CN102876971A - Method for manufacturing nickel-chromium plating steel band for battery steel shell - Google Patents
Method for manufacturing nickel-chromium plating steel band for battery steel shell Download PDFInfo
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Abstract
The invention discloses a method for manufacturing a nickel-chromium plating steel band for a battery steel shell. According to the method, ingredients of low-carbon steel are adjusted, proper amount of alloy elements of Ti, Ni, Nb and the like is added, and the content of N and O is controlled to improve surface states; parameters of a cold milling process and an annealing process are adjusted aiming at the adjusted ingredients of the steel; a chromium coating is used as a diffusion impervious layer, so that the diffusion of iron can be blocked effectively; and an anticorrosive coating which contains 20 to 30 percent of chromium and has a quasi-stainless steel structure is formed in the diffusion layer, so that the anticorrosive performance is enhanced doubly. Aiming at double-layer plating design concept of nickel-chromium plating, the ingredients of a nickel plating solution and a chromium plating solution and a plating process are adjusted, so that the coating has the characteristics of bright surfaces, low porosity and high mechanical performance.
Description
Technical field
The present invention relates to the ferrous materials processing technique field, particularly a kind of battery steel shell preparation method of nickel plating chromium plating steel belt.
Background technology
The box hat production technique of existing secondary cell and alkaline primary battery is with plate one deck nickel coating after the mild-carbon steel strip moulding with rolling again.The reasons such as Cleaning Process difficulty, the dark scarce capacity of plating and plating point discharge owing to rolling nickel plating, present this technique is replaced by another kind of technique gradually, this technique is after the continuous nickel plating of mild-carbon steel strip, diffuse to form nickel/iron diffusion layer by continuous annealing, and effectively control thickness of diffusion layer, control the exposure of the iron on nickel plating surface.
US Patent No. 5679181 discloses a kind of production technique of corrosion resistance nickel coated steel strips, and this technique makes nickel coating partly or entirely become iron/nickel diffusion layer at least one side nickel plating of cold-rolled steel strip, and the exposure of nickel layer Surface Fe accounts for 4%～30%.
European patent EP 1111697 discloses a kind of for battery case or the production technique of surface-treated steel strips and steel band and the battery of same structure is arranged, this technique is in rare gas element or except thermal treatment 4～10h in the oxygen atmosphere, at border formation iron/nickel and nickel/bismuth diffusion layer separately at 300～650 ℃.The housing of battery adopts the steel band production that has in iron/nickel diffusion layer, nickel dam, nickel/bismuth diffusion layer, the iron/nickel/bismuth alloy layer at least 1 layer.The battery case of this surface treated steel band production has excellent alkali resistance and keeps for a long time the characteristic of enough discharge levels.
US Patent No. 4910096 discloses a kind of nickel-plated cold-rolled band of deep diffusion, and this steel band is the nickel dam at cold-rolled steel strip substrates 1～6 μ m, plates the cobalt layer of 0.01～1.0 μ m thereon again, and thermal treatment forms the deep diffusion layer under 580～710 ℃ of temperature.The preparation method of this steel band has the characteristics such as economy, plasticity-is strong, the coating diffusion is dark, solidity to corrosion is good.
US Patent No. 5587248 discloses a kind of solidity to corrosion nickel plated steel strip and production technique thereof, and this technique is at least one side nickel plating of cold-rolled steel strip, and makes nickel coating partly or entirely form iron/nickel diffusion layer, and the exposure of nickel coating Surface Fe is not more than 30%.
US Patent No. 5335841 discloses a kind of production technique with excellent corrosion resistance internal surface welded tube, this technique applies double-deck tungsten coating in the one side of steel band at least, the first layer is nickel or brill or its alloy, and the second layer uses the metal or alloy that relative first layer metal fusing point will be low.Steel band is processed into the pipe postheat treatment makes welded tube not have exposed steel matrix.This welded tube has excellent solidity to corrosion and practicality.
Japanese Patent JP3104855 discloses a kind of DIFFUSION TREATMENT nickel steel band and production technique, and this technique is at the diffusion layer of the two-sided formation nickel of steel band, and the diffusion layer nickel of a nickel is controlled at 2～10g/m
2Scope in, the diffusion layer nickel of another side nickel is 2g/m
2At the two-layer substrates nickel dam of nickel diffusion layer, correspondingly control one side is at 2～10g/m again
2Scope in, another side is 2g/m
2The heating upper surface makes nickel ooze the people to form diffusion layer, in addition on this basis can also be in two-sided continuation nickel plating, thus be easy to make upper and lower surface to form the nickel diffusion layer of different mass.This technique can satisfy the difference that the surfaces externally and internally corrosion resisting property requires.
