CN203894144U - Low-voltage anode foil corrosion resistance testing device for aluminum electrolytic capacitor - Google Patents
Low-voltage anode foil corrosion resistance testing device for aluminum electrolytic capacitor Download PDFInfo
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- CN203894144U CN203894144U CN201420282180.2U CN201420282180U CN203894144U CN 203894144 U CN203894144 U CN 203894144U CN 201420282180 U CN201420282180 U CN 201420282180U CN 203894144 U CN203894144 U CN 203894144U
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- electrolytic capacitor
- beaker
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- power supply
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Abstract
The utility model relates to aluminum foil inspection equipment, and in particular relates to a low-voltage anode foil corrosion resistance testing device for an aluminum electrolytic capacitor. The device is characterized by being provided with a beaker (1) for containing acid liquid, wherein the beaker (1) is equipped with a power supply (4); at least one of two poles of the power supply (4) is provided with a contact (5) connected with an aluminum foil test piece (6). The device has the beneficial effects that the corrosion resistance testing of the aluminum foil is carried out under an energizing condition, so that the corrosion resistance of the superficial layer and the basal body of the aluminum foil is all detected, and thus the obtained data approaches to actual situations during the machining of the aluminum foil, and the detection result is accurate and reliable. The device has the characteristics of simple structure, low cost, convenience in operation and the like, and can possibly become universal detection equipment in the industry.
Description
Technical field
The utility model relates to a kind of aluminium foil inspection machine, i.e. a kind of low-voltage anodic foil for aluminum electrolytic capacitor corrosion stability proving installation.
Background technology
Aluminum electrolytic capacitor is a kind of electronic devices and components that are widely used in electric equipment products, and one of its critical material is low-voltage anode foil, also claims low-voltage foil, aluminium foil or light paper tinsel.Aluminium foil is sent out hole by surface corrosion and is obtained large specific surface area, then by changing into, makes the positive pole of corrosion Waste Acid From Hua Cheng Foil as aluminium electrolutic capacitor.The corrosion process of low-voltage anode foil is: first erode away a large amount of small pits at aluminium foil surface, then reaming produces hole in pit.Research shows, low-voltage foil corrosion process is very complicated, the result of its corrosion with the dislocation of aluminium foil surface, be mingled with, the many factors such as crystal boundary, component segregation, stress are concentrated, machinery scuffings is relevant, particularly with aluminium foil in the content of the snotter such as iron, silicon, copper closely related with distribution.For above-mentioned reasons, low-voltage foil product quality is difficult to control, even the aluminium foil products of same producer different batches, its decay resistance also may be not quite similar.Therefore, before using, aluminium foil must carry out corrosion-resistant test.
At present in industry, conventional corrosion-resistant detection and equipment is the container of splendid attire acid solution, aluminium foil is directly put in the hydrochloric acid of 5mol/L and is soaked 10 minutes, rinses, dries, and calculates the weight difference before soaking and after soaking.Because aluminium foil is easily corroded, in actual production, only pay close attention to its decay resistance, generally think that aluminium foil attenuate under test condition is that corrosion stability is good below 0.3%.This device is simple, easy and simple to handle, has obtained general application, but the accuracy of testing result is very poor.The aluminium foil of test passes shows bad phenomenon and frequently occurs in actual production, often causes responsibility dispute.
Think, what when low-voltage anode foil is produced, use is mainly galvanic corrosion, and it is 50% left and right that final products obtain paper tinsel rate, in corrosion process, can lose the weight of about half, existing acid corrosion test is simple chemical corrosion, and the loss in weight is only 0.3% left and right, and both differ greatly.The part that aluminium foil loses in test is skin-material, only can reflect the shallow expression condition of aluminium foil, can not reflect the situation of aluminium foil deep layer, thereby production run is lacked to directive significance.
Summary of the invention
The purpose of this utility model is to provide a kind of can test the decay resistance of aluminium foil, and simple and easy to do, and test result more approaches the proving installation of the corrosion-resistant actual conditions of aluminium foil.
Above-mentioned purpose is realized by following technical scheme: develop a kind of low-voltage anodic foil for aluminum electrolytic capacitor corrosion stability proving installation, be characterized in: described device has the beaker of splendid attire acid solution, beaker is furnished with power supply, has at least a utmost point to be provided with the contact joining with aluminium foil test piece in the middle of the two poles of the earth of power supply.
The positive pole of described power supply connects aluminium foil, and negative pole connects carbon element plate.
The acid solution of described beaker splendid attire is that mass ratio is 15%～20% HCl or 10%～15% H
2sO
4.
Described power supply is direct supply, and output current density is 38-42A/dm
2.
Below described beaker, is furnished with magnetic stirring apparatus.
