Are penetrants for penetrant flaw detection harmful to humans?

It is harmful to inhale and is almost harmful when touched by hand.

It hurts a little bit, but it doesn't hurt much, it doesn't matter.

Harmful, pay attention to less contact as well.

Summary. Alkali-resistant penetrants include alkali-resistant penetrant OEP-70, alkali-resistant penetrant AEP, penetrant JFC-2 and penetrant OE-35

What are the dangers of penetrants???

Penetrant is a kind of surface fiber number which active agent, can be used in many industries, penetrant is mainly used in textile printing and dyeing leather industry. There are many types of penetrants, which can be divided into strong alkaline penetrants, weak alkaline penetrants, near-neutral penetrants, weak acidic penetrants, strong acid penetrants, etc.

How much harm does it hurt if I accidentally drink it?

The acid and alkali itself are corrosive to the cracking of the empty mind, especially the strong acid and alkali, so the penetrant that is resistant to strong alkali and strong acid is more or less unsafe. Therefore, when the sail is closed, we must take corresponding protective measures when we use it. As long as it is used in accordance with the product manual, there is no harm under normal use.

Alkali-resistant penetrants include alkali-resistant penetrant OEP-70, alkali-resistant penetrant AEP, penetrant JFC-2 and penetrant OE-35

If there is no discomfort can be observed, if there is discomfort that needs to be gastric lavage, then there is no need to deal with it, generally fine, if you do have an empty or hearty scum, go to the hospital for gastric lavage, generally a small amount is fine, regular contact will be, a bucket of orange Wuci generally will not.

According to the chemical properties, penetrants can be divided into: strong alkaline penetrants, weak alkaline cavity resistant penetrants, near-neutral penetrants, weak acid penetrants, strong acid penetrants, etc. After all, acids and alkalis are corrosive, and from these properties, they are more or less harmful.

For the human body, general chemicals are harmful to the body, and according to the different types of chemicals, it can always damage the body's functions to varying degrees, bringing a serious load to the normal work of the body.

Penetrant flaw detection (PT).

Principle: After the penetrant containing fluorescent dyes or coloring dyes is applied to the surface surface of the part, the permeate can penetrate into the surface opening defect after a period of time under the action of the capillary; After removing the excess permeate on the surface of the part, the developer is applied to the surface of the part, and similarly, under the action of the capillary, the developer will attract the permeate retained in the defect, and the permeate will infiltrate back into the developer, and under a certain light source (ultraviolet light or white light), the traces of the permeate at the defect will be realized, (yellow-green fluorescence or bright red), so as to detect the morphology and distribution state of the defect.

Penetrant flaw detection is simple to operate, does not require complex equipment, is inexpensive, has intuitive defect display, and has a high sensitivity to find defects with a width of less than 1 micron. This method is widely used in the inspection of surface defects of ferrous and non-ferrous metal forgings, castings, welded parts, machined parts, ceramics, glass, plastics, etc., because the inspection object is not limited by the structure and chemical composition of the material. It can check for defects such as cracks, cold separation, inclusions, looseness, folding, porosity, etc.; However, it is not suitable for loose powder metallurgy parts and other porous materials.

Fig. 1 shows the thermal stress cracks on the shell found by the coloring method; Figure 2 shows the weld crack found by the fluorescence method.