Chinese patent CN1600904A discloses a kind of nickel-plated deeply-draw steel strip and production method thereof, continuous electro-deposition nickel 1～2 μ m nickel on steel band, and by thermal treatment and laser thermal shock processing, make nickel coating form iron/nickel diffusion layer, and then control dew iron rate makes the anticorrosion steel band of desired size by finishing procedure in 3%.This steel band has excellent solidity to corrosion and practicality.
Although present many research work have obtained certain progress to nickel plating technology, annealing process, pulse laser impact process, improving in varying degrees nickel coating performance and corrosion resistance nature.But existing technique mainly is the galvanic deposit that concentrates on the nickel flash plating, and is easy of cover light exposes matrix in some processes processes such as degree of depth roll compacting, deep-draw like this; And because the interfacial stress of thick coating and matrix is excessive or because thermal treatment process is inappropriate, coating shedding, skin effect phenomenon appear in thick coating easily.The diffusion layer of existing nickel-clad steel band mainly is Fe-Ni or Fe-Ni-C diffusion layer, and it is higher to reveal the iron rate, reduce easily antiseptic property, and thermal treatment process is improper, is forming at the interface phase boundary easily, and this is extremely harmful for the engineering materials interface mechanical characteristic.In addition, can not form preferably matching relationship aspect unit elongation, tensile strength, the hardness.The deficiency of these nickel-clad steel bands is so that it is not suitable for the applying working condition of battery steel shell.
Summary of the invention
For the deficiencies in the prior art, one of purpose of the present invention is to provide the preparation method of a kind of battery steel shell with the nickel plating chromium plating steel belt.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of battery steel shell is characterized in that with the preparation method of nickel plating chromium plating steel belt the chemical ingredients of described steel band is comprised of following component by weight percentage: C:0.15-0.20%, Si:0.2-0.4%, Mn:0.5-0.7%, Als:0.01-0.02%, Ti:0.05-0.08%, P :≤0.03%, S :≤0.01%, Ni:0.3-0.5%, Nb:0.7-0.9%, N :≤0.015%, O :≤0.006%, all the other are Fe and inevitable impurity, and described preparation method comprises the steps:
(2) according to mentioned component smelt, continuous casting, reconditioning, hot rolling, be prepared into hot-rolled steel sheet,
(2) annealing: annealing temperature is 770-790 ℃, adopts the dilute hydrochloric acid pickling after the annealing;
(3) cold rolling: adopt multi-pass cold rolling, every time cold rolling draft is 20-30%, anneals in the centre, and temperature is 770-790 ℃, is cold-rolled to finished product thickness; Then anneal, annealing temperature is 770-790 ℃, and annealing time is 3-5 hour, then carries out pickling;
(4) cold-reduced sheet after the pickling is placed in the solution tank, electrodeposited chromium layers, the gauge control of chromium layer is at 1.5-2.5 μ m; The solution composition of wherein said electrodeposited chromium layers is anhydrous chromic acid acid anhydride 600-620g/L, hydrochloric acid 20-25ml/L, and surplus is water, cathode current density 20-32A/dm
2, bath temperature 47-48 ℃, immersion plating time 3-5min;
(5) mild-carbon steel strip after the chromium plating is placed in the solution tank, electroless nickel layer on the mild-carbon steel strip after the chromium plating, the gauge control of nickel dam is at 6-8 μ m; The solution composition nickel sulfamic acid 560-600g/L of described electroless nickel layer, nickelous chloride 12-14g/L, boric acid 35-45g/L, surplus is water, pH 3.5-4.5, bath temperature 45-55 ℃, cathode current density 4-7A/dm
2, immersion plating time 6～8min;
(6) mild-carbon steel strip behind the nickel layer is placed in the solution tank, carry out Passivation Treatment;
(7) then the chromium plating nickel dam steel band after the Passivation Treatment being spread hydrogen annealing processes.
The present invention has following beneficial effect:
(1) for realizing preferably plating effect, the present invention adjusts the composition of soft steel, has added the alloying elements such as an amount of Ti, Ni and Nb, and control N, and the content of O is to improve condition of surface.
(2) for the composition of the steel of adjusting, adjusted the parameter of cold-rolling process and annealing process.
