CN103022516B - Machining method of miniature metal bipolar plate based on plasticine support - Google Patents
Machining method of miniature metal bipolar plate based on plasticine support Download PDFInfo
- Publication number
- CN103022516B CN103022516B CN201210578906.2A CN201210578906A CN103022516B CN 103022516 B CN103022516 B CN 103022516B CN 201210578906 A CN201210578906 A CN 201210578906A CN 103022516 B CN103022516 B CN 103022516B
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- Prior art keywords
- plasticine
- sheet metal
- bipolar plates
- micro
- support
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- 239000002184 metal Substances 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000003754 machining Methods 0.000 title claims abstract description 18
- 229910021431 alpha silicon carbide Inorganic materials 0.000 claims abstract description 15
- 239000004033 plastic Substances 0.000 claims abstract description 14
- 229920003023 plastic Polymers 0.000 claims abstract description 14
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004927 clay Substances 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 8
- 239000002985 plastic film Substances 0.000 claims abstract description 7
- 229920006255 plastic film Polymers 0.000 claims abstract description 7
- 238000009825 accumulation Methods 0.000 claims abstract description 5
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000002245 particle Substances 0.000 claims abstract description 5
- 229940099259 vaseline Drugs 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 238000003672 processing method Methods 0.000 claims description 14
- 230000002787 reinforcement Effects 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 5
- 235000011187 glycerol Nutrition 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 239000000446 fuel Substances 0.000 abstract description 8
- 239000012744 reinforcing agent Substances 0.000 abstract description 4
- 229920000915 polyvinyl chloride Polymers 0.000 abstract 2
- 239000004800 polyvinyl chloride Substances 0.000 abstract 2
- 239000010410 layer Substances 0.000 abstract 1
- 229940057995 liquid paraffin Drugs 0.000 abstract 1
- 239000002344 surface layer Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000003486 chemical etching Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 210000002615 epidermis Anatomy 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002362 mulch Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The invention relates to the field of a miniature fuel battery, and particularly relates to a machining method of a miniature metal bipolar plate based on a plasticine support. The machining method comprises the steps of arranging the plasticine support below a metal plate, paving a layer of PVC (Polyvinyl Chloride) plastic film with the thickness of less than 5mum on the upper surface layer of the plasticine support, controlling the motion path and speed of a micro-forming die head, and finishing the forming of the whole metal bipolar plate by the micro-forming die head through accumulation of plastic forming of a small region, wherein the plasticine comprises 70-80% of clay powder, 3-5% of liquid paraffin, 3-5% of glycerol, 2-3% of vaseline, 3-6% of talcum powder, 0.5-1.0 of alpha-SiC whisker reinforcing agent and 3-5% of water, wherein the whisker reinforcing agent has the particle size of 15-20mum and the whisker size of 150-200mum. The machining method solves the problems that when no support is arranged, the machining accuracy is low, and when an elastic support is added, resilience exists and the shape of the bipolar plate are affected, and has the advantages of high machining accuracy and low cost.
Description
Technical field
The present invention relates to micro fuel cell and micro Process field, specifically by the micro metal bipolar plates processing method referring to support based on plasticine, support by adding plasticine below sheet metal, plasticine supports upper epidermis and spreads the PVC plastic film adding a layer thickness and be less than 5 μm, control the microsecond delay die head direction of motion, path and process velocity to sheet metal processing flow channel, microsecond delay die head is by the accumulation of tiny area Plastic Forming, complete the shaping of whole pole plate, it is applicable to the micro-forming of ultra-thin metal bipolar plate, and machining accuracy is high, cost is low.
Background technology
Due to the understanding that people are on the rise to international energy shortage, environmental pollution, the clean fungible energy source easily of exploitation is inexorable trend.Fuel cell is made up of the electrolyte containing the anode of catalyst, negative electrode and ionic conduction, is a kind of device chemical energy in the fuel of sustainable supply and oxidant directly being changed into electric energy.Because fuel cell does not limit by Carnot's cycle efficiency without heat engine process, the power set that fuel cell will be forth generation Blast Furnace Top Gas Recovery Turbine Unit (TRT) after waterpower, firepower, nuclear energy and alternative internal combustion engine, have advantages such as polluting little, efficiency is high, mobility good, instant charging.Flow-field plate is the critical component of each monocell of series connection, performance requirement is high, play and collect and derived current, isolation and average mark gas distribution, simultaneously flow-field plate and flow-field plate are arranged and the hydro-thermal of battery manages, reactant distribution and product are discharged smoothly etc. to impact very greatly, and the Research on processing technology of flow-field plate receives much concern for this reason.Metallic flow field plate of micro fuel cell manufacturing process can adopt micro-plasticity forming method or the micro-processing technology based on MEMS (micro electro mechanical system) (as laser assisted microprocessing, photoetching, silicon micromachined, chemical etching, chemical etching etc.), and being formed with of these technology helps applying of micro metal flow-field plate and micro fuel cell.But also there are the following problems for existing micro-plasticity forming method:
If 1, adopted without die or without supporting way when processing metal bipolar plates, add man-hour because flanging region causes the drag of sheet metal machining area diverse location different, have resilience in the middle of pole plate, the accuracy of processing can be reduced.
