CN103911553B - A kind of high-strength antiknock steel plate of ATM in bank and manufacture method thereof - Google Patents
A kind of high-strength antiknock steel plate of ATM in bank and manufacture method thereof Download PDFInfo
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- CN103911553B CN103911553B CN201410101840.7A CN201410101840A CN103911553B CN 103911553 B CN103911553 B CN 103911553B CN 201410101840 A CN201410101840 A CN 201410101840A CN 103911553 B CN103911553 B CN 103911553B
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Abstract
The present invention be directed to bank ATM automatic teller machine and use High Strength Steel Plate technical market demand, change low level steel strength, antiknock is anti-falls shellproof deficiency such as grade, design low-carbon (LC), Fe content, add appropriate niobium vanadium titanium copper microalloy element, converter is utilized to smelt fast, through external refining and degassed refining, improve Molten Steel Cleanliness, the high-strength antiknock steel plate of a kind of ATM in bank and manufacture method thereof are provided, through too high rigidity four roller reversible roughing finish rolling temperature control controlled rolling technology, improve steel strong, the method of toughness and steel plate flatness, obtain perlite, ferrite metallographic structure, the method flow process is short, efficiency is high, easy to operate, easy welding, with low cost, plate shape flatness control meets manufacture and the use of banking system ATM automatic teller machine.
Description
Technical field
The present invention relates to high tensile steel plate manufacturing technology field, particularly relate to the high-strength antiknock steel plate of a kind of ATM in bank and manufacture method thereof.
Background technology
Flourish along with banking industry unmanned automatic depositing-withdrawing machinery, the extensive operation of self-help bank, facilitate the needs of people's routine work life, go on a journey autonomous self-service drawing, deposit, and bank ATM Automated Teller Machine to antiknock, anti-to fall, put that to play performance requriements very high, steel plate is needed to have suitable high strength and toughness combination, inner installation access banknote promotes and falls meticulous device, and casing must be straight, can not get stuck and hinder operations such as accessing banknote.Common low level steel strength, antiknock be anti-falls ballistic performance and can not meet above-mentioned requirements, therefore, needs a kind of steel plate and has the high-strength capability of antidetonance.
Summary of the invention
The present invention be directed to bank ATM automatic teller machine and use High Strength Steel Plate technical market demand, change low level steel strength, antiknock is anti-falls shellproof deficiency such as grade, design low-carbon (LC), Fe content, add appropriate niobium vanadium titanium copper microalloy element, converter is utilized to smelt fast, through external refining and degassed refining, improve Molten Steel Cleanliness, the high-strength antiknock steel plate of a kind of ATM in bank and manufacture method thereof are provided, through too high rigidity four roller reversible roughing finish rolling temperature control controlled rolling technology, improve steel strong, the method of toughness and steel plate flatness, obtain perlite, ferrite metallographic structure, the method flow process is short, efficiency is high, easy to operate, easy welding, with low cost, plate shape flatness control meets banking system ATM automatic depositing-withdrawing and manufactures and use.
A kind of ATM in bank of the present invention high-strength antiknock steel plate technical scheme is, by mass percentage containing following composition: carbon 0.09-0.20%; Silicon 0.10-0.60%; Manganese 0.80-2.50%; Copper 0.20-0.55%; Phosphorus≤0.025%; Sulphur≤0.005%; Niobium 0.012-0.060%; Vanadium 0.015-0.075%; Titanium 0.012-0.045%; Aluminium 0.012-0.045%; All the other are Fe and inevitable impurity.
This steel plate by mass percentage niobium content be 0.029%, copper content is 0.25-0.55%.
This steel plate thickness is 12.7mm, and the 40 degrees below zero low-temperature flexibility of steel reaches 120 joules.
Planeness≤1mm/2m.The yield strength scope 480-560MPa of steel plate, tensile strength scope at 720-860MPa, unit elongation 17-25%.
This steel plate controlled rolling weave construction is that perlite adds ferrite.
The planeness of this steel plate is 0.3-0.7mm/2m.
The manufacture method of the high-strength antiknock steel plate of above-mentioned a kind of ATM in bank, comprises following processing step: LF external refining, adds the microalloy elements such as niobium vanadium titanium copper; VD or RH vacuum outgas; Continuous casting is shaping; Slab reheats; Roughing; Finish rolling; Finish rolling Strip Shape Control; Leveling; Finished steel plate.
