CN103131956A - High-strength steel plate with tensile strength of 800 MPa above and manufacturing method thereof - Google Patents
High-strength steel plate with tensile strength of 800 MPa above and manufacturing method thereof Download PDFInfo
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Abstract
The invention provides a high-strength steel plate with tensile strength of 800 MPa above and a manufacturing method thereof. The steel plate produced by the manufacturing method comprises the following components in percentage by weight: 0.08-0.21% of carbon, 0.15-0.45% of silicon, 0.70-1.10% of manganese, at most 0.015% of phosphorus, at most 0.010% of sulfur, 0.40-0.65% of chromium, 0.10-0.25% of molybdenum, 0.030-0.080% of vanadium, 0.010-0.030% of titanium, 0.020-0.050% of aluminum, 0.0005-0.005% of boron, and the balance of iron and inevitable impurities. The tensile strength of the steel plate reaches higher than 800 MPa, the -20 DEG C transverse impact work is not less than 34J, the percentage reduction in area is not less than 45%, and the lateral swelling amount is not less than 0.38 mm; and the invention has the advantages of low cost and favorable welding performance.
Description
Technical field
The invention belongs to metallic substance and make the field, what be specifically related to is that a kind of tensile strength reaches 800MPa above high strength steel plate and manufacture method thereof.
Background technology
Nuclear power is the first-selection of reply climate change.Nuclear power there is no carbon emission, safety, stable, reliable large power supply, it is the irreplaceable strategic choice that realizes the electric power sustainable supply, accelerate the scale development nuclear power and become the state basic policy of our country, Construction of Nuclear Electricity will become the important component part that national critical infrastructures are built.Country is with safe and efficient Nuclear Power Development, and by 2015, total installation of generating capacity will be over 1,600 ten thousand kilowatts; Participate in that generation Ⅲ nuclear power is introduced comprehensively, digestion, absorb, innovation work again.
Nuclear power plants mechanical module strut member is harsh complicated with the steel service condition, and good over-all properties must be arranged.The indexs such as the high-strong toughness energy under purity of steel, internal soundness, low temperature, non-deformability had strict requirement.Steel plate needs to carry out different thermal treatment process after rolling and tests to seek the optimum treatment process parameter, so production process has higher difficulty.
The present invention adopt rational chemical composition design and the quenching+tempering that is complementary thermal treatment process be to guarantee that steel plate has the prerequisite that rational microtexture and every mechanical property satisfy standard.Reasonably thermal treatment process can guarantee that steel plate has uniform microtexture, thereby guarantees that steel plate has the indexs such as good normal tensile property, low-temperature flexibility, guarantees the security that steel plate is using.
Nuclear power need possess higher security with steel, has both simultaneously economy practicality preferably.
Summary of the invention
Technical problem to be solved by this invention, be exactly for the existing deficiency of prior art, and provide a kind of tensile strength to reach 800MPa above high strength steel plate and manufacture method thereof, it is low that the related tensile strength of this scheme reaches the above high strength steel plate cost of alloy of 800MPa, more than tensile strength reaches 800MPa, with low cost, welding property is good; The tensile strength that provides of this scheme reaches the manufacture method of the above high strength steel plate of 800MPa simultaneously, adopts converter smelting, quenching+tempering thermal treatment, makes more than the tensile strength of steel reaches 800MPa.
This programme is achieved by the following technical measures:
Tensile strength reaches the above high strength steel plate of 800MPa, its component and each compositions in weight percentage are: carbon (C) 0.08～0.21%, silicon (Si) 0.15～0.45%, manganese (Mn) 0.70～1.10%, phosphorus (P)≤0.015%, sulphur (S)≤0.010%, chromium (Cr) 0.40～0.65%, molybdenum (Mo) 0.10～0.25%, vanadium (V) 0.030～0.080%, titanium (Ti) 0.010～0.030%, aluminium (Alt) 0.020～0.050%, boron (B) 0.0005～0.005%, surplus is iron and inevitable impurity.