If 2 with nick mould as support, first by corresponding matrix manufacturing out, procedure of processing and cost must be added, too increase the complexity of processing technology before processing flow channel.
If 3 processing metal sheet material areas are less, during polar plate flow passage processing, adjacent channels can influence each other, and reduces the machining accuracy of metal double polar plates.
If 4 adopt the soft mode such as rubber as support, can there is resilience in soft mode support, has a strong impact on flow channel shape and precision that metal double polar plates processed.
Therefore wish to propose a kind of micro metal bipolar plates manufacturing process reducing resilience, under sheet metal, add a kind of forming support, this is supported in forming process can not only regulate reaction of bearing according to plastic force, and without resilience after pole plate distortion.
Summary of the invention
The object of the invention is the deficiency overcoming prior art, there is provided a kind of plasticine to support and be used for processing metal bipolar plates, it is configured by clay powder 70 ~ 80%, atoleine 3 ~ 5%, glycerine 3 ~ 5%, vaseline 2 ~ 3%, talcum powder 3 ~ 6%, α-SiC whisker reinforcement agent 0.5 ~ 1.0% and water 3 ~ 5% to form that this plasticine supports, wherein α-SiC whisker reinforcement agent particle diameter is 15 ~ 20 μm, and whisker yardstick is 150 ~ 200 μm.These materials are mixed in proportion put in mixer and stir till mixing, required plasticine can be obtained.When processing metal bipolar plates, first be pressed into plasticine block with common moulding press, then the plasticine block of corresponding size is cut according to the machining area of pole plate, finally contact the rear chemical reaction that produce in various degree to prevent plasticine with sheet metal at plasticine Surface mulch one deck PVC plastic film, now carry out pole plate processing according to micro-plasticity forming processing method again, can processing metal bipolar plates.This invention ensures that machining accuracy, reduce resilience.
Object of the present invention is achieved through the following technical solutions: the micro metal bipolar plates processing method supported based on plasticine, it is characterized in that configuring a kind of plasticine is support as processing metal bipolar plates, then the microsecond delay die head direction of motion, path and process velocity is controlled to sheet metal processing flow channel by control system, microsecond delay die head, by the accumulation of tiny area Plastic Forming, completes the shaping in whole flow field; Wherein the configuration raw material composition of plasticine is clay powder 70 ~ 80%, atoleine 3 ~ 5%, glycerine 3 ~ 5%, vaseline 2 ~ 3%, talcum powder 3 ~ 6%, α-SiC whisker reinforcement agent 0.5 ~ 1.0% and water 3 ~ 5%, and when processing metal bipolar plates, add the PVC plastic film that a layer thickness is less than 5 μm again to come in contact to avoid plasticine and sheet metal on plasticine top layer, and then produce corrosion in various degree; Wherein α-SiC whisker reinforcement agent particle diameter is 15 ~ 20 μm, and whisker yardstick is 150 ~ 200 μm.
The above-mentioned micro metal bipolar plates processing method supported based on plasticine, it is characterized in that the pH value of the clay powder in the plasticine composition in plasticine support is between 5 ~ 9, α-SiC whisker reinforcement agent content according to metal double polar plates plastic force adjustment, α-SiC whisker reinforcement agent content and plastic force proportional.
The above-mentioned micro metal bipolar plates processing method supported based on plasticine, it is characterized in that the support force in order to ensure plasticine, plate thickness is less than 150 μm.
The above-mentioned micro metal bipolar plates processing method supported based on plasticine, is characterized in that first plasticine is pressed into plasticine block with moulding press, then cuts the plasticine block of corresponding size according to metallic plate machining area.
The bracing or strutting arrangement of the above-mentioned micro metal bipolar plates machining employing based on plasticine support comprises workbench, sheet metal fixture and plasticine; Workbench is positioned at the bottom of bracing or strutting arrangement; Sheet metal fixture is made up of bolt, blank holder, supporting seat and attachment screw, sheet metal fixture is fixed by attachment screw and workbench, sheet metal is placed on supporting seat, and the method that bolt is fixed by blank holder and supporting seat realizes the effect of flanging to sheet metal; Plasticine puts into the area of space surrounded by supporting seat, and the lower surface of plasticine upper surface and sheet metal is fitted, as the support of processing bipolar plates.
