Common carbon and sulfur analyzers for detecting common elements in stainless steel
Infrared carbon sulfur analyzer to detect common elements in stainless steel
There are more than 100 kinds of chemical elements known at present, and about 20 kinds of chemical elements that can be encountered in steel materials commonly used in industry. For the special steel series of stainless steel formed by people's long-term struggle against corrosion, there are more than ten kinds of most commonly used elements. In addition to the basic element iron that constitutes steel, it has the greatest impact on the performance and organization of stainless steel. The elements are: carbon, chromium, nickel, manganese, silicon, molybdenum, titanium, niobium, titanium, manganese, nitrogen, copper, cobalt, etc. Except for carbon, silicon, and nitrogen, these elements are all elements in the transition group in the periodic table of chemical elements.
In fact, the stainless steels used in industry are several or even dozens of elements at the same time. When several elements coexist in a unified body of stainless steel, their influence is much more complicated than when they exist alone, because in this kind of In this case, it is necessary to consider not only the role of each element itself, but also the influence of each other, so the structure of stainless steel depends on the sum of the effects of various elements.
The influence and effect of various elements on the performance and organization of stainless steel
1-1. The decisive role of chromium in stainless steel
There is only one element that determines the genus of stainless steel. This is chromium. Each stainless steel contains a certain amount of chromium. To date, there is no chromium-free stainless steel. The fundamental reason why chromium becomes the main element that determines the performance of stainless steel is that the addition of chromium to steel as an alloy element promotes the development of its internal contradictory movement in favor of resisting corrosion damage.
1-2. The duality of carbon in stainless steel
Carbon is one of the main elements of industrial steel. The performance and organization of steel are largely determined by the content and distribution of carbon in steel. The influence of carbon in stainless steel is particularly significant. The effect of carbon on the structure of stainless steel is mainly manifested in two aspects. On the one hand, carbon is an element that stabilizes austenite, and the degree of effect is very large (about 30 times that of nickel). On the other hand, due to the affinity of carbon and chromium Large, formed with chromium—a series of complex carbides. Therefore, from the aspects of strength and corrosion resistance, the role of carbon in stainless steel is contradictory.
In order to accurately detect various elements of stainless steel: carbon, sulfur, manganese, phosphorus, silicon, nickel, chromium, molybdenum, copper, titanium, zinc, vanadium, magnesium, etc. Kirin brand QL-S3000C computer infrared all-around joint multi-element analyzer is the company's exclusive and the most advanced multi-element joint measurement analyzer in China. QL-S3000C all-around element analyzer is accurate through infrared and colorimetric principles Testing, matching the configuration of the physical and chemical laboratory as perfect as possible, its requirements for performance, quality and precision have fully reached the international standards, and the total price of the investment is real and value!
It is the first in China to use a wavelength-tunable optical system for a diffraction grating digital motor for an element analyzer. The product adopts a diffraction grating monochromatic body dedicated to an element analyzer that can be controlled by a computer, and the wavelength can be digitally adjusted, that is, any desired wavelength is input, and the optical system is adjusted to the specified wavelength, so that the product can be controlled by the computer according to the measured The requirements of material elements can quickly and conveniently set the required wavelength, and can be used for the analysis of various elements of various metals, non-metallic materials and their alloys such as stainless steel, steel, copper and aluminum.
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