Main purpose of the system

Efficient and low-cost production of clean steel is an important process technology in the field of steel metallurgy at home and abroad, and the control of non-metallic inclusions in steel is the key to clean steel production and a current research hotspot in the discipline of steel metallurgy. Non metallic inclusions include oxide, sulfide, and nitride particles in steel, which disrupt the continuity of the steel matrix and have adverse effects on the ductility, toughness, fatigue resistance, corrosion resistance, and processing performance of the steel. Improving the cleanliness of steel and removing non-metallic inclusions from steel has always been an important topic in steelmaking scientific research. In recent years, with the advancement of domestic steelmaking technology and the continuous improvement of high-quality steel research and development level, the control requirements for non-metallic inclusions in steel have become increasingly stringent.
The study of non-metallic inclusions in steel must first accurately and quickly characterize their chemical composition, morphology, size, quantity, and distribution. Traditional optical microscopy analysis methods cannot analyze the chemical composition of inclusions, so the results of inclusion detection are greatly affected by human factors, and the reproducibility of the results is low; Although the scanning electron microscopy (SEM+EDS) analysis method can be used to analyze the chemical composition of inclusions through an energy spectrometer, it can only analyze a limited detection area on small samples (usually only tens of mm2). The number of inclusions analyzed is limited, the representativeness of the analysis results is low, and the detection speed is relatively slow. Metallurgical workers urgently need an automatic detection and analysis system for non-metallic inclusions in steel.

It can be mainly applied in the following areas:

(1) It is possible to quickly and accurately analyze the composition, size, and quantity of non-metallic inclusions in steelmaking refining furnaces (such as ladle LF furnace, RH vacuum refining, VD vacuum refining, CAS refining, etc.) and intermediate steel samples, so as to track the changes in steel cleanliness in real time, and timely judge whether the refining and continuous casting processes are reasonable and reliable according to the requirements of the steelmaking type for inclusions;
(2) Accurate analysis of the composition, size, quantity, and distribution of non-metallic inclusions in large slab specimens (or hot-rolled plates, cold-rolled plates) can be conducted (with a total analysis and detection area of ≥ 200mm2), and the inclusions in the produced continuous casting billets or rolled plates can be rated and judged;
(3) Rapid analysis of the morphology, size, and chemical composition of non-metallic inclusions in steel fractures (fatigue fractures, impact fractures, etc.) and defects (such as warping and delamination defects in hot-rolled plates), and the ability to perform surface or line scan analysis on the composition of small and composite inclusions, to analyze the formation mechanism and source of non-metallic inclusions that cause steel defects.

System Composition
Non metallic inclusions, especially large particle inclusions, pose a great threat to the performance of high-quality steel. In order to remove them as much as possible, metallurgical workers must first accurately and quickly characterize the composition, morphology, size, quantity, and distribution of non-metallic inclusions in the steel sample. Currently, traditional optical microscopy inspection methods cannot analyze the chemical composition of inclusions and rely solely on their morphology for identification. Therefore, the results of inclusion detection and rating are greatly affected by human factors, and the reproducibility of the results is low.
The ASIN fully automatic non-metallic inclusion analysis system for steel is a comprehensive analysis system that integrates an applied scanning electron microscope, a large-area high-speed energy spectrum detector, and related inclusion automatic analysis software. This system not only has a complete electronic optical imaging system, which can clearly observe the microstructure of non-metallic inclusions in steel, but also is equipped with a professional large-area high-speed X-ray spectrometer in the industry, which automatically analyzes the chemical composition of all non-metallic inclusions in steel in the selected area of the sample quickly and accurately. The high performance, high precision, and high stability of this product have gained the trust and recognition of users worldwide.

Introduction to System Functions
1. It can automatically analyze the composition, size, quantity, and distribution of non-metallic inclusion particles in large-area steel samples quickly and accurately, and can accurately detect inclusions or precipitates with sub micron sizes.
2. Visually display the microstructure and chemical composition of all automatically detected inclusions; And it can accurately determine the size and position distribution of each inclusion.
3. Ability to classify and statistically analyze all inclusions in the sample based on their size, chemical composition, and location distribution.
4. Be able to accurately identify various phases in composite inclusions and perform phase analysis on the inclusions using SmartMap.
5. A detailed rating report can be issued based on the requirements of various inclusion rating standards, combined with the results of automatic inclusion detection.

Authoritative standards ensure quality control
ASTM E2141 in the United States;
Sweden SS111116;
German DIN 50602;
International standard ISO 4967
Pirelli standards, etc.