CN104007000A - Descaling dye penetration testing agent and preparation method thereof - Google Patents
Descaling dye penetration testing agent and preparation method thereof Download PDFInfo
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- CN104007000A CN104007000A CN201410255652.XA CN201410255652A CN104007000A CN 104007000 A CN104007000 A CN 104007000A CN 201410255652 A CN201410255652 A CN 201410255652A CN 104007000 A CN104007000 A CN 104007000A
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- scale removal
- detection agent
- tween
- phosphoric acid
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Abstract
The invention discloses a descaling dye penetration testing agent, and belongs to the technical field of a nondestructive testing method for testing defects of surface opening based on capillary action principles. The testing agent is prepared from tony red IV, naphthalene, aviation kerosene, tween-60, triethanolamine oleic soap, dimethylnaphthalene and phosphoric acid; the mass volume of tony red IV to naphthalene to phosphoric acid to the descaling dye penetration testing agent is 1g/100ml to 1g/100ml to 0.8g/100ml; the volume percentages of aviation kerosene, tween-60, triethanolamine oleic soap and dimethylnaphthalene in the descaling dye penetration testing agent are respectively 65 percent, 10 percent, 10 percent and 15 percent. The descaling dye penetration testing agent has the advantages of improving the sensitivity of penetration test of boiler drums, ensuring the reliability of safe operation, prolonging the service life of boilers, reducing the maintenance workload of the boilers and lowering the maintenance capitals.
Description
Technical field
The invention belongs to a kind of lossless detection method technical field taking capillary action principle as basic inspection Surface-breaking defect, be specifically related to a kind of scale removal dye penetrating detection agent and preparation method thereof.
Background technology
Infiltration detects (penetrationtesting, dummy suffix notation is PT), claims again permeation flaw detection, is a kind of lossless detection method taking capillary action principle as basic inspection Surface-breaking defect.This method is the one in five kinds of conventional lossless detection methods (ray detection, ultrasound examination, magnetic detect, permeate detection, EDDY CURRENT), is a Comprehensive Science technology.The same with other lossless detection methods, infiltration detect be also the usability of not damaging detected object be prerequisite, using physics, chemistry, material science and engineering science theory is basis, various construction materials, parts and product are effectively checked, so as to evaluating their integrality, continuity and safe reliability.It is the important means that realizes quality control in product manufacture, saves material, improves technique, raises labour productivity that infiltration detects, and is also means indispensable in plant maintenance.
Boiler is widely used special equipment in industrial and agricultural production and people's lives, is one of Thermal Equipment of producing steam or hot water, and its safe operation is significant.Drum in boiler is to bear the air pressure of drum generation and a kind of commercial unit of level pressure, is a kind of most important pressure parts.Drum is positioned at boiler top, is a columnar pressure resistant vessel, under it, is water, and top is vapour, and it accepts the water of economizer, jointly forms water-flow circuit again with downtake, header, water-cooling wall simultaneously.In the time that boiler feed water is nonconforming, boiler heating surface will be tied and scale, and incrustation scale affects the detection of boiler-steam dome, cannot guarantee safe operation of the boiler.Drum inner structure is complicated and install morely, and due to the existence of incrustation scale in drum, mechanical grinding is difficult to eliminate clean.Incrusted deposit is at Surface-breaking defect, stopped that infiltration detection agent infiltrates defect, thereby can not find to be blocked in the defect below incrustation scale, causes undetectedly, buried boiler operatiopn potential safety hazard.
It is clean that non-special bleeding agent necessarily requires tested surface of the work polishing on the market, expose metallic luster, and sensitivity is lower.Drum inner structure is complicated and install morely, and due to the existence of incrustation scale in drum, mechanical grinding is difficult to eliminate clean.Incrusted deposit is at Surface-breaking defect, stopped that infiltration detection agent infiltrates defect, thereby can not find to be blocked in the defect below incrustation scale, causes undetectedly, buried boiler operatiopn potential safety hazard.In addition, before inspection, must, by large area pickling, eliminate incrustation scale.When acid washing method is improper or pickling frequently can make drum that drum blister occurs, after excavation filling mend, should use its suitable step-down, just can guarantee safety.So, for requiring the unit that vapor pressure is higher, the boiler that more renews of just having to.Some unit also can affect product quality because vapor pressure is too low, even occur substandard products, directly affects economic benefit.Some boiler is because drum blister area is excessive and distortion seriously has to scrap processing; Although some boilers can be repaired, too high, valueless because of the cost of repairs, also have to scrap.
