Bank ATM machine high-strength anti-knock steel plate and manufacture method

A technology for ATM machines and manufacturing methods, which is applied in the field of high-strength anti-blast steel plates for bank ATM machines and its manufacturing field, which can solve the problems of unsatisfactory anti-blast, anti-fall, and anti-ballistic properties, and achieve good implementation effects, excellent toughness, and easy welding.

Inactive Publication Date: 2014-07-09
JIGANG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary low-grade steel strength, anti-knock, anti-fall and anti-ballistic properties cannot meet the above requirements. Therefore, there is a need for a steel plate with high-strength anti-knock performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 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%; The rest is Fe and unavoidable impurities.

[0038] Slab soaking temperature (°C): 1150; soaking time (hours): 3.5; rough rolling temperature (°C): 1110; rough rolling single pass reduction rate (%): greater than 20; finish rolling temperature (°C) : Open rolling 870, final rolling 830; finishing rolling single pass reduction rate (%): greater than 18;

[0039] Steel plate mechanical properties:

[0040] Specifications: steel plate thickness 12.7mm; yield strength (MPa): 525; tensile strength (MPa): 760; elongation after fracture (%): 18; cold bending: qualified; V-shaped longitudinal impact energy (-40°C): 150J, 145J, 152J;

[0041] Anti-drop test:

[0042] It is made into an ATM box, which falls freely on the ordinary ground at a height of 60 meters, without severe deformation and damage;

[0043] Bulletproof explosion-proof test:

[0044] Steel plate ...

Embodiment 2

[0047] 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%; The rest is Fe and unavoidable impurities.

[0048] Slab soaking temperature (°C): 1160; soaking time (hours): 3.0; rough rolling temperature (°C): 1100; rough rolling single pass reduction rate (%): 22; finish rolling temperature (°C): Start rolling 860, final rolling 810; finishing rolling single pass reduction rate (%): 20;

[0049]Steel plate mechanical properties: specifications: steel plate thickness 12.7mm; yield strength (MPa): 510; tensile strength (MPa): 780; elongation after fracture (%): 21; cold bending: qualified; V-shaped longitudinal impact energy (- 40°C): 140J, 135J, 148J;

[0050] Anti-drop test:

[0051] It is made into an ATM box, which falls freely on the ordinary ground at a height of 60 meters, without severe deformation and damage;

[0052] Bulletproof explosion-proof test:

[0053] Steel plate 100-meter canopy target, using 53-t...

Embodiment 3

[0056] 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%; The rest is Fe and unavoidable impurities.

[0057] Slab soaking temperature (°C): 1130; soaking time (hours): 4.0; rough rolling temperature (°C): 1070; rough rolling single pass reduction rate (%): 24; finish rolling temperature (°C): Open rolling 850, final rolling 800; finishing rolling single pass reduction rate (%): greater than 17;

[0058] Steel plate mechanical properties:

[0059] Specifications: steel plate thickness 12.7mm; yield strength (MPa): 515; tensile strength (MPa): 760; elongation after fracture (%): 20; cold bending: qualified; V-shaped longitudinal impact energy (-40°C): 155J, 147J, 150J;

[0060] Anti-drop test:

[0061] It is made into an ATM box, which falls freely on the ordinary ground at a height of 60 meters, without severe deformation and damage;

[0062] Bulletproof explosion-proof test:

[0063] Steel plate 100-meter cano...

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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 [0001] The invention relates to the technical field of high-strength steel plate manufacturing, in particular to a high-strength explosion-resistant steel plate for bank ATM machines and a manufacturing method thereof. Background technique [0002] With the vigorous development of unmanned automatic deposit and withdrawal machines in the banking industry, the widespread operation of self-service banks has facilitated people's daily work and life, self-service withdrawals and deposits when traveling, and bank ATM automatic deposit and withdrawal machines are resistant to explosions and Dropping and deflecting performance requirements are very high, and the steel plate should have a suitable combination of high strength and toughness, and a precision device for depositing and withdrawing banknotes is installed inside. Ordinary low-grade steel strength, anti-knock, anti-fall and anti-ballistic properties cannot meet the above requirements. Therefore, there is a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/16
Inventor 冯勇孙卫华孙德民张爱民贾慧领梁英肖丰强周兰聚宋汝贵刘朋周波刘凤兰贾希光
Owner JIGANG GRP
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