Tensile strength reaches the above high strength steel plate of 800MPa, its preferred version is, its component and each compositions in weight percentage are: carbon (C) 0.015～0.20%, silicon (Si) 0.15～0.35%, manganese (Mn) 0.80～1.00%, phosphorus (P)≤0.015%, sulphur (S)≤0.010%, chromium (Cr) 0.40～0.60%, molybdenum (Mo) 0.10～0.20%, vanadium (V) 0.030～0.050%, titanium (Ti) 0.015～0.030%, aluminium (Alt) 0.020～0.050%, boron (B) 0.0008～0.003%, surplus are iron and inevitable impurity.
Tensile strength reaches the above high strength steel plate of 800MPa, and preferred embodiment is that its component and each compositions in weight percentage are: carbon (C) 0.17%, silicon (Si) 0.23%, manganese (Mn) 0.90%, phosphorus (P) 0.012%, sulphur (S) 0.004%, chromium (Cr) 0.50%, molybdenum (Mo) 0.16%, vanadium (V) 0.05%, titanium (Ti) 0.016%, aluminium (Alt) 0.030%, boron (B) 0.0015%, surplus are iron and inevitable impurity.
Described tensile strength reaches the above high strength steel plate of 800MPa, and its thickness is not more than 40mm.
Tensile strength reaches the manufacture method of the above high strength steel plate of 800MPa, comprises following step: molten iron pretreatment desulfurizing, dephosphorization, LF+VD/RH refining, sheet billet continuous casting, slab stacking slow cooling and reheat, dephosphorize by high pressure water, slab rolling, steel plate stacking slow cooling, quenching+tempering thermal treatment; Smelting endpoint carbon content target is 0.06～0.10%, P≤0.008%, two pushing off the slag tappings; Deoxidation alloying, after tapping in CAS argon blowing time 〉=10 minute, carry out dark desulfurization at the LF refining furnace, each alloying element is finely tuned to target and added ferrotianium, carry out Fruit storage at the VD/RH stove, fidelity sky 15～20min feeds the calcium iron wire after processing finishes, add ferro-boron, soft blow argon time 〉=15min.
Tensile strength reaches the manufacture method of the above high strength steel plate of 800MPa, and its preferred version is: comprise following step: molten iron pretreatment desulfurizing, dephosphorization, LF+VD/RH refining, sheet billet continuous casting, slab stacking slow cooling and reheat, dephosphorize by high pressure water, slab rolling, steel plate stacking slow cooling, quenching+tempering thermal treatment; Smelting endpoint carbon content target is 0.06～0.10%, P≤0.008%, two pushing off the slag tappings; Deoxidation alloying, after tapping in CAS argon blowing time 〉=10 minute, carry out dark desulfurization at the LF refining furnace, each alloying element is finely tuned to target and added ferrotianium, carry out Fruit storage at the VD/RH stove, fidelity sky 15～20min feeds the calcium iron wire after processing finishes, add ferro-boron, soft blow argon time 〉=15min.The method also comprises the quenching+tempering thermal treatment after the steel plate stacking slow cooling, the heat treated concrete steps of described quenching+tempering are: 800～1000 ℃ of steel plate quenching temperature, time inside furnace 1.0～3.0min/mm, soaking time 10～20min, 500～700 ℃ of steel plate tempering temperatures, time inside furnace 1.0～3.0min/mm, tempering insulation time 10～20min, the steel plate rear air cooling of coming out of the stove.
