CN102181795A - Superhigh-strength armour plate and manufacturing process thereof - Google Patents
Superhigh-strength armour plate and manufacturing process thereof Download PDFInfo
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- CN102181795A CN102181795A CN 201110126077 CN201110126077A CN102181795A CN 102181795 A CN102181795 A CN 102181795A CN 201110126077 CN201110126077 CN 201110126077 CN 201110126077 A CN201110126077 A CN 201110126077A CN 102181795 A CN102181795 A CN 102181795A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 238000005096 rolling process Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000007669 thermal treatment Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims abstract description 5
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 3
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 3
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 3
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 3
- 229910052719 titanium Inorganic materials 0.000 claims abstract 2
- 229910000831 Steel Inorganic materials 0.000 claims description 38
- 239000010959 steel Substances 0.000 claims description 38
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 claims description 8
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- 239000004615 ingredient Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 235000009508 confectionery Nutrition 0.000 claims description 2
- 238000006477 desulfuration reaction Methods 0.000 claims description 2
- 230000023556 desulfurization Effects 0.000 claims description 2
- 238000009499 grossing Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000003345 natural gas Substances 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 238000010791 quenching Methods 0.000 claims description 2
- 230000000171 quenching effect Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 1
- 239000000956 alloy Substances 0.000 abstract description 4
- 229910045601 alloy Inorganic materials 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 2
- 229910052796 boron Inorganic materials 0.000 abstract 1
- 229910052750 molybdenum Inorganic materials 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 101000848647 Homo sapiens Telomerase RNA component interacting RNase Proteins 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 102100034592 Telomerase RNA component interacting RNase Human genes 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
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Abstract
The invention discloses a superhigh-strength armour plate and a manufacturing process thereof. The superhigh-strength armour plate comprises the following chemical components in percentage by weight: 0.30- 0.5% of C, 0.40-0.60% of Si, 1.50-1.80% of Mn, not more than 0.025% of P, not more than 0.01% of S, not more than 2.5% of the sum of Cr, Ni and Mo, not more than 0.20% of the sum of Nb, V, Ti and B and the balance of Fe. Based on a low alloy component design, the manufacturing process of the superhigh-strength armour plate comprises the following steps of: heating at 1180-1250 DEG C, performing primary rolling at 100-1150 DEG C, performing final rolling at 850-900 DEG C and performing thermal treatment at 900-950 DEG C; in addition, a water-cooling hot impact forming process is also adopted in the manufacturing process, wherein water flows into a die at the pressure of 7-8bar, exit pressure is 5.5-7bar, water velocity is 1.5-3m/s. By using the manufacturing process, a 2.2mm-thickness B-grade superhigh-strength light armour plate and a 3.7mm-thickness C-grade superhigh-strength light armour plate which meet all performance requirements and have good plate flatness and no oxide skin on the surface can be manufactured.
Description
Technical field
The present invention relates to a kind of superstrength lightweight steel plate and manufacturing forming process thereof, be specifically related to a kind of thermoforming manufacturing process of explosion-proof for motor vehicle shellproof bullet steel plate.
Background technology
In the face of current all kinds of contradictions of appearing suddenly and complicated public security situation, each state is all strengthening the anti-quick-fried social security work of anti-terrorism, and the anti-demand of fearing explosion-proof vehicle is being increased day by day.Prevent that fearing explosion-proof vehicle requirement had both had high ballistic performance, needed to possess good maneuvering ability and energy-saving and emission-reduction performance again.Attenuate armour plate thickness makes the bullet-proof vehicle lightweight be the raising vehicle mobility, reach one of effective way of energy-saving and emission-reduction purpose.But armour plate is realized lightweight simultaneously at thickness thinning, also must improve intensity, as high intensity, toughness and ductility, and welding property, require and make requirement to satisfy high ballistic performance.
