CN101750440A - Method for detecting assembly quality of cathode carbon block of electrolytic cell and test fixture - Google Patents
Method for detecting assembly quality of cathode carbon block of electrolytic cell and test fixture Download PDFInfo
- Publication number
- CN101750440A CN101750440A CN200810069032A CN200810069032A CN101750440A CN 101750440 A CN101750440 A CN 101750440A CN 200810069032 A CN200810069032 A CN 200810069032A CN 200810069032 A CN200810069032 A CN 200810069032A CN 101750440 A CN101750440 A CN 101750440A
- Authority
- CN
- China
- Prior art keywords
- carbon block
- connecting link
- quality
- assembling
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 239000002562 thickening agent Substances 0.000 claims description 28
- 229910000754 Wrought iron Inorganic materials 0.000 claims description 22
- 238000009413 insulation Methods 0.000 claims description 13
- 235000000396 iron Nutrition 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 230000007812 deficiency Effects 0.000 abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052782 aluminium Inorganic materials 0.000 abstract description 2
- 238000003908 quality control method Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 abstract 2
- 239000010959 steel Substances 0.000 abstract 2
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 230000000007 visual effect Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 8
- 238000002788 crimping Methods 0.000 description 6
- 210000004027 cell Anatomy 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 210000002421 cell wall Anatomy 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000001303 quality assessment method Methods 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
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- Electrolytic Production Of Metals (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a method for detecting the assembly quality of a cathode carbon block of an electrolytic cell and a test fixture, a loop resistance tester is adopted for detecting the resistance between the carbon block and an assembly paste, the resistance of the assembly paste and the resistance between the assembly paste and steel rods, side points of U+ and I+ of the loop resistance tester are respectively positioned at four end sockets of the two steel rods, U- and I- are respectively positioned in the middle section of the carbon block, and the assembly quality of the cathode carbon block of the electrolytic cell is identified through the detected resistance values. The method carries out the standard detection and the control on the quality of the carbon block assembled by a worker through a unified and scientific detection means, thereby eliminating the currently used original detection method of visual observation, avoiding the unqualified assembled carbon block from entering into the electrolytic cell, making up for the deficiency of quality control of the assembly process of the cathode carbon block in the electrolytic aluminum industry in China, further realizing the standard quantitative control of the quality of the cathode assembled carbon block and stabilizing the overhaul quality of the electrolytic cell.
Description
Technical field
The present invention relates to a kind of carbon piece quality determining method and test fixture, particularly relate to a kind of method and test fixture that detects assembling quality of cathode carbon block of electrolytic bath.
Background technology
In electrolytic cell overhaul, it is bottom land cathode block assembling procedure that one important operation arranged, and the carbon piece assembling quality in this operation can produce significant impact to the electrolytic cell overhaul quality.And the control emphasis of assembling quality is to improve detection qualitatively, judges the good with bad of assemble carbon piece by detecting data.In the prior art, on carbon piece assembling quality detects, the detection means of neither one science and examination criteria judge that the quality of assemble carbon piece is good and bad for a long time, can only assemble with operator's assembling experience, quality inspection personnel carries out quality assessment by the method for human eye range estimation to the carbon piece after assembling, lack science, Yan Jinxing.Whether this rough detection method can't detect the underbead crack of assemble carbon piece, more can't the detecting operation workman closely prick carbon piece, rod iron and thickener three bonding admittedly.Defective in quality carbon piece is in time found to be used for bottom of electrolytic tank because of failing, and will have a strong impact on the serviceable life behind the electrolytic cell overhaul, even the phenomenon that bakie just took place in several days in the electrolytic tank energising occur, causes heavy economic losses to enterprise.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of science detection means and detects assemble carbon piece quality, stops packaged method and the test fixture of going into the detection assembling quality of cathode carbon block of electrolytic bath of electrolytic tank of underproof assemble carbon, to overcome the deficiencies in the prior art.
Technical scheme of the present invention is: the method that detects assembling quality of cathode carbon block of electrolytic bath is to adopt circuit resistance tester that the resistance of the resistance between carbon piece and the assembling thickener, assembling thickener self and the resistance between assembling thickener and the rod iron are detected the side point U of circuit resistance tester
+, I
+Lay respectively at four terminations of two rod irons, U
-, I
-Lay respectively at the stage casing of carbon piece, identify the assembling quality of cathode carbon block of electrolytic bath by the resistance value that detects.
Used circuit resistance tester is the HLC5501 circuit resistance tester
The side point U of circuit resistance tester
+, I
+Between and U
-, I
-Between distance be 250mm.
The p-wire of circuit resistance tester is 10mm
2Single copper flexible cord.
