Ferritic steels are used in applications that require good thermal conductivity and/or durability in operation involving heat cycles. They are easy to process due to their high ductility and have magnetic properties.
The paper presents a series of experimental research on the manufacture of sintered products obtained from 410 stainless steel powder and their characterization from the microstructural and wear resistance point of view.
{"title":"Research on Obtaining Sintered Materials From 410 Stainless Steel Powder","authors":"Simona BOICIUC","doi":"10.35219/mms.2023.2.01","DOIUrl":"https://doi.org/10.35219/mms.2023.2.01","url":null,"abstract":"Ferritic steels are used in applications that require good thermal conductivity and/or durability in operation involving heat cycles. They are easy to process due to their high ductility and have magnetic properties.
 The paper presents a series of experimental research on the manufacture of sintered products obtained from 410 stainless steel powder and their characterization from the microstructural and wear resistance point of view.
","PeriodicalId":22358,"journal":{"name":"The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135860798","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}
Sorin Alexandru FICĂ, Andrei DIMITRESCU, Claudiu BABIȘ
It presents an element of absolute novelty for industrial scientific research in Romania, the fact that the housing of the washing head and other landmarks of the washing head from the FA100 water well drilling installations. FA125, FH150 and FG40 were made by additive manufacturing by 3D printing with PETG and ABS+ filament.
{"title":"Additive Manufacturing Through 3D Printing FDM-Fused Deposit Modeling of Lubrication Ring","authors":"Sorin Alexandru FICĂ, Andrei DIMITRESCU, Claudiu BABIȘ","doi":"10.35219/mms.2023.2.06","DOIUrl":"https://doi.org/10.35219/mms.2023.2.06","url":null,"abstract":"It presents an element of absolute novelty for industrial scientific research in Romania, the fact that the housing of the washing head and other landmarks of the washing head from the FA100 water well drilling installations. FA125, FH150 and FG40 were made by additive manufacturing by 3D printing with PETG and ABS+ filament.
","PeriodicalId":22358,"journal":{"name":"The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135860537","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}
Sorin Alexandru FICĂ, Claudiu BABIȘ, Andrei DIMITRESCU
This work deals with the additive manufacturing by 3D printing of the Gas Reduction R2-M60x2 landmark which is part of the Gas Reduction R2-Hose DN 2 in subassembly. This sub-assembly is a component part of the washing head of the light water well drilling installations FA 100, FA 125, FH 150 and FG 40. The generic name of the washing head will be FA 100. We use 3D printing technology because, on the one hand, it is technically possible to make the part and on the other hand, for economic reasons. It is approximately ten times cheaper to make the part through 3D printing than through conventional technologies.
{"title":"Additive Manufacturing by 3D Printing of the Landmark Gas Reduction R2-M60x2, Using ABS+ Filament","authors":"Sorin Alexandru FICĂ, Claudiu BABIȘ, Andrei DIMITRESCU","doi":"10.35219/mms.2023.2.07","DOIUrl":"https://doi.org/10.35219/mms.2023.2.07","url":null,"abstract":"This work deals with the additive manufacturing by 3D printing of the Gas Reduction R2-M60x2 landmark which is part of the Gas Reduction R2-Hose DN 2 in subassembly. This sub-assembly is a component part of the washing head of the light water well drilling installations FA 100, FA 125, FH 150 and FG 40. The generic name of the washing head will be FA 100. We use 3D printing technology because, on the one hand, it is technically possible to make the part and on the other hand, for economic reasons. It is approximately ten times cheaper to make the part through 3D printing than through conventional technologies.
","PeriodicalId":22358,"journal":{"name":"The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135860535","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}
In this work rice oil was tested when it is dripped onto a high temperature surface. The tests conducted determined the lowest temperature at which rice oil ignited and the highest temperature at which rice oil did not ignite in three tests conducted at the same temperature. The results of this study show that the values of the evaluated temperatures are of major importance regarding the use of rice oil as an eco-friendly lubricant. Thus, the highest temperature at which rice oil did not ignites is 465 °C, while the lowest temperature at which rice oil ignited is 470 °C. Moreover, at the end of the 8 tests performed, part of the oils collected in the tray of the installations used in the present study were subjected to spectrophotometric tests. Based on the obtained data, the transmittance spectra were plotted and the trichromatic components and coordinates were calculated, as well as the colour differences of the tested oils.
