CN108441768A - A kind of high-strength penertration resistance steel of protective door and its heat treatment method - Google Patents
A kind of high-strength penertration resistance steel of protective door and its heat treatment method Download PDFInfo
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- CN108441768A CN108441768A CN201810347369.8A CN201810347369A CN108441768A CN 108441768 A CN108441768 A CN 108441768A CN 201810347369 A CN201810347369 A CN 201810347369A CN 108441768 A CN108441768 A CN 108441768A
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- 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
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- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
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- 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
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- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- 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
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
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- 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
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
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- 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
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- 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
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
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- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
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Abstract
The invention discloses a kind of high-strength penertration resistance steel of protective door and its heat treatment methods, carbon and low-alloy composition design during the high-strength penertration resistance steel of protective door uses, quenching+low-temperature tempering heat treatment technique, steel plate thickness are 20 ~ 80mm, yield strength >=1200MPa, tensile strength >=1600MPa, elongation after fracture >=8%, 477 ~ 555HBW of Brinell hardness, 40 DEG C of low-temperature flexibility >=15J, with excellent anti-penetration properties, which is applied to the fields such as hangar protective door, disclosure satisfy that the requirement of shell protection.
Description
Technical field
The present invention relates to a kind of steel, and in particular to a kind of high-strength penertration resistance steel of protective door and its manufacturing method.
Background technology
The high-strength penertration resistance steel plate of protective door is mainly used in large-scale, the super-huge door of various storage and transportation warehouse designs, for setting
The aerospace fields such as standby repair library, the aircraft maintenance of military airfield and storage library, rocket assembling storage library.As in the 5th generation, fought
The development of the advanced weaponries such as bucket machine, novel surface-to-air ballistic missile and New Type Radar equipment, hangar is in addition to it can park opportunity of combat, it may also be used at
Organizational system personnel and vehicle it is hidden, launch an attack suddenly conducive to wartime, hangar safety significantly improved.Protective door is as space flight, boat
The important component of the buildings such as sky, shipbuilding, building surface in big industrial factory and workshop field, status and effect are particularly significant,
Dosage will obviously increase, and the high-strength penertration resistance steel of protective door has excellent technical prospect and great social benefit.
The high-strength penertration resistance steel plate of protective door is a kind of steel grade of specific use, it is both a kind of structural material, even more a kind of
Protective materials, most important effect are resistant to invading for bullet, explosion, jet stream and fragmentation of various different shapes and bore etc.
It is thorough, need to have good plasticity, toughness and crack arrest characteristic, ensure steel plate under bullet impact not avalanche and steel plate in multiple bullet
Entire crack is not generated under impact, and efficiently reduces the impact force behind armour plate suffered by support.The high-strength penertration resistance of protective door
Steel plate needs certain thickness, has superhigh intensity and hardness, while having excellent plasticity, toughness and crack arrest characteristic.
Existing armor facing steel plate, with ultrahigh hardness 42CrNiMoV steel, hardness range be 514~578HBW,
30CrNiMoNb steel, hardness range are 444~514HBW;But steel plate thickness≤20mm.With big thickness
30CrMnMoRE steel, 30~100mm of thickness range, 30CrNi2MnMoRE steel, 30~100mm of thickness range;But steel plate hardness
≤ 341HBW.The high-strength anti-penetration properties of protective door that existing armor facing steel is unsatisfactory for the facilities such as hangar.
Invention content
The present invention cannot be satisfied the high-strength anti-penetration properties of the facilities protective door such as hangar for existing armor facing steel
Technical problem researches and develops a kind of protection with excellent anti-penetration properties by rational Design of Chemical Composition and heat treatment process
The high-strength penertration resistance steel of door.
In order to solve the above technical problems, present invention firstly provides a kind of high-strength penertration resistance steel of protective door, it is characterised in that press
Weight percent meter contains:C:0.24~0.34%, Si:0.20~1.00%, Mn:0.20~1.00%, P:≤ 0.015%,
S:≤ 0.0020%, Alt:0.015~0.050%, Cr:0.10~0.50%, Ni:0.20~1.00%, Mo:0.10~
0.50%, Nb≤0.050%, V≤0.050%, Ti≤0.050%, B:0.0005~0.0035%, Ceq:≤ 0.65%,
Remaining is Fe and inevitable impurity;Wherein the sum of Si, Mn, Cr, Ni, Mo content is less than 3.00%, and the sum of Nb, V, Ti content is small
In 0.12%.
