CN103911553A - Bank ATM machine high-strength anti-knock steel plate and manufacture method - Google Patents
Bank ATM machine high-strength anti-knock steel plate and manufacture method Download PDFInfo
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- CN103911553A CN103911553A CN201410101840.7A CN201410101840A CN103911553A CN 103911553 A CN103911553 A CN 103911553A CN 201410101840 A CN201410101840 A CN 201410101840A CN 103911553 A CN103911553 A CN 103911553A
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Abstract
The invention aims at market requirement of high-strength steel plate technology used by a bank ATM automatic teller machine, disadvantages of insufficient low-grade steel strength and anti-knock anti-fall bulletproof performances can be changed, the low carbon and manganese content are designed, a proper amount of niobium vanadium titanium copper microalloy element can be added, a converter is used for rapidly smelting, the steel is refined outside the furnace and is refined through degassing, the molten steel purity degree is improved, and the invention provides a bank ATM machine high-strength anti-knock steel plate and a manufacture method, through a high rigidity four-roll reversible rough rolling/refine rolling temperature control controlled rolling technology, the steel strength, toughness and steel plate flatness are improved, and a pearlite and ferrite microstructure can be obtained. The method has the advantages of short flow, high efficiency, easy operation, easy welding and low cost, the plate flatness control can satisfy the manufacture and usage of the bank 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 the unmanned automatic depositing-withdrawing machinery of banking industry, the extensive operation of self-help bank, the needs of people's routine work life, go on a journey autonomous self-service drawing, deposit are facilitated, and bank ATM Automated Teller Machine to antiknock, anti-fall, put that to play performance requriements very high, need steel plate to there is suitable high strength and toughness combination, inner installation access banknote promotes and falls meticulous device, and casing must be straight, the operations such as hindering access banknote of can not getting stuck.Common low level steel strength, antiknock be anti-to be fallen ballistic performance and can not meet above-mentioned requirements, therefore, need to have a kind of steel plate to have 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 resists falls the shellproof deficiency that waits, design low-carbon (LC), manganese content, add appropriate niobium vanadium titanium copper microalloy element, utilize converter 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 the reversible roughing finish rolling of too high rigidity four roller 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, easily welding, with low cost, plate shape flatness control meets banking system ATM automatic depositing-withdrawing and manufactures and use.
The high-strength antiknock steel plate of a kind of ATM in bank of the present invention technical scheme is to contain by mass percentage 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 quality percentage composition 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 is 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 moulding; Slab reheats; Roughing; Finish rolling; Finish rolling plate shape is controlled; 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, adjust niobium vanadium titanium copper content; Finally add ferro-boron;
(2) VD or RH vacuum outgas: vacuum 200Pa process 20-22 minute below, argon gas soft blow 10 minutes after line feeding;
(3) heating of plate blank: soaking temperature scope 1120-1190 ℃, soaking time scope 2.8-4.0 hour;
(4) roughing: start rolling temperature 1050-1130 ℃, single pass draft 18-24%;
(5) finish rolling: start rolling temperature scope 850-950 ℃, finishing temperature 810-860 ℃, 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 resists falls the shellproof deficiency that waits, design low-carbon (LC), manganese content, add appropriate niobium vanadium titanium copper microalloy element, utilize converter 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 the reversible roughing finish rolling of too high rigidity four roller 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, easily 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, reached excellent obdurability coupling, good-toughness.By special controlled rolling technique, the perlite being 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, unit elongation 17-25% ,-40 ℃ 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 of manufacturing transports German damaged explosion-proof test to, 60 meters of drop shutter tests that high-altitude is liftoff are excellent, anti-bullet explosion-proof test is qualified, meets bank and uses, and various countries distribute all over the world.
embodiment:
In order to understand better the present invention, 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, contains following composition: carbon 0.09-0.20% by mass percentage; 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 quality percentage composition 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 is 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 moulding; Slab reheats; Roughing; Finish rolling; Finish rolling plate shape is controlled; 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, adjust niobium vanadium titanium copper content; Finally add ferro-boron;
(2) VD/RH vacuum outgas: vacuum 200Pa processes 20-22 minute below, argon gas soft blow 10 minutes after line feeding;
(3) heating of plate blank: soaking temperature scope 1120-1190 ℃, soaking time scope 2.8-4.0 hour; Suppress Austenite Grain Growth by the Nb (CN), TiN particle and the low-temperature heat that utilize small and dispersed, obtain tiny and uniform austenite crystal;
(4) roughing: start rolling temperature 1050-1130 ℃, single pass draft 18-24%; By recrystallization softening austenite crystal repeatedly.