Described beaker is 3000ml glass cylinder, the beaker cover plate of being furnished with insulation suitable for reading, on cover plate, have three electrode jacks and two thermowells, in the middle of three electrode jacks, middle one is matched with the clamping plate of clamping aluminium foil test piece, two of both sides match with carbon element plate or the U-shaped copper sheet that is connected carbon element plate, and aluminium foil test piece connects positive source, and two carbon element plates or the U-shaped copper sheet that connects two carbon element plates connect power cathode.
Described two thermowells match with the control temperature meter of thermometer and magnetic stirring apparatus respectively.
The beneficial effects of the utility model are: aluminium foil carries out corrosion-resistant test under power on condition, the shallow top layer of aluminium foil and the corrosion resisting property of matrix are all detected, the data obtained more approaches the actual conditions that aluminium foil adds man-hour, testing result accurately and reliably, and have simple in structure, the feature such as cheap, easy to operate, is expected to become the checkout equipment that the industry is general.
Brief description of the drawings
Fig. 1 is the front view of the first embodiment;
Fig. 2 is the vertical view of the first embodiment;
Fig. 3 is the circuit diagram of the first embodiment;
Fig. 4 is the front view of the second embodiment;
Fig. 5 is the front view of the third embodiment.
Visible in figure: beaker 1, electrode 2, cover plate 3, power supply 4, contact 5, aluminium foil test piece 6, magnetic stirring apparatus 7, magneton 8, thermometer 9, acidproof control temperature meter 10, carbon element plate 11, clamping plate 12, U-shaped copper sheet 13.
Embodiment
The total design of the utility model is to provide a kind of splendid attire acid solution and is furnished with the beaker of power supply, the device that can carry out corrosion-resistant test to aluminium foil under the condition of energising.Introduce three kinds of embodiment below in conjunction with accompanying drawing:
The first embodiment: Fig. 1 Fig. 2 Fig. 3 has introduced the corrosion-resistant proving installation of a kind of aluminium foil, has a beaker 1, and filling quality is than 15%～20% hydrochloric acid (HCl) or 10%～15% sulfuric acid (H in beaker
2sO
4).Beaker is furnished with insulation cover plate 3, is furnished with direct supply 4 on cover plate 3.The wire that the positive and negative electrode 2 at power supply 4 two ends picks out enters beaker 1, and the outer end of wire is provided with contact 5, and contact 5 can be a kind of clamp, and aluminium foil test piece 6 two ends are clipped in two clamps, turn on the power switch, and aluminium foil test piece 6 is switched on, current density 38-42A/dm
2, 65 ± 5 DEG C of temperature, time 2.5-3.5min, taking 3min as preferred.Test index is calculated by weight-loss method, has for standard test piece: Δ m=m1-m2, the wherein weight before m1=test, the weight after m2=test, the weight that Δ m=loses.Weigh with m1-m2/m1 for nonstandard test piece.
Since 2013, carry out the repeatedly contrast experiment of new and old proving installation, under the conditions such as same acids liquid same time, the material wastage rate of this device is the more than 30 times of old device, can simulate the actual production process of low-voltage anodic foil for aluminum electrolytic capacitor, the decay resistance of accurate response aluminium foil.In addition, also cooperate with manufacturer, the accuracy of this method of testing has been carried out to Statistical Comparison, analysis result proves, adopt the test result of this method and the coincidence rate of actual production to improve more than 20% than former method, reach 92.5%, can for the production of and the process of circulation.
The second embodiment: as shown in Figure 4, the corrosion-resistant proving installation of this aluminium foil and the first embodiment are basic identical, also have beaker 1 and the direct supply 4 of splendid attire acid solution, aluminium foil test specimen 6 detects in the time of energising, and its improvement is: below beaker 1, be provided with magnetic stirring apparatus 7, after switching on power, the magnetic field of rotation drives the magneton 8 in beaker 1 to rotate, and stirs acid solution, makes the composition of acid solution and temperature more even, and have impact, test result is more accurate.Test result improves more than 23% than former method with the coincidence rate of actual production, reaches 95.5%, can for the production of and the process of circulation.
The third embodiment: Fig. 5 has introduced a kind of corrosion-resistant proving installation of aluminium foil test piece 6, and its main body is a 3000ml glass beaker 1, is furnished with a magnetic stirring apparatus 7 below, and is furnished with a direct supply.The circular cover 3 that beaker 1 has a PVC to make above, has three slots arranged side by side and two through holes on cover plate 3.In the middle of three slots, middle slot matches with the PVC clamping plate 12 of clamping aluminium foil test piece 6, and the slot on both sides matches with two blocks of T shape carbon element plates 11.Aluminium foil test piece 6 is joined with the positive pole of power supply, and two carbon element plate 11 upper ends are connected by a U-shaped copper sheet 13, and U-shaped copper sheet 13 joins with the negative pole of power supply.The common alcohol thermometer 9 of plug-in mounting of two through holes, the acidproof control temperature meter 10 of another plug-in mounting magnetic stirring apparatus.Also be provided with the control assemblies such as heating, constant temperature, timing simultaneously.
