CN105486739A - Apparatus and method for detecting fish-scaling resistance of steel for enamel based on principle of micro-differential pressure - Google Patents
Apparatus and method for detecting fish-scaling resistance of steel for enamel based on principle of micro-differential pressure Download PDFInfo
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Abstract
The invention relates to an apparatus and method for detecting fish-scaling resistance of steel for enamel based on principle of micro-differential pressure. A hydrogen evolution groove and a hydrogen diffusion groove are respectively arranged at the upper side and the lower side of a steel sample to be measured; a hole wall of the hydrogen diffusion groove is provided with a hydrogen diffusion liquid charging tube and a hydrogen diffusion liquid discharging tube; a thermometer is placed in the hydrogen evolution groove by a rubber stopper; a platinum electrode is placed in the hydrogen evolution groove through the rubber stopper, and the platinum electrode is connected to an anode of a DC constant-current constant-voltage instrument by a lead; the steel sample to be measured is connected to a cathode of the DC constant-current constant-voltage instrument by a lead; the hydrogen diffusion liquid discharging tube is connected to a micro-differential pressure sensor by a silica gel tube; the micro-differential pressure sensor is connected to a computer, and the computer connects a digital display touch screen. Computer data processing and the digital display touch screen are combined for facilitating instant inspection and storage of detection data, and visually displaying relation of hydrogen evolution quantity and time change.
Description
Technical field
The present invention relates to a kind of pick-up unit and method of Steel for enamel fish scaling resistance, especially a kind of pick-up unit and method adopting micro differential pressure principle.
Background technology
Enamelware is in manufacturing, to be dissolved in an atomic fashion in steel plate from the hydrogen in steel plate, enamel, enamel firing technique etc. and to spread in steel plate, a fraction of hydrogen is only had to be trapped by defects such as the hole in iron and steel, gap, dislocation, segregation, snotteres, major part atomic hydrogen diffuses in enamel coating and metal interface, and assemble with the form of hydrogen molecule, when a large amount of hydrogen assemble the interfacial pressure formed reach destroy enamel coating critical value time, enamel surfaces generation shape will be made as crescent moon, the quick-fried phenomenon of cataphracted squama.The quick-fried generation of squama has no omen, can occur immediately, also may occur after 24 hours after the application of slip, even within 1 month, occurs later, brings serious harm thus to enamelware.Therefore the anti-squama of correct Prediction and evaluation Steel for enamel is quick-fried, becomes the primary key of the manufacturing enterprise of Steel for enamel manufacturing enterprise and enamelware.
At present, domestic and international enterprise and institute evaluate the method mainly electrochemical method of the scaling resistance of Steel for enamel, as the electrochemical method of Devanathan and Stachurki design, current density when penetrating steel plate by detecting hydrogen evaluates the quick-fried susceptibility of squama of Steel for enamel.The galvanochemistry double-electrolyzer method that Devanthan invention uses, needs plating palladium or nickel when sample detects, and when plating palladium layers is uneven, can affect the test data accuracy of test hydrogen trap electric current.In addition, the steel plate required time that this method is used for test size thicker is long, and operating process is more loaded down with trivial details, and voltage noise etc. have impact to electrochemical apparatus measuring accuracy.Based on galvanochemistry double-electrolyzer method principle, existing ISO17081:2008 standard and GB/T29515:2013 standard at present.The U.S., Japan and Korea S then evaluate enamel sheet fish scaling resistance based on ISO17081:2008 standard.GB/T29515:2013 standard is then the standard of the evaluation enamel sheet fish scaling resistance that China formulates.
Except current density method of testing, adopt the method for electrolysis liberation of hydrogen, weigh hydrogen time of penetration by the liquid level collecting the hydrogen volume conversion penetrating steel plate.As European countries extensively adopt EN10209:2013 standard.The method adopts grating sensor to detect the photosignal of colored liquid liquid level in kapillary, and is realized the relation of liquid level and time by computing machine.But the problem of this method is liquid level detection device to involve great expense, in kapillary, the depth of colored liquid color and intensity of illumination all can affect grating sensor and catch liquid level accuracy in addition.
Summary of the invention
The present invention will provide a kind of Steel for enamel scaling resistance pick-up unit based on micro differential pressure principle and method, based on the method for electrolysis liberation of hydrogen, little differential pressure sensor is adopted to replace grating sensor, the liberation of hydrogen gas pressure difference in steel is measured with little differential pressure sensor, and convert electric signal to, by computer Simulation calculation, convert liquid level to, carry out the judgement that colored liquid liquid level in kapillary measured by alternative grating sensor; The method operation is easier, good stability, detection accuracy are high.