{"title":"Research on the Rice Bran Oil – Flammability Tests on a High Temperature Surface","authors":"Liviu Cătălin ȘOLEA, Romică CREȚU","doi":"10.35219/mms.2023.2.02","DOIUrl":"https://doi.org/10.35219/mms.2023.2.02","url":null,"abstract":"In this work rice oil was tested when it is dripped onto a high temperature surface. The tests conducted determined the lowest temperature at which rice oil ignited and the highest temperature at which rice oil did not ignite in three tests conducted at the same temperature. The results of this study show that the values of the evaluated temperatures are of major importance regarding the use of rice oil as an eco-friendly lubricant. Thus, the highest temperature at which rice oil did not ignites is 465 °C, while the lowest temperature at which rice oil ignited is 470 °C. Moreover, at the end of the 8 tests performed, part of the oils collected in the tray of the installations used in the present study were subjected to spectrophotometric tests. Based on the obtained data, the transmittance spectra were plotted and the trichromatic components and coordinates were calculated, as well as the colour differences of the tested oils.
","PeriodicalId":22358,"journal":{"name":"The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135860538","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 paper aims to present a bibliographic study of works on the characterization of materials, for mosques and historical minarets, using destructive methods (uniaxial compression, tension direct and indirect), and non-destructive testing (Schmidt rebound hardness, ultrasonic pulse velocity (UPV), scanning electron microscope (SEM) and X-ray diffraction (XRD) and their usefulness in the field of protection built cultural heritage. These religious buildings usually are constructed of brick masonry, stone, or/and reinforced cement concrete. Further, the form and amount of a structural defect is a function of the environment to which the structure is subjected. The different techniques used, for various construction materials, have determined the following parameters: the surface hardness, pulse velocity, structural composition, compressive strength, tensile strength and chemical composition. In general, these parameters govern the behavior under the different actions, and contribute to the strengthening and protection of the structure.
{"title":"Advanced Methods to Characterize the Structural Materials of Religious Buildings Construction","authors":"Kaoutar CHOUGRANI, Adriana Gabriela SCHIOPU, Mimoun CHOURAK","doi":"10.35219/mms.2023.2.03","DOIUrl":"https://doi.org/10.35219/mms.2023.2.03","url":null,"abstract":"The paper aims to present a bibliographic study of works on the characterization of materials, for mosques and historical minarets, using destructive methods (uniaxial compression, tension direct and indirect), and non-destructive testing (Schmidt rebound hardness, ultrasonic pulse velocity (UPV), scanning electron microscope (SEM) and X-ray diffraction (XRD) and their usefulness in the field of protection built cultural heritage. These religious buildings usually are constructed of brick masonry, stone, or/and reinforced cement concrete. Further, the form and amount of a structural defect is a function of the environment to which the structure is subjected. The different techniques used, for various construction materials, have determined the following parameters: the surface hardness, pulse velocity, structural composition, compressive strength, tensile strength and chemical composition. In general, these parameters govern the behavior under the different actions, and contribute to the strengthening and protection of the structure.
","PeriodicalId":22358,"journal":{"name":"The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135860536","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}
Sorin Alexandru FICĂ, Claudiu BABIȘ, Andrei DIMITRESCU
This paper deals with the additive manufacturing by 3D printing of the Hose Pipe DN 50 landmark which is part of the Gas Reduction R2-Hose DN 2 in subassembly. This sub-assembly is a component part of the washing head of the light water well drilling installations FA 100, FA 125, FH 150 and FG 40. The generic name of the washing head will be FA 100. We use 3D printing technology because, on the one hand, it is technically possible to make the part and on the other hand, for economic reasons. It is approximately ten times cheaper to make the part through 3D printing than through conventional technologies.
{"title":"Additive Manufacturing Through 3D Printing of the Mark HOS Pipe DN 50, Using ABS+ Filament","authors":"Sorin Alexandru FICĂ, Claudiu BABIȘ, Andrei DIMITRESCU","doi":"10.35219/mms.2023.2.09","DOIUrl":"https://doi.org/10.35219/mms.2023.2.09","url":null,"abstract":"This paper deals with the additive manufacturing by 3D printing of the Hose Pipe DN 50 landmark which is part of the Gas Reduction R2-Hose DN 2 in subassembly. This sub-assembly is a component part of the washing head of the light water well drilling installations FA 100, FA 125, FH 150 and FG 40. The generic name of the washing head will be FA 100. We use 3D printing technology because, on the one hand, it is technically possible to make the part and on the other hand, for economic reasons. It is approximately ten times cheaper to make the part through 3D printing than through conventional technologies.
