citeseerx tundish nozzle clogging application of
Investigation on nozzle clogging during steel billet
This paper considers the problem of oxide build-up within a tundish nozzle when casting aluminum killed steel. Water model studies have shown that the clogging problem may be very dependent on the
Get Price(PDF) Nozzle clogging prediction in continuous casting of
Nozzle clogging is a serious productivity and qua lity problem in continuous casting. This work reviews the causes effects and solutions to cloggi ng in continuous casting nozzles.
Get PriceApplication of a Swirling Flow Producer in a Conventional
Application of a Swirling Flow Producer in a Conventional Tundish during Continuous Casting of Steel Peiyuan NI 1 2) Lage Tord Ingemar JONSSON 2) Mikael ERSSON 2) may lead to nozzle clogging restrict its application for longer casting times. The electromagnetic stirring method is another method to produce a swirling flow in SEN which .
Get PriceSimulation of Non-metallic Inclusion Deposition and
Mar 11 2018 · In this model different steps of clogging have been considered including transport of NMIs by turbulent melt flow towards the nozzle wall adhesion of the NMI on the wall and formation and growth of clogging material by the NMI deposition. The model is used to simulate clogging in a pilot scale device.
Get PriceSuccessful continuous billet casting through oxygen
Fig. 5 shows tundish nozzle clogging in submerged casting and open stream casting. In case of a slide gate or stopper controlled nozzle as per a) the bigger nozzle clogs just partly and steel flow is almost unhampered especially when Al-killed steel is Calcium treated. On the right side in open stream casting the tundish nozzle is
Get PriceClogging Prevention in Submerged Entry Nozzles
Clogging of the SEN is a complex problem which implies large annual costs to the steel industry. Nozzle clogging leads to interrupted production when the nozzle or tundish need replacement. Moreover clogging reduces steel quality as pieces of the clog may loosen and give rise to larger inclusions in the cast steel. The first part of this study presents an overview of the clogging mechanisms.
Get PriceCONTINUOUS CASTING REFRACTORY / TOTAL TUNDISH MANAGEMENT
We also carry out Total Tundish Management (TTM) where it is required to supply all the items involved in a Tundish including technical services and applications at site. SPECIAL FEATURES o Facility for gas purging. o Anti oxidant properties. o Design and size as per customer s requirement. o Clogging free casting for long sequence of casting.
Get PriceAuthor Index p. 973GBV
Tundish Nozzle CloggingApplication of Computational Models p. 895 Simulation of Nozzle Clogging During the Continuous Casting of Aluminum-Killed Steels p. 913 Modeling of Fluid Flow and Heat Transfer Characteristics in AOD Nozzles p. 927 Fluid Flow and Reaction Kinetics of Tank Degassing p. 941
Get PriceDevelopment of High-Efficiency Continuous Casting
(1) Nozzle clogging prevention method (AI nozzle) Alumina and other substances accumulate on the inner surface of the SEN of continuous caster. Conventional countermeasures are argon gas injection and improvement of the material or design of the SEN. These conventional techniques were not as effective as we expected to prevent nozzle clogging.
Get PriceSimulation of Non-metallic Inclusion Deposition and
Mar 11 2018 · In this model different steps of clogging have been considered including transport of NMIs by turbulent melt flow towards the nozzle wall adhesion of the NMI on the wall and formation and growth of clogging material by the NMI deposition. The model is used to simulate clogging in a pilot scale device.
Get PriceTURBULENT FLOW SIMULATIONS IN BIFURCATED NOZZLES
clogging before the flow becomes constricted. This study investigates the application of two and three-dimensional finite-element models using the K-ε turbulence equations for the prediction of flow through a typical SEN. This particular nozzle configuration shown
Get PriceClogging of submersible nozzles in continuous slab-casting
The clogging of submersible nozzles is found to be associated with the deposition of products from the reduction and secondary oxidation of the steel droplets of solidifying steel and slag particles captured by the metal jets when the melt level in the tundish falls. To reduce clogging it is expedient to match the casting rate (the flow rate
Get PriceARGON BUBBLE BEHAVIOR IN SLIDE-GATE TUNDISH
bubble size and nozzle port design including port angle and port shape. The interrelated effects of nozzle clogging argon injection tundish bath depth slide gate opening and nozzle bore diameter on the flow rate and pressure in tundish nozzles are quantified using an inverse model based on interpolation of the numerical simulation results.
