{"title":"Rules of Calculating Old Age Pension on the Hungarian Pension System","authors":"Tivadar Dezse","doi":"10.26649/musci.2019.059","DOIUrl":"https://doi.org/10.26649/musci.2019.059","url":null,"abstract":"","PeriodicalId":340250,"journal":{"name":"MultiScience - XXXIII. microCAD International Multidisciplinary Scientific Conference","volume":"162 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127957983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The electron beam welding (EBW) sets new standards as it facilitates very high quality and effective welding of high strength structural steels. The technology ensures high-quality critical welded joints in thicker structural metals. It has a high energy density in comparison to the conventional arc welding processes (e.g. GMAW). As a result of less overall energy input and higher velocity, the effect of welding on the base material in the heat-affected zone (HAZ) and the distortion is much smaller compared to conventional arc welding processes. The low heat input result in a small HAZ and a reduced extension of critical HAZ areas which can be favourable in high strength steels when the mechanical properties can drastically decrease in the HAZ. In comparison with experimental studies, a numerical modelling study can provide detailed information concerning the welding process and parameters, and the number of costly experiments can be reduced. Finite element modelling (FEM) of EBW enables the estimation of temperature field, time temperature curve, weld pool geometry and welding distortion etc. The determination of the temperature field can be very useful in terms of the further investigations since the t8/5 cooling time can be less than 2 s during EBW. In this paper, by the application of Sysweld software, the time-temperature curve was determined and the physical simulation of the critical HAZ subzones were performed using a GLEEBLE 3500 physical simulator in order to analyse the properties of HAZ during extremely short cooling time.
{"title":"Investigation of Electron Beam Welding of AHSS by Physical and Numerical Simulation","authors":"R. Sisodia, M. Marcell","doi":"10.26649/musci.2019.051","DOIUrl":"https://doi.org/10.26649/musci.2019.051","url":null,"abstract":"The electron beam welding (EBW) sets new standards as it facilitates very high quality and effective welding of high strength structural steels. The technology ensures high-quality critical welded joints in thicker structural metals. It has a high energy density in comparison to the conventional arc welding processes (e.g. GMAW). As a result of less overall energy input and higher velocity, the effect of welding on the base material in the heat-affected zone (HAZ) and the distortion is much smaller compared to conventional arc welding processes. The low heat input result in a small HAZ and a reduced extension of critical HAZ areas which can be favourable in high strength steels when the mechanical properties can drastically decrease in the HAZ. In comparison with experimental studies, a numerical modelling study can provide detailed information concerning the welding process and parameters, and the number of costly experiments can be reduced. Finite element modelling (FEM) of EBW enables the estimation of temperature field, time temperature curve, weld pool geometry and welding distortion etc. The determination of the temperature field can be very useful in terms of the further investigations since the t8/5 cooling time can be less than 2 s during EBW. In this paper, by the application of Sysweld software, the time-temperature curve was determined and the physical simulation of the critical HAZ subzones were performed using a GLEEBLE 3500 physical simulator in order to analyse the properties of HAZ during extremely short cooling time.","PeriodicalId":340250,"journal":{"name":"MultiScience - XXXIII. microCAD International Multidisciplinary Scientific Conference","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116446730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The salt content in the secondary dross obtained beside the recovered aluminium by the hot processing of the primary melting dross hinders further utilization of this material. Secondary dross samples obtained from the industrial hot processing of the primary dross generated by the melting of aluminium alloy scrap were leached with water at room temperature with different Liquid/Solid (L:S) ratios. Vessel filling (the relative volume occupied by the sludge) in the shaking bottles required further consideration in the interpretation of the results. Samples taken regularly within 15 minutes during vigorous shaking showed that NaCl and KCl can be dissolved almost instantly, and completely irrespective of the parameter settings. However, the fluoride additive (CaF2) has a complex behaviour. The results suggest its relation to some side reactions indicating also the conditions of the hot process producing the examined material. The results suggest that the salt content of the secondary aluminium dross can be lixiviated within a 2 – 4 minutes virtually completely, but the L:S ratio and the a vessel filling have to be coordinated. At the lowest L:S ratio examined of 1.0, a vessel filling of max. 11% should be observed to achieve this fast salt dissolution. The same dissolution rate can be reached with double the vessel filling (i.e. smaller unit) if the L:S is also increased in this ratio.
