CN110079741A - A kind of armour plate and its manufacturing method - Google Patents
A kind of armour plate and its manufacturing method Download PDFInfo
- Publication number
- CN110079741A CN110079741A CN201910529738.XA CN201910529738A CN110079741A CN 110079741 A CN110079741 A CN 110079741A CN 201910529738 A CN201910529738 A CN 201910529738A CN 110079741 A CN110079741 A CN 110079741A
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- China
- Prior art keywords
- plate
- quenching
- uncoiling
- intensity
- bell
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Classifications
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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
-
- 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
- C21D1/26—Methods of annealing
-
- 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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- 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
- C22C38/02—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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- 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
-
- 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
- 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
Abstract
The invention belongs to steelmaking technical fields, more particularly to a kind of armour plate and its manufacturing method, high intensity and high tenacity are obtained by quenching plus tempering, and by bell-type annealing to reduce hot rolled coil intensity after normal hot rolling, be conducive to later period uncoiling and shaping, then keep good plate shape through press quenching processing.Using bullet proof steel produced by the invention, enterprise's blank is filled up, increases rolling shapes, realizes higher final product quality and yield rate, there is good economic benefit.
Description
Technical field
The invention belongs to steelmaking technical fields, and in particular to a kind of armour plate and its manufacturing method.
Background technique
Armour plate can divide two major classes by its production technology at present: one kind is hot rolled steel plate, with Sweden Swedish Steel
The Domax Protect (Defend) 250 and 300 of AB (SSAB) company is representative, and this kind of steel plate, which removes, has good shellproof function
Can be outer, processing performance, solderability and cold-bending property are good, and tensile strength is greater than 900 MPa, generally less than 1 000 MPa；
It is another kind of to pass through heat treatment after the hot rolling of this kind of steel plate system using the Domax500 of SSAB company, Sweden as representative for heat-treated steel plate
It quenches and meets intensity requirement, intensity is high, typically larger than 1500 MPa, but processing performance, solderability and cold-bending property are remote
Not as good as hot rolling class steel plate.
As the situation is tense for domestic and international anti-terrorism, the demand of the armored vehicle with ballistic performance is increased year by year.In addition,
The armor demand required for higher ballistic protection level is consequently increased.In daily life, in addition to this, some steel plates are also
Need to be manufactured with the ballistic gate of shellproof, anti-shooting function, bulletproof halmet, flak jackets, missile-resistant shield, or for silver to be made
Row sales counter, confidential safety cabinet, antiriot vehicle, ballproof cash truck, submarine, landing craft, revenue cutter, the bullet-proof member of the devices such as helicopter.
This patent main inventive develops a kind of lightweight high-intensity armour plate for armoured van, armoured van armour plate
Meet A grades of level of protection in " dedicated armoured van guard technology condition " (GA 164-2005).Domestic generally use contains Gao Ge
The disadvantages of Tempering and Quenching steel plate of nickel, but its there are intensity high, forming property and welding performance are poor, price.
Summary of the invention
Bullet proof steel production is primarily present following technical problem:
1. reducing smelting cost: using microalloy treatment, add alloying element less and realize reduction smelting cost.
2. hot rolled coil intensity is high: reducing hot rolled coil intensity using bell-type annealing processing, be conducive to uncoiling and press quenching is heat-treated.
3. good quenching back plate shape: using press quenching and tempering, keep good plate shape.
4. steel plate hot process uniformity problem: it is pressed using press quenching multiple spot and is being uniformly distributed cooling water jet, it is real
The uniform cooling of existing steel plate.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of manufacturing method of armour plate obtains high intensity and high tenacity by quenching plus tempering, and
Be conducive to later period uncoiling and shaping, then handle through press quenching to reduce hot rolled coil intensity by bell-type annealing after normal hot rolling
Keep good plate shape.
