Abstract
A kinetic model was developed to study the dephosphorization of 600 MPa steel droplets under electromagnetic levitation conditions. The relationships which were derived from the model between dephosphorization and the influence of temperature and gas flow rate were in good agreement with experimental data. Both temperature and gas flow rate were conducive to the evaporation of phosphorus, with the effect of temperature having a greater influence than that of the gas velocity. The results show that the rate-controlling step for the dephosphorization process was diffusion within the gas phase. This work aims to provide a theoretical basis for process optimization during the dephosphorization of 600 MPa steel.
Highlights
Steel is a critical material used in the construction industry, and this has a significant effect on industrial development
Since regular strength steel can no longer meet the requirements of the market, 600 MPa steel has been developed
CoInnctlhuissisotundsy, a kinetic model of phosphorus mass transfer associated with levitated dropIlnetsthofis60s0tuMdPya, satekeilnweatsicdemveoldopeeldoifnpohrdoesrpthooevrualsuamteatshsetirnaflnusefnecre aosf steomcipaetreadtuwreith levitated darnodplgeatssfolofw60r0ateMaPnad sdteeteelrmwianse dtheevleimloiptiendg fianctoorrds einr toheedveapluhoastpehtohreiziantiflounepnrcoeceossf.temperature aTnhdegfiansdiflnogws arreatseumanmdardizeetderbmelionwe:the limiting factors in the dephosphorization process
Summary
Steel is a critical material used in the construction industry, and this has a significant effect on industrial development. With the continuous innovation and development of the construction industry, the market demand for steel has increased, and the performance requirements for steel by the industry have increased [1]. Since regular strength steel can no longer meet the requirements of the market, 600 MPa steel has been developed. The presence of phosphorus impurity in the steel will result in the formation of Fe3P, which adversely affects the plasticity and toughness properties. This in turn increases steel brittleness, decreases the cold formability and has a negative effect on weldability of the steel [3,4]
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