CN1932489A - Flame resisting fluorescent penetration flaw detection liquid and producing process thereof - Google Patents

Abstract

A fire retardant fluorescent detecting penetrating fluid for the metal, the tightness non-metal material and the products is composed of: 30%-70% of no smell kerosene, 10%-35% hydrogenation engine oils, 10%-16% dibasic alcohol, 7%-12% dibutyl phthalate, 2%-5% TSHN and 1%-2% Bayer fluorescent yellow. The invention can emit N2 because it dissolves TSHN to isolate with the O2; or the N2 is mixed with the combustible component to improve the flashing point, so it can resist the fire efficiently. Also the TSHN has less toxic and pollution to the environment and it doesn't contain the Fl, CL, S, Na and P.

Description

Flame resisting fluorescent penetration flaw detection liquid and preparation method thereof

Technical field

The present invention relates to the flaw detection on metal, compact nonmetallic material and product product surface thereof, particularly a kind of flame resisting fluorescent penetration flaw detection liquid that is used for the surface of the work flaw detection and preparation method thereof.

Background technology

The liquid penetrant examination method is a kind of important method in the modern Non-Destructive Testing, originates in the World War II initial stage, is used for war industry the earliest.Become at present in the modern manufacturing industry for improve the quality of products, service equipment safely, prevent a kind of important means of industry disaster accident.

This method can detect that material or surface of the work occur also in the extremely trickle fracture focus of bud.The rupture failure situation that promptly will take place for various machineries such as boats and ships, aircraft, bridge, boilers has prediction effect.

The ultimate principle that infiltration detects is with a kind of material (overwhelming majority is a liquid, and also having a spot of is gas and solid, so claim that generally it is a bleeding agent), infilters in the microscopic checks and goes; Wipe up with the cleaning fluid bleeding agent cleaning that the next door is unnecessary then, keep the bleeding agent in the crack as far as possible; Again imaging liquid is applied to surface of the work, this reagent can very fast volatilization and stay the solid film that one deck has strong absorption affinity, the bleeding agent that stays in the microscopic checks is sucked out and is enlarged, and makes it to demonstrate the place, position in crack.

Fluorescent dye is added in fluorescent penetration test exactly in bleeding agent, be development method early in the penetrating inspection, and fluorescent dye can send very strong fluorescence under special ultraviolet light.

Still use at present the fluorescent penetration test method to finish flaw detection task in aircraft manufacturing and the maintenance in China's air line in a large number, wherein the consumption of fluorescent penetrant is very big, and the fire fighting problem of fluorescent penetrant never well solves for a long time.

Someone once added fire retardant in fluorescent penetrant, to reduce combustibility, but the fire retardant that can adopt at present, contain elements such as a large amount of fluorine, chlorine, sulphur, phosphorus, sodium, halogen in its composition, though these fire retardants have played effect to fire-fighting, it is very big to the destruction of being visited workpiece; Also the someone adopts and does not fire or the organic solvent preparation fluorescent penetrant of low combustion property, but solvent that can be used to detect a flaw, that do not fire is of less types, has only several aliphatics halo derivatives, for example phenixin, dichlorodifluoromethan etc., and be hypertoxic solvent mostly; The somebody will add surfactant in the fluorescent penetrant, make it dissolve into portion of water, and with the flare point of reduction penetrating fluid, but the stability of meeting destruction penetrating fluid after the surfactant adding has also reduced its detection sensitivity simultaneously.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of flame resisting fluorescent penetration flaw detection liquid with fire retardation and preparation method thereof.

The present invention solves the problems of the technologies described above the technical scheme that is adopted:

A kind of flame resisting fluorescent penetration flaw detection liquid that is used for the product surface inspection its to form proportioning as follows:

Composition wt%

Odorlessness kerosene 30-70

Hydrogenation machine oil 10-35

Dibasic alcohol 10-16

Dibutyl phthalate 7-12

Foaming agent TSHN 2-5

Baeyer fluorescein 1-2

The preparation method of described flame resisting fluorescent penetration flaw detection liquid comprises the following steps:

1. select chemical pure raw material for use;

2. select the prescription of flame resisting fluorescent penetration flaw detection liquid, each raw material of weighing;

3. at normal temperatures, foaming agent TSHN, Baeyer fluorescein, dibutyl phthalate and the dibasic alcohol of institute's weighing mixed to add in the hollander mutually pull an oar, form diploma thing, beating time 〉=2 hour;

4. tasteless kerosene, hydrogenation machine oil are added in the reactor with described slurry, stir at normal temperatures more than 2 hours;

5. after stirring end, get described flame resisting fluorescent penetration flaw detection liquid through 200 purpose screen filtrations.

