Academic literature on the topic 'Electro-Slag Remelting/ESR'

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Journal articles on the topic "Electro-Slag Remelting/ESR"

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Rao, Lei, Qi Yao Hu, and Xiao Long Li. "Numerical Simulation Study of Consumable Electrode Melting Process in Electro-Slag Remelting Ingots." Advanced Materials Research 189-193 (February 2011): 3895–98. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.3895.

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Electro-slag remelting (ESR) is a kind of special metallurgy techniques to produce high quality alloy materials. The interface of electrode and slag is the energy entrance of entire system in the remelting process. Mathematical model of consumable electrode’s melting process has been built in this paper. Some valuable variation rules of droplet diameter, droplet forming time, melting rate and purification coefficient following melting current and slag bath depth have been studied through a series of simulation work. Based on the mechanism studying of the consumable electrode’s melting, some me
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Pribulová, A., P. Futáš, A. Kmita, D. Márasová, and M. Holtzer. "Impact of electro slag remelting on 14 109 steel properties." Archives of Metallurgy and Materials 62, no. 1 (2017): 181–85. http://dx.doi.org/10.1515/amm-2017-0025.

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Abstract The Electro Slag Remelting (ESR) is one of the remelting processes in the field of metal refinery. In this process, the slag plays various roles, such as heat generation, protection of melt, and chemical refining. The main objective of the experiments described in this article was to identify the most appropriate slag composition for the electro slag remelting of the steel in order to achieve the chemical composition compliant with the standard applicable to the given steel, minimum sulphur content, minimum contents of oxide and sulphide inclusions, as well as mechanical properties co
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Pribulová, Alena, Peter Futáš, and Marianna Bartošová. "Cleanness and Mechanical Properties of Steel after Remelting under Different Slags by ESR." Key Engineering Materials 635 (December 2014): 112–17. http://dx.doi.org/10.4028/www.scientific.net/kem.635.112.

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Quality of machine production is very close-knit with quality of metallurgical semi-products and with improvement their working properties. It can be achieved first of all by decrease of sulphur and non-metallic inclusions content in metal. Improvement of working properties provide remelted processes above an electro slag remelting (ESR). The slags play very important role by ESR process. By experiments steel with next chemical composition was used: C (0,9 – 1,1%), Mn (0,30 – 0,50%), Si (0,15 – 0,35%), Cr (1,30 – 1,65%), Ni (max.0,30%), Cu (max.0,25%), P (max.0,027%), S (max.0,030%). The steel
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Sjöqvist Persson, Ewa, Andrey Karasev, Alec Mitchell, and Pär G. Jönsson. "Origin of the Inclusions in Production-Scale Electrodes, ESR Ingots, and PESR Ingots in a Martensitic Stainless Steel." Metals 10, no. 12 (2020): 1620. http://dx.doi.org/10.3390/met10121620.

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The focus of the study was to define the origin of the inclusions in production-scale electro-slag remelting, (ESR) and electro-slag remelting under a protected pressure controlled atmosphere, (PESR), ingots. The inclusion characteristics in production samples were studied using both polished sample surfaces (two-dimensional (2-D) investigations) and inclusions extracted from steel samples by electrolytic extraction (three-dimensional (3-D) investigations) using SEM in combination with EDS. The results were compared to results from previously reported laboratory-, pilot-, and production-scale
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Wang, Fei, Xi Chun Chen, and Han Jie Guo. "Influences of Adding Aluminum on Inclusions in H13 Steel through P–ESR." Advanced Materials Research 476-478 (February 2012): 218–26. http://dx.doi.org/10.4028/www.scientific.net/amr.476-478.218.

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Reducing oxide inclusions’ number and size by aluminum deoxidization is an effective way for improving working life of high strength steel. For this purpose, during inert gas protection electro–slag remelting (P–ESR) process and H13 steel as electrodes, the deoxidizer being made of aluminum grains, iron powder and calcium fluoride powder mixture was added into slag pool with different addition rates. Results of experiment indicated that, by P–ESR remelting, oxygen content reduced from 0.0045 to 0.0010 with different aluminum addition rates. Based on the SEM and EDS analysis, inclusions transfo
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Moon, Jung Ho, and Tae Kwon Ha. "Characterization of High Speed Steel Billets Fabricated by Electro-Slag Rapid Remelting Method." Materials Science Forum 804 (October 2014): 303–6. http://dx.doi.org/10.4028/www.scientific.net/msf.804.303.