At present, external existing high strength armour plate mainly contains the Pro500 armour series of Sweden SSAB company, its typical mechanical property is yield strength YS 〉=1250MPa, tensile strength UTS 〉=1500MPa, unit elongation 〉=8%, impelling strength 〉=20J in the time of-40 ℃, HB (480-450), the thickness of its B level bullet proof steel version is 2.5mm, anti-56 formula tommy guns, 7.62mm the steel core bullet, corresponding bullet speed 500m/s; The thickness of its C level armour plate is 4.2mm, anti-AK47 rifle, 7.62mm steel core bullet, corresponding bullet speed 700-720m/s.The bullet proof steel that also has European Arcelor to produce, the Pro500 of its Mass240 armour and SSAB company roughly the same, Ni, the Cr of 300 armours of Mass, Mo content is much larger than SSAB company, yield strength YS 〉=1300MPa, tensile strength UTS 〉=2000MPa, the thickness 3.7mm of C level Crashworthy plate.The hot rolling armour that domestic existing high strength armour plate main Shanghai Baosteel and Chongqing Car Research Institute develop jointly, the typical mechanical property of its B level armour plate is yield strength YS 〉=750MPa, tensile strength UTS 〉=900MPa, unit elongation 〉=12%, have the TRIR effect, the B level armour plate that 2.85mm is thick can replace 3.0 armour plates of the Domex300 of SSAB company.In addition, domestic existing high strength armour plate also has the F60X series armour of Iron and Steel Research Geueral Inst exploitation, this class armour is that the higher medium carbon structure steel of alloying element content forms through thermal treatment, its trade mark is that the tensile strength of 601 B level armour is (1650-1750) MPa, anti-79 thicknesss of slab of charging that decline are 2.3mm, and anti-56 formula tommy guns are 4.0mm; The Pro500 of the trade mark 602 and Sweden roughly the same, anti-79 thicknesss of slab of charging that decline are 2.5mm, and anti-56 formula tommy guns are 4.3mm, the MPa of 607 its tensile strength of series UTS 〉=(1950-2200), anti-79 thicknesss of slab of charging that decline are 2.1-2.2mm, and anti-56 formula tommy guns are 3.6-3.7mm.
Though above-mentioned these representative typical products all differ from one another, the alloy content height can't satisfy the requirement of armour plate lightweight and high ballistic performance and high performance-price ratio simultaneously.Therefore, need the lightweight steel plate of a kind of novel superstrength of development, make its not only reduced thickness, but also have high intensity, toughness, ductile rational Match and certain welding property, simultaneously good plate cut.
Summary of the invention
The object of the present invention is to provide a kind of superstrength armour plate and forming technology thereof that can satisfy lightweight and high ballistic performance requirement simultaneously; it is good to guarantee to obtain plate shape; alloy content is low; thickness is at the B level armour plate of 2.2mm, yield strength 〉=1350MPa, tensile strength 〉=1700MPa, unit elongation 〉=6%; with the C level armour plate of thickness at 3.7mm, yield strength 〉=1500MPa, tensile strength 〉=2000MPa, unit elongation 〉=5%.
In order to achieve the above object, the present invention adopts such technical scheme to realize, a kind of superstrength armour plate, its chemical ingredients is by weight percentage: C 0.30～0.5, Si 0.40～0.60, Mn 1.50～1.80, P≤0.025, S≤0.01, optional Cr, Ni, at least two kinds of elements among the Mo, their content satisfies Cr+Ni+Mo≤2.5, wherein Nb, V, three kinds of elements of Ti are chosen the 1-2 kind wantonly, B must contain element, their content satisfies Nb+V+Ti+B≤0.20, and all the other are Fe.
A kind of superstrength armour plate manufacturing process is: step 1 is forged and rolling technology, make steel billet with conventional metallurgical technology,, carry out open rolling at 1000～1150 ℃ 1180～1250 ℃ of heating, 850～900 ℃ of finishing temperatures, batching then after rolling, air cooling to room temperature forms blank;
The step 2 Sheet Metal Forming Technology, with the hot rolled plate uncoiling, smoothing cuts into the thermal treatment slab of 1x2m; The rail mounted process furnace of protective atmosphere of dissociated methanol of the thermal treatment slab of 1x2m being put into the Sweet natural gas through desulfurization, processed, the 5%-10% of the H2, the 80%-90% that contain 5%-10% heats, 900～950 ℃ of austenitizing temperatures of Heating temperature are 1～1.5 minute/mm by the slab thickness gauge heat tracing time; Move in the flat plate mold of the band cooling channel that is installed on the press 20～30 ℃ of mold surface temperatures in 3～5 seconds after coming out of the stove; Start rapidly the fast hydraulic pressure machine under 200～300 tons pressure with sheet material press quenching, hydraulic efficiency installation pressurize 20～30 seconds after reaching pressure; And then water flowing cooling in mould, wherein to being used to make the mould of 2.2mm B grade steel plate, the pressure that water flows in this mould is 5～6 crust, top hole pressure is 3～4 crust, the speed of current is 1.5～2m/s, workpiece surface temperature goes out the mould air cooling 100～120 ℃ of time shifts, to being used to make the mould of 3.7mmC grade steel plate, the pressure that water flows in this mould is 7～8 crust, top hole pressure is 5.5～7 crust, the speed of current is 1.5～3m/s, and workpiece surface temperature goes out the mould air cooling 100～150 ℃ of time shifts.
Processing condition of the present invention explanation: the speed of current is 1.5～3m/s, to guarantee in the mould slab speed of cooling 〉=40 ℃/second.
