effect of crucible material for ingot casting on
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There is an inherent difference between the cold forming properties of low-alloy high-strength steel and carbon structural steel. First of all, a certain amount of permanent deformation of low-alloy high-strength steel requires greater force than effect of crucible material for ingot casting on, carbon structural steel of the same size. Second, when low-alloy high-strength steel is formed, a slightly larger allowable amount for springback should be given. According to experience, unless the low-alloy high-strength steel is processed to control the shape of inclusions, it is necessary to use a larger bending radius than carbon structural steel during cold forming.
For example, when you know the metal capacity your furnace was designed for, you will know what capacity your crucible should provide. Similarly, the dimensions of the space for the crucible in your furnace will dictate the dimensions and shape of your crucible. This also will determine if your crucible must include a pouring spout.See all results for this questionWhat is a good impact resistant crucible?Crucibles featuring high carbon content and a directionally oriented graphite structure provide excellent impact resistance. You also will want a crucible with a durable protective glaze. Damage to the glaze from rough handling can lead to oxidation damage to the crucible.See all results for this questionWhat is a crucible and why is it bad?The foundry crucible has to be solid enough to withstand the high temperature without breaking. A bad crucible could result in loosing all the molten metal at the bottom of the furnace. There are different types of commercial crucibles such as clay graphite crucibles, silicon carbide crucibles, effect of crucible material for ingot casting onSee all results for this question
After smelting, the crucible is removed from the furnace and the steel is poured into ingot molds. The crucible steel process is one of the oldest documented methods of producing steel and, although it has been replaced with more efficient methods, is still used to produce small quantities of high quality materials for specialized applications.What causes gas to trap in the Crucible?Turbulent flow of the casting material through the system may cause it to trap gas from the air. Gases may be trapped from material or the atmosphere in the crucible when the melt is being prepared.See all results for this questionThe effect of sintering temperature of Si 3 N 4 effect of crucible material for ingot casting onJul 24, 2020 · Multicrystalline silicon is widely used in solar cell production. Silicon nitride is commonly applied as a coating material for the silica crucibles utilized for the growth of multicrystalline silicon by directional solidification. In this work, we will study the effect of the sintering temperature of the Si 3 N 4 coating applied to the photovoltaic solar crucible on the adhesion strength of the Si 3 N 4 coating in Author: Messaouda Ayachi, Sabiha Anas Boussaa, Yacine Chettat, Abdelhak Benkrid, Amar ManseriPublish Year: 2020
The effect of diffusion barrier on minority carrier effect of crucible material for ingot casting on
Jul 01, 2020 · Usually, the disposable silica crucible used for cast has a purity of not higher than 99.9% due to cost limit, and the purity of silicon nitride coating is also price-sensitive. As a result, crucible and coating usually cause the generation of low lifetime regions at ingot bottom and edges.Author: Huali Zhang, Dongli Hu, Dejing Zhong, Chunlai Huang, Shuai Yuan, Da You, Xiang Zhang, Yuepeng WanPublish Year: 2020THE INFLUENCE OF VIM CRUCIBLE COMPOSITION, cibles produced ingot material having the lowest oxide content whereas zirconia crucibles resulted in the highest oxide con- tent. Vacuum arc remelting was shown to have little or no effect on reducing the oxide content of the starting ingot, whereas ESR was shown to significantly reduce oxide content.THE EFFECT OF CRUCIBLE COATING AND THE the effect of crucible coating and the temperature field on minority carrier LIFETIME IN DIRECTIONALLY SOLIDIFIED MULTICRYSTALLINE SILICON INGOTS Birgit Ryningen 1,* ,
Numerical Investigation of the Influence of Material effect of crucible material for ingot casting on