When work, first the aluminium foil of test use is made to width is identical with the narrow limit of PVC clamping plate 12, the aluminium foil test piece 6 of length about compared with the long 1cm of PVC clamping plate, carry out ungrease treatment, dry, weigh with alcohol, recording weight is m1.Aluminium foil test piece 6 is clipped in the middle of two PVC clamping plate 12.The both positive and negative polarity of direct supply connects respectively a wire, and wire end connects a clip, and the clip of negative pole end clips on U-shaped copper sheet 13, and the clip of positive terminal is in the upper end of aluminium foil test piece 6 of exposing clamping plate 12.Press timer switch, press DC power supply switch simultaneously, when timing finishes, close direct supply.Take off the clip of positive terminal, the aluminium foil test piece 6 being clipped in the middle of PVC plate is taken out, rinse, dry, weigh, recording weight is m2.Quantitatively detect corrosion stability computing formula: absolute weightless Δ m=m1-m2.Both sides of supply and demand can be decided through consultation a standard value with regard to Δ m, and the Δ m that experiment records is qualified lower than this standard value, and height is defective, does corresponding measure.Test result improves more than 26.7% than former method with the coincidence rate of actual production, reaches 99.2%, completely can for the production of and the process of circulation.
Claims (7)
1. a low-voltage anodic foil for aluminum electrolytic capacitor corrosion stability proving installation, it is characterized in that: described device has the beaker (1) of splendid attire acid solution, beaker (1) is furnished with power supply (4), the contact (5) that has at least a utmost point to be provided with in the middle of the two poles of the earth of power supply (4) to join with aluminium foil test piece (6).
2. low-voltage anodic foil for aluminum electrolytic capacitor corrosion stability proving installation according to claim 1, is characterized in that: the positive pole of described power supply is provided with the contact (5) joining with aluminium foil test piece (6).
3. low-voltage anodic foil for aluminum electrolytic capacitor corrosion stability proving installation according to claim 1, is characterized in that: the acid solution of described beaker (1) splendid attire is that mass ratio is 15%～20% HCl or 10%～15% H
2sO
4.
4. low-voltage anodic foil for aluminum electrolytic capacitor corrosion stability proving installation according to claim 1, is characterized in that: described power supply (4) is direct supply, output current density is 38-42A/dm
2.
5. low-voltage anodic foil for aluminum electrolytic capacitor corrosion stability proving installation according to claim 1, is characterized in that: below described beaker (1), be furnished with magnetic stirring apparatus (7).
6. low-voltage anodic foil for aluminum electrolytic capacitor corrosion stability proving installation according to claim 1, it is characterized in that: described beaker (1) is 3000ml glass cylinder, beaker (1) cover plate (3) of being furnished with insulation suitable for reading, on cover plate (3), have three electrode (2) jacks and two thermometers (9) jack, in the middle of three electrodes (2) jack, middle one is matched with the clamping plate (12) of clamping aluminium foil test piece (6), two of both sides match with carbon element plate (11) or the U-shaped copper sheet (13) that is connected two carbon element plates, aluminium foil test piece (6) connects power supply (4) positive pole, the U-shaped copper sheet (13) of two carbon element plates (11) or two carbon element plates of connection connects power supply (4) negative pole.
7. low-voltage anodic foil for aluminum electrolytic capacitor corrosion stability proving installation according to claim 6, is characterized in that: described two thermometers (9) jack matches with the acidproof control temperature meter (10) of thermometer (9) and magnetic stirring apparatus (7) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420282180.2U CN203894144U (en) | 2014-05-29 | 2014-05-29 | Low-voltage anode foil corrosion resistance testing device for aluminum electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420282180.2U CN203894144U (en) | 2014-05-29 | 2014-05-29 | Low-voltage anode foil corrosion resistance testing device for aluminum electrolytic capacitor |
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| Publication Number | Publication Date |
|---|---|
| CN203894144U true CN203894144U (en) | 2014-10-22 |
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ID=51720534
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420282180.2U Expired - Fee Related CN203894144U (en) | 2014-05-29 | 2014-05-29 | Low-voltage anode foil corrosion resistance testing device for aluminum electrolytic capacitor |
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| CN (1) | CN203894144U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104034650A (en) * | 2014-05-29 | 2014-09-10 | 内蒙古霍煤鸿骏高精铝业有限责任公司 | Low voltage anode foil corrosion resistance test method and testing device for aluminium eletrolytic capacitor |
-
2014
- 2014-05-29 CN CN201420282180.2U patent/CN203894144U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104034650A (en) * | 2014-05-29 | 2014-09-10 | 内蒙古霍煤鸿骏高精铝业有限责任公司 | Low voltage anode foil corrosion resistance test method and testing device for aluminium eletrolytic capacitor |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141022 Termination date: 20150529 |
|
| EXPY | Termination of patent right or utility model |