Shorten boiler serviceable life.General boiler serviceable life, under regular service condition, continuously about 20 years of operation.Does not but why the boiler of present most of applying unit reach this life-span? its reason is many-sided, and one of them just has the impact of the pickling before inspection.Cause corrosion of metal, shorten boiler serviceable life.
And the maintenance workload before drum inspection is large, needs substantial contribution support.Before drum inspection, must carry out dirty removing processing, guarantee quality inspection, guarantees safety and economic operation like this.Remove incrustation scale and just must adopt chemical agent, as acid, alkali etc.Incrustation scale knot is thicklyer raw, and the medicament of consumption is just more, and input is also just more.For example, if 3 millimeters of average foulings of 1T/H type boiler, except dirt once just needs 0.5 ton of medicament, add labour cost, just need 2500 yuan of left and right of fund.According to the difference of boiler tonnage, tonnage increases, and required medicament just increases by 1/3rd, and fund is corresponding increase also.When drum drum blister is mended by replacing a damaged part, require highly, the time is long, constructs more difficult.Once large bulging blister excavation filling mend, will expend 1 to 20,000 yuan of left and right of fund.In a word, no matter be that chemical cleaning or purchase material are repaired, all to spend a large amount of human and material resources and financial resources.
Summary of the invention
Due to the special infiltration detection agent lacking in the market for boiler-steam dome, the object of the invention is to, by the formula to bleeding agent and composition of scale research, provides a kind of scale removal dye penetrating detection agent, is specifically designed to the infiltration detection agent in boiler-steam dome.
Another object of the present invention has been to disclose the preparation method of above-mentioned scale removal dye penetrating detection agent.
The object of the invention is to be achieved through the following technical solutions:
A kind of scale removal dye penetrating detection agent, wherein, described scale removal dye penetrating detection agent is by following material: Sudan IV, how, how aviation kerosene, Tween-60, trihydroxy ethylamine oleate soap, dimethyl form with phosphoric acid;
Wherein Sudan IV, mass volume ratio how and between phosphoric acid and scale removal dye penetrating detection agent are: Sudan IV is 1g/100ml, how for 1g/100ml, phosphoric acid are 0.8g/100ml;
Wherein aviation kerosene, Tween-60, trihydroxy ethylamine oleate soap and dimethyl how the percent by volume in scale removal dye penetrating detection agent is respectively that aviation kerosene is 65%, Tween-60 is 10%, trihydroxy ethylamine oleate soap be 10% and dimethyl how to be 15%.
Described in technique scheme, the preparation method of scale removal dye penetrating detection agent, comprises the steps:
(1), according to described ratio take raw material Sudan IV, how, aviation kerosene, Tween-60, trihydroxy ethylamine oleate soap, dimethyl how and phosphoric acid;
(2), by Sudan IV with how to be placed in container glass, more how dimethyl is slowly poured into, pour into while stir, allow Sudan IV and how to be soaked in dimethyl how in, and stir and all use;
(3), pour into successively in the following order: aviation kerosene, Tween-60, trihydroxy ethylamine oleate soap, phosphoric acid; Often add a kind of raw material, all stir, obtain scale removal dye penetrating detection agent.
The principle of work of scale removal dye penetrating detection agent of the present invention is to use this bleeding agent on test material surface, and make it remain to the default time limit (time of penetration that standard specifies at body surface, be greater than 10 minutes), this bleeding agent is the colored liquid that can recognize under normal illumination.This bleeding agent dissolving incrustation scale enters the slight crack of material surface opening simultaneously due to " capillary action ".Capillary action occurs all the time in bleeding agent stop process, until the incrustation scale and the unnecessary bleeding agent that dissolve are cleaned completely.Now certain developer is applied to tested material surface, infiltrates through slight crack and make it painted, and then manifest.The testing staff who possesses corresponding qualification can manifest vestige and resolves this.