Processing step is specially:
(1) LF external refining: heat-up time 15-20 minute, make white slag desulfurization, add niobium vanadium titanium copper microalloy, adjustment niobium vanadium titanium copper content; Finally add ferro-boron;
(2) VD or RH vacuum outgas: below vacuum 200Pa processes 20-22 minute, argon gas soft blow 10 minutes after line feeding;
(3) heating of plate blank: soaking temperature range 1120-1190 DEG C, soaking time scope 2.8-4.0 hour;
(4) roughing: start rolling temperature 1050-1130 DEG C, single pass draft 18-24%;
(5) finish rolling: start rolling temperature scope 850-950 DEG C, finishing temperature 810-860 DEG C, single pass draft 15-20%;
(6) hot straightening :≤1.0mm/2m.
Beneficial effect of the present invention is: the present invention be directed to bank ATM automatic teller machine and use High Strength Steel Plate technical market demand, change low level steel strength, antiknock is anti-falls shellproof deficiency such as grade, design low-carbon (LC), Fe content, add appropriate niobium vanadium titanium copper microalloy element, converter is utilized to smelt fast, through external refining and degassed refining, improve Molten Steel Cleanliness, the high-strength antiknock steel plate of a kind of ATM in bank and manufacture method thereof are provided, through too high rigidity four roller reversible roughing finish rolling temperature control controlled rolling technology, improve steel strong, the method of toughness and steel plate flatness, obtain perlite, ferrite metallographic structure, the method flow process is short, efficiency is high, easy to operate, easy welding, with low cost, plate shape flatness control meets manufacture and the use of banking system ATM automatic teller machine.
Adopt the present invention to produce 12.7mm plate of moderate thickness High Strength Construction Steel, reach excellent obdurability coupling, good-toughness.By Special controlling rolling technology, the perlite be mainly in metallographic structure and ferrite, the planeness≤1mm/2m of steel plate.The yield strength scope 480-560MPa of steel plate, tensile strength scope is at 720-860MPa, and unit elongation 17-25% ,-40 DEG C of low-temperature flexibilities are greater than 120 joules.The present invention compared with prior art, plate shape and performance quality controlling party mask have substantial progress, implementation result is good, it is qualified that the finished product manufactured transports German damaged explosion-proof test to, 60 meters of drop shutter tests that high-altitude is liftoff stand intact, anti-bullet explosion-proof test is qualified, and meet bank and use, distribute all over the world various countries.
embodiment:
In order to understand the present invention better, describe technical scheme of the present invention in detail with specific examples below, but the present invention is not limited thereto.
The high-strength antiknock steel plate of a kind of ATM in bank of the present invention, by mass percentage containing following composition: carbon 0.09-0.20%; Silicon 0.10-0.60%; Manganese 0.80-2.50%; Copper 0.20-0.55%; Phosphorus≤0.025%; Sulphur≤0.005%; Niobium 0.012-0.060%; Vanadium 0.015-0.075%; Titanium 0.012-0.045%; Aluminium 0.012-0.045%; All the other are Fe and inevitable impurity.
This steel plate by mass percentage niobium content be 0.029%, copper content is 0.25-0.55%.
This steel plate thickness is 12.7mm, and the 40 degrees below zero low-temperature flexibility of steel reaches 120 joules.
Planeness≤1mm/2m.The yield strength scope 480-560MPa of steel plate, tensile strength scope at 720-860MPa, unit elongation 17-25%.
This steel plate controlled rolling weave construction is that perlite adds ferrite.
The actual planeness of this steel plate is 0.3-0.7mm/2m.
A manufacture method for the high-strength antiknock steel plate of ATM in bank, comprises following processing step: LF external refining; Add the microalloy elements such as niobium vanadium titanium copper; VD or RH vacuum outgas; Continuous casting is shaping; Slab reheats; Roughing; Finish rolling; Finish rolling Strip Shape Control; Leveling; Finished steel plate.