Including following process flow:
Molten iron pretreatment → converter smelting → LF refining → RH refining → continuous casting → heating → 2300mm hot continuous rolling → control
Cool down → batch → sample → function inspection → packaging is payed into the treasury → delivers
Uncoiling → cutting plate → pressure heat treatment (quenching+tempering) → inspection by sampling performance → is packed and stored → delivers
(1) according to ingredient standard lower limit strict control each element content, microalloying smelting is carried out；
(2) coil of strip intensity being reduced using bell-type annealing, bell-type annealing parameter setting is that coil of strip is heated to 680 DEG C or more,
8-10 hour of furnace inside holding, then furnace cooling；
(3) uncoiling shaping carries out uncoiling and shaping on 2250 uncoilers, cuts plate；
(4) press quenching is heat-treated, static pressure quenching heat treatment, is guaranteed that plate is heated cooling uniform, is kept good profile.
The high-strength armour plate of the tensile strength 1700MPa of the method preparation.
A kind of armour plate, chemical composition are calculated as with quality %: C 0.24-0.26, Si 0.4-0.44, Mn
1.15-1.20, Al 0.035-0.050, Ni 0.33-0.97, Cr 0.49-0.55, Mo 0.30-0.34, Cu0.26-0.33,
Ti 0.022-0.026, B 0.0016-0.0020.
Beneficial effects of the present invention:
1700MPa high-strength hot-rolled armor plate of the invention is the excellent strength-toughness being had based on microalloy Multiphase Steel
Match, coil of strip intensity is reduced using bell-type annealing, is conducive to uncoiling, cutting, using press quenching holding plate shape, realizes good plate
Shape control and easy processing technology, armour have excellent processing performance, solderability, reduce production cost and plate is thick
Degree, alternative previous thick and heavy armour plate, reaches light-weighted purpose.Ingredient design on, alloy content is lower, save at
This；In mechanical property, indices reach requirement, and meet the expectation of user；Reasonable heat treatment process reduces the energy and disappears
Consumption reduces cost, protects environment；Reasonable plate thickness guarantees that ballistic performance realizes lightweight and corrosion-resistant effect simultaneously.
Effect: (1) armour plate produced by this technique has excellent mechanical property and good cutting, welding
Etc. processing performances, and have certain weather resistance, user actual use achievees the purpose that reduce car body weight, fully meet use
The use demand at family.
(2) bullet proof steel produced by the invention is used, enterprise's blank is filled up, increases rolling shapes, is realized higher at quality
Amount and yield rate have good economic benefit.
Detailed description of the invention
In order to facilitate the understanding of those skilled in the art, the present invention will be further described below with reference to the drawings.
Fig. 1 is 670 DEG C of hot rolled coil metallographic microscopes of the invention；
Fig. 2 is the metallographic microscope of 200 DEG C of lonneal tissues of the invention.
Specific embodiment
Embodiment 1
One, it makes steel
1, hot metal pre process procedures
It pre-processes into furnace S≤0.005%, P≤0.010% scratches clean slag；Using fine fodder steel scrap.
2, converter procedure
Converter catch carbon hit at first time avoids a little blowing；Ladle argon gas purging before tapping, control tapping hole avoid diffusing.
3, refining procedure
Using LF+RH dual path process, strict control is required to gas content.It is required that LF treatment process keeps micro-positive pressure,
Strict control LF increases N, it is desirable that increases N amount≤10ppm；LF makes the reducing slag of good fluidity, strict control using active lime, fluorite
Argon intensity avoids molten steel exposed as far as possible；Using silicon-calcium wire Calcium treatments, 500 meters of CaSi line are fed, the sufficient nodularization of field trash is made,
Improve properties of product.
4, continuous casting working procedure
Whole process carries out molding casting.It opens using being wrapped in argon gas purging before pouring, casting process accomplishes that no molten steel is exposed, stringent to control
N is inhaled at the mouth of a river processed, and control increases N≤5ppm；Using cinder inclusion in high alkalinity, so as to the removal of steel inclusion；Steel pouring process investment is light
Press function；Steel pouring process keeps permanent pulling rate；The continuous casting degree of superheat controls target and is not more than 25 DEG C.Slab heat crosses hot charging, remaining plate
Base is placed on Ku Nei slow cooling area.
