CN105483547A - Deep-drawing fingerprint-resistant electro-galvanized plate for household appliance, and preparation method thereof - Google Patents

Deep-drawing fingerprint-resistant electro-galvanized plate for household appliance, and preparation method thereof Download PDF

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Publication number
CN105483547A
CN105483547A CN201510881410.6A CN201510881410A CN105483547A CN 105483547 A CN105483547 A CN 105483547A CN 201510881410 A CN201510881410 A CN 201510881410A CN 105483547 A CN105483547 A CN 105483547A
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galvanized sheet
deep
electrolytic galvanized
resistance
electro
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Inventor
涂元强
蔡捷
黄道兵
董蓓
杜蓉
冯冠文
白会平
宋乙峰
雷泽红
杨宏武
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Wuhan Iron and Steel Co Ltd
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Wuhan Iron and Steel Group Corp
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Priority to CN201510881410.6A priority Critical patent/CN105483547A/en
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    • 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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/04—Making ferrous alloys by melting
    • 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

Abstract

The invention discloses a deep-drawing fingerprint-resistant electro-galvanized plate for a household appliance. The electro-galvanized plate comprises the following chemical ingredients in percentage by weight: 0.0040-0.0080% of C, not greater than 0.020% of Si, 0.10-0.23% of Mn, not greater than 0.020% of P, not greater than 0.015% of S, 0.020-0.060% of sol.Al, not greater than 0.0050% of N, 0.04-0.11% of Ti, 0.0020-0.0045% of B, and the balance Fe and inevitable impurities. The electro-galvanized plate disclosed by the invention is made from ultra-low carbon steel, and a small amount of Ti-B alloy is added, thus the excellent deep-drawing machining performance of the electro-galvanized plate disclosed by the invention can be ensured, and a deformation height of a punched part can be not greater than 0.1mm compared with an undeformed smooth steel plate; therefore, the technical problem of difficult assembly after punching for the present electro-galvanized plate is solved, and the requirements of various complex deep-drawing deformations and assembly in manufacturing for washing machine housings, liquid-crystal-display television back plates and the like of household appliance enterprises are met.

Description

Household electrical appliances deep-draw electrolytic galvanized sheet of resistance to fingerprint and preparation method thereof
Technical field
The invention belongs to zinc-plated sheet material production technical field in metallurgical industry, be specifically related to a kind of household electrical appliances deep-draw electrolytic galvanized sheet of resistance to fingerprint and preparation method thereof.
Background technology
China's electrolytic galvanized sheet is mainly used in high-end household electrical appliances and automotive field, but part high-end kind electrolytic galvanized sheet still needs a large amount of import, comprising the electro-galvanized steel of the resistance to fingerprint product manufacturing liquid crystal backboard for deep draw, not only this product requires to have excellent punching performance but also require to have excellent surface quality and resistance to fingerprint coating performance, concerning the most of electro-galvanized steel board assembly line of China, this requirement is very harsh, be difficult to the requirement meeting liquid crystal backboard industry, the sector uses import Japan and Korea S electro-galvanized steel product in a large number.Therefore, need the exploitation household electrical appliances deep-draw electrolytic galvanized sheet of resistance to fingerprint, meet the ever-increasing demand of domestic household electrical appliances market.
Application number be 201210141737.6 Chinese patent provide a kind of Nb, Ti compound ultra-deep punching galvanized sheet and production method thereof, this technical scheme comprises steel-making, hot rolling, cold rolling, zinc-plated operation, the mass percent of its chemical composition is: C≤0.0022%, Si≤0.006%, Mn:0.08 ~ 0.16%, P≤0.009%, S≤0.008%, Ti:0.033 ~ 0.04%, Nb:0.012 ~ 0.017%, Als:0.025 ~ 0.045%, N≤28ppm, surplus is Fe, the finished product yield strength≤155MPa, tensile strength is 260 ~ 330MPa, unit elongation>=44%, n 90>=0.23, r 90>=2.5, n 45>=0.19, r 45>=1.8.But this product C content in smelting is not more than 0.0022%, production difficulty is large, and cost is high; Due to this product yield strength≤155MPa, base steel is soft, steel plate punching place volatility, and cause assembling difficulty, therefore this heat zinc coating plate does not reach appliance plate as the technical requirements of assembling after the punching press such as washing machine shell, liquid crystal display television back.