Carbon and low-alloy composition design during the high-strength penertration resistance steel of protective door of the present invention uses.Steel plate hardness largely depends on
In C content, the intensity and hardness of steel are improved, first has to improve C content;Si, which can be dissolved in ferrite and austenite, improves steel
Hardness and strength;Mn can be infinitely dissolved with Fe, and while improving steel strength, the influence to plasticity is relatively small;Cr can increase
Add the quenching degree of steel and play the role of post-curing, the hardness of steel can be improved without making steel become fragile;Ni can significantly improve steel
Low-temperature flexibility makes the ductile-brittle transition temperature of steel reduce;Mo can improve quenching degree and heat resistance, prevent temper brittleness;Micro Nb, V,
Ti crystal grain thinnings not only can be improved intensity, but also toughness made to improve, and be most effective one of the method for improving Steel Properties;B can be carried significantly
The quenching degree of Gao Gang reduces the addition for the alloying element that other increase quenching degree, reduces cost.
The present invention also provides the manufacturing methods of the high-strength penertration resistance steel of above-mentioned protective door, it is characterised in that use quenching+low
Warm tempering heat treatment process.Hardening heat is 850~920 DEG C, obtains uniformly tiny austenite grain, structure of steel is complete after quenching
Portion is lath martensite, and the lath martensite tissue of formation makes steel plate have the tensile strength and hardness of superelevation;Temperature is
170~250 DEG C, steel plate residual stress is eliminated, while ensureing that steel plate has good impact flexibility.Wherein, Quench heating be
It carries out in normalizing furnace, is completed in Cooling Process;Tempering heating is carried out in tempering furnace, is completed in process air cooler.
The method of the present invention uses quenching+lonneal technique, in addition reasonably optimizing each component, improves the quenching degree of steel,
Crystal grain has been refined, the tensile strength and hardness of steel plate are improved, ensure that the good impact flexibility of steel plate.It is provided by the invention anti-
Protect the high-strength penertration resistance steel of door, steel plate thickness be 20~80mm, yield strength >=1200MPa, tensile strength >=1600MPa, break
Elongation >=8% afterwards, Brinell hardness 477~555HBW, -40 DEG C of low-temperature flexibility >=15J.
Penertration resistance experiment is carried out using steel plate of the present invention, using 40mm steel plate+510mmC50 concrete layer+10mmQ235 steel
Plate compound target body progress target, which is had a try, to be tested;By 500 pounds of semi-armor piercers, expeimental cartridge uses Sha Dan warheads form, missile velocity 300
± 15m/s, angle-of-attack are that can meet anti-penetration properties, qualification damage acceptance criteria is shown at 50 ± 3 ° of angles with target
Shown in table 1.There are steel plate excellent anti-penetration properties, the steel plate to be applied to the fields such as hangar protective door, disclosure satisfy that shell is anti-
The requirement of shield.
1 target plate qualification of table damages acceptance criteria
Specific implementation mode
Embodiment 1
A kind of high-strength penertration resistance steel of protective door, contains by weight percentage:C:0.26~0.34%, Si:0.20~
0.80%, Mn:0.20~0.80%, P:≤ 0.015%, S:≤ 0.0020%, Alt:0.015~0.050%, Cr:0.20~
0.50%, Ni:0.40~1.00%, Mo:0.20~0.50%, Nb≤0.050%, V≤0.050%, Ti≤0.050%, B:
0.0005~0.0025%, Ceq:≤ 0.65%, remaining is Fe and inevitable impurity;Wherein Si, Mn, Cr, Ni, Mo content
The sum of be less than 3.00%, the sum of Nb, V, Ti content be less than 0.12%.
The high-strength penertration resistance Heat-Treatment of Steel technique of protective door is 850~900 DEG C of quenchings, 170~230 DEG C of tempering;Wherein quench
Fire heating is carried out in normalizing furnace, is completed in Cooling Process;Tempering heating is carried out in tempering furnace, complete in process air cooler
At.
