CN1932485A - High-temperature type dye check penetration liquid and producing process thereof - Google Patents

Abstract

A high temperature colored detecting penetrating fluid for the metal, the tightness non-metal material and the products is composed of: the di-iso-octylester biphthalate 30-68%, the strychnine 20-42%, the colloid carbofrax 10-20%, the double azored 1-4% and the haematein 1-4%. So it can detect the product surface of the 150DEG C-220DEG C and get the crack of 0.001mm width and 1/60 of the width/depth when it is used with the detecting developer and the colored cleaning solution.

Description

High-temperature type dye check penetration liquid and preparation method thereof

Technical field

The present invention relates to the flaw detection on metal, compact nonmetallic material and product surface thereof, particularly a kind of high-temperature type dye check penetration liquid that is used for material or 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 product surface occurs also in the extremely trickle fracture focus of bud.

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.

Existing penetrant flaw detection agent is made up of penetrating fluid, cleaning fluid and imaging liquid, through development for a long time, the employed penetrant flaw detection agent of liquid penetration test that has occurred multiple model in the world, but this class penetrant flaw detection agent, can only detect surface temperature and be in-10 ℃---70 ℃ workpiece.When existing penetrant flaw detection agent is applied to the high temperature surface, can seethes with excitement immediately, bubble, evaporate, smolder, what have also can burn, can't operate as normal.But the high temperature workpiece exists really real-life.For example: carry the pipeline of high-temperature steam and high temperature fluid, boiler in the work and pressure vessel, near the workpiece that the parts after the hot-working just, electric welding weldment soon are with being in thermal source etc.

Some workpiece must at high temperature carry out penetrating inspection, and check that again reason is as follows the temperature of workpiece can't be dropped to below 70 ℃ the time:

1. some power house, particularly nuclear power station, oceangoing voyage boats and ships and chemical industry facility, they Once you begin move, can not stop, but their boiler, pipeline waited until certain time limit and needed maintenance to have only some position of determining to have and just locally after the problem stop work, repair or change parts midway.The inspection of comprehensively search property can only be under the condition of high temperature of carrying labour at them to be carried out;

2. some hot-working parts is in order to guarantee the quality of following process, process inspection in the middle of need doing, if cooling, may need the long time cycle, also to heat up again after checking and continue processing, so not only waste energy, also may be in the process of temperature one rise and one drop, change the metallographic structure of material, damaged their mechanical property;

3. some pressure vessel has " heat leak " situation to exist, in other words, it is under high-temperature condition, because of making microscopic checks, radial pressure opens, can leak fluent meterial wherein, after its cooling, microfracture is closed again, leak very not obviously, such source of leaks has only at high temperature that check could be effectively.

Summary of the invention

The technical problem to be solved in the present invention is to overcome deficiency of the prior art, provides a kind of high-temperature type dye check penetration liquid that at high temperature carries out permeation flaw detection and preparation method thereof to satisfy the needs of high temperature flaw detection.

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

A kind of high-temperature type dye check penetration liquid that is used for product surface inspection under the high temperature, by phthalic acid di-isooctyl, strychnine, colloid silit, bisdiazo is red and haematein is formulated, its compositing formula is as follows:

Composition wt%

Phthalic acid di-isooctyl 30-68

Strychnine 20-42

Colloid silit 10-20

The red 1-4 of bisdiazo

Haematein 1-4

The preparation method of described high-temperature type dye check penetration liquid comprises the following steps:

1. select technical pure or chemical pure raw material for use;

2. select the proportioning of high-temperature type dye check penetration liquid, each raw material of weighing;

The phthalic acid di-isooctyl of 3. that the bisdiazo of institute's weighing is red, haematein, colloid silit and part amount mixes mutually, and the making beating that is in harmonious proportion forms diploma thing;

4. remaining solvent is added described slurry, place in the heating reactor and stir, slowly be warming up to 300 ℃ in the whipping process, stop heating then, be stirred to 200 ℃ and stop to stir;

5. filter, filtered fluid is cooled to room temperature, promptly gets described high-temperature type dye check penetration liquid;

6. described high-temperature type dye check penetration liquid is in bulk or fill into the aerosol jar.

