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 PDF

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Publication number
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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strength
steel
protective door
penertration resistance
steel plate
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CN201810347369.8A
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Inventor
陈林恒
徐干成
赵柏杰
祝瑞荣
李成学
胡锋
赵荣贵
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Nanjing Iron and Steel Co Ltd
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Nanjing Iron and Steel Co Ltd
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Priority to CN201810347369.8A priority Critical patent/CN108441768A/en
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/02Ferrous alloys, e.g. steel alloys containing silicon
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/06Ferrous alloys, e.g. steel alloys containing aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/54Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/008Martensite

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  • 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 Articles (AREA)

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

A kind of high-strength penertration resistance steel of protective door and its heat treatment method
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.
CN201810347369.8A 2018-04-18 2018-04-18 A kind of high-strength penertration resistance steel of protective door and its heat treatment method Pending CN108441768A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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)

* Cited by examiner, † Cited by third party
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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