Two, hot rolling
1, heating furnace part
1150~1250 DEG C of heating temperature, 1200~1250 DEG C of target tapping temperature.Heating furnace oven cavity atmosphere is controlled, is reduced
The generation of slab iron scale guarantees that heating temperature is uniform.
2, rolling, reel-up
Waste mill train time selection 3+3 scheme control；The sharing of load of finish rolling model is carried out, guarantees rolling stability；Finish to gauge temperature
Degree: >=890；Coiling temperature: >=650, refrigerating mode opens cold, discontinuous manner using second group.Guarantee the essence of finish to gauge, coiling temperature
Really control；Optimize and revise the control of interstand cooling water.
Heat treatment
1, the heat treatment of perhydro bell-type annealing is carried out using this steel cold rolling mill bell-type annealing line.By coil of strip be heated to 680 DEG C with
On, 8 and a half hours to 10 hours of furnace inside holding, then furnace cooling.
2, quenching+tempering processing is carried out using pressure quenching apparatus.The 890-930 DEG C of time of heating temperature: 2-3min/mm,
3-5min/mm between 180-220 DEG C of tempering temperature.
Comparison diagram 1,2 can be seen that the tissue morphology after 200 DEG C of lonneals in contrast to 670 DEG C of hot rolled coils in Fig. 1
Metallographic is changed.
Embodiment 2
It is as follows according to the component of five groups of steel plates of method described in embodiment 1 manufacture, preparation condition and intensive parameter:
Experimental result:
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment
All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification,
It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to better explain the present invention
Principle and practical application, so that skilled artisan be enable to better understand and utilize the present invention.The present invention is only
It is limited by claims and its full scope and equivalent.
Claims (4)
1. a kind of manufacturing method of armour plate, which is characterized in that obtain high intensity and high-ductility by quenching plus tempering
Property, and after normal hot rolling by bell-type annealing to reduce hot rolled coil intensity, be conducive to later period uncoiling and shaping, then through pressure
Quenching treatment keeps good plate shape.
2. a kind of manufacturing method of armour plate according to claim 1, which is characterized in that
Including following process flow:
Molten iron pretreatment → converter smelting → LF refining → RH refining → continuous casting → heating → 2300mm hot continuous rolling → control is cooling
→ batching → sample → and function inspection → packaging is payed into the treasury → delivers
Uncoiling → cutting plate → pressure heat treatment (quenching+tempering) → inspection by sampling performance → is packed and stored → delivers
(1) according to ingredient standard lower limit strict control each element content, microalloying smelting is carried out；
(2) coil of strip intensity is reduced using bell-type annealing, bell-type annealing parameter setting is that coil of strip is heated to 680 DEG C or more, in furnace
8-10 hour is kept the temperature, then furnace cooling；
(3) uncoiling shaping carries out uncoiling and shaping on 2250 uncoilers, cuts plate；
(4) press quenching is heat-treated, static pressure quenching heat treatment, is guaranteed that plate is heated cooling uniform, is kept good profile.
3. the high-strength armour plate of the tensile strength 1700MPa prepared method according to claim 1.