Get Price(PDF) Kinetic Modeling on Nozzle Clogging During Steel
Clogging starts when solid compounds mainly steel skull and non-metallic inclusions are non-uniformly deposited at the entry nozzle inner wall at some typical preferential zones characterized
Get PriceClogging Prevention in Submerged Entry Nozzles
Clogging of the SEN is a complex problem which implies large annual costs to the steel industry. Nozzle clogging leads to interrupted production when the nozzle or tundish need replacement. Moreover clogging reduces steel quality as pieces of the clog may loosen and give rise to
Get PriceARGON BUBBLE BEHAVIOR IN SLIDE-GATE TUNDISH
bubble size and nozzle port design including port angle and port shape. The interrelated effects of nozzle clogging argon injection tundish bath depth slide gate opening and nozzle bore diameter on the flow rate and pressure in tundish nozzles are quantified using an inverse model based on interpolation of the numerical simulation results.
Get PriceNozzle Changer Mechanismmonoconfo
Extending tundish sequences by exchanging a worn or clogged metering nozzle with a new nozzle. Alternative metering nozzle sizes are used to facilitate casting speed changes as required. Using the preloaded safety blank plate the metal stream can be shut
Get Price(PDF) Nozzle clogging prediction in continuous casting of
Nozzle clogging is a serious productivity and qua lity problem in continuous casting. This work reviews the causes effects and solutions to cloggi ng in continuous casting nozzles.
Get PriceApplication of electromagnetic forces to reduce tundish
Jan 01 2004 · 2. Generation of electromagnetic forces. In terms of typical dimensions a tundish nozzle ranges from 5 to 15 mm in diameter and from 50 to 100 mm in length. The average velocity of the molten steel through the nozzle is a function of the ferrostatic head h in the tundish and usually is
Get PriceAn Experimental Study of Submerged Entry Nozzles (SEN
The submerged entry nozzle (SEN) is used to transport the molten steel from a tundish to a mould. The main purpose of usage is to prevent oxygen and its nitrogen pick-up by molten steelfrom the gas. Furthermore to achieve the desired flow conditions in the mould. Therefore the
Get PriceNozzle Changer Mechanismmonoconfo
Extending tundish sequences by exchanging a worn or clogged metering nozzle with a new nozzle. Alternative metering nozzle sizes are used to facilitate casting speed changes as required. Using the preloaded safety blank plate the metal stream can be shut
Get PriceAuthor Index p. 973GBV
Tundish Nozzle CloggingApplication of Computational Models p. 895 Simulation of Nozzle Clogging During the Continuous Casting of Aluminum-Killed Steels p. 913 Modeling of Fluid Flow and Heat Transfer Characteristics in AOD Nozzles p. 927 Fluid Flow and Reaction Kinetics of Tank Degassing p. 941
Get PriceTundish nozzle blockage in continuous casting SpringerLink
Examination of the phenomenon of nozzle blockage encountered during casting of aluminum-killed steel resulted in the following conclusions 1. The mechanism of clogging is a complex process involving the precipitation of alumina in the bore of the nozzle augmented by dendritic growth of entrapped steel. 2. At low aluminum concentrations ( lt0.01 Al soluble) the alumina branches were found
Get PriceArgon Bubble Behavior in Slide-Gate Tundish Nozzles During
The interrelated effects of nozzle clogging argon injection tundish bath depth slide gate opening and nozzle bore diameter on the flow rate and pressure in tundish nozzles are quantified using an inverse model based on interpolation of the numerical simulation results.
Get PriceARGON BUBBLE BEHAVIOR IN SLIDE-GATE TUNDISH
bubble size and nozzle port design including port angle and port shape. The interrelated effects of nozzle clogging argon injection tundish bath depth slide gate opening and nozzle bore diameter on the flow rate and pressure in tundish nozzles are quantified using an inverse model based on interpolation of the numerical simulation results.
Get PriceSuccessful continuous billet casting through oxygen
Fig. 5 shows tundish nozzle clogging in submerged casting and open stream casting. In case of a slide gate or stopper controlled nozzle as per a) the bigger nozzle clogs just partly and steel flow is almost unhampered especially when Al-killed steel is Calcium treated. On the right side in open stream casting the tundish nozzle is
Get PriceClogging of submersible nozzles in continuous slab-casting
The clogging of submersible nozzles is found to be associated with the deposition of products from the reduction and secondary oxidation of the steel droplets of solidifying steel and slag particles captured by the metal jets when the melt level in the tundish falls. To reduce clogging it is expedient to match the casting rate (the flow rate
Get Price