The present invention has following advantage:
1, owing to being the plasticine adding reinforcing agent as the material supported, thus after runner processing completes, the distortion produced is a kind of permanent plastic deformation, can not produce resilience, decrease forming defects, and it is more accurate to make the processing of sheet metal.
2, plasticine has certain intensity, is 30% ~ 50% of plastic force, and has compression strength, and when with microsecond delay die head processing flow channel, sheet metal is in compressive stress state, and it is more accurate to process.
3, owing to adding reinforcing agent in plasticine, therefore intensity can adjust, and can complete the processing of the sheet material to varying strength, different flow channel depth.
4, the formability of plasticine supported as intermetallic composite coating and plasticity good, when processing flow channel, the passage that after reducing, a time is later, on the impact of front a time, improves machining accuracy.
5, with plasticine as the support of processing metal bipolar plates, decrease machining period and the expense of dimpling mould and nick mould, forming efficiency and precision high, technique is simple and easy to control.
Accompanying drawing illustrates:
Fig. 1 is the micro metal bipolar plates machining sketch chart supported based on plasticine.
1 workbench 2 bolt 3 supporting seat 4 attachment screw 5 blank holder 6 control system 7 microsecond delay die head 8 sheet metal 9 plasticine supports
Embodiment:
Describe detail and the working condition of this micro metal bipolar plates processing based on plasticine support in detail below in conjunction with Fig. 1 and instantiation, this embodiment only for explaining the present invention, does not form limiting the scope of the present invention.
The micro metal bipolar plates processing method supported based on plasticine that the present invention proposes, first workbench 1 is fixed by appropriate location level, supporting seat 3 size is suitably adjusted according to the size of required processing metal sheet material, and the supporting seat 3 adjusted is lain in a horizontal plane on workbench 1, the supporting seat 3 of having good positioning and workbench 1 attachment screw 4 are connected and fixed; Plasticine proportioning is selected according to the intensity of the sheet metal of required processing flow channel, the configuration raw material composition of plasticine is clay powder 70 ~ 80%, atoleine 3 ~ 5%, glycerine 3 ~ 5%, vaseline 2 ~ 3%, talcum powder 3 ~ 6%, α-SiC whisker reinforcement agent 0.5 ~ 1.0% and water 3 ~ 5%, the pH value of clay powder is between 5 ~ 9, α-SiC whisker reinforcement agent content adjusts according to metal double polar plates plastic force, α-SiC whisker reinforcement agent content and plastic force proportional, α-SiC whisker reinforcement agent particle diameter is 15 ~ 20 μm, and whisker yardstick is 150 ~ 200 μm; Plasticine moulding press is pressed into plasticine block, then the plasticine support 9 of corresponding size and height is highly cut according to metallic plate machining area and supporting seat 3, the height of plasticine support 9 is identical with the height of supporting seat 3, plasticine is supported 9 to add in the space surrounded by supporting seat 3 and workbench 1, ensures that the height of plasticine support 9 is concordant with supporting seat 3 top; Support 9 surfaces at plasticine and lay a layer thickness PVC plastic films of being less than 5 μm, come in contact and then produce corrosion in various degree to avoid plasticine and metallic plate; Plate thickness is less than 150 μm, is placed on by sheet metal 8 on PVC plastic film, adds blank holder 5 in sheet metal 8 both sides, blank holder 5, sheet metal 8 and supporting seat 3 is coupled together with bolt 2; Then control microsecond delay die head 7 direction of motion, path and process velocity to sheet metal processing flow channel by control system 6, microsecond delay die head 7, by the accumulation of tiny area Plastic Forming, completes the shaping in whole flow field.
The micro metal bipolar plates processing method supported based on plasticine that the present invention proposes, wherein adopted bracing or strutting arrangement comprises workbench, sheet metal fixture and plasticine; Workbench is positioned at the bottom of bracing or strutting arrangement; Sheet metal fixture is made up of bolt, blank holder, supporting seat and attachment screw, sheet metal fixture is fixed by attachment screw and workbench, sheet metal is placed on supporting seat, and the method that bolt is fixed by blank holder and supporting seat realizes the effect of flanging to sheet metal; Plasticine puts into the area of space surrounded by supporting seat, and the lower surface of plasticine upper surface and sheet metal is fitted.
In sum, the present invention relates to microplate material manufacture field, the perfect deficiency by classical production process processing metal bipolar plates, to have as the support of processing metal bipolar plates with this plasticine that operating efficiency is high, accuracy is high, workable, safe and reliable, the simple advantage of technique, low without the need to the micro-mould of processed complex, cost, and carry out the runner of controlled working arbitrary shape by control system, and it is wide to carry out processed and applied scope to the sheet metal of varying strength.