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M2 steels, the typical Co-free high speed steel (HSS) possessing hardness level of 63~65 HRc, are most widely used for cutting tools. On the other hand, Co-containing HSS’s, such as M35 and M42, show a higher hardness level of 65~67 HRc and used for high quality cutting tools. In the fabrication of HSS’s, it is very important to control cleanliness and eutectic carbide structure of the ingot and it is required to increase productivity at the same time. Production of HSS ingots includes a variety of processes such as casting, electro-slag remelting (ESR), forging, blooming, and wire rod rolling
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K.M Kelkar, J. Mok, S. V. Patankar, and A. Mitchell. "Computational modeling of electroslag remelting processes." Journal de Physique IV 120 (December 2004): 421–28. http://dx.doi.org/10.1051/jp4:2004120048.

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Alloys used for the production of rotating components in aeroengines and land-based turbines are subject to stringent requirements to ensure absence of melt-related defects such as inclusions and segregation. Accordingly, the production of the superalloys alloys used in these applications involves multiple remelting stages, each of which plays a distinct role in ensuring that the final ingot is defect-free. Because of the complexity of these processes, high-temperature environments, and high initial and operating costs, trial-and-error based approaches for process design are inadequate. Comput
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Persson, Ewa Sjöqvist, Sofia Brorson, Alec Mitchell, and Pär G. Jönsson. "Impact of Solidification on Inclusion Morphology in ESR and PESR Remelted Martensitic Stainless Steel Ingots." Metals 11, no. 3 (2021): 408. http://dx.doi.org/10.3390/met11030408.

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This study focuses on the impact of solidification on the inclusion morphologies in different sizes of production-scale electro-slag remelting (ESR) and electro-slag remelting under a protected pressure-controlled atmosphere, (PESR), ingots, in a common martensitic stainless steel grade. The investigation has been carried out to increase the knowledge of the solidification and change in inclusion morphologies during ESR and PESR remelting. In order to optimize process routes for different steel grades, it is important to define the advantages of different processes. A comparison is made betwee
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Kharicha, Abdellah, Wolfgang Schützenhöfer, Andreas Ludwig, and Gerhard Reiter. "Influence of the Slag/Pool Interface on the Solidification in an Electro-Slag Remelting Process." Materials Science Forum 649 (May 2010): 229–36. http://dx.doi.org/10.4028/www.scientific.net/msf.649.229.

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The Electro-Slag-Remelting (ESR) is an advanced technology for the production of components of e.g. high quality steels. In the present study a comprehensive computational model using the VOF technique for the prediction of the slag/pool interface is presented for axisymmetric and steady state conditions. In this model the distribution of the electric current is not constant in time, but is dynamically computed according to the evolution of the slag and steel phase distribution. The turbulent flow, created by the Lorentz and buoyancy forces, is computed by solving the time-averaged mass and mo
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Xu, Wen Yong, Zhou Li, Hua Yuan, Yue Wang, Na Liu, and Guo Qing Zhang. "Influence of Master Alloy on the Cleanliness of Spray Formed Superalloy." Materials Science Forum 788 (April 2014): 421–25. http://dx.doi.org/10.4028/www.scientific.net/msf.788.421.

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Three kinds of master alloys, including scrap material, vacuum induction melting (VIM) ingot and electro slag remelting (ESR) ingot, were spray formed into different billets. The influence of master alloy on the cleanliness of spray formed superalloy was investigated by means of electron beam (EB) button melting and Scanning Electron Microscopy (SEM), on the basis of optimized process of spray forming and EB button melting. The results show that the inclusions in spray formed preform are mainly composed of alumina and magnesia, stem from master alloy and some refractory materials in the proces
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Dissertations / Theses on the topic "Electro-Slag Remelting/ESR"

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Nilsson, Hultén Leo. "Nitrogen Without Oxygen : The effect of ferroalloys added after vacuum treatment on cleanliness of nitrogen-alloyed tool steel." Thesis, KTH, Materialvetenskap, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-298093.

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Nitrogen-alloyed tool steel is made at Uddeholms AB by adding high-nitrogen ferroalloy after vacuum degassing where introduced impurities are hard to remove. In this thesis two types of high-nitrogen ferrochromium are compared, a solid version and a powder cored wire. They are examined in crossection and 16 samples from four charges are examined with Pulse Distribution Analysis as well as systematic microscopy of polished cross sections. The PDA results missed smaller spinel inclusions shown in previous research to be detrimental. The wire form shows promise but more charges need to be evaluat
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Conference papers on the topic "Electro-Slag Remelting/ESR"

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Yao, Jun, and Jinping Suo. "Effect of Melting Processing on Tensile Properties and Microstructure of New RAFM Steel." In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-29724.

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All of the RAFM steels only safely used under 550°C, that is not enough for the next reactor. An new RAFM steel was melted by non-vacuum induction melting (VIM) and electro-slag remelting (ESR), followed by hot-forging and rolling into rods and plates. In this paper, we investigated the effect of thermal ageing treatment on tensile properties of the rods and plates. The microstructure was studied by OM (optics micrograph) and scanning electron microscopy (SEM). The results showed that by using the same heat treatment process, the tensile strength of the samples was 680MPa, the total elongation
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