4. a kind of armour plate according to claim 3, which is characterized in that its chemical composition is calculated as with quality %: C
0.24-0.26, Si 0.4-0.44, Mn 1.15-1.20, Al 0.035-0.050, Ni 0.33-0.97, Cr 0.49-0.55,
Mo 0.30-0.34, Cu0.26-0.33, Ti 0.022-0.026, B 0.0016-0.0020.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910529738.XA CN110079741A (en) | 2019-06-19 | 2019-06-19 | A kind of armour plate and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910529738.XA CN110079741A (en) | 2019-06-19 | 2019-06-19 | A kind of armour plate and its manufacturing method |
Publications (1)
| Publication Number | Publication Date |
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| CN110079741A true CN110079741A (en) | 2019-08-02 |
Family
ID=67424394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910529738.XA Pending CN110079741A (en) | 2019-06-19 | 2019-06-19 | A kind of armour plate and its manufacturing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111118412A (en) * | 2020-03-10 | 2020-05-08 | 晟普特(北京)防护科技有限公司 | Bulletproof steel plate and heat treatment method thereof |
| WO2023213109A1 (en) * | 2022-05-06 | 2023-11-09 | 中国机械总院集团北京机电研究所有限公司 | Accurate heat treatment method for low-carbon low-alloy high-strength thin steel plate |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0501874A1 (en) * | 1991-03-01 | 1992-09-02 | Creusot-Loire Industrie | Procedure for the manufacturing of a plate composite product, stainless armour and an armoured reservoir obtained by that procedure |
| CN1308144A (en) * | 2000-12-25 | 2001-08-15 | 钢铁研究总院 | High-performance impact resisting steel |
| CN104674121A (en) * | 2015-03-10 | 2015-06-03 | 山东钢铁股份有限公司 | Armor steel plate with high anti-bullet property and manufacturing method of armor steel plate |
| CN105088090A (en) * | 2015-08-28 | 2015-11-25 | 宝山钢铁股份有限公司 | Armor plate with tensile strength being 2000 MPa and manufacturing method thereof |
| CN106319347A (en) * | 2016-10-27 | 2017-01-11 | 钢铁研究总院淮安有限公司 | Silicon vanadium steel plate with promoted bulletproof performance and manufacturing method |
| CN108425070A (en) * | 2018-05-22 | 2018-08-21 | 首钢集团有限公司 | A kind of 1000MPa grades of shock wave resistance steel plate and its manufacturing method |
| CN109628835A (en) * | 2018-12-31 | 2019-04-16 | 钢铁研究总院 | One kind can cold roll forming high performance ballistic steel plate and its manufacturing process |
-
2019
- 2019-06-19 CN CN201910529738.XA patent/CN110079741A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0501874A1 (en) * | 1991-03-01 | 1992-09-02 | Creusot-Loire Industrie | Procedure for the manufacturing of a plate composite product, stainless armour and an armoured reservoir obtained by that procedure |
| CN1308144A (en) * | 2000-12-25 | 2001-08-15 | 钢铁研究总院 | High-performance impact resisting steel |
| CN104674121A (en) * | 2015-03-10 | 2015-06-03 | 山东钢铁股份有限公司 | Armor steel plate with high anti-bullet property and manufacturing method of armor steel plate |
| CN105088090A (en) * | 2015-08-28 | 2015-11-25 | 宝山钢铁股份有限公司 | Armor plate with tensile strength being 2000 MPa and manufacturing method thereof |
| CN106319347A (en) * | 2016-10-27 | 2017-01-11 | 钢铁研究总院淮安有限公司 | Silicon vanadium steel plate with promoted bulletproof performance and manufacturing method |
| CN108425070A (en) * | 2018-05-22 | 2018-08-21 | 首钢集团有限公司 | A kind of 1000MPa grades of shock wave resistance steel plate and its manufacturing method |
| CN109628835A (en) * | 2018-12-31 | 2019-04-16 | 钢铁研究总院 | One kind can cold roll forming high performance ballistic steel plate and its manufacturing process |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111118412A (en) * | 2020-03-10 | 2020-05-08 | 晟普特(北京)防护科技有限公司 | Bulletproof steel plate and heat treatment method thereof |
| WO2023213109A1 (en) * | 2022-05-06 | 2023-11-09 | 中国机械总院集团北京机电研究所有限公司 | Accurate heat treatment method for low-carbon low-alloy high-strength thin steel plate |
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Application publication date: 20190802 |