(3) by adding chromiumcoating as diffusion impervious layer, can effectively stop the diffusion of iron, and owing to formed the preservative coat of the class stainless steel structure of chromium content 20%～30% in the diffusion layer, increase doubly antiseptic property.
(4) duplex plating for chromium plating and nickel plating covers the meter thinking, has adjusted the solution composition of chromium plating and nickel plating, and plating technic so that coating also has surface-brightening, than low porosity, than the feature of high-mechanical property.
Embodiment
Embodiment one
A kind of battery steel shell preparation method of nickel plating chromium plating steel belt, the chemical ingredients of described steel band is comprised of following component by weight percentage: C:0.15%, Si:0.4%, Mn:0.5%, Als:0.02%, Ti:0.05%, P :≤0.03%, S :≤0.01%, Ni:0.5%, Nb:0.7%, N :≤0.015%, O :≤0.006%, all the other are Fe and inevitable impurity, described preparation method comprises the steps:
(3) according to mentioned component smelt, continuous casting, reconditioning, hot rolling, be prepared into hot-rolled steel sheet,
(2) annealing: annealing temperature is 770 ℃, adopts the dilute hydrochloric acid pickling after the annealing;
(3) cold rolling: adopt multi-pass cold rolling, every time cold rolling draft is 20%, anneals in the centre, and temperature is 770 ℃, is cold-rolled to finished product thickness; Then anneal, annealing temperature is 770-℃, and annealing time is 5 hours, then carries out pickling;
(4) cold-reduced sheet after the pickling is placed in the solution tank, electrodeposited chromium layers, the gauge control of chromium layer is at 1.5 μ m; The solution composition of wherein said electrodeposited chromium layers is anhydrous chromic acid acid anhydride 620g/L, hydrochloric acid 20ml/L, and surplus is water, cathode current density 32A/dm
2, 47 ℃ of bath temperatures, immersion plating time 5min.
(5) mild-carbon steel strip after the chromium plating is placed in the solution tank, electroless nickel layer on the mild-carbon steel strip after the chromium plating, the gauge control of nickel dam is at 6 μ m; The solution composition nickel sulfamic acid 600g/L of described electroless nickel layer, nickelous chloride 12g/L, boric acid 45g/L, surplus is water, pH 3.5,55 ℃ of bath temperatures, cathode current density 4A/dm
2, immersion plating time 8min.
(6) mild-carbon steel strip behind the nickel layer is placed in the solution tank, carry out Passivation Treatment;
(7) then the chromium plating nickel dam steel band after the Passivation Treatment being spread hydrogen annealing processes.
Embodiment two
A kind of battery steel shell preparation method of nickel plating chromium plating steel belt, the chemical ingredients of described steel band is comprised of following component by weight percentage: C:0.20%, Si:0.2%, Mn:0.7%, Als:0.01%, Ti:0.08%, P :≤0.03%, S :≤0.01%, Ni:0.3%, Nb:0.9%, N :≤0.015%, O :≤0.006%, all the other are Fe and inevitable impurity, described preparation method comprises the steps:
(4) according to mentioned component smelt, continuous casting, reconditioning, hot rolling, be prepared into hot-rolled steel sheet,
(2) annealing: annealing temperature is 790 ℃, adopts the dilute hydrochloric acid pickling after the annealing;
(3) cold rolling: adopt multi-pass cold rolling, every time cold rolling draft is 30%, anneals in the centre, and temperature is 790 ℃, is cold-rolled to finished product thickness; Then anneal, annealing temperature is 790 ℃, and annealing time is 5 hours, then carries out pickling;
(4) cold-reduced sheet after the pickling is placed in the solution tank, electrodeposited chromium layers, the gauge control of chromium layer is at 2.5 μ m; The solution composition of wherein said electrodeposited chromium layers is anhydrous chromic acid acid anhydride 600g/L, hydrochloric acid 25ml/L, and surplus is water, cathode current density 20A/dm
2, 48 ℃ of bath temperatures, immersion plating time 3min.
(5) mild-carbon steel strip after the chromium plating is placed in the solution tank, electroless nickel layer on the mild-carbon steel strip after the chromium plating, the gauge control of nickel dam is at 8 μ m; The solution composition nickel sulfamic acid 560g/L of described electroless nickel layer, nickelous chloride 14g/L, boric acid 35g/L, surplus is water, pH 4.5,45 ℃ of bath temperatures, cathode current density 7A/dm
2, immersion plating time 6min.