The present invention has following beneficial effect:
1, scale removal dye penetrating detection agent of the present invention is not very high to the tested surface requirements of drum, can be a small amount of there is incrustation scale.
2, scale removal dye penetrating detection agent of the present invention has higher detection sensitivity to the detection of boiler-steam dome, causes undetected possibility less, can guarantee safe operation of the boiler.
3, adopt scale removal dye penetrating detection agent of the present invention before detection without large area pickling, reduce drum pickling number of times, reduce the possibility of hydrogen bulge, prolonged boiler serviceable life, reduce boiler maintenance workload, save maintenance fund.
Brief description of the drawings:
1, Fig. 1 is Type B stainless steel chromium plating test block;
2, Fig. 2 is the experimental result that Type B stainless steel chromium plating test block checks the sensitivity of scale removal dye penetrating detection agent.
Embodiment:
For making technical scheme of the present invention be convenient to understand, below in conjunction with concrete test example, a kind of scale removal dye penetrating of the present invention detection agent and preparation method thereof is further described.
embodiment 1:a kind of scale removal dye penetrating detection agent:
A kind of scale removal dye penetrating detection agent, is made up of following material: Sudan IV, how, aviation kerosene, Tween-60, trihydroxy ethylamine oleate soap, dimethyl how and phosphoric acid;
Wherein Sudan IV, mass volume ratio how and between phosphoric acid and scale removal dye penetrating detection agent are: Sudan IV is 1g/100ml, how for 1g/100ml, phosphoric acid are 0.8g/100ml;
Wherein aviation kerosene, Tween-60, trihydroxy ethylamine oleate soap and dimethyl how the percent by volume in scale removal dye penetrating detection agent is respectively that aviation kerosene is 65%, Tween-60 is 10%, trihydroxy ethylamine oleate soap be 10% and dimethyl how to be 15%.
The preparation process of above-mentioned scale removal dye penetrating detection agent is as follows:
(1), according to aforementioned proportion take raw material Sudan IV, how, aviation kerosene, Tween-60, trihydroxy ethylamine oleate soap, dimethyl how and phosphoric acid;
(2), by Sudan IV with how to be placed in container glass, more how dimethyl is slowly poured into, pour into while stir, allow Sudan IV and how to be soaked in dimethyl how in, and stir and all use;
(3), pour into successively in the following order: aviation kerosene, Tween-60, trihydroxy ethylamine oleate soap, phosphoric acid; Often add a kind of raw material, all need to stir, obtain scale removal dye penetrating detection agent.
Scale removal dye penetrating detection agent of the present invention should be without precipitation caking thing in preparation process, as find that there is precipitation caking thing can heating water bath, be advisable but be no more than 40 DEG C.Pouring dimethyl into toward Sudan IV with how how time, prevent that caking from being crucial; In preparation process, need to be stirred to raw material always and dissolve completely, various solvents are all with mixing, and so far scale removal dye penetrating detection agent has been prepared.
The testing process of scale removal dye penetrating detection agent of the present invention is:
The unnecessary scale removal dye penetrating detection agent of prerinse → apply scale removal dye penetrating detection agent (incrustation scale is dissolved in infiltration simultaneously) → remove and incrustation scale → apply developer → inspection → cleaning afterwards.
Concrete detecting step is as follows:
1, prerinse: with clean-out system cleaning Type B stainless steel chromium plating test block, clean up, and subsequent drying;
2, apply scale removal dye penetrating detection agent: scale removal dye penetrant is brushed or is sprayed at test block surface, and when spraying, nozzle is advisable apart from test block surface 20～30mm, infiltration temperature 15～50 degree, time of penetration must not be less than 10 minutes; In whole time of penetration, bleeding agent must soak whole test block surfaces.
3, remove unnecessary scale removal dye penetrating detection agent and incrustation scale: reach after the time of penetration of regulation, first wipe the unnecessary scale removal dye penetrant of test block surface with dry cloth, then clean with the cloth that speckles with clean-out system; In cleaning, then dry test block surface with clean cloth.