","PeriodicalId":22358,"journal":{"name":"The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135860789","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}
Sorin Alexandru FICĂ, Claudiu BABIȘ, Andrei DIMITRESCU
This paper deals with the additive manufacturing by 3D printing of the Dutch Nut-M60x2 landmark which is part of the subassembly Gas Reducer R2-Hose DN 2 in. This subassembly is a component part of the washing head of the light water well drilling installations FA 100, FA 125, FH 150 and FG 40. The generic name of the washing head will be FA 100.We use 3D printing technology because, on the one hand, it is technically possible to make the part and on the other hand, for economic reasons. It is approximately ten times cheaper to make the part through 3D printing than through conventional technologies.
{"title":"Additive Manufacturing Through 3D Printing of the Landmark Nut M60x2, Using ABS+ Filament","authors":"Sorin Alexandru FICĂ, Claudiu BABIȘ, Andrei DIMITRESCU","doi":"10.35219/mms.2023.2.08","DOIUrl":"https://doi.org/10.35219/mms.2023.2.08","url":null,"abstract":"This paper deals with the additive manufacturing by 3D printing of the Dutch Nut-M60x2 landmark which is part of the subassembly Gas Reducer R2-Hose DN 2 in. This subassembly is a component part of the washing head of the light water well drilling installations FA 100, FA 125, FH 150 and FG 40. The generic name of the washing head will be FA 100.We use 3D printing technology because, on the one hand, it is technically possible to make the part and on the other hand, for economic reasons. It is approximately ten times cheaper to make the part through 3D printing than through conventional technologies.","PeriodicalId":22358,"journal":{"name":"The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135860785","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}
Sorin Alexandru FICĂ, Andrei DIMITRESCU, Claudiu BABIȘ
The washing head is the most important sub-assembly in a water well drilling installation, and ensures the operation of the installation on the principle of "hydraulic rotary drilling with direct circulation of drilling fluid", whereby, inside the rotating drill rod assembly is injected, through the washhead, drilling fluid from the discharge of the drilling mud pump, which is fed from a pit (pit) dug below ground level.
{"title":"Construction of the FH 150 Hydro-Geological Drilling Facility with Additive Manufactured Markers Through 3D Printing","authors":"Sorin Alexandru FICĂ, Andrei DIMITRESCU, Claudiu BABIȘ","doi":"10.35219/mms.2023.2.04","DOIUrl":"https://doi.org/10.35219/mms.2023.2.04","url":null,"abstract":"The washing head is the most important sub-assembly in a water well drilling installation, and ensures the operation of the installation on the principle of \"hydraulic rotary drilling with direct circulation of drilling fluid\", whereby, inside the rotating drill rod assembly is injected, through the washhead, drilling fluid from the discharge of the drilling mud pump, which is fed from a pit (pit) dug below ground level.
","PeriodicalId":22358,"journal":{"name":"The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135860788","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}
Sorin Alexandru FICĂ, Andrei DIMITRESCU, Claudiu BABIȘ
In this work, it is proposed to make by additive manufacturing through 3D printing with FDM technology FDM (Fused Deposition Modeling - Modeling by Depositing Fusible Filament) some landmarks of the washing head which is common to the light water well drilling rigs FA100, FA125, FH150 and FG40.
A washing head like the FA100 washing head, which has the casing and the drilling fluid supply fittings, 3D printed from PETG and ABS+ filament, has never been made in Romania.
The main advantages of using this manufacturing technology are that by purchasing such equipment, a large number of different landmarks can be made and the final price of the landmark.
{"title":"Additive Manufacturing Through 3D Printing FDM-Fused Deposit Modeling of Top Cover","authors":"Sorin Alexandru FICĂ, Andrei DIMITRESCU, Claudiu BABIȘ","doi":"10.35219/mms.2023.2.05","DOIUrl":"https://doi.org/10.35219/mms.2023.2.05","url":null,"abstract":"In this work, it is proposed to make by additive manufacturing through 3D printing with FDM technology FDM (Fused Deposition Modeling - Modeling by Depositing Fusible Filament) some landmarks of the washing head which is common to the light water well drilling rigs FA100, FA125, FH150 and FG40.
 A washing head like the FA100 washing head, which has the casing and the drilling fluid supply fittings, 3D printed from PETG and ABS+ filament, has never been made in Romania.
 The main advantages of using this manufacturing technology are that by purchasing such equipment, a large number of different landmarks can be made and the final price of the landmark.
