CN106757244A - A kind of preparation method of high-flexibility nickel plated steel strip - Google Patents
A kind of preparation method of high-flexibility nickel plated steel strip Download PDFInfo
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- CN106757244A CN106757244A CN201510820165.8A CN201510820165A CN106757244A CN 106757244 A CN106757244 A CN 106757244A CN 201510820165 A CN201510820165 A CN 201510820165A CN 106757244 A CN106757244 A CN 106757244A
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- steel strip
- nickel
- plated steel
- preparation
- flexibility
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
- C25D5/50—After-treatment of electroplated surfaces by heat-treatment
- C25D5/505—After-treatment of electroplated surfaces by heat-treatment of electroplated tin coatings, e.g. by melting
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/06—Wires; Strips; Foils
- C25D7/0614—Strips or foils
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
The invention provides a kind of preparation method of high-flexibility nickel plated steel strip, 5~10 μ m-thick nickel coatings are first deposited on porous steel strip base material, carry out low temperature de-stress treatment to steel band afterwards, last porous nickel-clad steel band is placed in and high temperature Crystallizing treatment is carried out in heat-treatment furnace.Using the nickel-coated porous steel strip prepared by this technique, because have passed through low temperature de-stress operation before Crystallizing treatment, so as to effectively lift perforated steel ribbon nickel coating corrosion resisting property and mechanical performance, battery slurry performance is improved.
Description
Technical field
The present invention relates to a kind of preparation method of sheet metal strip, more particularly to a kind of preparation method of high-flexibility nickel plated steel strip.
Background technology
In order to meet miniaturization, lighting and the high performance of Ni-MH battery, it is a highly effective direction to set about being improved from the collector of battery.Porous steel strip is so that intensity is high, good toughness and be widely used in the plate material of battery the advantages of low manufacture cost.Patent " punched nickel-plated steel band "（The patent No.：CN200420109432.8）In disclose the method that nickel plating is carried out on porous steel strip, but the patent system obtains nickel plated steel strip in the technique of thick nickel coating, can be because very strong hydrogen stress cause the elongation percentage of material inadequate with tensile strength, it is difficult to reach the requirement of some batteries client.
The content of the invention
The present invention is intended to provide a kind of better mechanical property, preparation method as a kind of high-flexibility nickel plated steel strip of the slurry performance of battery afflux liquid can be effectively improved.
The present invention is realized by following scheme：
A kind of preparation method of high-flexibility nickel plated steel strip, it is the porous steel strip that 0.025~0.08mm, aperture are 0.5~1.5mm as base material to use thickness, in the nickel coating that its surface deposit thickness is 5.0~10.0 μm, it is characterized in that, after the operation of deposition nickel, low-temperature prewarming treatment is first carried out, then carries out high temperature recrystallization treatment；Cold pretreatment condition is, under protective atmosphere or vacuum environment, temperature is 300~500 DEG C, and process time is 3~5 hours；High temperature recrystallization treatment conditions are, under protective atmosphere or vacuum environment, temperature is 600~750 DEG C, and process time is 6~10 hours.
To make the electrodeposition effect of base material more preferable, metal plating layer is combined more closely with substrate layer, before the deposited nickel layer step, first carries out oil removing to steel strip substrate, is then activated.
Cost-effective to adapt to produce, the protective atmosphere is with the volume ratio of nitrogen using the mixed atmosphere being made up of reducing gas hydrogen and protective gas nitrogen, wherein hydrogen（1~5）：1.
To obtain the strip material of more excellent performance, the volume ratio preferably 3 of hydrogen and nitrogen in the protective atmosphere：1.
Compared with prior art, advantages of the present invention is embodied in：
1st, using low-temperature prewarming handling process, the adhesion between coating and matrix can not only effectively be strengthened after depositing the operation of nickel in material, moreover it is possible to effectively remove the hydrogen stress in material structure.
2nd, plated crystal recrystallization treatment is carried out to the material after low-temperature prewarming is processed, coating is set to interpenetrate and merge with matrix, the grain structure of overall coating is further refined, the decay resistance of coating has been effectively improved, while improving the mechanical performance of material.