Application number be 201210220052.0 Chinese patent provide a kind of gap-free atom cold rolling hot dip galvanizing steel plate and production method thereof, its chemical component weight per-cent is: C:0.0005% ~ 0.0028%, Si≤0.03%, Mn:0.08% ~ 0.20%, Ti:0.02% ~ 0.065%, N≤0.0030%, P≤0.015%, S≤0.010%, surplus is Fe and inevitable tramp element.Cold-rolled steel sheet microstructure grain size number is I6.5 ~ I8.0 level, and yield strength is 165 ~ 200MPa, and tensile strength is 270 ~ 330MPa, elongation after fracture A 80mmbe 38 ~ 44%, Lankford r value>=1.9.But this product is pot galvanize product, and smelt C content requirement in 0.0005% ~ 0.0028% scope, production difficulty is large, and cost is high, therefore use such pot galvanize product to be difficult to adapt to home appliance panel technical requirements, and the market competitiveness is low, is difficult to apply.
Therefore, need to develop that a kind of production difficulty is little, cost is low and be suitable for the household electrical appliances deep-draw electrolytic galvanized sheet of resistance to fingerprint that household electrical appliances apply as washing machine shell, liquid crystal display television back etc.
Summary of the invention
For achieving the above object, the household electrical appliances deep-draw electrolytic galvanized sheet of resistance to fingerprint designed by the present invention, the weight percentage of its chemical composition is: C:0.0040 ~ 0.0080%, Si≤0.020%, Mn:0.10 ~ 0.23%, P≤0.020%, S≤0.015%, sol.Al:0.020 ~ 0.060%, N≤0.0050%, Ti:0.04 ~ 0.11%, B:0.0020 ~ 0.0045%, and all the other are Fe and inevitable impurity.
Preferably, the weight percentage of described electrolytic galvanized sheet chemical composition is: C:0.0050 ~ 0.0065%, Si≤0.020%, Mn:0.15 ~ 0.20%, P≤0.015%, S≤0.015%, sol.Al:0.020 ~ 0.040%, N≤0.0040%, Ti:0.05 ~ 0.10%, B:0.0020 ~ 0.0040%, and all the other are Fe and inevitable impurity.
As more preferably scheme, the weight percentage of described electrolytic galvanized sheet chemical composition is: C:0.0060%, Si:0.011%, Mn:0.16%, P:0.012%, S:0.011%, sol.Al:0.030%, N:0.0025%, Ti:0.07%, B:0.0030%, and all the other are Fe and inevitable impurity.
The production method of the above-mentioned household electrical appliances deep-draw electrolytic galvanized sheet of resistance to fingerprint, comprises the steps: 1) hot metal pretreatment; 2) converter smelting; 3) vacuum-treat; 4) continuous billet casting; 5) hot continuous rolling; 6) pickling; 7) cold rolling; 8) continuous annealing; 10) polishing; 11) straightening; 12) electro-galvanizing process; 13) resistance to finger prints processing; Wherein, cold rolling pass is 5 times, and cold rolling draft is 73 ~ 88%, and continuous annealing temperature is 830 ~ 870 DEG C, and the continuous annealing time is 15 ~ 80s, and polishing unit elongation is 0.5 ~ 1.5%, and straightening unit elongation is 0.2 ~ 0.5%, and coating weight is 10 ~ 180g/m 2.
Preferably, the thickness of slab of described electrolytic galvanized sheet is 0.4mm ~ 1.6mm.
Preferably, the grain size number of described electrolytic galvanized sheet is 8 ~ 9 grades, yield strength R p0.2be 150 ~ 210MPa, tensile strength Rm be 270 ~ 330MPa, elongation after fracture A 80mmbe 43 ~ 49%, strain-hardening index n 90be 0.18 ~ 0.22, plastic strain ratio r 90be 1.8 ~ 2.3, Erichsen number>=8.5mm.
Preferably, the surface roughness value of electro-galvanizing base material is 0.6 ~ 1.3 μm, PC value >=100/cm.The sticking power of electro-galvanized layer can be improved, thus improve corrosion resistance nature, steel plate punched cracking risk can also be reduced in addition.