The technique effect of high-temperature type dye check penetration liquid of the present invention and preparation method thereof is:

This penetrating fluid is used with high-temperature type dye check developer and high-temperature type dye check cleaning liquid, and can finish surface temperature is the flaw detection on 150～220 ℃ product surface, and can detect width is 0.001mm, and breadth depth ratio is 1/60 crack.

Embodiment

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

High-temperature type dye check penetration liquid of the present invention by phthalic acid di-isooctyl, strychnine, colloid silit, bisdiazo is red and haematein is formulated.

The composition proportion of embodiment 1 described high-temperature type dye check penetration liquid is as follows:

Composition wt%

Phthalic acid di-isooctyl 30

Strychnine 42

Colloid silit 20

Bisdiazo red 4

Haematein 4

Its preparation steps is as follows:

1. select commercially pure raw material for use;

2. press described high-temperature type dye check developer proportioning, each raw material of weighing;

The phthalic acid di-isooctyl of 3. that the bisdiazo of institute's weighing is red, haematein, colloid silit, strychnine and part amount mixes, the making beating that is in harmonious proportion forms slurry, red and the haematein of bisdiazo is high temperature resistant dyestuff, colloid silit is the defervescence agent, strychnine is the high temperature cosolvent, the high boiling solvent of phthalic acid di-isooctyl;

4. remaining phthalic acid di-isooctyl is added described slurry, place in the heating reactor and stir, slowly be warming up to 300 ℃ in the whipping process, stop heating then, be stirred to 200 ℃ again, stop to stir;

5. filter, filtered fluid is cooled to room temperature, promptly gets the high-temperature type dye check bleeding agent;

6. can be in bulk with described high-temperature type dye check penetration liquid, also can fill into the aerosol jar.

The temperature range of the surface of the work that this penetrating fluid was suitable for is: 150～220 ℃, when using this penetrating fluid, at first take out with liquid in bulk or with the penetrating fluid in the aerosol can, be placed on heating in the container, the liquid temperature near workpiece temperature after, brush with high temperatur pot brush.

The composition proportion of embodiment 2 described high-temperature type dye check penetration liquids is as follows:

Composition wt%

Phthalic acid di-isooctyl 68

Strychnine 20

Colloid silit 10

Bisdiazo red 1

Haematein 1

The composition proportion of embodiment 3 described high-temperature type dye check penetration liquids is as follows:

Composition wt%

Phthalic acid di-isooctyl 30

Strychnine 42

Colloid silit 20

Bisdiazo red 4

Haematein 4

The preparation steps of embodiment 2 and embodiment 3 is identical with embodiment 1 with using method, each proportioning components amount difference when just disposing, and wherein each raw material also can be selected chemical pure raw material.

Test in the high temperature crack test piece of special use with high-temperature type dye check penetration liquid of the present invention with its supporting high-temperature type dye check developer, high-temperature type dye check cleaning liquid, it is 0.001mm that the test result demonstration can detect width, breadth depth ratio is 1/60 man-made fracture, and this result reaches the level of sensitivity of penetrant flaw detection agent commonly used.

Claims (2)

1. high-temperature type dye check penetration liquid that is used to be in metal, compact nonmetallic material and product surface inspection thereof under the high temperature is characterised in that its compositing formula is as follows:

Composition wt%

Phthalic acid di-isooctyl 30-68

Strychnine 20-42

Colloid silit 10-20

The red 1-4 of bisdiazo

Haematein 1-4

2. the preparation method of the described high-temperature type dye check penetration liquid of claim 1 is characterized in that this method comprises the following steps:

1. select technical pure or chemical pure raw material for use;

2. select the proportioning of high-temperature type dye check penetration liquid, each raw material of weighing;

The phthalic acid di-isooctyl of 3. that the bisdiazo of institute's weighing is red, haematein, colloid silit and part amount mixes mutually, and the making beating that is in harmonious proportion forms slurry;

4. remaining solvent is added described slurry, place in the heating reactor and stir, slowly be warming up to 300 ℃ in the whipping process, stop heating then, be stirred to 200 ℃ and stop to stir;

5. filter, filtered fluid is cooled to room temperature, promptly gets described high-temperature type dye check penetration liquid;

6. described high-temperature type dye check penetration liquid is in bulk or fill into the aerosol jar.