STUDY ON INCLUSIONS IN 65Mn THIN SLABS PRODUCED BY A CSP PROCESS

摘要

The influence of superheat degree on the distribution and volume content of inclusions were studied in 65Mn thin slab produced by compact strip production(CSP) in Zhujiang Steel in China, The results showed that the diameters of inclusions are mainly less than 5um. Most of the inclusions gathered at the 1/4 thickness direction for the thin slab of 27 °C superheat degree, compared with the center position for that of 37°C. There are more inclusions larger than 50um in the low superheat samples, which is caused by the short floating time. In addition, the inclusions were observed and analyzed by metallurgical microscope, SEM and EDS in order to ensure their composition, type and further find their source. It was find that the types of these inclusions mainly are Al_2O_3, SiO_2,CaO and their composites, a few of them are TiN and MnS.