(5) finish rolling: start rolling temperature scope 850-950 ℃, finishing temperature 810-860 ℃, single pass draft 15-20%; Impose aximal deformation value in crystallization austenitic area not, 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 (℃): 1150; Soaking time (hour): 3.5; Roughing temperature (℃): 1110; Roughing single pass draft (%): be greater than 20; Final rolling temperature (℃): 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 ℃): 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:
100 meters of skies of steel plate, use 53 formula 7.62mm ballistic rifles, and 53 5 of formula 7.62mm armour piercing incendiary shelies 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 (℃): 1160; Soaking time (hour): 3.0; Roughing temperature (℃): 1100; Roughing single pass draft (%): 22; Final rolling temperature (℃): 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 ℃): 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:
100 meters of skies of steel plate, use 53 formula 7.62mm ballistic rifles, and 53 5 of formula 7.62mm armour piercing incendiary shelies 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 (℃): 1130; Soaking time (hour): 4.0; Roughing temperature (℃): 1070; Roughing single pass draft (%): 24; Final rolling temperature (℃): 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 ℃): 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:
100 meters of skies of steel plate, use 53 formula 7.62mm ballistic rifles, and 53 5 of formula 7.62mm armour piercing incendiary shelies are without major injury.
Claims (8)
1. the high-strength antiknock steel plate of ATM in bank, is characterized in that, contains by mass percentage 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.
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 quality percentage composition niobium content be 0.029%, copper content is 0.25-0.55%.
3. the high-strength antiknock steel plate of a kind of ATM in bank according to claim 1, is characterized in that, this steel plate thickness is 12.7mm, and the 40 degrees below zero low-temperature flexibility of steel reaches 120 joules.
4. the high-strength antiknock steel plate of a kind of ATM in bank according to claim 3, is characterized in that planeness≤1mm/2m;
The yield strength scope 480-560MPa of steel plate, tensile strength scope is at 720-860MPa, unit elongation 17-25%.
5. the high-strength antiknock steel plate of a kind of ATM in bank according to claim 4, is characterized in that, this steel plate controlled rolling weave construction is that perlite adds ferrite.
6. the high-strength antiknock steel plate of a kind of ATM in bank according to claim 4, is characterized in that, the planeness of this steel plate is 0.3-0.7mm/2m.
7. the manufacture method of the high-strength antiknock steel plate of a kind of ATM in bank as claimed in claim 1, is characterized in that, comprises following processing step: LF external refining, adds microalloy element; VD or RH vacuum outgas; Continuous casting moulding; Slab reheats; Roughing; Finish rolling; Finish rolling plate shape is controlled; Leveling; Finished steel plate.
8. the manufacture method of the high-strength antiknock steel plate of a kind of ATM in bank according to claim 6, is characterized in that, processing step is specially:
(1) LF external refining: heat-up time 15-20 minute, make white slag desulfurization, add niobium vanadium titanium copper microalloy, adjust niobium vanadium titanium copper content; Finally add ferro-boron;
(2) VD or RH vacuum outgas: vacuum 200Pa process 20-22 minute below, argon gas soft blow 10 minutes after line feeding;
(3) heating of plate blank: soaking temperature scope 1120-1190 ℃, soaking time scope 2.8-4.0 hour;
(4) roughing: start rolling temperature 1050-1130 ℃, single pass draft 18-24%;
(5) finish rolling: start rolling temperature scope 850-950 ℃, finishing temperature 810-860 ℃, single pass draft 15-20%;
(6) hot straightening :≤1.0mm/2m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410101840.7A CN103911553B (en) | 2014-03-19 | 2014-03-19 | A kind of high-strength antiknock steel plate of ATM in bank and manufacture method thereof |
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| CN201410101840.7A CN103911553B (en) | 2014-03-19 | 2014-03-19 | A kind of high-strength antiknock steel plate of ATM in bank and manufacture method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106148824A (en) * | 2016-08-30 | 2016-11-23 | 山东钢铁股份有限公司 | A kind of C level armoured van armour plate and preparation method thereof |
| CN106636961A (en) * | 2016-10-17 | 2017-05-10 | 哈尔滨工程大学 | Cu-containing nanophase strengthened easy-to-weld steel and preparation method |
| CN107513671A (en) * | 2017-07-20 | 2017-12-26 | 首钢集团有限公司 | Steel plate for shield 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 |
| CN110747393A (en) * | 2019-09-30 | 2020-02-04 | 鞍钢股份有限公司 | High-strength steel plate of ATM (automatic teller machine) and manufacturing method thereof |
| CN111876558A (en) * | 2020-07-21 | 2020-11-03 | 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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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106148824A (en) * | 2016-08-30 | 2016-11-23 | 山东钢铁股份有限公司 | A kind of C level armoured van armour plate and preparation method thereof |
| CN106636961A (en) * | 2016-10-17 | 2017-05-10 | 哈尔滨工程大学 | Cu-containing nanophase strengthened easy-to-weld steel and preparation method |
| 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 |
| CN107513671A (en) * | 2017-07-20 | 2017-12-26 | 首钢集团有限公司 | Steel plate for shield 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 |
| CN110747393A (en) * | 2019-09-30 | 2020-02-04 | 鞍钢股份有限公司 | High-strength steel plate of ATM (automatic teller machine) and manufacturing method thereof |
| CN111876558A (en) * | 2020-07-21 | 2020-11-03 | 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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