For achieving the above object, technical scheme of the present invention is: a kind of Steel for enamel scaling resistance pick-up unit based on micro differential pressure principle, comprise switch board, computing machine, little differential pressure sensor, digital display touch-screen, direct current continuous current constant voltage instrument, silicone tube, platinum electrode, thermometer, rubber plug, liberation of hydrogen groove, epoxy resin board geometrical clamp, expand hydrogen groove, rubber plug, hydrogen trap liquid injecting tube, hydrogen trap liquid delivery line, described liberation of hydrogen groove and expansion hydrogen groove are separately positioned on the upper and lower both sides of steel sample to be measured; Described expansion hydrogen slotted eye wall is provided with hydrogen trap liquid injecting tube and hydrogen trap liquid delivery line; Thermometer is placed in liberation of hydrogen groove by rubber plug; Platinum electrode is placed in liberation of hydrogen groove through rubber plug, and platinum electrode is connected by the positive pole of wire with direct current continuous current constant voltage instrument; Steel sample to be measured is connected by the negative pole of wire with direct current continuous current constant voltage instrument; Described hydrogen trap liquid delivery line connects little differential pressure sensor by silicone tube; Little differential pressure sensor is connected with computing machine, and computing machine connects digital display touch-screen.
Described little differential pressure sensor and computing machine are placed in switch board 1; Digital display touch-screen is positioned at the upper epidermis of switch board.
Described hydrogen trap liquid injecting tube outside diameter is 5mm, and interior circular diameter is 1mm; Hydrogen trap liquid delivery line outside diameter is 5mm, and interior circular diameter is 0.5mm.
The hole wall of described expansion hydrogen groove is connected by rubber stopper seal with between hydrogen trap liquid injecting tube.
Described steel sample to be measured and liberation of hydrogen groove and expanding between hydrogen groove is fixed by epoxy resin board geometrical clamp and fastening bolt, blend rubber washer sealing.
Based on a Steel for enamel scaling resistance detection method for micro differential pressure principle, concrete steps are:
(1) by steel sample fixing seal to be measured at liberation of hydrogen groove with expand between hydrogen groove,
(2) the built-in full distilled water of hydrogen groove is expanded, bubble-free;
(3) the built-in electrolytic solution of liberation of hydrogen groove, then puts into thermometer and platinum electrode;
(4) open computing machine, digital display touch-screen will expand hydrogen groove force value return-to-zero, when Computer display pressure signal is steady, start experiment;
(5) the liberation of hydrogen draught head in steel sample to be measured is measured with little differential pressure sensor, convert electric signal to and be sent to computing machine, computing machine converts the signal into the liquid level evaluation method adopting EN10209:2013 standard, demonstrates liberation of hydrogen quantity and time-varying relationship by liquid level and time curve;
(6) digital display touch-screen digital display screen display pressure signal reaches maximal value, when namely liquid level time changing curve is in linear relation, stops Experiment Data Records and stops experiment;
(7) experimental data of preserving is processed, obtain the hydrogen infiltration TH time under experimental temperature, and adopt EN10209:2013 standard evaluation Steel for enamel fish scaling resistance.
The invention has the beneficial effects as follows:
The present invention adopts little differential pressure sensor, and little differential pressure sensor, by expanding delivery line and silicone tube connection on hydrogen slotted eye wall, is measured the liberation of hydrogen gas differential pressure value of Steel for enamel to be measured in electrolytic solution, and is converted to electric signal, transmit computing machine.Computing machine carries out signal conversion by the specific software of design, little differential pressure sensor measured value is converted to the liquid level of EN10209:2013 standard, to facilitate the scaling resistance adopting EN10209:2013 standard evaluation Steel for enamel.
Measure for realizing little differential pressure sensor, the present invention devises the expansion hydrogen groove of hole wall with liquid injecting tube and delivery line, and ascending pipe outside diameter is 5mm, and interior circular diameter is 1mm; Delivery line outside diameter is 5mm, and interior circular diameter is 0.5mm, for the silicone tube connection little differential pressure sensor of standard.
The present invention adopts computer digital animation and digital display Touch Screen, convenient instant inspection and the storage detecting data, and shows liberation of hydrogen quantity and time-varying relationship intuitively.
Accompanying drawing explanation
Fig. 1 is the structural representation of the Steel for enamel scaling resistance pick-up unit based on micro differential pressure principle of the present invention;
Fig. 2 adopts the Steel for enamel scaling resistance pick-up unit based on micro differential pressure principle to detect the liquid level and the curve map of time obtained.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Figure 1, a kind of Steel for enamel scaling resistance pick-up unit based on micro differential pressure principle, is made up of part of detecting, power unit, experimental section and ferrous materials sample to be measured etc.
Part of detecting is made up of switch board 1, computing machine 2, little differential pressure sensor 3, digital display touch-screen 4, and power supply is direct current continuous current constant voltage instrument 5.Experimental section is made up of silicone tube 6, platinum electrode 7, thermometer 8, rubber plug 9, liberation of hydrogen groove 10, epoxy resin board geometrical clamp 11, expansion hydrogen groove 13, rubber plug 14, hydrogen trap liquid injecting tube 15, hydrogen trap liquid delivery line 16, fastening bolt 17.