The test fixture that detects assembling quality of cathode carbon block of electrolytic bath is for connecting U
+And I
+Test fixture comprise U
+Connecting link 2 and I
+Connecting link 3, U
+Connecting link 2 and I
+Interconnect by vertical rod I4 between the connecting link 3, and at I
+The stage casing of connecting link 3 is provided with insulation course I5, is connected with spring I7 between insulation course I5 and vertical rod I4, at U
+The bottom of connecting link 2 is connected with magnetic support 6 and voltage test points 1; Connect U
-And I
-Test fixture comprise U
-Connecting link 9 and I
-Connecting link 10, U
-Interconnect by vertical rod II11 between connecting link 9 and the I-connecting link 10, and be provided with insulation course II12, between insulation course II12 and vertical rod II11, be connected with spring II13, at U in the stage casing of I-connecting link 10
-The bottom of connecting link 9 is connected with voltage test points 8.
The length of vertical rod I4 and vertical rod II11 is 250mm.
Compared with the prior art, the present invention is by analyzing assemble carbon piece test resistance;
The test resistance of analyzing back assemble carbon piece is by forming with the lower part, as shown in Figure 2:
R1: resistance between test fixture and the carbon piece;
R2: carbon piece self-resistance;
R3: resistance between carbon piece and the assembling thickener;
R4: assembling thickener self-resistance;
R5: resistance between assembling thickener and the rod iron;
R6: rod iron self-resistance;
R7: resistance between test fixture and the rod iron;
Assemble carbon piece test resistance R=R1+R2+R3+R4+R5+R6+R7 considers that carbon piece self-resistance R2 and rod iron self-resistance R6 immobilize, and that the fluctuation of actual influence assemble carbon piece resistance value changes is R1, R3, R4, R5 and R7.
1, analysis influences the factor of assemble carbon piece resistance value fluctuation.
(1), resistance R 1 between test fixture and the carbon piece.
Before measurement, thoroughly cleaning is clean with the lip-deep dust of carbon piece test point, make the test resistance of every carbon piece test point identical, the special test anchor clamps that the present invention simultaneously proposes (band spring and magnet), make the crimping pressure of measuring every carbon piece identical, thereby make the crimping resistance of every carbon piece identical, therefore, it is identical to can be considered every carbon piece resistance R 1 between special test anchor clamps and carbon piece, and promptly R1 immobilizes.
(2), the resistance R 5 between resistance R 3 and assembling thickener self-resistance R4 and assembling thickener and the rod iron between carbon piece and the assembling thickener.
R3: have or not the heating-up temperature of quality, assembling thickener ratio of compression and the carbon piece of dust, assembling thickener and assembling thickener relevant with carbon piece assembling cell wall.
R4: relevant with assembling thickener ratio of compression with assembling paste quality, heating-up temperature.
R5: the heating-up temperature of quality, assembling thickener ratio of compression and rod iron and assembling thickener of milling quality, assembling thickener with rod iron sand is relevant.
(3), resistance R 7 between test fixture and the rod iron.
Because of using identical test fixture, identical measuring method and crimping pressure, to mill at rod iron sand under the prerequisite of quality assurance, the variation of R7 is small, can ignore, and promptly looks R1 and immobilizes.
Through above analysis, the factor of actual influence assemble carbon piece resistance mainly is as can be seen: R3, R4, R5.Both had or not dust, assembling paste quality, rod iron sand to mill outside the Pass quality and assembling thickener ratio of compression have, also with assemble carbon piece, assembling thickener and rod iron three's heating-up temperature relevant (under identical room temperature, can not considering) with the assembling cell wall.Under R1, R2, the changeless situation of R6, R7, detect every carbon piece assembling quality and be specially detection:
R
*(variation)=R3+R4+R5;
Promptly detect the resistance between carbon piece and the assembling thickener, the resistance of assembling thickener self and the resistance between assembling thickener and the rod iron.So just can carry out standardization to the quality of workman's assemble carbon piece and detect control by the detection means of a kind of unification, science, eliminate the original detection method of using " range estimation " now, stopping underproof assemble carbon piece enters in the electrolytic tank, remedied in China's aluminum electrolysis industry deficiency in the quality control of cathode block assembling process, thereby realize the standard quantified controlling of anticathode assemble carbon piece quality, stablized the electrolytic cell overhaul quality, reach and prolong electrolytic tank serviceable life, improve the business economic benefit.The side point U of circuit resistance tester
+, I
+Lay respectively at four terminations of two rod irons, U
-, I
-Lay respectively at the stage casing of carbon piece, every carbon piece is measured four points altogether like this, can detect and respectively hold the assembling quality situation, makes things convenient for actual measurement again, has better operability.Side point U
+, I
+Between and U
-, I
-Between distance measure resistance error minimum during for 250mm, these data are to experimental results show that the statistics gained through substantive test.