The effect of each element and master operation in the present invention:
In the present invention, the content of C is 0.0040 ~ 0.0080%, negative electrode because cementite is ferritic carbon steel relative to matrix, when carbon content increases, add negative electrode quantity and area, correspondingly its corrosion current increases, thus cause its erosion resistance to reduce, its cold working simultaneously (punching press, drawing) and welding property degenerate.Amid all these factors, for ensureing the deep draw performance of electrolytic galvanized sheet, need carry out strict control to C content, in the present invention, carbon content control is 0.0040 ~ 0.0080%.
Content≤0.020% of Si in the present invention.Silicon is a kind of stronger solution strengthening element, adds the intensity that a certain amount of silicon can improve steel, but silicon content higher in base steel is to can pot galvanize have a negative impact.Along with the silicone content in base steel raises, silicon oxidized generation SiO 2content increase thereupon, this by impact follow-up pickling process effect, if when surface of steel plate after pickling still has remaining SiO 2, cause plating adhesion to degenerate.For ensureing high anti-corrosion and the great surface quality of base material, strict control is carried out to Si content, Si content≤0.02%.
In the present invention, the content of Mn is 0.10 ~ 0.23%.Mn energy reinforced ferrite, but also solid solution increases the intensity of electro-galvanizing base material.In addition, add manganese and can prevent when hot-work because sulphur causes the embrittlement of steel in steel, but raise along with the content of electrolytic galvanized sheet Mn, its processing characteristics will decline gradually.Therefore, Mn content is 0.10 ~ 0.23%.
P content≤0.020% in the present invention.For requiring to have for good corrosion resistance and the good electro-galvanizing base material of pressworkability, the content of phosphorus is preferably low as far as possible, because phosphorus easily segregation occurs, and causes corrosion resisting property to reduce.Therefore, P content≤0.020%.
S content≤0.0150% in the present invention.In steel, S is detrimental impurity element, and the content of S is that less solidity to corrosion is better.Therefore, S content≤0.015%.
In the present invention, sol.Al content is 0.020 ~ 0.060%.The adding of Al in steel, can form dissolved aluminum (Als) and Soluble aluminium, and Als comprises solid solution aluminium and AlN, the AlN particle of disperse can stop growing up of austenite crystal, crystal grain thinning.Along with the increase of Als, the amount of inclusions of steel increases, and inclusion size also will become greatly, is deteriorated causing the coating adhesion of electrogalvanizing steel plate, corrosion resisting property and pressworkability.But generating AlN to ensure in steel that N and Al fully combines, and the surface quality of the complete deoxidation of molten steel and continuously cast bloom, Als should ensure >=0.02%.Therefore, solAl content is selected 0.02 ~ 0.06%.
N content≤0.0050% in the present invention.N and C is the same, is also solid solution element.Along with the increase of N content in steel, its pressworkability will be caused to degenerate (as n, r value declines), simultaneously, solid solution N is the major cause causing precoated layer raw sheet finished product timeliness, particularly for the strain aging effect after smooth, the impact of nitrogen is especially large, therefore requires that N is as far as possible low.Concerning structure precoated steel plate, the N content in steel answers≤0.005%.
Ti content 0.04 ~ 0.11% in the present invention.Ti is typical microalloy element.The effect of Ti is crystal grain thinning, while raising hardness of steel, improves the toughness of steel.At high temperature, Ti and N or O generates TiN or Ti 2o 3micropartical, fining austenite grains as the forming core core of pro-eutectoid α-Fe.In addition, Ti and N or C combines and generates stable compound TiC or Ti (CN), and solute constituent element is withdrawn from sosoloid, restrained effectively the generation of " KESHI gas mass ", thus effectively prevents electrolytic galvanized sheet from adding the generation of wrinkle in man-hour.As time too much containing Ti amount, by forming large titanium nitride particle, cause steel to become fragile, thus electrolytic galvanized sheet pressworkability is degenerated, and increasing production cost; As very few containing Ti amount, it is difficult to be completely fixed C, N element in steel, does not have the effect preventing from processing wrinkle.In cold rolling ultra low-carbon steel, it is generally acknowledged that the add-on of Ti should be not less than 0.04%, amid all these factors, determine that in steel, Ti content is 0.04 ~ 0.11%.
B content 0.0020 ~ 0.0045% in the present invention.B can improve the hot ductility of steel, improves cold deformation performance, and in addition, B can strengthen crystal boundary, prevents ultra low-carbon steel secondary processing brittleness.As time too much containing B amount, by forming large boron nitride particle, cause steel to become fragile, thus electrolytic galvanized sheet pressworkability is degenerated, and increasing production cost; As very few containing B amount, do not have the effect improving cold deformation performance.Amid all these factors, determine that in steel, B content is 0.0020 ~ 0.0045%.