Processing step is specially:
(1) LF external refining: heat-up time 15-20 minute, make white slag desulfurization, add niobium vanadium titanium copper microalloy, adjustment niobium vanadium titanium copper content; Finally add ferro-boron;
(2) VD/RH vacuum outgas: below vacuum 200Pa processes 20-22 minute, argon gas soft blow 10 minutes after line feeding;
(3) heating of plate blank: soaking temperature range 1120-1190 DEG C, soaking time scope 2.8-4.0 hour; By utilizing the Nb of small and dispersed (CN), TiN particle and low-temperature heat to suppress Austenite Grain Growth, obtain tiny and uniform austenite crystal;
(4) roughing: start rolling temperature 1050-1130 DEG C, single pass draft 18-24%; By recrystallization softening austenite crystal repeatedly.
(5) finish rolling: start rolling temperature scope 850-950 DEG C, finishing temperature 810-860 DEG C, single pass draft 15-20%; Impose aximal deformation value in non-crystallization austenitic area, make austenite crystal be drawn into deformation bands.
(6) hot straightening :≤1.0mm/2m.
Embodiment 1
Slab melting composition is:
C:0.17%, Si:0.25%, Mn:2.25%, P:0.016%, S:0.002%, Nb:0.029%, V:0.065%, Ti:0.023%, Al:0.020%, Cu:0.37%; All the other are Fe and inevitable impurity.
Slab soaking temperature (DEG C): 1150; Soaking time (hour): 3.5; Roughing temperature (DEG C): 1110; Roughing single pass draft (%): be greater than 20; Final rolling temperature (DEG C): open rolling 870, finish to gauge 830; Finish rolling single pass draft (%): be greater than 18;
Mechanical property of steel plate:
Specification: steel plate thickness 12.7mm; Yield strength (MPa): 525; Tensile strength (MPa): 760; Elongation after fracture (%): 18; Clod wash: qualified; V-type impact of collision merit (-40 DEG C): 150J, 145J, 152J;
Resist and fall test:
Make ATM casing, common ground is freely dropped in 60 meters of high-altitudes, and drastic deformation, disrepair phenomenon do not occur;
Anti-bullet explosion-proof test:
Steel plate 100 meters of skies, use 53 formula 7.62mm ballistic rifles, and 53 formula 7.62mm armour piercing incendiary shelies 5 are without major injury.
Embodiment 2
Slab melting composition is:
C:0.16%, Si:0.45%, Mn:1.90%, P:0.018%, S:0.0025%, Nb:0.036%, V:0.054%, Ti:0.026%, Al:0.024%, Cu:0.25%; All the other are Fe and inevitable impurity.
Slab soaking temperature (DEG C): 1160; Soaking time (hour): 3.0; Roughing temperature (DEG C): 1100; Roughing single pass draft (%): 22; Final rolling temperature (DEG C): open rolling 860, finish to gauge 810; Finish rolling single pass draft (%): 20;
Mechanical property of steel plate: specification: steel plate thickness 12.7mm; Yield strength (MPa): 510; Tensile strength (MPa): 780; Elongation after fracture (%): 21; Clod wash: qualified; V-type impact of collision merit (-40 DEG C): 140J, 135J, 148J;
Resist and fall test:
Make ATM casing, common ground is freely dropped in 60 meters of high-altitudes, and drastic deformation, disrepair phenomenon do not occur;
Anti-bullet explosion-proof test:
Steel plate 100 meters of skies, use 53 formula 7.62mm ballistic rifles, and 53 formula 7.62mm armour piercing incendiary shelies 5 are without major injury.
Embodiment 3
Slab melting composition is:
C:0.12%, Si:0.55%, Mn:1.75%, P:0.012%, S:0.003%, Nb:0.015%, V:0.020%, Ti:0.045%, Al:0.033%, Cu:0.30%; All the other are Fe and inevitable impurity.
Slab soaking temperature (DEG C): 1130; Soaking time (hour): 4.0; Roughing temperature (DEG C): 1070; Roughing single pass draft (%): 24; Final rolling temperature (DEG C): open rolling 850, finish to gauge 800; Finish rolling single pass draft (%): be greater than 17;
Mechanical property of steel plate:
Specification: steel plate thickness 12.7mm; Yield strength (MPa): 515; Tensile strength (MPa): 760; Elongation after fracture (%): 20; Clod wash: qualified; V-type impact of collision merit (-40 DEG C): 155J, 147J, 150J;
Resist and fall test:
Make ATM casing, common ground is freely dropped in 60 meters of high-altitudes, and drastic deformation, disrepair phenomenon do not occur;
Anti-bullet explosion-proof test:
Steel plate 100 meters of skies, use 53 formula 7.62mm ballistic rifles, and 53 formula 7.62mm armour piercing incendiary shelies 5 are without major injury.
