Kinetics of Phosphorus Transfer during Industrial Electroslag Remelting of G20CrNi2Mo Bearing Steel
Phosphorus is undesirable in steel for it greatly decreases ductility and causes embrittlement in most cases. The kinetic behavior of phosphorus transfer was investigated during electroslag remelting (ESR) of G20CrNi2Mo bearing steel. Four heat treatments were carried out using an industrial furnace...
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MDPI AG
2019-04-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/9/4/467 |
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| author | Shijian Li Guoguang Cheng Yu Huang Weixing Dai Zhiqi Miao |
| author_facet | Shijian Li Guoguang Cheng Yu Huang Weixing Dai Zhiqi Miao |
| author_sort | Shijian Li |
| collection | DOAJ |
| description | Phosphorus is undesirable in steel for it greatly decreases ductility and causes embrittlement in most cases. The kinetic behavior of phosphorus transfer was investigated during electroslag remelting (ESR) of G20CrNi2Mo bearing steel. Four heat treatments were carried out using an industrial furnace with a capacity to refine 2400 kg ingot. It was found the P content in the four ingots were all higher than that in the electrodes, indicating rephosphorization occurs during ESR. A kinetic model based on film and penetration theory was developed to elucidate the variation of phosphorus from metal film to droplet and metal pool. The model indicates that the rate-determining step of phosphorus transfer is at the slag side. Rephosphorization mainly occurs in the metal film and falling droplet. In addition, the effect of P in the slag and electrode, as well as the temperature of the slag pool on the P content in the metal pool were discussed. In order to achieve a low-P ingot of no more than 0.015%, the corresponding maximum P content in slag under the condition of a certain P content in the electrode was proposed. |
| first_indexed | 2024-12-16T07:35:56Z |
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| id | doaj.art-d34f23815bdc470c8c0e4d83f9ad71db |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-16T07:35:56Z |
| publishDate | 2019-04-01 |
| publisher | MDPI AG |
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| series | Metals |
| spelling | doaj.art-d34f23815bdc470c8c0e4d83f9ad71db2022-12-21T22:39:13ZengMDPI AGMetals2075-47012019-04-019446710.3390/met9040467met9040467Kinetics of Phosphorus Transfer during Industrial Electroslag Remelting of G20CrNi2Mo Bearing SteelShijian Li0Guoguang Cheng1Yu Huang2Weixing Dai3Zhiqi Miao4State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, ChinaState Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, ChinaState Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, ChinaState Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, ChinaState Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, ChinaPhosphorus is undesirable in steel for it greatly decreases ductility and causes embrittlement in most cases. The kinetic behavior of phosphorus transfer was investigated during electroslag remelting (ESR) of G20CrNi2Mo bearing steel. Four heat treatments were carried out using an industrial furnace with a capacity to refine 2400 kg ingot. It was found the P content in the four ingots were all higher than that in the electrodes, indicating rephosphorization occurs during ESR. A kinetic model based on film and penetration theory was developed to elucidate the variation of phosphorus from metal film to droplet and metal pool. The model indicates that the rate-determining step of phosphorus transfer is at the slag side. Rephosphorization mainly occurs in the metal film and falling droplet. In addition, the effect of P in the slag and electrode, as well as the temperature of the slag pool on the P content in the metal pool were discussed. In order to achieve a low-P ingot of no more than 0.015%, the corresponding maximum P content in slag under the condition of a certain P content in the electrode was proposed.https://www.mdpi.com/2075-4701/9/4/467bearing steelelectroslag remeltingslag-metal reactionphosphorus transferkinetics |
| spellingShingle | Shijian Li Guoguang Cheng Yu Huang Weixing Dai Zhiqi Miao Kinetics of Phosphorus Transfer during Industrial Electroslag Remelting of G20CrNi2Mo Bearing Steel Metals bearing steel electroslag remelting slag-metal reaction phosphorus transfer kinetics |
| title | Kinetics of Phosphorus Transfer during Industrial Electroslag Remelting of G20CrNi2Mo Bearing Steel |
| title_full | Kinetics of Phosphorus Transfer during Industrial Electroslag Remelting of G20CrNi2Mo Bearing Steel |
| title_fullStr | Kinetics of Phosphorus Transfer during Industrial Electroslag Remelting of G20CrNi2Mo Bearing Steel |
| title_full_unstemmed | Kinetics of Phosphorus Transfer during Industrial Electroslag Remelting of G20CrNi2Mo Bearing Steel |
| title_short | Kinetics of Phosphorus Transfer during Industrial Electroslag Remelting of G20CrNi2Mo Bearing Steel |
| title_sort | kinetics of phosphorus transfer during industrial electroslag remelting of g20crni2mo bearing steel |
| topic | bearing steel electroslag remelting slag-metal reaction phosphorus transfer kinetics |
| url | https://www.mdpi.com/2075-4701/9/4/467 |
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