The present invention has the following advantages:
First, in the present invention, electrolytic galvanized sheet adopts Ultra-low carbon aluminium killed steel, add trace Ti, B alloy, can ensure that in the present invention, electrolytic galvanized sheet has excellent deep drawability energy, punching place can be made again and be not out of shape Deformation Height compared with plain plate and be no more than 0.1mm, assemble the technical barrier of difficulty after solving current electrolytic galvanized sheet punching, meet the requirement that household appliances enterprise manufactures the various complicated deep-draw distortion such as washing machine shell, liquid crystal display television back and assembling;
The second, the electrolytic galvanized sheet corrosion resisting property prepared by the inventive method is excellent and have certain punching press oilness, adapts to various punching press, application and assembly technology.
Accompanying drawing explanation
Fig. 1 is the metallographic structure figure of the household electrical appliances deep-draw electrolytic galvanized sheet of resistance to fingerprint of the present invention;
Embodiment
Below by specific embodiment, the present invention is further illustrated:
Embodiment 1:
The weight percentage of chemical composition of the present invention is: C:0.0080%, Si:0.010%, Mn:0.10%, P:0.015%, S:0.0080%, sol.Al:0.020%, N:0.0023%, Ti:0.11%, B:0.0020%, all the other are Fe and inevitable impurity.The household electrical appliances deep-draw electrolytic galvanized sheet of resistance to fingerprint is obtained by molten iron-steelmaking, vacuum-treat, continuous casting, hot rolling, pickling, cold rolling, continuous annealing, polishing, straightening, electro-galvanizing, resistance to finger prints processing; Wherein, continuous annealing temperature is 870 DEG C, continuous annealing time 80s, and polishing unit elongation is 1.5%, and straightening unit elongation is 0.3%; The surface roughness value of electro-galvanizing base material is 1.3 μm, and PC value is 110/cm; The thickness of slab of electrolytic galvanized sheet is 1.5mm, yield strength R p0.2for 150MPa, tensile strength R mfor 280MPa, elongation after fracture A 80mmbe 48%, strain-hardening index n 90be 0.18, plastic strain ratio r 90be 1.9, Erichsen number is 8.9mm, and the electrolytic galvanized sheet of resistance to fingerprint 96 hours salt-fog test white rust corrosion areas 1%, electrolytic galvanized sheet two sides electrolytic coating, electrolytic coating weight is 30g/m 2.Strain-hardening index n 90be 0.18 ~ 0.22, plastic strain ratio r 90be 1.8 ~ 2.3.
Embodiment 2:
The weight percentage of chemical composition of the present invention is: C:0.0040%, Si:0.010%, Mn:0.15%, P:0.020%, S:0.0070%, sol.Al:0.040%, N:0.0028%, Ti:0.06%, B:0.0028%, all the other are Fe and inevitable impurity.The household electrical appliances deep-draw electrolytic galvanized sheet of resistance to fingerprint is obtained by molten iron-steelmaking, vacuum-treat, continuous casting, hot rolling, pickling, cold rolling, continuous annealing, polishing, straightening, electro-galvanizing, resistance to finger prints processing; Wherein, continuous annealing temperature is 850 DEG C, continuous annealing time 60s, and polishing unit elongation is 1.2%, and straightening unit elongation is 0.2%; The surface roughness value of electro-galvanizing base material is 1.0 μm, and PC value is 100/cm; The thickness of slab of electrolytic galvanized sheet is 1.0mm, yield strength R p0.2for 170MPa, tensile strength R mfor 310MPa, elongation after fracture A 80mmbe 46%, strain-hardening index n 90be 0.21, plastic strain ratio r 90be 2.1, Erichsen number is 8.8mm, and the electrolytic galvanized sheet of resistance to fingerprint 96 hours salt-fog test white rust corrosion areas 1.5%, electrolytic galvanized sheet two sides electrolytic coating, electrolytic coating weight is 40g/m 2.