(6) mild-carbon steel strip behind the nickel layer is placed in the solution tank, carry out Passivation Treatment;
(7) then the chromium plating nickel dam steel band after the Passivation Treatment being spread hydrogen annealing processes.
Embodiment three
A kind of battery steel shell preparation method of nickel plating chromium plating steel belt, the chemical ingredients of described steel band is comprised of following component by weight percentage: C:0.18%, Si:0.3%, Mn:0.6%, Als:0.015%, Ti:0.065%, P :≤0.03%, S :≤0.01%, Ni:0.4%, Nb:0.8%, N :≤0.015%, O :≤0.006%, all the other are Fe and inevitable impurity, described preparation method comprises the steps:
(5) according to mentioned component smelt, continuous casting, reconditioning, hot rolling, be prepared into hot-rolled steel sheet,
(2) annealing: annealing temperature is 780 ℃, adopts the dilute hydrochloric acid pickling after the annealing;
(3) cold rolling: adopt multi-pass cold rolling, every time cold rolling draft is 25%, anneals in the centre, and temperature is 780 ℃, is cold-rolled to finished product thickness; Then anneal, annealing temperature is 780 ℃, and annealing time is 4 hours, then carries out pickling;
(4) cold-reduced sheet after the pickling is placed in the solution tank, electrodeposited chromium layers, the gauge control of chromium layer is at 2 μ m;
The solution composition of wherein said electrodeposited chromium layers is anhydrous chromic acid acid anhydride 610g/L, hydrochloric acid 22ml/L, and surplus is water, cathode current density 26A/dm
2, 48 ℃ of bath temperatures, immersion plating time 4min.
(5) mild-carbon steel strip after the chromium plating is placed in the solution tank, electroless nickel layer on the mild-carbon steel strip after the chromium plating, the gauge control of nickel dam is at 7 μ m; The solution composition nickel sulfamic acid 580g/L of described electroless nickel layer, nickelous chloride 13g/L, boric acid 40g/L, surplus is water, pH 4.0,50 ℃ of bath temperatures, cathode current density 6A/dm
2, immersion plating time 7min.
(6) mild-carbon steel strip behind the nickel layer is placed in the solution tank, carry out Passivation Treatment;
(7) then the chromium plating nickel dam steel band after the Passivation Treatment being spread hydrogen annealing processes.
Applicant's statement, the present invention illustrates detailed process equipment and process flow process of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned detailed process equipment and process flow process, does not mean that namely the present invention must rely on above-mentioned detailed process equipment and process flow process and could implement.The person of ordinary skill in the field should understand, any improvement in the present invention to the interpolation of the equivalence replacement of each raw material of product of the present invention and ancillary component, the selection of concrete mode etc., all drops within protection scope of the present invention and the open scope.
Claims (1)
1. the preparation method of a battery steel shell usefulness nickel plating chromium plating steel belt is characterized in that the chemical ingredients of described steel band is comprised of following component by weight percentage: C:0.15-0.20%, Si:0.2-0.4%, Mn:0.5-0.7%, Al s:0.01-0.02%, Ti:0.05-0.08%, P :≤0.03%, S :≤0.01%, Ni:0.3-0.5%, Nb:0.7-0.9%, N :≤0.015%, O :≤0.006%, all the other are Fe and inevitable impurity, and described preparation method comprises the steps:
(1) according to mentioned component smelt, continuous casting, reconditioning, hot rolling, be prepared into hot-rolled steel sheet,
(2) annealing: annealing temperature is 770-790 ℃, adopts the dilute hydrochloric acid pickling after the annealing;
(3) cold rolling: adopt multi-pass cold rolling, every time cold rolling draft is 20-30%, anneals in the centre, and temperature is 770-790 ℃, is cold-rolled to finished product thickness; Then anneal, annealing temperature is 770-790 ℃, and annealing time is 3-5 hour, then carries out pickling;
(4) cold-reduced sheet after the pickling is placed in the solution tank, electrodeposited chromium layers, the gauge control of chromium layer is at 1.5-2.5 μ m; The solution composition of wherein said electrodeposited chromium layers is anhydrous chromic acid acid anhydride 600-620g/L, hydrochloric acid 20-25ml/L, and surplus is water, cathode current density 20-32A/dm
2, bath temperature 47-48 ℃, immersion plating time 3-5min;
(5) mild-carbon steel strip after the chromium plating is placed in the solution tank, electroless nickel layer on the mild-carbon steel strip after the chromium plating, the gauge control of nickel dam is at 6-8 μ m; The solution composition nickel sulfamic acid 560-600g/L of described electroless nickel layer, nickelous chloride 12-14g/L, boric acid 35-45g/L, surplus is water, pH 3.5-4.5, bath temperature 45-55 ℃, cathode current density 4-7A/dm
2, immersion plating time 6～8min;
(6) mild-carbon steel strip behind the nickel layer is placed in the solution tank, carry out Passivation Treatment;
(7) then the chromium plating nickel dam steel band after the Passivation Treatment being spread hydrogen annealing processes.