The high-strength penertration resistance steel of protective door manufactured by the present embodiment, steel plate thickness be 40~80mm, yield strength >=
1200MPa, tensile strength >=1600MPa, elongation after fracture >=8%, 495~555HBW of Brinell hardness, -40 DEG C of low-temperature flexibilities >=
15J。
Using the present embodiment production steel plate carry out penertration resistance experiment, using 40mm steel plate+510mmC50 concrete layers+
10mmQ235 steel plate compound target bodies progress target, which is had a try, to be tested;By 500 pounds of semi-armor piercers, expeimental cartridge uses Sha Dan warheads form,
300 ± 15m/s of missile velocity, angle-of-attack is, at 50 ± 3 ° of angles, target plate damage results are shown in Table 2, steel plate with target
With excellent anti-penetration properties, which is applied to the fields such as hangar protective door, disclosure satisfy that the requirement of shell protection.
2 target plate damage results of table
Front | The back side | Strain requires |
Maximum pit depth 13.4mm, flawless | Maximum height of projection 15.4mm, flawless | < 5% |
Embodiment 2
A kind of high-strength penertration resistance steel of protective door, contains by weight percentage:C:0.24~0.32%, Si:0.40~
1.00%, Mn:0.40~1.00%, P:≤ 0.015%, S:≤ 0.0020%, Alt:0.015~0.050%, Cr:0.10~
0.40%, Ni:0.20~0.80%, Mo:0.10~0.40%, Nb≤0.050%, V≤0.050%, Ti≤0.050%, B:
0.0015~0.0035%, Ceq:≤ 0.65%, remaining is Fe and inevitable impurity;Wherein Si, Mn, Cr, Ni, Mo content
The sum of be less than 3.00%, the sum of Nb, V, Ti content be less than 0.12%.
Its heat treatment process is 870~920 DEG C of quenchings, 190~250 DEG C of tempering;Wherein Quench heating is in normalizing furnace
It carries out, is completed in Cooling Process;Tempering heating is carried out in tempering furnace, is completed in process air cooler.
The high-strength penertration resistance steel of protective door manufactured by the present embodiment, steel plate thickness be 20~80mm, yield strength >=
1200MPa, tensile strength >=1600MPa, elongation after fracture >=8%, 477~535HBW of Brinell hardness, -40 DEG C of low-temperature flexibilities >=
15J。
Using the present embodiment production steel plate carry out penertration resistance experiment, using 40mm steel plate+510mmC50 concrete layers+
10mmQ235 steel plate compound target bodies progress target, which is had a try, to be tested;By 500 pounds of semi-armor piercers, expeimental cartridge uses Sha Dan warheads form,
300 ± 15m/s of missile velocity, angle-of-attack is, at 50 ± 3 ° of angles, target plate damage results are shown in Table 3, steel plate with target
With excellent anti-penetration properties, which is applied to the fields such as hangar protective door, disclosure satisfy that the requirement of shell protection.
3 target plate damage results of table
Front | The back side | Strain requires |
Maximum pit depth 15.0mm, flawless | Maximum height of projection 18.0mm, flawless | < 5% |
In addition to the implementation, the present invention can also have other embodiment.It is all to use equivalent substitution or equivalent transformation shape
At technical solution, fall within the scope of protection required by the present invention.
Claims (3)
1. a kind of high-strength penertration resistance steel of protective door, it is characterised in that contain by weight percentage:C:0.24 ~ 0.34%, Si:
0.20 ~ 1.00%, Mn:0.20 ~ 1.00%, P:≤ 0.015%, S:≤ 0.0020%, Alt:0.015 ~ 0.050%, Cr:0.10~
0.50%, Ni:0.20 ~ 1.00%, Mo:0.10 ~ 0.50%, Nb≤0.050%, V≤0.050%, Ti≤0.050%, B:0.0005~
0.0035%, Ceq:≤ 0.65%, remaining is Fe and inevitable impurity;Wherein the sum of Si, Mn, Cr, Ni, Mo content is less than
3.00%, the sum of Nb, V, Ti content is less than 0.12%.