Embodiment 3:
The weight percentage of chemical composition of the present invention is: C:0.0045%, Si:0.005%, Mn:0.17%, P:0.010%, S:0.0050%, sol.Al:0.060%, N:0.0015%, Ti:0.04%, B:0.0035%, all the other are Fe and inevitable impurity.The household electrical appliances deep-draw electrolytic galvanized sheet of resistance to fingerprint is obtained by molten iron-steelmaking, vacuum-treat, continuous casting, hot rolling, pickling, cold rolling, continuous annealing, polishing, straightening, electro-galvanizing, resistance to finger prints processing; Wherein, continuous annealing temperature is 830 DEG C, continuous annealing time 15s, and polishing unit elongation is 0.8%, and straightening unit elongation is 0.5%; The surface roughness value of electro-galvanizing base material is 0.8 μm, and PC value is 112/cm; The thickness of slab of electrolytic galvanized sheet is 0.4mm, yield strength R p0.2for 210MPa; Tensile strength R mfor 330MPa, elongation after fracture A 80mmbe 43%, strain-hardening index n 90be 0.19, plastic strain ratio r 90be 1.8, Erichsen number is 8.5mm, and the electrolytic galvanized sheet of resistance to fingerprint 96 hours salt-fog test white rust corrosion areas 1.2%, electrolytic galvanized sheet two sides electrolytic coating, electrolytic coating weight is 38g/m 2.
Embodiment 4:
The weight percentage of chemical composition of the present invention is: C:0.0055%, Si:0.015%, Mn:0.23%, P:0.013%, S:0.0095%, sol.Al:0.050%, N:0.0035%, Ti:0.09%, B:0.0045%, all the other are Fe and inevitable impurity.The household electrical appliances deep-draw electrolytic galvanized sheet of resistance to fingerprint is obtained by molten iron-steelmaking, vacuum-treat, continuous casting, hot rolling, pickling, cold rolling, continuous annealing, polishing, straightening, electro-galvanizing, resistance to finger prints processing; Wherein, continuous annealing temperature is 840 DEG C, continuous annealing time 30s, and polishing unit elongation is 0.6%, and straightening unit elongation is 0.4%; The surface roughness value of electro-galvanizing base material is 0.6 μm, and PC value is 115/cm; The thickness of slab of electrolytic galvanized sheet is 0.6mm, yield strength R p0.2for 169MPa, tensile strength R mfor 312MPa, elongation after fracture A 80mmbe 47%, strain-hardening index n 90be 0.20, plastic strain ratio r 90be 2.0, Erichsen number is 8.6mm, and the electrolytic galvanized sheet of resistance to fingerprint 96 hours salt-fog test white rust corrosion areas 2.5%, electrolytic galvanized sheet two sides electrolytic coating, electrolytic coating weight is 50g/m 2.
Embodiment 5:
The weight percentage of chemical composition of the present invention is: C:0.0060%, Si:0.011%, Mn:0.19%, P:0.012%, S:0.0110%, sol.Al:0.035%, N:0.0025%, Ti:0.08%, B:0.0023%, all the other are Fe and inevitable impurity.The household electrical appliances deep-draw electrolytic galvanized sheet of resistance to fingerprint is obtained by molten iron-steelmaking, vacuum-treat, continuous casting, hot rolling, pickling, cold rolling, continuous annealing, polishing, straightening, electro-galvanizing, resistance to finger prints processing; Wherein, continuous annealing temperature is 860 DEG C, continuous annealing time 40s, and polishing unit elongation is 0.9%, and straightening unit elongation is 0.3%; The surface roughness value of electro-galvanizing base material is 0.7 μm, and PC value is 105/cm; The thickness of slab of electrolytic galvanized sheet is 0.7mm, yield strength R p0.2for 190MPa, tensile strength R mfor 305MPa, elongation after fracture A 80mmbe 48%, strain-hardening index n 90be 0.22, plastic strain ratio r 90be 2.3, Erichsen number is 9.0mm, and the electrolytic galvanized sheet of resistance to fingerprint 96 hours salt-fog test white rust corrosion areas 0.5%, electrolytic galvanized sheet two sides electrolytic coating, electrolytic coating weight is 45g/m 2.
