Abstract
A study has been carried out to establish the rapid and reliable method of isolation of large inclusions (>50μ) in steels and classification according to the size.The results are as follows.1) A large quantity of slime obtained by electrolysis of steel are separated from inclusions about in an hour by ultrasonic sieving method (applied except Al killed steel) or by elutriation method using the improved apparatus.2) A small quantity of cementite and metallic iron particles are separated magnetically, and nonmagnetic iron rust is also separated similarly after the reduction to metallic iron. The quality of inclusions is not affected by this treatment. Inclusions attached to magnet with magnetic substance must be recovered by the Br2-CH3OH method or by picking up them observing through a microscope.3) Using the sieves, the obtained inclusions are classified reliably according to the size.4) The shape of silicate inclusions is hardly damaged by the ultrasonic vibration, but chemical treatment changes markedly their composition. On the other hand aluminate inclusions are chemically stable and very brittle.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