Brief description of the drawings
Fig. 1：The low stress stretching resistance comparison diagram of the nickel plated steel strip that embodiment 1 is prepared with existing process
Fig. 2：The nickel plated steel strip elongation percentage comparison diagram that embodiment 1 is prepared with existing process
Fig. 3：The coating crystal habit of the nickel plating porous steel strip prepared using the present invention
Fig. 4：The coating crystal habit of the nickel plating porous steel strip prepared using existing method.
Specific embodiment
Embodiment
1
It is 0.025mm to use thickness, aperture is the porous steel strip of 1.0mm as base material, by after electrochemical degreasing and acid-wash activation, into electric deposition nickel operation, using conventional watt system, nickel plating layer thick is 5 μm to nickel plating solution, after the material after nickel plating is cleaned and dried, low-temperature prewarming treatment is carried out into heat-treatment furnace, treatment conditions are：Using hydrogen:Nitrogen is 3:1 hybrid protection atmosphere, 6 hours are incubated under conditions of 350 DEG C, obtain the Cold pretreatment nickel plating porous steel strip after de-stress, then this material is carried out into high temperature recrystallization heat treatment, and heat treatment condition is：Using hydrogen:Nitrogen is 3:1 hybrid protection atmosphere, 10 hours are incubated under conditions of 600 DEG C, obtain high-flexibility nickel plated steel strip material.
The detection that will be carried out using high-flexibility nickel plated steel strip obtained in the present embodiment method and the nickel-coated porous steel strip prepared by existing method respectively, thickness of coating, base material specification all same, its contrasting detection result difference is as shown in Figure 1 and Figure 2.As can be seen from the figure, under conditions of same matrix and thickness of coating, the material lift 15% prepared than existing process with elongation percentage using the stretching resistance of the high-flexibility nickel plated steel strip prepared by the present embodiment method, therefore after battery pole piece is made, slurry cracking fraction defective is less than 95%.
To investigate the reason for above-mentioned different performance occur, high-flexibility nickel plated steel strip and nickel-coated porous steel strip obtained in common existing method obtained in above-mentioned the present embodiment will be used respectively in the crystal habit of its coating of electron scanning Microscopic observation, such as Fig. 3 and Fig. 4, contrast two figures, it can be seen that fine and close using high-flexibility nickel plated steel strip crystalline solid intergranular structure obtained in the inventive method, crystal grain is small and uniform；And it is big and uneven, not fine and close that porous steel strip coating crystal grain is covered obtained in existing method.
Embodiment
2
It is 0.04mm to use thickness, and aperture is the porous steel strip of 1.2mm as base material, by after electrochemical degreasing and acid-wash activation, into electro-deposition operation.Nickel plating solution is 6 μm using conventional watt system, nickel plating layer thick, after the material after nickel plating is cleaned and dried, low-temperature prewarming treatment is carried out into heat-treatment furnace, and treatment conditions are：Using hydrogen:Nitrogen is 4:1 mixing reproducibility mixed atmosphere, 5 hours are incubated under conditions of 400 DEG C, obtain the Cold pretreatment nickel-coated porous steel strip after de-stress.This material is carried out into high temperature recrystallization heat treatment again, heat treatment condition is：Using hydrogen:Nitrogen is 2:1 mixing reproducibility mixed atmosphere, 8 hours are incubated under conditions of 650 DEG C, obtain high-flexibility nickel plated steel strip.
In the crystal habit of its coating of electron scanning Microscopic observation, it is also seen that the result just like Fig. 3, plated layer compact, crystal grain is small and uniform.
