Effects of pulse magneto-oscillation on GCr15 bearing steel continuous casting billet

Liu, Yanjie; Xu, Guodong; Wang, Yingchun; Zhong, Honggang; Li, Lijuan; Wang, Biao; Zhai, Qijie

doi:10.1007/s42243-021-00706-y

Cited by 8 publications

(5 citation statements)

References 30 publications

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“…Optimizing the electroslag casting process to improve the carbide's shape and size and refine the solidified microstructure will be essential to enhance this technology. The physical field represented by electromagnetic stirring and pulse magneto-oscillation has made remarkable achievements in improving the quality of metallurgical billets [103][104][105][106][107][108][109][110][111]. These technologies, especially pulse magneto-oscillation solidification homogenization technology, show greater advantages in low-cost, large-scale, high-speed steel metallurgical manufacturing.…”

Section: Discussionmentioning

confidence: 99%

Effect of Alloying and Microalloying Elements on Carbides of High-Speed Steel: An Overview

Chen,

Ye,

Chen

et al. 2024

Metals

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In high-speed steel, carbides are essential phase constituents, which have a direct impact on engineering performance and qualities of high-speed steel. The formation, morphology, and distribution of carbides are dictated by alloying elements. In this paper, various types of carbides in high-speed steel are presented. The effects of different alloying elements such as C, W, Mo, Cr, and V on the formation of carbides in high-speed steel are discussed. Research progresses on carbide improvement by microalloying elements such as N, B, Mg, and rare earth (RE) elements are reviewed. It is reported that Cr promotes the precipitation of M2C, N enhances the formation of fibrous M2C, Mg effectively shatters the large-size carbide grid, Nb refines granular carbide MC, and rare earth elements encourage the formation of M6C, resulting in irregular M2C lamellae. The incorporation of microalloying elements improves the distribution and size of carbides and also refines the solidification structure of high-speed steel.

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Section: Discussionmentioning

confidence: 99%

Effect of Alloying and Microalloying Elements on Carbides of High-Speed Steel: An Overview

Chen,

Ye,

Chen

et al. 2024

Metals

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“…The numerical simulation-aided process design for continuous casting is particularly important, and great progress has been made in numerical simulation of PMO in recent years. [23][24][25][26] Gong et al [27] obtained the relationship between electromagnetic force and critical nucleation radius by simulating the electromagnetic field and flow field in the molten metal and combining it with theoretical calculations. Xu et al [25,26] measured the melt flow rate by an ultrasound Doppler velocimetry, and verified the numerical simulation of the flow field of Ga-In-Sn liquid metal treated by PMO.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Process Parameters for 40Cr Steel Continuous Casting Round Bloom with Pulsed Magneto‐Oscillation Treatment

Yang,

Chen,

Zhang

et al. 2024

steel research int.

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To reduce the solidification structure defects and the macrosegregation of the Φ300 mm continuous casting round bloom, the pulsed magneto‐oscillation (PMO) treatment is added at the secondary cooling zone. A numerical model for calculating the pulsed electromagnetic field, flow field, and temperature field in continuous casting is established, and the coupling simulations of multiphysical fields under different casting parameters and PMO parameters are performed. Their influence on solidification process and the appropriate parameters are discussed. The industrial experiments conducted under the recommended parameters yield good results. Industrial experiments show that when the peak current is increased from 1350 to 1550 KIA and the casting speed is increased from 0.75 to 0.90 m min−1, PMO can increase the equiaxed grain zone and reduce the carbon macrosegregation of the bloom. Moreover, at high casting speed, PMO treatment can significantly promote columnar‐to‐equiaxed transition and increase the width of mixed grain zone.

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“…However, when the discharge energy of the capacitor bank was excessively large, the grain structure became coarse. Liu et al [25] applied a pulsed electric field to the continuous casting process of 20CrMnTi gear steel. The results of the solute distribution measured using in situ metal elemental analysis also showed that the distribution of each element in the billet treated by a pulsed electric field was more uniform and the degree of segregation was reduced.…”

Section: Introductionmentioning

confidence: 99%

Study on the as-cast microstructure and mechanical properties of 35CrMo steel based on electric field control

Xiao,

Zhou,

Miao

et al. 2024

Mater. Res. Express

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Herein, the effect of current on the solidification microstructure and properties of 35CrMo structural steel has been studied. The effect of an electric field on the solidification structure of an ingot was investigated by immersing two parallel electrodes into the free surface of molten steel. Using the interaction between the current and melt as well as the Lorentz force generated by its own induced magnetic field, the whole region of the melt was covered with an eddy current. The numerical simulation of the ingot solidification process has been carried out and its influence on the inner flow field during the ingot solidification control process discussed. The results showed that an applied electric field caused turbulence inside the ingot, which drove the molten alloys to rotate and stir, refined the solidification structure, reduced the solidification defects, such as shrinkage cavity and segregation, and increased from 549.9 MPa at the top edge of the ingot and 411.4 MPa at the middle edge to 560.2 and 510.2 MPa, respectively. In addition, the electric field made the hardness and strength of each part of the ingot more uniform and improved the quality of its rigidity for the steel production process.

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Effects of pulse magneto-oscillation on GCr15 bearing steel continuous casting billet

Cited by 8 publications

References 30 publications

Effect of Alloying and Microalloying Elements on Carbides of High-Speed Steel: An Overview

Effect of Alloying and Microalloying Elements on Carbides of High-Speed Steel: An Overview

Optimization of Process Parameters for 40Cr Steel Continuous Casting Round Bloom with Pulsed Magneto‐Oscillation Treatment

Study on the as-cast microstructure and mechanical properties of 35CrMo steel based on electric field control

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