Claims (2)
1. the high-strength antiknock steel plate of ATM in bank, is characterized in that, by mass percentage containing following composition: carbon 0.09-0.20%; Silicon 0.10-0.60%; Manganese 0.80-2.50%; Copper 0.20-0.55%; Phosphorus≤0.025%; Sulphur≤0.005%; Niobium 0.012-0.060%; Vanadium 0.015-0.075%; Titanium 0.012-0.045%; Aluminium 0.012-0.045%; All the other are Fe and inevitable impurity; This steel plate thickness is 12.7mm, and the 40 degrees below zero low-temperature flexibility of steel reaches 120 joules;
Planeness≤1mm/2m; The yield strength scope 480-560MPa of steel plate, tensile strength scope at 720-860MPa, unit elongation 17-25%;
This steel plate controlled rolling weave construction is that perlite adds ferrite;
The manufacture method of the high-strength antiknock steel plate of described a kind of ATM in bank, processing step is:
(1) LF external refining: heat-up time 15-20 minute, make white slag desulfurization, add niobium vanadium titanium copper microalloy, adjustment niobium vanadium titanium copper content; Finally add ferro-boron;
(2) VD or RH vacuum outgas: below vacuum 200Pa processes 20-22 minute, argon gas soft blow 10 minutes after line feeding;
(3) heating of plate blank: soaking temperature range 1120-1190 DEG C, soaking time scope 2.8-4.0 hour;
(4) roughing: start rolling temperature 1050-1130 DEG C, single pass draft 18-24%;
(5) finish rolling: start rolling temperature scope 850-950 DEG C, finishing temperature 810-860 DEG C, single pass draft 15-20%;
(6) hot straightening :≤1.0mm/2m.
2. the high-strength antiknock steel plate of a kind of ATM in bank according to claim 1, is characterized in that, this steel plate by mass percentage niobium content be 0.029%, copper content is 0.25-0.55%.
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| CN106148824B (en) * | 2016-08-30 | 2017-10-31 | 山东钢铁股份有限公司 | A kind of C grades of armoured van armour plate and preparation method thereof |
| CN106636961B (en) * | 2016-10-17 | 2018-04-24 | 哈尔滨工程大学 | One kind mutually strengthens easily welding steel and preparation method containing Cu nanometers |
| CN107513671B (en) * | 2017-07-20 | 2019-09-03 | 首钢集团有限公司 | A kind of shield steel plate and preparation method thereof |
| CN108447194A (en) * | 2018-05-28 | 2018-08-24 | 天津融信金安科技有限公司 | A kind of ATM protective cabins intelligent protection system and method |
| CN110747393B (en) * | 2019-09-30 | 2021-02-23 | 鞍钢股份有限公司 | High-strength steel plate of ATM (automatic teller machine) and manufacturing method thereof |
| CN111876558B (en) * | 2020-07-21 | 2022-04-22 | 安阳钢铁股份有限公司 | Method for producing peritectic high-strength steel based on LF + VD process and accurately controlling carbon content |
| CN113186446A (en) * | 2021-04-02 | 2021-07-30 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Process for controlling pearlite morphology and carbon-nitrogen compound precipitation of microalloyed medium plate |
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| CN102864384A (en) * | 2012-08-31 | 2013-01-09 | 中国重汽集团济南动力有限公司 | High-strength automobile axle housing material and method for manufacturing axle housing |
| CN103422022A (en) * | 2013-09-14 | 2013-12-04 | 济钢集团有限公司 | Large-thickness steel plate for low-temperature structure and production method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102864384A (en) * | 2012-08-31 | 2013-01-09 | 中国重汽集团济南动力有限公司 | High-strength automobile axle housing material and method for manufacturing axle housing |
| CN103436783A (en) * | 2013-08-28 | 2013-12-11 | 济钢集团有限公司 | Manufacture method of quenching high-strength steel plate for heavy truck body structure |
| CN103422022A (en) * | 2013-09-14 | 2013-12-04 | 济钢集团有限公司 | Large-thickness steel plate for low-temperature structure and production method thereof |
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