Claims (5)
1. based on the micro metal bipolar plates processing method that plasticine supports, be characterised in that the support of a kind of plasticine of configuration as processing metal bipolar plates, then the microsecond delay die head direction of motion, path and process velocity is controlled to sheet metal processing flow channel by control system, microsecond delay die head, by the accumulation of tiny area Plastic Forming, completes the shaping in whole flow field; Wherein the configuration raw material composition of plasticine is clay powder 70 ~ 80%, atoleine 3 ~ 5%, glycerine 3 ~ 5%, vaseline 2 ~ 3%, talcum powder 3 ~ 6%, α-SiC whisker reinforcement agent 0.5 ~ 1.0% and water 3 ~ 5%, and when processing metal bipolar plates, add the PVC plastic film that a layer thickness is less than 5 μm again to come in contact to avoid plasticine and sheet metal on plasticine top layer, and then produce corrosion in various degree; Wherein α-SiC whisker reinforcement agent particle diameter is 15 ~ 20 μm, and whisker yardstick is 150 ~ 200 μm.
2. the micro metal bipolar plates processing method supported based on plasticine according to claim 1, it is characterized in that the pH value of the clay powder in plasticine composition is between 5 ~ 9, α-SiC whisker reinforcement agent content according to metal double polar plates plastic force adjustment, α-SiC whisker reinforcement agent content and plastic force proportional.
3. the micro metal bipolar plates processing method supported based on plasticine according to claim 1, it is characterized in that the support force in order to ensure plasticine, plate thickness is less than 150 μm.
4. the micro metal bipolar plates processing method supported based on plasticine according to claim 1, is characterized in that plasticine moulding press is pressed into plasticine block, then cuts the plasticine block of corresponding size according to sheet metal machining area.
5. the micro metal bipolar plates processing method supported based on plasticine according to claim 1, is characterized in that adopted bracing or strutting arrangement comprises workbench, sheet metal fixture and plasticine; Workbench is positioned at the bottom of bracing or strutting arrangement; Sheet metal fixture is made up of bolt, blank holder, supporting seat and attachment screw, sheet metal fixture is fixed by attachment screw and workbench, sheet metal is placed on supporting seat, and the method that bolt is fixed by blank holder and supporting seat realizes the effect of flanging to sheet metal; Plasticine puts into the area of space surrounded by supporting seat, and the lower surface of plasticine upper surface and sheet metal is fitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210578906.2A CN103022516B (en) | 2012-12-28 | 2012-12-28 | Machining method of miniature metal bipolar plate based on plasticine support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210578906.2A CN103022516B (en) | 2012-12-28 | 2012-12-28 | Machining method of miniature metal bipolar plate based on plasticine support |
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| Publication Number | Publication Date |
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| CN103022516A CN103022516A (en) | 2013-04-03 |
| CN103022516B true CN103022516B (en) | 2015-04-08 |
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| CN201210578906.2A Expired - Fee Related CN103022516B (en) | 2012-12-28 | 2012-12-28 | Machining method of miniature metal bipolar plate based on plasticine support |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161731B (en) * | 2015-07-03 | 2016-08-24 | 中国石油大学(华东) | The superplastic forming device of one metal double-plate for proton exchange film fuel cell and technique |
| CN108832142A (en) * | 2018-06-26 | 2018-11-16 | 李荣旭 | A kind of processing unit (plant) of proton exchange membrane fuel cell metal flow-field plate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101504984A (en) * | 2009-03-24 | 2009-08-12 | 武汉理工大学 | Metallic bipolar plate forming mold for fuel cell and forming method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005082024A2 (en) * | 2004-02-24 | 2005-09-09 | Ini Power Systems, Inc. | Fuel cell apparatus and method of fabrication |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101504984A (en) * | 2009-03-24 | 2009-08-12 | 武汉理工大学 | Metallic bipolar plate forming mold for fuel cell and forming method |
Non-Patent Citations (3)
| Title |
|---|
| Production of metallic glassy bipolar plates for PEM fuel cells by hot pressing in the supercooled liquid state;Masanori Yokoyama et al.;《International Journal of Hydrogen Energy》;20080920(第33期);第5678-5685页 * |
| 下压量对微型燃料电池双极板成形性能的影响;王匀等;《中国机械工程》;20121031;第23卷(第20期);第2501-2503页 * |
| 质子交换膜燃料电池双极板累积成形研究;王晶晶等;《机械设计与制造》;20120331(第3期);第198-200页 * |
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| CN103022516A (en) | 2013-04-03 |
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