Nov 19, 2008 · We carried out calculations to investigate the influence of thermal conductivity of the wall of a crucible on meltcrystal interface shape using three-dimensional global analyses. It was found that thermal conductivity of the wall of a crucible has significant influence on the meltcrystal interface shape due to modification of the amount of outgoing heat flux through the wall of a effect of crucible material for ingot casting onMatching Your Crucible to Your Application | Morgan Molten effect of crucible material for ingot casting onDamage to the glaze from rough handling can lead to oxidation damage to the crucible. Extruded aluminum ingots often have sharp edges that cut deeply into a crucibles body leading to damaging cracks. Fluxes and Additives. All crucibles offer some level Influence of Crucible Thermal Conductivity on Crystal effect of crucible material for ingot casting onMar 20, 2016 · The crucible thermal conductivity is varied in a reasonable range to investigate its influence on the global heat transfer and silicon crystal growth. It is found that the crucible plays an important role in heat transfer, and therefore its thermal conductivity can influence the crystal growth significantly in the entire DS process.Cited by: 5Publish Year: 2016Author: Zaoyang Li, Lijun Liu, Yunfeng Zhang, Genshu Zhou
Growth of High-Quality Multicrystalline Silicon Ingot effect of crucible material for ingot casting on
the picture of the crucible after spraying (Fig. 1a) and the enlarged morphology of the silicon nitride coated seeds on the bottom of the crucible (Fig. 1b), respectively. 2.2 Crystal Growth and Analysis An industrial furnace of Jinggong JJL500 directional solidification system was used for ingot cast in this experiment. The Si feedstock chargeFabrication of silicon ingot by CCCC methodthe center of the charge. This force repels the liquid from the crucible wall (known as pinch effect). However, since CMCC process uses a water-cooled cold crucible, it has difficulties in continuously melting and casting silicon into a high-purity ingot. Silicon has a high cooling effect by radiant heat emission due to aEffects of melting parameters and quartz purity on silica effect of crucible material for ingot casting onMar 06, 2020 · The inner transparent layer is almost completely transparent, and because this layer is in direct contact with the silicon melt, it is important to keep it free from bubbles throughout the Cz process to ensure that fewer bubbles are released into the melt and subsequently into the silicon ingot. The silica crucible, which is in direct contact with liquid silicon, has an important impact on the quality of Some results are removed in response to a notice of local law requirement. For more information, please see here.
Effect of the Silicon Nitride Coating of Quartz Crucible effect of crucible material for ingot casting on
Aug 27, 2012 · The results can be summarized as follows: The impurities contained in Si ingots, including Fe, Ca, Mn, Cu, P, and B, were found to decrease at varying degrees when the inner surface of the quartz crucible was coated with Si 3 N 4. A mixed layer composted by Si 3 N 4 and Si was observed on the surface of the Si ingot. This mixed layer provided microdefects for the nucleation of metallic Cited by: 4Publish Year: 2013Author: Jiayan Li, Mei Liu, Yi Tan, Lishi WenEffect of parameters on the grain growth of silicon ingots effect of crucible material for ingot casting onOct 01, 2011 · In this paper silicon ingots were continuously and directionally solidified by electromagnetic casting (EMC). A group of orthogonal experiments were completed to investigate the effects of input power, withdrawal velocity and initial heat preservation time on the grain growth of silicon ingots. The results showed that all of the deviating angle ( ), the convex height of the solid/liquid (S/L effect of crucible material for ingot casting onCited by: 11Publish Year: 2011Author: Ruirun Chen, Feng Huang, Jingjie Guo, Hongsheng Ding, Yanqing Su, Jieren Yang, Hengzhi FuEffect of parameters on the grain growth of silicon ingots effect of crucible material for ingot casting onOct 01, 2011 · During the process of cold crucible continuous melting and preparing silicon ingot, induction heat that released in the surface layer (skin effect) can partially compensate the loss of lateral heat transfer, which is beneficial to get a planar S/L interface and keep steady growing of silicon grains.Cited by: 11Publish Year: 2011Author: Ruirun Chen, Feng Huang, Jingjie Guo, Hongsheng Ding, Yanqing Su, Jieren Yang, Hengzhi Fu
Weathering steel has good resistance to atmospheric corrosion. Although the initial investment cost of weathering steel is slightly higher than that of ordinary carbon steel. Compared with methods such as spraying anticorrosive coating on the surface of ordinary carbon steel, the later maintenance costs of ordinary carbon steel are weathering steel. 1.5-2 times. Therefore, effect of crucible material for ingot casting on weathering steel can reduce environmental pollution and is a key promotion technology for energy saving and emission reduction. Most domestic weathering steels are painted and used, and their original intentions of no-painting and "rust prevention" have not been exerted to a greater extent.