Embodiment
3
It is 0.065mm to use thickness, and aperture is the porous steel strip of 1.3mm as base material, by after electrochemical degreasing and acid-wash activation, into electro-deposition operation.Using conventional watt system, nickel plating layer thick is 8 μm to nickel plating solution, after the material after nickel plating is cleaned and dried, low-temperature prewarming treatment is carried out into heat-treatment furnace, treatment conditions are：Using hydrogen:Nitrogen is 1:1 mixing reproducibility mixed atmosphere, 4 hours are incubated under conditions of 450 DEG C, obtain the Cold pretreatment nickel-coated porous steel strip after de-stress.This material is carried out into high temperature recrystallization heat treatment again, heat treatment condition is：Using hydrogen:Nitrogen is 3:1 mixing reproducibility mixed atmosphere, 7 hours are incubated under conditions of 700 DEG C, obtain high-flexibility nickel plated steel strip.
In the crystal habit of its coating of electron scanning Microscopic observation, it is also seen that the result just like Fig. 3, plated layer compact, crystal grain is small and uniform.
Embodiment
4
It is 0.08mm to use thickness, and aperture is the porous steel strip of 1.5mm as base material, by after electrochemical degreasing and acid-wash activation, into electro-deposition operation.Using conventional watt system, nickel plating layer thick is 10 μm to nickel plating solution, after the material after nickel plating is cleaned and dried, low-temperature prewarming treatment is carried out into heat-treatment furnace, treatment conditions are：In vacuum drying oven, 4 hours are incubated under conditions of 500 DEG C, obtain the Cold pretreatment nickel-coated porous steel strip after de-stress.This material is carried out into high temperature recrystallization heat treatment again, heat treatment condition is：Using hydrogen:Nitrogen is 3:1 mixing reproducibility mixed atmosphere, 6 hours are incubated under conditions of 750 DEG C, obtain final high-flexibility nickel plated steel strip.
In the crystal habit of its coating of electron scanning Microscopic observation, it is also seen that the result just like Fig. 3, plated layer compact, crystal grain is small and uniform.
Claims (4)
1. a kind of preparation method of high-flexibility nickel plated steel strip, it is the porous steel strip that 0.025~0.08mm, aperture are 0.5~1.5mm as base material to use thickness, in the nickel coating that its surface deposit thickness is 5.0~10.0 μm, it is characterised in that：After the operation of deposition nickel, low-temperature prewarming treatment is first carried out, then carry out high temperature recrystallization treatment；Cold pretreatment condition is, under protective atmosphere or vacuum environment, temperature is 300~500 DEG C, and process time is 3~5 hours；High temperature recrystallization treatment conditions are, under protective atmosphere or vacuum environment, temperature is 600~750 DEG C, and process time is 6~10 hours.
2. a kind of preparation method of high-flexibility nickel plated steel strip as claimed in claim 1, it is characterised in that：Before the deposited nickel layer step, oil removing first is carried out to steel strip substrate, then activated.
3. a kind of preparation method of high-flexibility nickel plated steel strip as claimed in claim 1 or 2, it is characterised in that：The mixed atmosphere that the protective atmosphere is made up of reducing gas hydrogen and protective gas nitrogen, wherein hydrogen are with the volume ratio of nitrogen（1~5）：1.
4. a kind of preparation method of high-flexibility nickel plated steel strip as claimed in claim 3, it is characterised in that：The volume ratio preferably 3 of hydrogen and nitrogen in the protective atmosphere：1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510820165.8A CN106757244A (en) | 2015-11-24 | 2015-11-24 | A kind of preparation method of high-flexibility nickel plated steel strip |
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| CN201510820165.8A CN106757244A (en) | 2015-11-24 | 2015-11-24 | A kind of preparation method of high-flexibility nickel plated steel strip |
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| CN106757244A true CN106757244A (en) | 2017-05-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109530527A (en) * | 2018-12-05 | 2019-03-29 | 常德力元新材料有限责任公司 | A kind of preparation method of punched nickel-plated steel band |
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2015
- 2015-11-24 CN CN201510820165.8A patent/CN106757244A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109530527A (en) * | 2018-12-05 | 2019-03-29 | 常德力元新材料有限责任公司 | A kind of preparation method of punched nickel-plated steel band |
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Application publication date: 20170531 |