Expansion hydrogen groove 13 hole wall of part of detecting is provided with hydrogen trap liquid injecting tube 15 and hydrogen trap liquid delivery line 16; Hydrogen trap liquid injecting tube 15 outside diameter is 5mm, and interior circular diameter is 1mm; Hydrogen trap liquid delivery line 16 outside diameter is 5mm, and interior circular diameter is 0.5mm.Liberation of hydrogen groove 10 and expansion hydrogen groove 13 lay respectively at steel sample about 12 both sides to be measured; Thermometer 8 is placed in liberation of hydrogen groove 10 by rubber plug 9; Platinum electrode 7 is placed in liberation of hydrogen groove 10 through rubber plug 9, and platinum electrode 7 is connected by the positive pole of wire with direct current continuous current constant voltage instrument 5; Steel sample 12 to be measured is positioned over liberation of hydrogen groove 10 and expands between hydrogen groove 13, is fixed, with rubber ring seal steel sample 12 to be measured by epoxy resin board geometrical clamp 11 and fastening bolt 17; Steel sample 12 to be measured is connected by the negative pole of wire with direct current continuous current constant voltage instrument 5; Expanding ascending pipe 15 on hydrogen groove 13 hole wall adopts rubber plug 14 to seal; Expand hydrogen trap liquid delivery line 16 on hydrogen groove 13 hole wall to be connected with little differential pressure sensor 3 by silicone tube 6; Little differential pressure sensor 3 is connected with computing machine 2, and little differential pressure sensor 3 and computing machine 2 are placed in switch board 1; Digital display touch-screen 4 is positioned at the upper epidermis of switch board 1.
Steel for enamel scaling resistance detection method based on micro differential pressure principle of the present invention, concrete steps are:
(1) by steel sample 12 fixing seal to be measured at liberation of hydrogen groove 10 with expand between hydrogen groove 13,
(2) the built-in full distilled water of hydrogen groove 13 is expanded, bubble-free;
(3) the built-in electrolytic solution of liberation of hydrogen groove 10, then puts into thermometer 8 and platinum electrode 7;
(4) open computing machine 2, digital display touch-screen 4 will expand hydrogen groove 13 force value return-to-zero, computing machine 2 show pressure signal steady time start test;
(5) the liberation of hydrogen draught head in steel sample 12 to be measured is measured with little differential pressure sensor 3, convert electric signal to and be sent to computing machine 2, computing machine 2 converts the signal into the liquid level evaluation method adopting EN10209:2013 standard, demonstrates liberation of hydrogen quantity and time-varying relationship by liquid level and time curve;
(6) digital display touch-screen 4 digital display screen display pressure signal reaches maximal value, namely time liquid level time changing curve (Fig. 2) in linear relation, stops Experiment Data Records and stops experiment;
(7) experimental data of preserving is processed, obtain the hydrogen infiltration TH time under experimental temperature, and adopt EN10209:2013 standard evaluation Steel for enamel fish scaling resistance.
Method of the present invention can test the enamel sheet between thickness 0.1 ~ 10.0mm.
Claims (6)
1. the Steel for enamel scaling resistance pick-up unit based on micro differential pressure principle, comprise switch board (1), computing machine (2), little differential pressure sensor (3), digital display touch-screen (4), direct current continuous current constant voltage instrument (5), silicone tube (6), platinum electrode (7), thermometer (8), rubber plug (9), liberation of hydrogen groove (10), epoxy resin board geometrical clamp (11), expand hydrogen groove (13), rubber plug (14), hydrogen trap liquid injecting tube (15), hydrogen trap liquid delivery line (16), it is characterized in that: described liberation of hydrogen groove (10) and expansion hydrogen groove (13) are separately positioned on steel sample to be measured (12), lower both sides, described expansion hydrogen groove (13) hole wall is provided with hydrogen trap liquid injecting tube (15) and hydrogen trap liquid delivery line (16), thermometer (8) is placed in liberation of hydrogen groove (10) by rubber plug (9), platinum electrode (7) is placed in liberation of hydrogen groove (10) through rubber plug (9), and platinum electrode (7) is connected by the positive pole of wire with direct current continuous current constant voltage instrument (5), steel sample to be measured (12) is connected by the negative pole of wire with direct current continuous current constant voltage instrument (5), described hydrogen trap liquid delivery line (16) connects little differential pressure sensor (3) by silicone tube (6), little differential pressure sensor (3) is connected with computing machine (2), and computing machine (2) connects digital display touch-screen (4).
