Technique for calculating the effectiveness of the elements of the intermediate ladle of a CBCM

Semenov, M. V.; Tochilkin, Vasilii V.

doi:10.3103/s1068798x07060056

Cited by 4 publications

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“…Continuous casters that have recently been introduced are equipped with a 5-strand T-shaped tundish. Certain design features of this tundish are making it difficult to use the standard refining equipment, which has made it necessary to design special new equipment [2,12] that create favorable conditions for surfacing of the NI. Figure 1 shows the tundish.…”

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confidence: 99%

Designing Refractories for the Tundish of a Continuous Caster

2016

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Section: Main Partmentioning

confidence: 99%

Designing Refractories for the Tundish of a Continuous Caster

2016

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“…3) have been developed for use in the discharge section of tundishes [4 -6] to limit the amount of NIs that fall into the pouring channel. The discharge section is encased in metal housing 1 lined with bulk refractories 2 [3,7,10,11]. The following elements are installed inside the bulk refractories: starting tube 3, ladle nozzle 4, top metering nozzle 5, and bottom metering nozzle 6.…”

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Improving the Designs of Elements of Refractory Materials for the Tundish of Continuous Section Casters

Marochkin¹,

Вдовин

Yachikov

et al. 2016

Refract Ind Ceram

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This article examines the designs of sets of equipment installed in the discharge chambers of the tundishes on continuous section casters. Further refinement and practical introduction of the designs will effectively extinguish the eddies that form above the discharge nozzles and improve the quality of the castings by forming a well-organized stream of molten metal.New designs are being developed to improve the performance of elements of the refractory products used in continuous section casters to improve the quality of the cast steel. A great deal of attention is being given to designs that provide for good organization of the stream of liquid metal on the tundish-mold section [1 -9]. More attention is being paid in particular to special devices that separate nonmetallic inclusions (NIs) from the steel by organizing the flows of metal in the necessary directions [1,2].The most economical method of continuous section casting is casting in an open stream with the use of metering nozzles. Use of this method increases the service life of the tundish and requires fewer preparatory operations than other casting methods -such as casting with a closed stream. To create the conditions necessary for continuous casting over long periods of time, the following requirements must be satisfied by the metering nozzles:-uniform feed of the molten metal through the intake openings in the mold during the entire casting operation;-the formation of a distinct stream without sprays of metal;A design of metering nozzle with an elongated bushing has been developed [3] to obtain such a stream and prevent spraying (fanning) of the metal. The nozzle is a metal housing 1 lined with a bulk refractory 2 that has a zircon bushing 3 located at its center (Fig. 1). Use of the metering nozzle with its elongated bushing has improved the formation of the skin of the continuous-cast semifinished product, made it easier to replace the nozzle when necessary, made the operation of the tundish more efficient, reduced the cost of its repair, and increased the productivity of continuous section casters. Here, the length (height) of the bushing is limited by the likelihood of having the steel-pouring channel (the internal cavity of the zircon bushing) obstructed by NIs that are entrained by the flows of liquid steel which enter the channel.The probability of such obstruction of the pouring channel was discovered on decommissioned metering nozzles af-

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Technologies for Controlling Flows of Steel and the Development of Refractory Structures for the Tundish of a Four-Strand Continuous Caster

Вдовин

Tochilkin

2016

Refract Ind Ceram

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Technique for calculating the effectiveness of the elements of the intermediate ladle of a CBCM

Cited by 4 publications

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Designing Refractories for the Tundish of a Continuous Caster

Designing Refractories for the Tundish of a Continuous Caster

Improving the Designs of Elements of Refractory Materials for the Tundish of Continuous Section Casters

Technologies for Controlling Flows of Steel and the Development of Refractory Structures for the Tundish of a Four-Strand Continuous Caster

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