After adopting above-mentioned art breading,, handle back workpiece hardness 480～520HB,, handle back workpiece hardness 580～630HB the steel grade of carbon content carbon content 〉=0.45 to the steel grade of carbon content≤0.35.
Through above-mentioned art breading, can access thickness is 2.2mm B grade steel plate, its yield strength 〉=1350MPa, tensile strength 〉=1700MPa, unit elongation 〉=6%, spoon curvature≤3mm that steel plate is every meter;
Can access thickness is the C grade steel plate of 3.7mm, its yield strength 〉=1500MPa, tensile strength 〉=2000MPa, unit elongation 〉=5%, spoon curvature≤3mm that steel plate is every meter.
Superstrength armour plate of the present invention has adopted design of low-alloy composition and water flowing refrigerative hot stamping moulding process, obtained to satisfy every performance requriements, and good, the surperficial non-scale of template planeness, thickness are at the C of the B of 2.2mm grade steel plate and 3.7mm level lightweight steel plate.
Embodiment
Embodiment
Table 1 is the chemical ingredients of the strong armour plate of superelevation of the present invention;
The chemical ingredients of the high-strength armour plate of table 1B
Steel of the present invention are through smelting, forging, rolling, table 2 is mechanical property and spoon curvatures of the steel plate of control of 2.2mm B level armour plate manufacturing process and gained, and table 3 is mechanical property and planeness of the steel plate of control of 3.7mm C level armour plate manufacturing process and gained.Wherein Mechanics Performance Testing GB6397-86 tests; The test of spoon curvature is tested by company standard B/NEQB201-2010.
Data as can be seen from table 1 and table 2, designed according to this invention composition and manufacturing process control 2.2mm B level armour plate, steel grade to carbon content≤0.35, after above-mentioned art breading, workpiece hardness is 480～520HB. yield strength 〉=1350MPa, tensile strength 〉=1700MPa, unit elongation 〉=6%, spoon curvature≤3mm that steel plate is every meter satisfies the performance requriements of the strong lightweight armour plate of 2.2mm B level superelevation.
From table 1 and table 3 data as can be seen, designed according to this invention composition and manufacturing process control 3.7mm C level armour plate, to the steel grade of carbon content 〉=0.45, after above-mentioned art breading, workpiece hardness is 580～630HB; Yield strength 〉=1500MPa, tensile strength 〉=2000MPa, unit elongation 〉=5%.Spoon curvature≤3mm that steel plate is every meter satisfies the performance requriements of the strong lightweight armour plate of 3.7mm C level superelevation.
The mechanical property and the spoon curvature of the steel plate of armour plate manufacturing process control of table 22.2mm B level and gained
33.7mm the mechanical property of the steel plate of control of C level armour plate manufacturing process and gained and spoon curvature
Claims (4)
1. superstrength armour plate, its chemical ingredients is by weight percentage: C 0.30～0.5, Si 0.40～0.60, Mn 1.50～1.80, P≤0.025, S≤0.01, optional Cr, Ni, at least two kinds of elements among the Mo, their content satisfies Cr+Ni+Mo≤2.5, wherein Nb, V, Ti, three kinds of optional 1-2 kinds of elements, B must contain element, their content satisfies Nb+V+Ti+B≤0.20, and all the other are Fe.
2. superstrength armour plate manufacturing process is characterized in that: step 1 is forged and rolling technology, makes steel billet with conventional metallurgical technology, 1180～1250 ℃ of heating, 1000～1150 ℃ are carried out open rolling, 850～900 ℃ of finishing temperatures, and batching then after rolling, air cooling to room temperature forms blank;
The step 2 Sheet Metal Forming Technology, with the hot rolled plate uncoiling, smoothing cuts into the thermal treatment slab of 1x2m; The rail mounted process furnace of protective atmosphere of dissociated methanol of the thermal treatment slab of 1x2m being put into the Sweet natural gas through desulfurization, processed, the 5%-10% of the H2, the 80%-90% that contain 5%-10% heats, Heating temperature is 900～950 ℃ of austenitizing temperatures, and the heat tracing time is 1～1.5 minute/mm by the slab thickness gauge; Move in the flat plate mold of the band cooling channel that is installed on the press 20～30 ℃ of mold surface temperatures in 3～5 seconds after coming out of the stove; The primer fluid press under 200～300 tons pressure with sheet material press quenching, hydraulic efficiency installation pressurize 20～30 seconds after reaching pressure; And then water flowing cooling in mould, wherein to being used to make the mould of 2.2mm B grade steel plate, the pressure that water flows in this mould is 5～6 crust, and top hole pressure is 3～4 crust, the speed of current is 1.5～2m/s, and workpiece surface temperature goes out the mould air cooling 100～120 ℃ of time shifts; To being used to make the mould of 3.7mm C grade steel plate, the pressure that water flows in this mould is 7～8 crust, and top hole pressure is 5.5～7 crust, and the speed of current is 1.5～3m/s, and workpiece surface temperature goes out the mould air cooling 100～150 ℃ of time shifts.