4, apply developer: test block surface is brushed or be sprayed to developer, and developer should be thin and even, and thickness 0.05～0.07mm is advisable; When spraying, nozzle is not too near apart from test block surface, and general 300～400mm is advisable left and right, and spraying direction and test block surface angle is 30～40 degree.
5, inspection: after time of developing finishes, can check under white light.Check Type B stainless steel chromium plating test block surface, observe rayed split and show whether can show, if show, can illustrate that this bleeding agent and whole operation meet the requirements, if desired, available 5～10 times of magnifieres are observed.
6, rear cleaning: clean up test block surface bleeding agent and photographic developer.
Adopt embodiment 1 to prepare scale removal dye penetrating detection agent scale removal dye penetrating detection agent sensitivity with the Type B stainless steel chromium plating test block inspection preparation shown in Fig. 1 according to above-mentioned testing process of gained, observing Type B test block rayed split shows, observe and determine that the scale removal dye penetrating detection agent of preparation could use, as rayed split can all show, illustrate that this bleeding agent can use.In Fig. 1, mark l
2for the front view of test block, mark l
1and l
3be the outboard profile of test block, wherein l
1for test block thickness 3～4mm, l
2for test block length 100～130mm, l
3for test block width 30～40mm.
The results are shown in Figure shown in 2, the rayed split in Type B stainless steel chromium plating test block can all show.
The above, it is only preferred embodiment of the present invention, not the present invention is done to any formal and substantial restriction, all those skilled in the art, do not departing within the scope of technical solution of the present invention, when utilizing disclosed above technology contents, and the equivalent variations of a little change of making, modification and differentiation is equivalent embodiment of the present invention; Meanwhile, the change of any equivalent variations that all foundations essence technology of the present invention is done above embodiment, modification and differentiation, all still belong in the scope of technical scheme of the present invention.
Claims (2)
1. a scale removal dye penetrating detection agent, is characterized in that, described scale removal dye penetrating detection agent is by following material: Sudan IV, how, how aviation kerosene, Tween-60, trihydroxy ethylamine oleate soap, dimethyl form with phosphoric acid;
Wherein Sudan IV, mass volume ratio how and between phosphoric acid and scale removal dye penetrating detection agent are: Sudan IV is 1g/100ml, how for 1g/100ml, phosphoric acid are 0.8g/100ml;
Wherein aviation kerosene, Tween-60, trihydroxy ethylamine oleate soap and dimethyl how the percent by volume in scale removal dye penetrating detection agent is respectively that aviation kerosene is 65%, Tween-60 is 10%, trihydroxy ethylamine oleate soap be 10% and dimethyl how to be 15%.
2. the preparation method of scale removal dye penetrating detection agent described in claim 1, comprises the steps:
(1), according to described ratio take raw material Sudan IV, how, aviation kerosene, Tween-60, trihydroxy ethylamine oleate soap, dimethyl how and phosphoric acid;
(2), by Sudan IV with how to be placed in container glass, more how dimethyl is slowly poured into, pour into while stir, allow Sudan IV and how to be soaked in dimethyl how in, and stir;
(3), pour into successively in the following order: aviation kerosene, Tween-60, trihydroxy ethylamine oleate soap, phosphoric acid; Often add a kind of raw material, all stir, obtain scale removal dye penetrating detection agent.
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| CN201410255652.XA CN104007000A (en) | 2014-06-11 | 2014-06-11 | Descaling dye penetration testing agent and preparation method thereof |
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| CN201410255652.XA CN104007000A (en) | 2014-06-11 | 2014-06-11 | Descaling dye penetration testing agent and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693541A (en) * | 2020-06-22 | 2020-09-22 | 苏州聚友保利检测科技有限公司 | Solvent-removing type dye penetrant flaw detector and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693541A (en) * | 2020-06-22 | 2020-09-22 | 苏州聚友保利检测科技有限公司 | Solvent-removing type dye penetrant flaw detector and preparation method thereof |
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Application publication date: 20140827 |
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