Literatura científica selecionada sobre o tema "Moule de verrerie"
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Artigos de revistas sobre o assunto "Moule de verrerie"
Nague, Lionel Tematio, Emmanuel Mpondo Mpondo, Emmanuel Nnanga Nga, J. S. N. Foumane Maniepi, V. Soppo Lobe, J. A. Metego Ntsama, A. Minyem et al. "Fabrication des ovules de l’association Métronidazole-Clotrimazole à l’aide du beurre de karité utilisé comme excipient pour le traitement des infections génitales chez la femme". Journal Africain de Technologie Pharmaceutique et Biopharmacie (JATPB) 2, n.º 3 (20 de dezembro de 2023). http://dx.doi.org/10.57220/jatpb.v2i3.154.
Texto completo da fonteTeses / dissertações sobre o assunto "Moule de verrerie"
Lauridant, Timothée. "Etude métallurgique et propriétés autolubrifiantes de revêtements par cold spray sur moules de verrerie". Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASF006.
Texto completo da fonteNowadays, glassware molds (blank or final) for container manufacturing by blow and blow process or press and blow process are frequently and manually lubricated with graphite-based grease in order to facilitate the glass gob insertion onto the molds and avoid glass sticking on the metallic glass walls. Chpolansky Company studies the feasibility of self-lubrification composite coating mold surface to protect the mold from oxidation, to improve metal/glass contact and reduce or stop greasing. This greasing is poorly controlled and causes defects in production, and environment contamination. Cold spray coating of a Metallic Matrix Composite NiCr-TiO2 onto cast iron substrate is the material of study. Analysis of microstructure and mechanical properties showed that the coating respects industrial requirements. TiO2 additive is correctly inserted into the NiCr matrix. Small amount of porosity and no cracks are observed in as-sprayed condition. Ageing treatment at temperature between 500°C and 900°C does not modify coating quality but causes oxidation of NiCr, carburation, and recrystallisation of NiCr splats. This coating can protect glassware molds in glass container production process. Glass drop spreading analysis is lead on two batches of coated samples with two different surface quality. Tests put in evidence the limiting effect of defects generated by the cold spray process for glass/metal contact. With a good surface condition, glass spreading results on the cold spray layer remains inferior to spreading on greased cast iron reference
Kallas, Nada. "Contribution à l'étude du commerce de la côte syro-palestinienne dans la Méditerranée à l'époque romaine : le verre soufflé dans un moule". Paris 4, 2003. http://www.theses.fr/2003PA040181.
Texto completo da fonteThe invention of the blown glass, revolutionized the craft of the glass. The argument that the mold-blown preceded the free blowing is considered like being a new discovery in the history of the technical inflation. This technique of manufacture appears in the beginning of the first century and it is assigned to the workshops of the syro - palestinian coast, but it spread quickly to the rest of the empire. The present document aims to make a catalog regrouping the glasses blown in a mold, while classfying each object in relation to its shape and to its decor. The catalog regroups 1088 objects classified under 13 shapes of which each is divided in several types. The goal of this research is to study the production and the diffusion of this "luxurious" glass in the Roman world. The mold blown glasses were produced during the first six centuries of our era. This vessel was exported in the whole Mediterranean. However the vogue of the such glass did not last long. It seems to decline in the beginning of the second century, without, however, stopping completely
Bultel, Hélène. "Endommagement par fatigue d’un bimétal acier-nickel". Thesis, Lille 1, 2011. http://www.theses.fr/2011LIL10193/document.
Texto completo da fonteArc International, worldwide leader of tableware, has developed a research program concerning optimization of bimetallic glass mould making. This PhD thesis contributes to this project by answering and explaining some questions upon this project.First of all the thermal solicitation imposed to the moulds has been studied, which permitted localize the critical zones when it comes to thermal fatigue damaging. Metallographic analyses and fatigue tests led to prove that fatigue damaging initiates at the interface between the substrate composed of a soft steel and the coating composed of a nickel alloy, due to low cycle fatigue resistance of the substrate. An alternative material for the substrate part has been proposed, and the coating process impact on both materials has been studied. Coating process leads to changes in the microstructure of the component: the steels become ferritic-pearlitic, and the nickel alloy becomes a nickel-based solid solution matrix in which nickel borides are dispersed. An intermediate zone is formed, which is composed of two bands of solid solution resulting from nickel-iron interdiffusion.Fatigue resistance of the materials has been studied under strain control in a fully push-pull mode at 450°C; fatigue damage of 4130 steel is essentially due to cyclic accommodation of ferrite grains. Fatigue resistance of is very weak. Fatigue behaviour study of the assembly “substrate + coating” permitted to demonstrate the role of the intermediate zone in fatigue cracking mechanisms by identifying the crack initiation and propagation steps. At last, a finite elements model of cyclic mechanical damage has been put on, using a non linear cyclic elastoplastic model, in order to describe the damaging of the substrate material. A study has been carried on fatigue life prediction of a monolithic steel mould in certain conditions
Rocancourt, Norman. "Etude de solutions innovantes de dépôts de superalliages et traitements de surface pour augmenter la résistance à l'usure et le comportement des moules métalliques de verrerie". Thesis, Rouen, INSA, 2016. http://www.theses.fr/2016ISAM0014.