Tensile strength reaches the manufacture method of the above high strength steel plate of 800MPa, and its preferred version is: comprise the following steps:
A. hot metal pretreatment: make wherein that sulphur takes off to 0.002-0.005%, through the dark desulfurization pre-treatment of KR and after skimming bright of molten iron greater than 90%, 1250～1350 ℃ of molten iron temperatures, arsenic in molten iron (As)≤0.006%;
B. converter smelting and deoxidation alloying, re-blow when carbon 0.20% once, and the endpoint carbon content target is 0.06-0.10%, P≤0.008%, and the tapping temperature target is 1600-1630 ℃; Adopt floating plug, the two pushing off the slag tappings of scum rod; Molybdenum-iron adds converter with steel scrap, and tapping process adds aluminium ferromanganese, lime, fluorite and makes the top slag; Add successively silicomanganese, aluminium ferromanganese, ferrochrome, vanadium iron to carry out alloying, tapping process argon blowing time 10-15 minute;
C. refining: LF adopts and makes in early days the white slag mode, adds the fine setting alloy according to composition, and heating finishes to add ferrotianium; The VD/RH vacuum-treat: vacuum tightness is not more than 1.5mbar, empty 15～20 minutes time of fidelity, feed afterwards the calcium iron wire, and add ferro-boron, after line feeding, argon blowing time is not less than 15 minutes;
D. sheet billet continuous casting: pulling speed of continuous casting 0.8-1.5m/min, full argon shield casting, process nitrogen pick-up is not more than 0.0015%;
E. slab stacking slow cooling and reheating: the continuously cast bloom stacking slow cooling more than 48 hours, is heated afterwards, and heat-up time, after heating, tapping temperature was controlled at 1120-1170 ℃ according to 8-10min/cm;
F. dephosphorize by high pressure water and slab rolling: the dephosphorization of the laggard horizontal high voltage water of continuously cast bloom heating, 1050～1090 ℃ of start rolling temperatures, hot stage add heavy reduction and improve the distortion rate of permeation, reduce last pass, the finish rolling stage is in perfect recrystallization district's termination, 900～950 ℃ of finishing temperatures;
H. steel plate rolls rear employing stacking slow cooling technique, guarantees the homogenizing with microtexture separated out of hydrogen in steel;
I. the steel plate quenching temperature is 800～1000 ℃, time inside furnace 1.0～3.0min/mm, soaking time 10～20min, 500～700 ℃ of steel plate tempering temperatures, time inside furnace 1.0～3.0min/mm, tempering insulation time 10～20min, the steel plate rear air cooling of coming out of the stove.
Tensile strength reaches the manufacture method of the above high strength steel plate of 800MPa, its preferred version is, step I in such scheme is operated by following processing condition, the quenching temperature of steel plate is 850～950 ℃, time inside furnace 1.5～2.5min/mm, soaking time 12～18min, 550～700 ℃ of steel plate tempering temperatures, time inside furnace 1.2～1.5min/mm, tempering insulation time 12～18min.
Described step I optimum operation is that the quenching temperature of steel plate is 915 ℃, time inside furnace 2min/mm, soaking time 16min, 650 ℃ of steel plate tempering temperatures, time inside furnace 1.5min/mm, tempering insulation time 14min.
The beneficial effect of this programme can be learnt according to the narration to such scheme, it is low that tensile strength reaches the above high strength steel plate cost of alloy of 800MPa, more than tensile strength reaches 800MPa,-20 ℃ of transverse impact merits are not less than 34J, relative reduction in area is not less than 45%, the side swell increment is not less than 0.38mm, and is with low cost, welding property is good.The tensile strength that provides of this scheme reaches the manufacture method of the above high strength steel plate of 800MPa simultaneously, adopts converter smelting, quenching+tempering thermal treatment, makes more than the tensile strength of steel reaches 800MPa.This shows, the present invention compared with prior art has outstanding substantive distinguishing features and marked improvement, and the beneficial effect of its enforcement is also apparent.
Description of drawings
Fig. 1 is steel plate (thickness 1/4 place, 500 times) the metallographic structure photo of the embodiment of the present invention 1.
Fig. 2 is steel plate (thickness 1/4 place, 500 times) the metallographic structure photo of the embodiment of the present invention 1.
Fig. 3 is steel plate (thickness 1/4 place, 500 times) the metallographic structure photo of the embodiment of the present invention 1.