U
+And I
+The U of test fixture
+Connecting link and I
+Interconnect by vertical rod between the connecting link, vertical rod length is 250mm, can make like this to measure resistance error minimum, at I
+The stage casing of connecting link is provided with insulation course I, can cut off U like this
+And I
+At I
+Socket spring on the connecting link is at U
+The bottom of connecting link is connected with magnetic support and voltage test points, and voltage test points is positioned at the lower end of magnet, like this by magnetic conduction U
+And I
+Test fixture just can inhale on rod iron I
+Connecting link is adjacent to rod iron under the elastic potential energy of spring, thereby the crimping pressure of guaranteeing every rod iron is identical.U
-And I
-Test fixture and U
+And I
+Test clip have same function; Simultaneously test fixture provided by the invention also have lightly, stablize, easy use, just advantage such as operation.
Description of drawings
Fig. 1 is the circuit resistance tester wiring schematic diagram;
Fig. 2 is that the test resistance of assemble carbon piece is formed synoptic diagram;
Fig. 3 is for connecting U
+And I
+The synoptic diagram of test fixture;
Fig. 4 is for connecting U
-And I
-The synoptic diagram of test fixture;
Fig. 5 is the measurement point position view.
Embodiment
Embodiment: as Fig. 1 and shown in Figure 5, when adopting the HLC5501 circuit resistance tester that the resistance between carbon piece and the assembling thickener, the resistance of assembling thickener self and the resistance between assembling thickener and the rod iron are detected, the side point U of HLC5501 circuit resistance tester
+, I
+Lay respectively at four terminations of two rod irons, U
-, I
-Lay respectively at the stage casing of carbon piece, the particular location and the size of measurement point are seen Fig. 5, and a point of the corresponding respectively test carbon of four ends of two rod irons, every end piece is with U
+And I
+The U of test fixture
+, I
+Measurement point is connected on rod iron A, B, C, D four ends, U respectively
-And I
-The U of test fixture
-, I
-Measurement point is connected on a, b, c, the d point of corresponding carbon piece respectively, and every carbon piece is measured four points altogether, can detect like this and respectively hold the assembling quality situation, makes things convenient for actual measurement again, has better operability.During test, adopt 10mm respectively
2Single copper flexible cord with U
+, I
+, U
-And I
-Be connected with the HLC5501 circuit resistance tester, elect the setting of HLC5501 circuit resistance tester as 100A/10S, press feeler switch, show, record measured point test data up to the liquid crystal display flicker.Each test data is compared analysis, thereby detect and control cathode carbon piece assembling quality.
Because of the HLC5501 circuit resistance tester can not well satisfy the present invention from carrying jig, the applicant has made connection U
+And I
+Test fixture be connected U
-And I
-Test fixture, as Fig. 3 and Fig. 4; Connect U
+And I
+Test fixture comprise U
+Connecting link 2 and I
+Connecting link 3, U
+Connecting link 2 and I
+Interconnect by vertical rod I 4 between the connecting link 3, and at I
+The stage casing of connecting link 3 is provided with insulation course I5, is connected with spring I7 between insulation course I5 and vertical rod I4, the I of circuit resistance tester
+P-wire is connected I
+On the current test point of connecting link 3 hypomeres, at U
+The bottom of connecting link 2 is connected with magnetic support 6 and voltage test points 1, the U of circuit resistance tester
+P-wire is connected on the voltage test points 1; Connect U
-And I
-Test fixture comprise U
-Connecting link 9 and I
-Connecting link 10, U
-Connecting link 9 and I
-Interconnect by vertical rod II11 between the connecting link 10, and at I
-The stage casing of connecting link 10 is provided with insulation course II12, is connected with spring II13 between insulation course II12 and vertical rod II11, the I of circuit resistance tester
-P-wire is connected I
-On the current test point of connecting link 10 hypomeres, at U
-The bottom of connecting link 9 is connected with voltage test points 8, the U of circuit resistance tester
-P-wire is connected on the voltage test points 8.Adopt this special test fixture, not only can guarantee U by vertical rod
+And I
+Between, U
-And I
-Between distance, and by magnetic support and spring crimping rod iron or carbon piece, make the crimping pressure of every rod iron of measurement and carbon piece identical, can guarantee measuring accuracy.