Texto completo da fonteGlass moulds have to withstand very high temperatures which can far exceed 650 °C during the glass forming process. They are exposed to very tough conditions such as abrasive wear and physico-chemical reactions, accentuated by thermal shocks due to high speed contact with hot glass melt. The aim of this work is to find innovative solutions for superalloy coating or surface treatments in order to increase the service life of glass tools. Three innovation projects are presented in this report. The first one is dedicated to PTA (Plasma Transferred Arc) welded coating of composite Co/NiB powder on copper alloy moulds. The second one is about technical feasibility of a multilayer PVD (Physical Vapor Deposition) coating with properties congruent to glass production in term of hardness and thermal stability, on AISI 431 plunger stainless steel. Last but not least, the third innovative project is about nitriding by ion implantation with multicharged nitrogen ions on AISI 431 stainless steel. We notice after ion implantation a significant hardness increase (+ 240 %). A multi-experimental and multi-scale approach was carried out in order to study the implanted material microstructure and its evolution after annealing at 650 °C during 1h to predict the material behavior during production and correlate it to hardness properties
Rocancourt, Norman. "Etude de solutions innovantes de dépôts de superalliages et traitements de surface pour augmenter la résistance à l'usure et le comportement des moules métalliques de verrerie". Electronic Thesis or Diss., Rouen, INSA, 2016. http://www.theses.fr/2016ISAM0014.
Texto completo da fonteGlass moulds have to withstand very high temperatures which can far exceed 650 °C during the glass forming process. They are exposed to very tough conditions such as abrasive wear and physico-chemical reactions, accentuated by thermal shocks due to high speed contact with hot glass melt. The aim of this work is to find innovative solutions for superalloy coating or surface treatments in order to increase the service life of glass tools. Three innovation projects are presented in this report. The first one is dedicated to PTA (Plasma Transferred Arc) welded coating of composite Co/NiB powder on copper alloy moulds. The second one is about technical feasibility of a multilayer PVD (Physical Vapor Deposition) coating with properties congruent to glass production in term of hardness and thermal stability, on AISI 431 plunger stainless steel. Last but not least, the third innovative project is about nitriding by ion implantation with multicharged nitrogen ions on AISI 431 stainless steel. We notice after ion implantation a significant hardness increase (+ 240 %). A multi-experimental and multi-scale approach was carried out in order to study the implanted material microstructure and its evolution after annealing at 650 °C during 1h to predict the material behavior during production and correlate it to hardness properties
Bourahima, Fazati. "Évolutions microstructurales et défauts générés par laser cladding lors du dépôt de Ni sur des moules de verrerie en alliage de Cu-Ni-Al et en fonte GL". Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS017/document.
Texto completo da fonteIn glass industry, the laser cladding is an innovative surfacing technique allowing to deposit a very thin layer of nickel to protect glass mold (useful for glass bottle production) against corrosion, abrasion and thermal fatigue. This method (powder fusion by projection) is well known in additive manufacturing. The aim of this work is to observe the impact of the laser cladding on the coating behavior but also on the Cu-Ni-Al and flake-graphite cast iron substrates. The microstructure and the mechanical properties were studied (SEM and microanalysis, microhardness, residual stress …) around the interface cladding/substrate. The work was also focused on the defects like lack of bonding but also on cracking behavior during surfacing on cast iron. The purpose was to prevent from those defects. This work showed that the lack of bonding to the Cu-Ni-Al substrate is due to the gaussian distribution of the powder which attenuates the input laser power at its peak. The lack of bonding is not detected on cast iron substrate thanks to its high absorptivity and low thermal conductivity. Nevertheless, cracks can be observed due to thermal residual stresses and the presence of a thermal affected zone. The ANOVA technique allowed us to optimize the processing parameters in order to obtain a perfect bonding and the geometry wanted by CHPOLANSKY Establishments
Bultel, Hélène. "Endommagement par fatigue d’un bimétal acier-nickel". Electronic Thesis or Diss., Lille 1, 2011. http://www.theses.fr/2011LIL10193.
Texto completo da fonteArc International, worldwide leader of tableware, has developed a research program concerning optimization of bimetallic glass mould making. This PhD thesis contributes to this project by answering and explaining some questions upon this project.First of all the thermal solicitation imposed to the moulds has been studied, which permitted localize the critical zones when it comes to thermal fatigue damaging. Metallographic analyses and fatigue tests led to prove that fatigue damaging initiates at the interface between the substrate composed of a soft steel and the coating composed of a nickel alloy, due to low cycle fatigue resistance of the substrate. An alternative material for the substrate part has been proposed, and the coating process impact on both materials has been studied. Coating process leads to changes in the microstructure of the component: the steels become ferritic-pearlitic, and the nickel alloy becomes a nickel-based solid solution matrix in which nickel borides are dispersed. An intermediate zone is formed, which is composed of two bands of solid solution resulting from nickel-iron interdiffusion.Fatigue resistance of the materials has been studied under strain control in a fully push-pull mode at 450°C; fatigue damage of 4130 steel is essentially due to cyclic accommodation of ferrite grains. Fatigue resistance of is very weak. Fatigue behaviour study of the assembly “substrate + coating” permitted to demonstrate the role of the intermediate zone in fatigue cracking mechanisms by identifying the crack initiation and propagation steps. At last, a finite elements model of cyclic mechanical damage has been put on, using a non linear cyclic elastoplastic model, in order to describe the damaging of the substrate material. A study has been carried on fatigue life prediction of a monolithic steel mould in certain conditions