Embodiment
For clearly demonstrating the technical characterstic of this programme, below by an embodiment, and in conjunction with its accompanying drawing, this programme is set forth.
Embodiment 1: the thickness of producing steel plate is 32mm.
Adopt the KR molten iron pretreatment desulfurizing, sulphur content 0.003% after processing, 1270 ℃ of molten iron temperatures, arsenic content 0.003%;
Converter smelting: the endpoint carbon content target is 0.08%, P:0.006%, S:0.008%.The tapping temperature target is 1620 ℃; Adopt floating plug, the two pushing off the slag tappings of scum rod; Molybdenum-iron adds converter with steel scrap, and tapping process adds aluminium ferromanganese, lime, fluorite and makes the top slag; Add successively silicomanganese, aluminium ferromanganese, ferrochrome, vanadium iron to carry out alloying, tapping process argon blowing time 13 minutes;
LF refining: 1530 ℃ of the temperature of arriving at a station, 1650 ℃ of out-station temperatures.Heat-up time 30min, treatment cycle 58min.
VD refining: the empty time 15min of fidelity, vacuum tightness 0.6mbr.Feed the calcium iron wire after VD/RH, add soft blow argon 20min after ferro-boron, soft blow process molten steel face is without exposed;
Continuous casting: pulling rate is 1.1m/min, full argon shield casting;
The chemical composition that heat analysis obtains steel plate is: C:0.17%, Si:0.22%, Mn:0.84%, P:0.015%, S:0.006%, Cr:0.44%, Mo:0.23%, V:0.049%, B:0.0023%, Ti:0.020%, Alt:0.022%;
The slab stacking slow cooling 60h that rolls off the production line.
Continuously cast bloom the heating: heat-up time 240min, 1154 ℃ of tapping temperatures.
Start rolling temperature: 1048 ℃, finishing temperature: 932 ℃;
Steel plate quenching+tempering process: 910 ℃ of quenching temperatures, at stove 64min heat-up time, water-cooled after soaking time 16 min; 650 ℃ of tempering temperatures, at stove 64min heat-up time, soaking time 16 min, the steel plate rear air cooling of coming out of the stove.
Embodiment 2: the related steel plate thickness of the present embodiment is 20mm;
Smelting molten steel and continuously cast bloom production technique are with embodiment 1, and continuously cast bloom reheats: 235 minutes heat-up times, 1160 ℃ of tapping temperatures.Start rolling temperature: 1064 ℃.Finishing temperature: 930 ℃.910 ℃ of steel plate quenching temperature, time inside furnace 40min, soaking time is water-cooled after 15 minutes; 650 ℃ of tempering temperatures, time inside furnace 40min, soaking time 16 min, the steel plate rear air cooling of coming out of the stove.
Component by aforesaid method gained steel plate is with embodiment 1.
Embodiment 3: the related steel plate thickness of the present embodiment is 16mm;
Smelting molten steel and continuously cast bloom production technique are with embodiment 1, and continuously cast bloom reheats: 256 minutes heat-up times, 1145 ℃ of tapping temperatures.Start rolling temperature: 1055 ℃.Finishing temperature: 925 ℃.910 ℃ of steel plate quenching temperature, time inside furnace 35min, soaking time is water-cooled after 15 minutes; 650 ℃ of tempering temperatures, time inside furnace 35min, soaking time 15 min, the steel plate rear air cooling of coming out of the stove.
Component by aforesaid method gained steel plate is with embodiment 1.
Normal tensile property is as shown in table 1.
Low temperature impact test: carry out low temperature impact test at-20 ℃, shock test adopts v-notch, and Impulse Test Result is as shown in table 2.
According to the GB/T10561-2005 standard, analyzed the inclusion rank of steel plate, result is as shown in table 3.