2. the Steel for enamel scaling resistance pick-up unit based on micro differential pressure principle according to claim 1, is characterized in that: described little differential pressure sensor 3 and computing machine (2) are placed in switch board 1; Digital display touch-screen (4) is positioned at the upper epidermis of switch board (1).
3. the Steel for enamel scaling resistance pick-up unit based on micro differential pressure principle according to claim 1, is characterized in that: described hydrogen trap liquid injecting tube (15) outside diameter is 5mm, and interior circular diameter is 1mm; Hydrogen trap liquid delivery line (16) outside diameter is 5mm, and interior circular diameter is 0.5mm.
4. the Steel for enamel scaling resistance pick-up unit based on micro differential pressure principle according to claim 1, is characterized in that: be tightly connected by rubber plug (14) between described expansion hydrogen groove (13) hole wall and hydrogen trap liquid injecting tube (15).
5. the Steel for enamel scaling resistance pick-up unit based on micro differential pressure principle according to claim 1, it is characterized in that: described steel sample to be measured (12) and liberation of hydrogen groove (10) and expand between hydrogen groove (13) fixing by epoxy resin board geometrical clamp (11) and fastening bolt (17), blend rubber washer sealing.
6. application rights requires a detection method for the Steel for enamel scaling resistance pick-up unit based on micro differential pressure principle described in any one of 1-5, and it is characterized in that, concrete steps are:
1) by steel sample to be measured (12) fixing seal at liberation of hydrogen groove (10) with expand between hydrogen groove (13),
2) the built-in full distilled water of hydrogen groove (13) is expanded, bubble-free;
3) liberation of hydrogen groove (10) built-in electrolytic solution, then puts into thermometer (8) and platinum electrode (7);
4) open computing machine (2), above will expand hydrogen groove (13) force value return-to-zero at digital display touch-screen (4), when computing machine (2) display pressure signal is steady, start experiment;
5) the liberation of hydrogen draught head in steel sample to be measured (12) is measured with little differential pressure sensor (3), convert electric signal to and be sent to computing machine (2), computing machine (2) converts the signal into the liquid level evaluation method adopting EN10209:2013 standard, demonstrates liberation of hydrogen quantity and time-varying relationship by liquid level and time curve;
6) digital display touch-screen (4) digital display screen display pressure signal reaches maximal value, when namely liquid level time changing curve is in linear relation, stops Experiment Data Records and stops experiment;
7) experimental data of preserving is processed, obtain the hydrogen infiltration TH time under experimental temperature, and adopt EN10209:2013 standard evaluation Steel for enamel fish scaling resistance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510853714.1A CN105486739B (en) | 2015-11-30 | 2015-11-30 | Steel for enamel scaling resistance detection device and method based on micro differential pressure principle |
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| CN201510853714.1A CN105486739B (en) | 2015-11-30 | 2015-11-30 | Steel for enamel scaling resistance detection device and method based on micro differential pressure principle |
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| CN105486739B CN105486739B (en) | 2018-06-26 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525908A (en) * | 2017-06-28 | 2017-12-29 | 柳州钢铁股份有限公司 | Water heater liner cold rolling glassed steel fish scaling resistance detection method |
| CN110095523A (en) * | 2018-01-29 | 2019-08-06 | 宝山钢铁股份有限公司 | A method of the prediction quick-fried occurrence probability size of enamelware squama |
| CN111650258A (en) * | 2020-06-01 | 2020-09-11 | 上海应用技术大学 | Double-electrolysis experiment detection device and method for scaling property of enamel steel |
| CN112481664A (en) * | 2020-11-10 | 2021-03-12 | 上海应用技术大学 | Non-toxic electrolyte for detecting fish scaling resistance of enamel steel and preparation method thereof |
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Patent Citations (4)
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525908A (en) * | 2017-06-28 | 2017-12-29 | 柳州钢铁股份有限公司 | Water heater liner cold rolling glassed steel fish scaling resistance detection method |
| CN107525908B (en) * | 2017-06-28 | 2020-07-28 | 柳州钢铁股份有限公司 | Method for detecting anti-scaling performance of cold-rolled enamel steel for water heater liner |
| CN110095523A (en) * | 2018-01-29 | 2019-08-06 | 宝山钢铁股份有限公司 | A method of the prediction quick-fried occurrence probability size of enamelware squama |
| CN110095523B (en) * | 2018-01-29 | 2021-05-14 | 宝山钢铁股份有限公司 | Method for predicting scale explosion occurrence probability of enamel product |
| CN111650258A (en) * | 2020-06-01 | 2020-09-11 | 上海应用技术大学 | Double-electrolysis experiment detection device and method for scaling property of enamel steel |
| CN112481664A (en) * | 2020-11-10 | 2021-03-12 | 上海应用技术大学 | Non-toxic electrolyte for detecting fish scaling resistance of enamel steel and preparation method thereof |
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