The technique effect of flame resisting fluorescent penetration flaw detection liquid of the present invention and preparation method thereof is:

Be dissolved with foaming agent TSHN in the flame resisting fluorescent penetration flaw detection liquid of the present invention, when running into higher temperature, decompose immediately, constantly emit a large amount of nitrogen, penetrating fluid is covered, isolated with airborne oxygen; Perhaps the vapor phase of combustible component is mixed in nitrogen and the fluorescent penetrant, and the shared ratio of combustible component is descended, and flash-point improves, and is nonflammable, so just can reach significant fire-retardant effect.In addition, the foaming agent TSHN that adds in fluorescent penetrant is humble poison, the minimum reagent of environmental pollution, does not also contain harmful elements such as fluorine, chlorine, sulphur, sodium, phosphorus.

Embodiment

Below in conjunction with specific embodiment the present invention is described in further detail.

The compositing formula of embodiment 1 described flame resisting fluorescent penetration flaw detection liquid is as follows:

Composition wt%

Odorlessness kerosene 70

Hydrogenation machine oil 10

Dibasic alcohol 10

Dibutyl phthalate 7

Foaming agent TSHN 2

Baeyer fluorescein 1

Its preparation steps is as follows:

1. select chemical pure raw material for use;

2. press the proportioning of described flame resisting fluorescent penetration flaw detection liquid, each raw material of weighing;

3. foaming agent TSHN, Baeyer fluorescein, the dibutyl phthalate of institute's weighing mixed mutually and add in the hollander with dibasic alcohol and pull an oar, form diploma thing, beating time 2.5 hours;

4. described tasteless kerosene, hydrogenation machine oil and described slurry are added in the reactor, stirred at normal temperatures 2.5 hours;

5. after stirring end, get described flame resisting fluorescent penetration flaw detection liquid through 200 purpose screen filtrations.

The compositing formula of embodiment 2 described flame resisting fluorescent penetration flaw detection liquids is as follows:

Composition wt%

Odorlessness kerosene 30

Hydrogenation machine oil 35

Dibasic alcohol 16

Dibutyl phthalate 12

Foaming agent TSHN 5

Baeyer fluorescein 2

The compositing formula of embodiment 3 described flame resisting fluorescent penetration flaw detection liquids is as follows:

Composition wt%

Odorlessness kerosene 50

Hydrogenation machine oil 23

Dibasic alcohol 12

Dibutyl phthalate 10

Foaming agent TSHN 3.5

Baeyer fluorescein 1.5

The configuration step of embodiment 2 and embodiment 3 is identical with embodiment 1, each proportioning components amount difference when just disposing, and in the layoutprocedure among the embodiment 2 the 3. the beating time in step be 2 hours, the 4. the mixing time in step be 2 hours; Among the embodiment 3 the 3. the beating time in step be 3 hours, the 4. the mixing time in step be 3 hours.

Flame resisting fluorescent penetration flaw detection liquid by the preparation of the composition proportion amount of embodiment 1, embodiment 2 and embodiment 3 is tested on the man-made fracture test plate (panel), test result shows: it is 5/1000mm that three kinds of test solutions can both detect width, the flash-point of penetration flaw detection liquid rises to 145 ℃ by existing 68 ℃, and does not change other key propertys of fluorescent penetrant.

Claims (2)

1. flame resisting fluorescent penetration flaw detection liquid that is used for metal, compact nonmetallic material and product surface inspection thereof is characterised in that its compositing formula is as follows:

Composition wt%

Odorlessness kerosene 30-70

Hydrogenation machine oil 10-35

Dibasic alcohol 10-16

Dibutyl phthalate 7-12

Foaming agent TSHN 2-5

Baeyer fluorescein 1-2

2. the preparation method of the described flame resisting fluorescent penetration flaw detection liquid of claim 1 is characterized in that this method comprises the following steps:

1. select chemical pure raw material for use;

2. select the prescription of flame resisting fluorescent penetration flaw detection liquid, each raw material of weighing;

3. at normal temperatures, foaming agent TSHN, Baeyer fluorescein, dibutyl phthalate and the dibasic alcohol of institute's weighing mixed to add in the hollander mutually pull an oar, form diploma thing, beating time 〉=2 hour;

4. tasteless kerosene, hydrogenation machine oil are added in the reactor with described slurry, stir at normal temperatures more than 2 hours;

5. after stirring end, get described flame resisting fluorescent penetration flaw detection liquid through 200 purpose screen filtrations.