{"title":"The Fundamental Kinetic Characteristics of Aqueous Dissolution of Chloride and Fluoride Salts from Secondary Aluminium Dross","authors":"I. Illés, M. Sassi, H. Zakiyya, T. Kékesi","doi":"10.26649/musci.2019.083","DOIUrl":"https://doi.org/10.26649/musci.2019.083","url":null,"abstract":"The salt content in the secondary dross obtained beside the recovered aluminium by the hot processing of the primary melting dross hinders further utilization of this material. Secondary dross samples obtained from the industrial hot processing of the primary dross generated by the melting of aluminium alloy scrap were leached with water at room temperature with different Liquid/Solid (L:S) ratios. Vessel filling (the relative volume occupied by the sludge) in the shaking bottles required further consideration in the interpretation of the results. Samples taken regularly within 15 minutes during vigorous shaking showed that NaCl and KCl can be dissolved almost instantly, and completely irrespective of the parameter settings. However, the fluoride additive (CaF2) has a complex behaviour. The results suggest its relation to some side reactions indicating also the conditions of the hot process producing the examined material. The results suggest that the salt content of the secondary aluminium dross can be lixiviated within a 2 – 4 minutes virtually completely, but the L:S ratio and the a vessel filling have to be coordinated. At the lowest L:S ratio examined of 1.0, a vessel filling of max. 11% should be observed to achieve this fast salt dissolution. The same dissolution rate can be reached with double the vessel filling (i.e. smaller unit) if the L:S is also increased in this ratio.","PeriodicalId":340250,"journal":{"name":"MultiScience - XXXIII. microCAD International Multidisciplinary Scientific Conference","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114856167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Welding Point Optimization","authors":"Marilyn R. Ternay","doi":"10.26649/musci.2019.030","DOIUrl":"https://doi.org/10.26649/musci.2019.030","url":null,"abstract":"","PeriodicalId":340250,"journal":{"name":"MultiScience - XXXIII. microCAD International Multidisciplinary Scientific Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127571616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nowadays more and more vast cities and facilities are built but we don’t have enough knowledge to orientate ourselves in them. That is why navigation systems were created to relieve our lives. Even if GPS-based outdoor navigation systems are accurate and useful methods, yet, we don’t have any precise and widespread techniques for indoors navigations. On account of the monumental complexes we have indoor navigation systems are must-have. These can be a helping hand for visually impaired people who, due to their situation, have different expectations for such a system. Of course, only graphical user interface is not enough to be useful but the options displayed on the screen should also be translated into sounds. Moreover, visually impaired people need to get more information about the environment where they are.
{"title":"Data Collector Application for Indoor Navigation System","authors":"Dávid Bozó","doi":"10.26649/musci.2019.020","DOIUrl":"https://doi.org/10.26649/musci.2019.020","url":null,"abstract":"Nowadays more and more vast cities and facilities are built but we don’t have enough knowledge to orientate ourselves in them. That is why navigation systems were created to relieve our lives. Even if GPS-based outdoor navigation systems are accurate and useful methods, yet, we don’t have any precise and widespread techniques for indoors navigations. On account of the monumental complexes we have indoor navigation systems are must-have. These can be a helping hand for visually impaired people who, due to their situation, have different expectations for such a system. Of course, only graphical user interface is not enough to be useful but the options displayed on the screen should also be translated into sounds. Moreover, visually impaired people need to get more information about the environment where they are.","PeriodicalId":340250,"journal":{"name":"MultiScience - XXXIII. microCAD International Multidisciplinary Scientific Conference","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127584055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Continuous analysis of the corporate environment is key to executives with a strategic approach to companies. However, analysing the company's environment can not only be relevant to the individual entity but can also provide valuable information to researchers and professionals looking at the industry and the trends that can be observed there. The author's research focus is on district heat suppliers. The purpose of this study is to measure the new aspects of district heat suppliers' industry specificities with the application of Porter's five forces analysis and to gather the factors that may affect the asset, financial and income position of companies.
{"title":"Porter's Five Forces Analysis of the District Heat Sector","authors":"G. Süveges","doi":"10.26649/musci.2019.070","DOIUrl":"https://doi.org/10.26649/musci.2019.070","url":null,"abstract":"Continuous analysis of the corporate environment is key to executives with a strategic approach to companies. However, analysing the company's environment can not only be relevant to the individual entity but can also provide valuable information to researchers and professionals looking at the industry and the trends that can be observed there. The author's research focus is on district heat suppliers. The purpose of this study is to measure the new aspects of district heat suppliers' industry specificities with the application of Porter's five forces analysis and to gather the factors that may affect the asset, financial and income position of companies.","PeriodicalId":340250,"journal":{"name":"MultiScience - XXXIII. microCAD International Multidisciplinary Scientific Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122443654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Development of Innovative, Lighting Pavings by Researching Luminescent Additives and Developing Their Unique Manufacturing Technology","authors":"Viktor Csókai, A. Kiss","doi":"10.26649/musci.2019.100","DOIUrl":"https://doi.org/10.26649/musci.2019.100","url":null,"abstract":"","PeriodicalId":340250,"journal":{"name":"MultiScience - XXXIII. microCAD International Multidisciplinary Scientific Conference","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134572808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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