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| CN105177651A (en) * | 2015-10-27 | 2015-12-23 | 姜少群 | Nickel-plating method of steel shell |
| CN105177641A (en) * | 2015-10-27 | 2015-12-23 | 姜少群 | Nickel-plated steel shell |
| CN104818508B (en) * | 2015-03-31 | 2017-05-03 | 江苏九天光电科技有限公司 | Precision nickel composite steel strip preparation method |
| CN107354495A (en) * | 2017-07-25 | 2017-11-17 | 无锡市力达金属制品有限公司 | A kind of battery steel band and preparation method thereof |
| CN108198960A (en) * | 2017-12-29 | 2018-06-22 | 东莞市朗泰通实业有限公司 | A kind of anti-oxidant Ni-MH battery and preparation method thereof |
| CN110541123A (en) * | 2019-09-05 | 2019-12-06 | 首钢集团有限公司 | cold-rolled strip steel for battery case and preparation method thereof |
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| CN111575756A (en) * | 2020-05-11 | 2020-08-25 | 常德力元新材料有限责任公司 | Electroplating process of nickel-plated steel strip for battery |
| CN114540604A (en) * | 2022-02-23 | 2022-05-27 | 江苏东方九天新能源材料有限公司 | Nickel-plated steel strip for battery container and preparation method thereof |
| CN115786913A (en) * | 2023-02-06 | 2023-03-14 | 江苏东方九天新能源材料有限公司 | Battery steel shell with metal layer plated on surface and processing technology thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104818508B (en) * | 2015-03-31 | 2017-05-03 | 江苏九天光电科技有限公司 | Precision nickel composite steel strip preparation method |
| CN105177641A (en) * | 2015-10-27 | 2015-12-23 | 姜少群 | Nickel-plated steel shell |
| CN105177651A (en) * | 2015-10-27 | 2015-12-23 | 姜少群 | Nickel-plating method of steel shell |
| CN107354495B (en) * | 2017-07-25 | 2019-05-31 | 无锡市力达金属制品有限公司 | A kind of battery steel band and preparation method thereof |
| CN107354495A (en) * | 2017-07-25 | 2017-11-17 | 无锡市力达金属制品有限公司 | A kind of battery steel band and preparation method thereof |
| CN108198960B (en) * | 2017-12-29 | 2021-02-09 | 东莞市朗泰通实业有限公司 | Anti-oxidation nickel-metal hydride battery and manufacturing method thereof |
| CN108198960A (en) * | 2017-12-29 | 2018-06-22 | 东莞市朗泰通实业有限公司 | A kind of anti-oxidant Ni-MH battery and preparation method thereof |
| CN110541123A (en) * | 2019-09-05 | 2019-12-06 | 首钢集团有限公司 | cold-rolled strip steel for battery case and preparation method thereof |
| CN111293246A (en) * | 2020-02-21 | 2020-06-16 | 苏州宝优际科技股份有限公司 | Production method of new energy automobile power battery shell based on thermal forming process |
| CN111293246B (en) * | 2020-02-21 | 2022-05-20 | 苏州宝优际科技股份有限公司 | Production method of new energy automobile power battery shell based on thermal forming process |
| CN111575756A (en) * | 2020-05-11 | 2020-08-25 | 常德力元新材料有限责任公司 | Electroplating process of nickel-plated steel strip for battery |
| CN114540604A (en) * | 2022-02-23 | 2022-05-27 | 江苏东方九天新能源材料有限公司 | Nickel-plated steel strip for battery container and preparation method thereof |
| CN115786913A (en) * | 2023-02-06 | 2023-03-14 | 江苏东方九天新能源材料有限公司 | Battery steel shell with metal layer plated on surface and processing technology thereof |
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Application publication date: 20130116 |