The present invention can pass through existing techniques in realizing without the technical characterictic of describing, and does not repeat them here.Certainly; above-mentioned explanation is not to be limitation of the present invention; the present invention also is not limited in above-mentioned giving an example, and the variation that those skilled in the art make in essential scope of the present invention, remodeling, interpolation or replacement also should belong to protection scope of the present invention.
Claims (9)
1. a tensile strength reaches the above high strength steel plate of 800MPa, it is characterized in that: its component and each compositions in weight percentage are: carbon (C) 0.08～0.21%, silicon (Si) 0.15～0.45%, manganese (Mn) 0.70～1.10%, phosphorus (P)≤0.015%, sulphur (S)≤0.010%, chromium (Cr) 0.40～0.65%, molybdenum (Mo) 0.10～0.25%, vanadium (V) 0.030～0.080%, titanium (Ti) 0.010～0.030%, aluminium (Alt) 0.020～0.050%, boron (B) 0.0005～0.005%, surplus is iron and inevitable impurity.
2. tensile strength according to claim 1 reaches the above high strength steel plate of 800MPa, it is characterized in that: its component and each compositions in weight percentage are: carbon (C) 0.015～0.20%, silicon (Si) 0.15～0.35%, manganese (Mn) 0.80～1.00%, phosphorus (P)≤0.015%, sulphur (S)≤0.010%, chromium (Cr) 0.40～0.60%, molybdenum (Mo) 0.10～0.20%, vanadium (V) 0.030～0.050%, titanium (Ti) 0.015～0.030%, aluminium (Alt) 0.020～0.050%, boron (B) 0.0008～0.003%, surplus is iron and inevitable impurity.
3. tensile strength according to claim 1 and 2 reaches the above high strength steel plate of 800MPa, it is characterized in that: its component and each compositions in weight percentage are: carbon (C) 0.17%, silicon (Si) 0.23%, manganese (Mn) 0.90%, phosphorus (P) 0.012%, sulphur (S) 0.004%, chromium (Cr) 0.50%, molybdenum (Mo) 0.16%, vanadium (V) 0.05%, titanium (Ti) 0.016%, aluminium (Alt) 0.030%, boron (B) 0.0015%, surplus is iron and inevitable impurity.
4. according to claim 1 to 3, the described tensile strength of any one reaches high strength steel plate more than 800MPa, and it is characterized in that: the thickness of this steel plate is not more than 40mm.
5. a tensile strength claimed in claim 1 reaches the manufacture method of the above high strength steel plate of 800MPa, comprises following step: molten iron pretreatment desulfurizing, dephosphorization, LF+VD/RH refining, sheet billet continuous casting, slab stacking slow cooling and reheat, dephosphorize by high pressure water, slab rolling, steel plate stacking slow cooling, quenching+tempering thermal treatment; It is characterized in that: smelting endpoint carbon content target is 0.06～0.10%, P≤0.008%, two pushing off the slag tappings; Deoxidation alloying, after tapping in CAS argon blowing time 〉=10 minute, carry out dark desulfurization at the LF refining furnace, each alloying element is finely tuned to target and added ferrotianium, carry out Fruit storage at the VD/RH stove, fidelity sky 15～20min feeds the calcium iron wire after processing finishes, add ferro-boron, soft blow argon time 〉=15min.
6. tensile strength according to claim 4 reaches the manufacture method of the above high strength steel plate of 800MPa, it is characterized in that: the method also comprises the quenching+tempering thermal treatment after the steel plate stacking slow cooling, the heat treated concrete steps of described quenching+tempering are: 800～1000 ℃ of steel plate quenching temperature, time inside furnace 1.0～3.0min/mm, soaking time 10～20min, 500～700 ℃ of steel plate tempering temperatures, time inside furnace 1.0～3.0min/mm, tempering insulation time 10～20min, the steel plate rear air cooling of coming out of the stove.