2. the high-strength penertration resistance steel of protective door as described in claim 1, it is characterised in that thickness be 20 ~ 80mm, yield strength >=
1200MPa, tensile strength >=1600MPa, elongation after fracture >=8%, 477 ~ 555HBW of Brinell hardness, -40 DEG C of low-temperature flexibilities >=
15J。
3. the high-strength penertration resistance Heat-Treatment of Steel method of protective door as claimed in claim 1 or 2, it is characterised in that:Hardening heat
850 ~ 920 DEG C, obtain uniformly tiny austenite grain, all lath martensites of structure of steel after quenching;Temperature 170 ~
250 DEG C, eliminate steel plate residual stress;Wherein, Quench heating is carried out in normalizing furnace, is completed in Cooling Process;Tempering heating exists
It carries out in tempering furnace, completed in process air cooler.
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109652624A (en) * | 2019-01-04 | 2019-04-19 | 南京钢铁股份有限公司 | A kind of superhigh intensity protection steel and its manufacturing method |
CN110117708A (en) * | 2019-04-30 | 2019-08-13 | 河北文丰钢铁有限公司 | A kind of process for quenching of thin specification steel plate |
CN113201693A (en) * | 2021-05-11 | 2021-08-03 | 北京理工大学 | Bullet steel for penetration and killing of multifunctional warhead and preparation method thereof |
CN113249653A (en) * | 2021-05-11 | 2021-08-13 | 北京理工大学 | Bullet steel for natural fragment warhead and preparation method thereof |
CN113913600A (en) * | 2021-04-12 | 2022-01-11 | 河南北方红阳机电有限公司 | Heat treatment process method for D50Re material penetration type shell |
CN115341138A (en) * | 2022-07-12 | 2022-11-15 | 江阴兴澄特种钢铁有限公司 | High-strength protective steel plate and manufacturing method thereof |
CN115637383A (en) * | 2022-10-26 | 2023-01-24 | 东北大学 | 500 HBW-hardness low-alloy high-strength high-hardness martensite protective steel and manufacturing method thereof |
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CN103820717A (en) * | 2014-01-28 | 2014-05-28 | 莱芜钢铁集团有限公司 | Steel plate and preparation method thereof |
CN103882333A (en) * | 2012-12-21 | 2014-06-25 | 鞍钢股份有限公司 | Steel for 620 MPa level nuclear first grade equipment and manufacturing method thereof |
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2018
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Patent Citations (2)
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CN103882333A (en) * | 2012-12-21 | 2014-06-25 | 鞍钢股份有限公司 | Steel for 620 MPa level nuclear first grade equipment and manufacturing method thereof |
CN103820717A (en) * | 2014-01-28 | 2014-05-28 | 莱芜钢铁集团有限公司 | Steel plate and preparation method thereof |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109652624A (en) * | 2019-01-04 | 2019-04-19 | 南京钢铁股份有限公司 | A kind of superhigh intensity protection steel and its manufacturing method |
CN110117708A (en) * | 2019-04-30 | 2019-08-13 | 河北文丰钢铁有限公司 | A kind of process for quenching of thin specification steel plate |
CN110117708B (en) * | 2019-04-30 | 2021-03-26 | 河北文丰钢铁有限公司 | Quenching method of thin steel plate |
CN113913600A (en) * | 2021-04-12 | 2022-01-11 | 河南北方红阳机电有限公司 | Heat treatment process method for D50Re material penetration type shell |
CN113201693A (en) * | 2021-05-11 | 2021-08-03 | 北京理工大学 | Bullet steel for penetration and killing of multifunctional warhead and preparation method thereof |
CN113249653A (en) * | 2021-05-11 | 2021-08-13 | 北京理工大学 | Bullet steel for natural fragment warhead and preparation method thereof |
CN115341138A (en) * | 2022-07-12 | 2022-11-15 | 江阴兴澄特种钢铁有限公司 | High-strength protective steel plate and manufacturing method thereof |
CN115341138B (en) * | 2022-07-12 | 2024-04-19 | 江阴兴澄特种钢铁有限公司 | High-strength protective steel plate and manufacturing method thereof |
CN115637383A (en) * | 2022-10-26 | 2023-01-24 | 东北大学 | 500 HBW-hardness low-alloy high-strength high-hardness martensite protective steel and manufacturing method thereof |
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