of ATM automatic teller machine high-strength steel plate and its manufacturing method |
| CN114107635B (en) * | 2021-10-13 | 2023-08-22 | 石钢京诚装备技术有限公司 | Method for controlling cracks of low-alloy copper-containing steel |
| CN114107635A (en) * | 2021-10-13 | 2022-03-01 | 石钢京诚装备技术有限公司 | Method for controlling cracks of low-alloy copper-containing steel |
| CN115889454A (en) * | 2022-05-09 | 2023-04-04 | 湖南湘投金天钛金属股份有限公司 | Preparation method of pure nickel hot rolled strip coil |
| CN115889454B (en) * | 2022-05-09 | 2024-01-30 | 湖南湘投金天钛金属股份有限公司 | Pure nickel hot rolled coil and preparation method thereof |
| CN115305410A (en) * | 2022-08-12 | 2022-11-08 | 张家港扬子江冷轧板有限公司 | High-weather-resistance high-strength steel for thin 700 MPa-grade carriage and preparation method thereof |
| CN115418566A (en) * | 2022-08-30 | 2022-12-02 | 日照钢铁控股集团有限公司 | Manufacturing method of low-cost high-P weathering steel |
| CN115572893A (en) * | 2022-09-02 | 2023-01-06 | 武汉钢铁有限公司 | Atmospheric corrosion resistant high-strength steel for automobile spoke and manufacturing method thereof |
| CN115612921A (en) * | 2022-09-02 | 2023-01-17 | 武汉钢铁有限公司 | 600 MPa-grade automobile wheel steel with good corrosion resistance and manufacturing method thereof |
| CN115612921B (en) * | 2022-09-02 | 2023-10-24 | 武汉钢铁有限公司 | 600 MPa-level automobile wheel steel with good corrosion resistance and manufacturing method thereof |
| CN115786822A (en) * | 2023-01-13 | 2023-03-14 | 山西建龙实业有限公司 | High-strength weathering steel for photovoltaic support and preparation method thereof |
| CN119464962A (en) * | 2025-01-16 | 2025-02-18 | 江苏沙钢集团有限公司 | Corrosion-resistant offshore steel plate and production method thereof |
| CN119464962B (en) * | 2025-01-16 | 2025-04-29 | 江苏沙钢集团有限公司 | Corrosion-resistant marine steel plate and production method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106591707A (en) | Titanium-containing low-nickel high-strength weathering steel and production method thereof | |
| CN113234995B (en) | Ultra-thick hot-rolled H-shaped steel with yield strength of 600MPa and production method thereof | |
| CN106854732B (en) | The high tenacity low-yield-ratio fire resistant weathering steel and its production method of tensile strength >=600MPa | |
| CN103074548B (en) | A kind of high corrosion resistant type high strength is containing Al weather-resistant steel plate and manufacture method thereof | |
| CN102400043B (en) | Large-thickness steel plate for oceaneering | |
| CN104694822A (en) | High-strength hot rolled steel plate with 700 MPa grade yield strength and manufacturing method thereof | |
| CN102876970B (en) | Steel with yield strength larger than or equal to 390 MPa for high-rise buildings and production method of steel | |
| CN101153370A (en) | A low-alloy high-strength steel plate that can be welded with large heat input and its manufacturing method | |
| CN112011737B (en) | 390 MPa-grade-20-DEG C-resistant hot-rolled angle steel for bridge structure and production method thereof | |
| CN102127717A (en) | Cr-contained weathering steel with excellent toughness and high corrosion resistance | |
| CN106435406B (en) | A kind of Millettia pachycarpa weather-resistant steel plate and its manufacturing method | |
| CN113699441B (en) | Flange super-thick hot-rolled H-shaped steel with good low-temperature impact toughness and production method thereof | |
| CN102796967A (en) | 800 MPa economic corrosion-resistance and high-strength steel plate | |
| CN110983187A (en) | Novel high-strength weather-resistant pipeline steel X80 steel plate and production method thereof | |
| CN108796370A (en) | A kind of the welding structure fire-resistant and weather-resistant steel and its production method of yield strength >=690MPa | |
| CN109609845A (en) | A kind of 500MPa grades of weathering steel and its production method | |
| CN101376950A (en) | Superhigh intensity cold rolling weather resisting steel plate and manufacturing method thereof | |
| CN110578085A (en) | Hot-rolled steel plate with yield strength of 500MPa and atmospheric corrosion resistance | |
| JPS5927370B2 (en) | High strength cold rolled steel plate for press working | |
| CN113846269B (en) | Cold-rolled high-weather-resistance steel plate with high strength and plasticity and preparation method thereof | |
| CN110284053A (en) | A kind of high P high-strength tenacity high-weatherability hot continuous rolling steel and its manufacturing method | |
| CN101376953B (en) | High-corrosion resistant high-strength weather resisting steel and manufacturing method thereof | |
| CN101698925A (en) | Low-carbon phosphorus-added high-yield-strength cold rolled steel sheet and manufacturing method thereof | |
| CN104561825A (en) | Low-cost X80 pipeline steel and manufacturing method thereof | |
| CN105112810B (en) | Steel for high heat input resisting welding and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170426 |