7. described tensile strength according to claim 4 reaches the manufacture method of the above high strength steel plate of 800MPa, it is characterized in that: comprise the following steps:
A. hot metal pretreatment: make wherein that sulphur takes off to 0.002-0.005%, through the dark desulfurization pre-treatment of KR and after skimming bright of molten iron greater than 90%, 1250～1350 ℃ of molten iron temperatures, arsenic in molten iron (As)≤0.006%;
B. converter smelting and deoxidation alloying, the endpoint carbon content target is 0.06-0.10%, P≤0.008%, the tapping temperature target is 1600-1630 ℃; Adopt floating plug, the two pushing off the slag tappings of scum rod; Molybdenum-iron adds converter with steel scrap, and tapping process adds aluminium ferromanganese, lime, fluorite and makes the top slag; Add successively silicomanganese, aluminium ferromanganese, ferrochrome, vanadium iron to carry out alloying, tapping process argon blowing time 10-15 minute;
C. refining: LF adopts and makes in early days the white slag mode, adds the fine setting alloy according to composition, and heating finishes to add ferrotianium; The VD/RH vacuum-treat: vacuum tightness is not more than 1.5mbar, empty 15～20 minutes time of fidelity, feed afterwards the calcium iron wire, and add ferro-boron, after line feeding, argon blowing time is not less than 15 minutes;
D. sheet billet continuous casting: pulling speed of continuous casting 0.8-1.5m/min, full argon shield casting, process nitrogen pick-up is not more than 0.0015%;
E. slab stacking slow cooling and reheating: the continuously cast bloom stacking slow cooling more than 48 hours, is heated afterwards, and heat-up time, after heating, tapping temperature was controlled at 1120-1170 ℃ according to 8-10min/cm;
F. dephosphorize by high pressure water and slab rolling: the dephosphorization of the laggard horizontal high voltage water of continuously cast bloom heating, 1050～1090 ℃ of start rolling temperatures, hot stage add heavy reduction and improve the distortion rate of permeation, reduce last pass, the finish rolling stage is in perfect recrystallization district's termination, 900～950 ℃ of finishing temperatures;
H. steel plate rolls rear employing stacking slow cooling technique, guarantees the homogenizing with microtexture separated out of hydrogen in steel;
I. the steel plate quenching temperature is 800～1000 ℃, time inside furnace 1.0～3.0min/mm, soaking time 10～20min, 500～700 ℃ of steel plate tempering temperatures, time inside furnace 1.0～3.0min/mm, tempering insulation time 10～20min, the steel plate rear air cooling of coming out of the stove.
8. tensile strength according to claim 6 reaches the manufacture method of the above high strength steel plate of 800MPa, it is characterized in that: described step I operates by following processing condition, the quenching temperature of steel plate is 850～950 ℃, time inside furnace 1.5～2.5min/mm, soaking time 12～18min, 550～700 ℃ of steel plate tempering temperatures, time inside furnace 1.2～1.5min/mm, tempering insulation time 12～18min.
9. tensile strength according to claim 6 reaches the manufacture method of the above high strength steel plate of 800MPa, it is characterized in that: described step I operates by following processing condition, the quenching temperature of steel plate is 915 ℃, time inside furnace 2min/mm, soaking time 16min, 650 ℃ of steel plate tempering temperatures, time inside furnace 1.5min/mm, tempering insulation time 15min.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005126733A (en) * | 2003-10-21 | 2005-05-19 | Nippon Steel Corp | Steel sheet for hot press having excellent hot workability, and automotive member |
| CN102776441A (en) * | 2012-08-10 | 2012-11-14 | 济钢集团有限公司 | Steel plate for third-generation nuclear power station reactor containments and manufacturing method thereof |
-
2013
- 2013-03-15 CN CN201310083287.4A patent/CN103131956B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005126733A (en) * | 2003-10-21 | 2005-05-19 | Nippon Steel Corp | Steel sheet for hot press having excellent hot workability, and automotive member |
| CN102776441A (en) * | 2012-08-10 | 2012-11-14 | 济钢集团有限公司 | Steel plate for third-generation nuclear power station reactor containments and manufacturing method thereof |
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