","PeriodicalId":22358,"journal":{"name":"The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135859322","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}
Y. L. Shuaib-Babata, Israel Victor Ayinde, Yusuf Olanrewaju Busari, Mubarak Oloduowo Ameen, R. A. Yahya, I. O. Ambali, Ishaaq Na’allah Aremu, S. O. Abdulraman, Kabiru Suleiman Ajao, Abdulateef Alabi Garuba
Each of Prosopis Africana pod extract (PAPE) and Citrulluslanatus (WMPE) performed quite well as green inhibitors in the electrochemical corrosion in acidic solution at ambient temperature in previous research. However, the hybridization of these compounds was varied with the concentration ratio in this study to optimize the efficiency of the green inhibitor in a hydrochloric acid medium using mild steel. The extraction process of the inhibitor samples was carried out with the Soxhlet apparatus using n-hexane as the solvent. Furthermore, the potential inhibition efficiency was monitored using various corrosion measurement techniques at room temperature. The inhibitive response of the extracts could be attributed to the adsorption of the extracts’ components on mild steel surface by physisorption mechanism according to the Langmuir adsorption isotherm model. The results revealed that inhibition efficiency (IE%) depends on the concentration of the extracts. The peak IE% values were obtained with a hybrid ratio of 3:1 (PAPE: WMPE) for gravimetric technique. The Tafel polarization and gasometrical measurement technique is 96.7%, 98.5% and 83.1% respectively at the concentration of 1.0 g/L, which are above the peak IE% for PAPE (93.7%, 80.96% and 77.8%) and WMPE (92.7%, 80.5% and 75.6%).
在以往的研究中，非洲Prosopis Africana pod extract (PAPE)和Citrulluslanatus (WMPE)在常温酸性溶液中均表现出良好的绿色缓蚀剂作用。然而，在本研究中，这些化合物的杂化随浓度比的变化而变化，以优化绿色抑制剂在盐酸介质中使用低碳钢的效率。以正己烷为溶剂，用索氏仪对缓蚀剂样品进行萃取。此外，在室温下，使用各种腐蚀测量技术监测了潜在的缓蚀效率。根据Langmuir吸附等温线模型，提取物的抑制作用可归因于提取物成分在低碳钢表面的物理吸附机制。结果表明，抑制率(IE%)与提取物的浓度有关。以3∶1的混合比(PAPE: WMPE)获得了重测技术的峰值IE%值。在1.0 g/L浓度下，Tafel偏振法和气相法分别为96.7%、98.5%和83.1%，均高于PAPE(93.7%、80.96%和77.8%)和WMPE(92.7%、80.5%和75.6%)的峰值IE%。
{"title":"Corrosion Inhibition Efficacy of Hybrid Organic Extracts from Prosopisafricana and Citrulluslanatus on Mild Steel in Acidic Medium","authors":"Y. L. Shuaib-Babata, Israel Victor Ayinde, Yusuf Olanrewaju Busari, Mubarak Oloduowo Ameen, R. A. Yahya, I. O. Ambali, Ishaaq Na’allah Aremu, S. O. Abdulraman, Kabiru Suleiman Ajao, Abdulateef Alabi Garuba","doi":"10.35219/mms.2023.1.04","DOIUrl":"https://doi.org/10.35219/mms.2023.1.04","url":null,"abstract":"Each of Prosopis Africana pod extract (PAPE) and Citrulluslanatus (WMPE) performed quite well as green inhibitors in the electrochemical corrosion in acidic solution at ambient temperature in previous research. However, the hybridization of these compounds was varied with the concentration ratio in this study to optimize the efficiency of the green inhibitor in a hydrochloric acid medium using mild steel. The extraction process of the inhibitor samples was carried out with the Soxhlet apparatus using n-hexane as the solvent. Furthermore, the potential inhibition efficiency was monitored using various corrosion measurement techniques at room temperature. The inhibitive response of the extracts could be attributed to the adsorption of the extracts’ components on mild steel surface by physisorption mechanism according to the Langmuir adsorption isotherm model. The results revealed that inhibition efficiency (IE%) depends on the concentration of the extracts. The peak IE% values were obtained with a hybrid ratio of 3:1 (PAPE: WMPE) for gravimetric technique. The Tafel polarization and gasometrical measurement technique is 96.7%, 98.5% and 83.1% respectively at the concentration of 1.0 g/L, which are above the peak IE% for PAPE (93.7%, 80.96% and 77.8%) and WMPE (92.7%, 80.5% and 75.6%).","PeriodicalId":22358,"journal":{"name":"The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83571562","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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