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FOSHAN FEROSTEEL CO., LTD

FOSHAN FEROSTEEL CO., LTD
FOSHAN FEROSTEEL CO., LTD

FOSHAN FEROSTEEL CO., LTD

FOSHAN FEROSTEEL CO., LTD
FOSHAN FEROSTEEL CO., LTD

FOSHAN FEROSTEEL CO., LTD

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Liquid medicine and spectrum, which Detection of stainless steel is more reliable?
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Liquid medicine and spectrum, which Detection of stainless steel is more reliable?

  • Categories:FAQS
  • Author:Ferosteel
  • Origin:Ferosteel
  • Time of issue:2020-04-17 17:48
  • Views:

(Summary description)Stainless steel liquid medicine detection has rapid and simple effects, but is this detection reliable? According to scientific detection, spectral detection is by far the most reliable method to test

Liquid medicine and spectrum, which Detection of stainless steel is more reliable?

(Summary description)Stainless steel liquid medicine detection has rapid and simple effects, but is this detection reliable?
According to scientific detection, spectral detection is by far the most reliable method to test

  • Categories:FAQS
  • Author:Ferosteel
  • Origin:Ferosteel
  • Time of issue:2020-04-17 17:48
  • Views:
Information

"Didn't you say that stainless steel is not rusty? Why is the stainless steel towel rack in my house rusty before long?"
"It is obviously made of stainless steel, but it just rusts. What is the reason?"
"Most of the stainless steel products sold on the market do not have written reports of materials. Consumers only know that they are stainless steel when they buy them. What method should they use to test them?"
"I recently bought a batch of stainless steel and tested it with liquid medicine. Something serious happened, not 304; As a result, it was sent to the spectrum, but it showed that it was 304 indeed. What is the reason?"
............
There are so many stainless steel brands, how to avoid being cheated?
There are so many detection methods, which is the most reliable?
The simple method is to think that the liquid medicine is OK, and one drop is known. For example:
The price difference between 202 and 304 is nearly 1000 yuan. One contains less than 4 nickel and the other contains 8 nickel, which is difficult to distinguish only by naked eyes. However, with the drop of liquid medicine, 304 will hardly change color. And different materials, the color of the liquid medicine is also different:
(1)201: the liquid drop turns brown instantly (1 second);
(2)202: The drop turns brownish red in about 15 seconds;
(3)301: The drop turns pale red in 30 seconds;
(4)304: The drop slowly turns light gray in more than 50 seconds.
Stainless steel liquid medicine detection has rapid and simple effects, but is this detection reliable?
In fact, this simple verification method is generally accepted only in the building materials industry, but the relevant authoritative quality inspection agencies said that this method is a test without authoritative certification and is not scientific.
Stainless steel does not rust, because it contains a kind of chromium Element, which forms a passivation film with the atmospheric oxide layer. The passivation film protects the metal inside, and the passivation film also has the ability to repair itself.
Moreover, the chromium, nickel, manganese and other components of different types of stainless steel vary greatly, and the performance will also vary greatly.
However, the use environment of stainless steel is also more important. For example:
You use 201 pipe to use in the sewer, which will make you rusty immediately;
If you use 304 when you go to the seaside with high salt, it will definitely rust.
The reason why there are so many models is that there are specialized fields.
According to scientific detection, spectral detection is by far the most reliable method to test stainless steel. No matter whether it moves or not, the deviation will not be too large.
However, even such a detection method is not impeccable, and the industry should be more alert to loopholes and traps under scientific detection.
It is understood that in general, when inspecting stainless steel cold-rolled rolls, it only needs to use spectrum detector to irradiate the inner and outer circles of stainless steel.
As a result, there was also a case in the industry: the seller designed to put a layer of high-quality stainless steel plate on the inner layer and the outer layer respectively, and used inferior stainless steel in the middle, pretending to be a well-known brand of high-quality stainless steel Cold Rolled Coil to sell to customers, it was such a kind of inferior stainless steel that unexpectedly cheated pop detector, and the seller got huge profits from it.
The lack of awareness in the industry requires Tool testing. Scientific tool detection requires constant patching, leaving no loopholes for the lawless to take advantage.
 

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