Table 1 is the existing common electrolytic galvanized sheet of resistance to fingerprint and the household electrical appliances deep-draw electrolytic galvanized sheet of resistance to fingerprint the performance test results (mean value) contrast table of the present invention:
Visible by table 1 data, the household electrical appliances deep-draw electrolytic galvanized sheet of resistance to fingerprint of the present invention is compared with the common electrolytic galvanized sheet of resistance to fingerprint, the mean value of electrolytic galvanized sheet punching place Deformation Height of the present invention (with not being out of shape compared with plain plate) is 0.05mm, the mean value of the common electrolytic galvanized sheet of resistance to fingerprint punching place Deformation Height (with not being out of shape compared with plain plate) is 0.255mm, electrolytic galvanized sheet punching place of the present invention is out of shape and is improved compared with Common platings zine plate, and punch process improves;
In addition, electrolytic galvanized sheet of the present invention is 1.5% through the mean value of 96 hours its white rust corrosion areas of salt-fog test, the common electrolytic galvanized sheet of resistance to fingerprint is 8.0% through the mean value of 96 hours its white rust corrosion areas of salt-fog test, the corrosion resistance nature of electrolytic galvanized sheet of the present invention is improved compared with Common platings zine plate, and corrosion resistance coating is more excellent.
As can be seen from Figure 1, by Chemical Composition, hot rolling, cold rolled continuous annealing technology controlling and process, the grain size number of the electro-galvanizing base material obtained is 8 ~ 9 grades, and metallographic structure is ferrite.
The household electrical appliances deep-draw electrolytic galvanized sheet of resistance to fingerprint of the present invention can ensure that electrolytic galvanized sheet of the present invention has excellent deep drawability energy, punching place Deformation Height (with not being out of shape compared with plain plate) can be made again to be no more than 0.1mm, assemble the technical barrier of difficulty after solving current electrolytic galvanized sheet punching, meet the requirement that household appliances enterprise manufactures the various complicated deep-draw distortion such as laundry face shell, liquid crystal display television back and assembling.

Claims (7)

1. the household electrical appliances deep-draw electrolytic galvanized sheet of resistance to fingerprint, it is characterized in that: the weight percentage of described electrolytic galvanized sheet chemical composition is: C:0.0040 ~ 0.0080%, Si≤0.020%, Mn:0.10 ~ 0.23%, P≤0.020%, S≤0.0150%, sol.Al:0.020 ~ 0.060%, N≤0.0050%, Ti:0.04 ~ 0.11%, B:0.0020 ~ 0.0045%, all the other are Fe and inevitable impurity.
2. the household electrical appliances deep-draw electrolytic galvanized sheet of resistance to fingerprint according to claim 1, it is characterized in that: the weight percentage of described electrolytic galvanized sheet chemical composition is: C:0.0050 ~ 0.0065%, Si≤0.020%, Mn:0.15 ~ 0.20%, P≤0.015%, S≤0.0150%, sol.Al:0.020 ~ 0.040%, N≤0.0040%, Ti:0.05 ~ 0.10%, B:0.0020 ~ 0.0040%, all the other are Fe and inevitable impurity.
3. the household electrical appliances deep-draw electrolytic galvanized sheet of resistance to fingerprint according to claim 1, it is characterized in that: the weight percentage of described electrolytic galvanized sheet chemical composition is: C:0.0060%, Si:0.011%, Mn:0.16%, P:0.012%, S:0.0110%, sol.Al:0.030%, N:0.0025%, Ti:0.07%, B:0.0030%, all the other are Fe and inevitable impurity.
4. the household electrical appliances deep-draw electrolytic galvanized sheet of resistance to fingerprint according to claim 1, is characterized in that: the thickness of slab of described electrolytic galvanized sheet is 0.4mm ~ 1.6mm.
5. the household electrical appliances deep-draw electrolytic galvanized sheet of resistance to fingerprint according to claim 1, is characterized in that: the yield strength R of described electrolytic galvanized sheet p0.2be 150 ~ 210MPa, tensile strength R mbe 270 ~ 330MPa, elongation after fracture A 80mmbe 43 ~ 49%, strain-hardening index n 90be 0.18 ~ 0.22, plastic strain ratio r 90be 1.8 ~ 2.3, Erichsen number>=8.5mm.
6. a production method for the household electrical appliances deep-draw electrolytic galvanized sheet of resistance to fingerprint according to claim 1, its feature exists: the method comprises the steps: 1) hot metal pretreatment; 2) converter smelting; 3) vacuum-treat; 4) continuous billet casting; 5) hot continuous rolling; 6) pickling; 7) cold rolling; 8) continuous annealing; 10) polishing; 11) straightening; 12) electro-galvanizing process; 13) resistance to finger prints processing; Wherein, cold rolling pass is 5 times, and cold rolling draft is 73 ~ 88%, and continuous annealing temperature is 830 ~ 870 DEG C, and the continuous annealing time is 15 ~ 80s, and polishing unit elongation is 0.5 ~ 1.5%, and straightening unit elongation is 0.2 ~ 0.5%, and coating weight is 10 ~ 180g/m 2.