While the present invention, also the position and the assembling effect of assembler assembling are noted by tester, be convenient to fulfill one's duties, improve the assembler working sense of responsibility, to stable and control assemble carbon piece quality, stop the electrolytic tank that defective in quality assembled block is used for overhaul, reach and improve the business economic benefit, prolong the electrolytic tank purpose in serviceable life.
Claims (6)
1. method that detects assembling quality of cathode carbon block of electrolytic bath, it is characterized in that: it is to adopt circuit resistance tester that the resistance of the resistance between carbon piece and the assembling thickener, assembling thickener self and the resistance between assembling thickener and the rod iron are detected the side point U of circuit resistance tester
+, I
+Lay respectively at four terminations of two rod irons, U
-, I-lays respectively at the stage casing of carbon piece, identifies the assembling quality of cathode carbon block of electrolytic bath by the resistance value that detects.
2. the method for detection assembling quality of cathode carbon block of electrolytic bath according to claim 1 is characterized in that: used circuit resistance tester is the HLC5501 circuit resistance tester
3. the method for detection assembling quality of cathode carbon block of electrolytic bath according to claim 1 and 2 is characterized in that: the side point U of circuit resistance tester
+, I
+Between and U
-, I
-Between distance be 250mm.
4. the test fixture of detection assembling quality of cathode carbon block of electrolytic bath according to claim 1 is characterized in that: the p-wire of circuit resistance tester is 10mm
2Single copper flexible cord.
5. a test fixture that detects assembling quality of cathode carbon block of electrolytic bath is characterized in that: connect U
+And I
+Test fixture comprise U
+Connecting link (2) and I
+Connecting link (3), U
+Connecting link (2) and I
+Interconnect by vertical rod I (4) between the connecting link (3), and at I
+The stage casing of connecting link (3) is provided with insulation course I (5), is connected with spring I (7) between insulation course I (5) and vertical rod I (4), at U
+The bottom of connecting link (2) is connected with magnetic support (6) and voltage test points (1); Connect U
-And I
-Test fixture comprise U
-Connecting link (9) and I
-Connecting link (10), U
-Connecting link (9) and I
-Interconnect by vertical rod II (11) between the connecting link (10), and at I
-The stage casing of connecting link (10) is provided with insulation course II (12), is connected with spring II (13) between insulation course II (12) and vertical rod II (11), at U
-The bottom of connecting link (9) is connected with voltage test points (8).
6. the test fixture of detection assembling quality of cathode carbon block of electrolytic bath according to claim 5 is characterized in that: the length of vertical rod I (4) and vertical rod II (11) is 250mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100690321A CN101750440B (en) | 2008-12-11 | 2008-12-11 | Method for detecting assembly quality of cathode carbon block of electrolytic cell and test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100690321A CN101750440B (en) | 2008-12-11 | 2008-12-11 | Method for detecting assembly quality of cathode carbon block of electrolytic cell and test fixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101750440A true CN101750440A (en) | 2010-06-23 |
| CN101750440B CN101750440B (en) | 2012-11-21 |
Family
ID=42477736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100690321A Active CN101750440B (en) | 2008-12-11 | 2008-12-11 | Method for detecting assembly quality of cathode carbon block of electrolytic cell and test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101750440B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105177627A (en) * | 2015-10-22 | 2015-12-23 | 东北大学设计研究院（有限公司） | Anode assembly product quality control device and method |
| CN114199762A (en) * | 2022-01-14 | 2022-03-18 | 山东智谷碳素研究院有限公司 | Carbon block crack detection device and detection method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1100260C (en) * | 1998-12-25 | 2003-01-29 | 北京航空材料研究院 | Electrical measurement method for measuring conducting material structure |
| US6868350B2 (en) * | 2003-04-11 | 2005-03-15 | Therm-O-Disc, Incorporated | Method and apparatus for the detection of the response of a sensing device |
| CN101738421A (en) * | 2008-11-12 | 2010-06-16 | 中国铝业股份有限公司 | Method for testing assembling quality of cathode carbon block of electrolytic bath and test fixture |
-
2008
- 2008-12-11 CN CN2008100690321A patent/CN101750440B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105177627A (en) * | 2015-10-22 | 2015-12-23 | 东北大学设计研究院（有限公司） | Anode assembly product quality control device and method |
| CN114199762A (en) * | 2022-01-14 | 2022-03-18 | 山东智谷碳素研究院有限公司 | Carbon block crack detection device and detection method |
| CN114199762B (en) * | 2022-01-14 | 2023-10-24 | 山东智谷碳素研究院有限公司 | Carbon block crack detection device and detection method |
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| Publication number | Publication date |
|---|---|
| CN101750440B (en) | 2012-11-21 |
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