3. a kind of superstrength armour plate as claimed in claim 1 is characterized in that: to the steel grade of carbon content≤0.35, handle back workpiece hardness 480～520HB, to the steel grade of carbon content carbon content 〉=0.45, handle back workpiece hardness 580～630HB.
4. a kind of superstrength armour plate manufacturing process as claimed in claim 2 is characterized in that: 2.2mm B grade steel plate, its yield strength 〉=1350MPa, tensile strength 〉=1700 MPa, unit elongation 〉=6%; Thickness is the C grade steel plate of 3.7mm, its yield strength 〉=1500MPa, tensile strength 〉=2000 MPa, unit elongation 〉=5%; 2.2mm spoon curvature≤3mm that the C grade steel plate of B grade steel plate and 3.7mm is every meter.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776337A (en) * | 2012-08-21 | 2012-11-14 | 重庆大江工业有限责任公司 | Press quenching and processing method for 30 MnCrNiMo armored steel plate part |
| CN104762460A (en) * | 2015-03-12 | 2015-07-08 | 燕山大学 | Rolling and deep-processing short-process integrated manufacturing method of high-strength steel automobile sheet |
| CN106607470A (en) * | 2015-10-25 | 2017-05-03 | 巨贾实业（上海）有限公司 | Manufacturing technology of high elongation steel plate |
| CN107083475A (en) * | 2017-04-10 | 2017-08-22 | 钢铁研究总院淮安有限公司 | A kind of production method of hot press-formed shellproof part |
| DE112017002175T5 (en) | 2016-04-26 | 2019-01-10 | Baoshan Iron & Steel Co., Ltd. | Protective steel sheet with high performance cold bending properties and its manufacturing process |
| DE112017002177T5 (en) | 2016-04-26 | 2019-03-14 | Baoshan Iron & Steel Co., Ltd. | Protective composite steel sheet and process for its production |
| CN109570312A (en) * | 2018-11-29 | 2019-04-05 | 合肥常青机械股份有限公司 | A kind of super-high strength steel auto parts thermoforming process |
| CN110551876A (en) * | 2018-05-30 | 2019-12-10 | 本特勒尔汽车技术有限公司 | Motor vehicle component, method for producing same and production device |
| CN113249653A (en) * | 2021-05-11 | 2021-08-13 | 北京理工大学 | Bullet steel for natural fragment warhead and preparation method thereof |
| US11377703B2 (en) * | 2016-07-08 | 2022-07-05 | Northeastern University | Steel material for hot stamping, hot stamping process and hot stamped component |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776337A (en) * | 2012-08-21 | 2012-11-14 | 重庆大江工业有限责任公司 | Press quenching and processing method for 30 MnCrNiMo armored steel plate part |
| CN104762460A (en) * | 2015-03-12 | 2015-07-08 | 燕山大学 | Rolling and deep-processing short-process integrated manufacturing method of high-strength steel automobile sheet |
| CN106607470A (en) * | 2015-10-25 | 2017-05-03 | 巨贾实业（上海）有限公司 | Manufacturing technology of high elongation steel plate |
| DE112017002175T5 (en) | 2016-04-26 | 2019-01-10 | Baoshan Iron & Steel Co., Ltd. | Protective steel sheet with high performance cold bending properties and its manufacturing process |
| DE112017002177T5 (en) | 2016-04-26 | 2019-03-14 | Baoshan Iron & Steel Co., Ltd. | Protective composite steel sheet and process for its production |
| US11377703B2 (en) * | 2016-07-08 | 2022-07-05 | Northeastern University | Steel material for hot stamping, hot stamping process and hot stamped component |
| CN107083475A (en) * | 2017-04-10 | 2017-08-22 | 钢铁研究总院淮安有限公司 | A kind of production method of hot press-formed shellproof part |
| CN110551876A (en) * | 2018-05-30 | 2019-12-10 | 本特勒尔汽车技术有限公司 | Motor vehicle component, method for producing same and production device |
| CN109570312A (en) * | 2018-11-29 | 2019-04-05 | 合肥常青机械股份有限公司 | A kind of super-high strength steel auto parts thermoforming process |
| CN113249653A (en) * | 2021-05-11 | 2021-08-13 | 北京理工大学 | Bullet steel for natural fragment warhead and preparation method thereof |
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| CN102181795B (en) | 2013-01-09 |
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