7. the production method of the household electrical appliances deep-draw electrolytic galvanized sheet of resistance to fingerprint according to claim 6, is characterized in that: the grain size number of electro-galvanizing base material is 8 ~ 9 grades, and surface roughness value is 0.6 ~ 1.3 μm, PC value >=100/cm.
CN201510881410.6A 2015-12-03 2015-12-03 Deep-drawing fingerprint-resistant electro-galvanized plate for household appliance, and preparation method thereof Pending CN105483547A (en)

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CN110117758A (en) * 2019-05-31 2019-08-13 张家港扬子江冷轧板有限公司 Meter case part of low-temperature impact-resistant and preparation method thereof
CN110218936A (en) * 2019-06-03 2019-09-10 武汉钢铁有限公司 A kind of boracic Ultra-low carbon tin plate and production method
CN110343959A (en) * 2019-07-25 2019-10-18 首钢集团有限公司 A kind of ultra-deep rushes hot-galvanized steel and preparation method thereof
CN111118405A (en) * 2020-03-02 2020-05-08 马鞍山钢铁股份有限公司 Hot-dip galvanized sheet suitable for gas meter housing in low-temperature environment and production method thereof
CN111527232A (en) * 2017-12-26 2020-08-11 Posco公司 Zinc alloy-plated steel material having excellent post-processing corrosion resistance and method for producing same
CN113355710A (en) * 2021-06-08 2021-09-07 武汉钢铁有限公司 Hard-coating electro-galvanizing fingerprint-resistant coating plate for large-deformation stamping household appliance outer plate and manufacturing method thereof
CN115505832A (en) * 2021-06-07 2022-12-23 上海梅山钢铁股份有限公司 Hot-dip aluminum-zinc steel plate for liquid crystal backboard with yield strength of 340MPa

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CN107739993A (en) * 2017-10-17 2018-02-27 武汉钢铁有限公司 The zinc-plated Aldecor plate HC340LA+ZE of automobile electrical production method
CN107739993B (en) * 2017-10-17 2019-07-09 武汉钢铁有限公司 The production method of the zinc-plated Aldecor plate HC340LA+ZE of automobile electrical
CN111527232A (en) * 2017-12-26 2020-08-11 Posco公司 Zinc alloy-plated steel material having excellent post-processing corrosion resistance and method for producing same
US11566314B2 (en) 2017-12-26 2023-01-31 Posco Co., Ltd Zinc alloy plated steel material having excellent corrosion resistance after being processed
CN110117758A (en) * 2019-05-31 2019-08-13 张家港扬子江冷轧板有限公司 Meter case part of low-temperature impact-resistant and preparation method thereof
CN110117758B (en) * 2019-05-31 2021-05-04 张家港扬子江冷轧板有限公司 Low-temperature impact resistant instrument shell part and preparation method thereof
CN110218936A (en) * 2019-06-03 2019-09-10 武汉钢铁有限公司 A kind of boracic Ultra-low carbon tin plate and production method
CN110343959A (en) * 2019-07-25 2019-10-18 首钢集团有限公司 A kind of ultra-deep rushes hot-galvanized steel and preparation method thereof
CN111118405A (en) * 2020-03-02 2020-05-08 马鞍山钢铁股份有限公司 Hot-dip galvanized sheet suitable for gas meter housing in low-temperature environment and production method thereof
CN115505832A (en) * 2021-06-07 2022-12-23 上海梅山钢铁股份有限公司 Hot-dip aluminum-zinc steel plate for liquid crystal backboard with yield strength of 340MPa
CN115505832B (en) * 2021-06-07 2023-09-05 上海梅山钢铁股份有限公司 Hot-dip aluminum zinc-plated steel plate with yield strength of 340MPa for liquid crystal backboard
CN113355710A (en) * 2021-06-08 2021-09-07 武汉钢铁有限公司 Hard-coating electro-galvanizing fingerprint-resistant coating plate for large-deformation stamping household appliance outer plate and manufacturing method thereof

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