Academic literature on the topic 'Tightness of SLM parts'

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Journal articles on the topic "Tightness of SLM parts"

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Полупан, Антон Сергійович, та Валерій Терентійович Сікульський. "Теоретичне визначення режимів селективного лазерного плавлення для виготовлення деталей з мінімальним рівнем пористості". Aerospace technic and technology, № 2 (25 квітня 2022): 38–46. http://dx.doi.org/10.32620/aktt.2022.2.05.

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The subject of this article is the process of manufacturing parts of aerospace technology by selective laser melting (SLM) using metal powder of heat-resistant alloy Inconel 718. Objectives: to determine the reasonable size of the melt bath in relation to certain process parameters; to examine the level of porosity based on the obtained values of the melt bath; to determine the most acceptable mode of the SLM process. The methods used are mathematical models of optimization and methods for solving nonlinear problems. The simulation took into account such parameters as the power of the laser ra
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Yan, Xiaoling, Xiansheng Xu, and Qinxue Pan. "Study on the Measurement of Stress in the Surface of Selective Laser Melting Forming Parts Based on the Critical Refraction Longitudinal Wave." Coatings 10, no. 1 (2019): 5. http://dx.doi.org/10.3390/coatings10010005.

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Measurement and control of stress in the metal forming layer is the basic problem of selective laser melting (SLM) forming parts. The critical refraction longitudinal (LCR) wave method to test stress in metallic materials has been extensively studied. However, when testing of stress in selective laser melting (SLM) forming parts using this method, some deep-seated regularities of this technology are still not clear. In order to reveal the mechanism of the LCR wave method to measure stress in SLM forming parts, specimens made of 316 L stainless steel were manufactured using meander, stripe, and
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Liu, A., Chee Kai Chua, and Kah Fai Leong. "Properties of Test Coupons Fabricated by Selective Laser Melting." Key Engineering Materials 447-448 (September 2010): 780–84. http://dx.doi.org/10.4028/www.scientific.net/kem.447-448.780.

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Selective Laser Melting (SLM) is a popular and promising Additive Manufacturing (AM) technique as it can produce parts with complex internal features with part density close to 100%. However, unprocessed raw SLM fabricated parts have surface roughness issues and the mechanical properties of raw SLM parts without heat treatment are not ideal. The material used to address some of these issues in this research is an Aluminum alloy, AlSi10Mg – a strong and light weight metal. The SLM machine engaged for the test coupons fabrication is M2 Cusing from Concept Laser, Germany, which uses a diode pumpe
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Kiass, E. M., K. Zarbane, and Z. Beidouri. "Process parameters effect on porosity rate of AlSi10Mg parts additively manufactured by Selective Laser Melting: challenges and research opportunities." Archives of Materials Science and Engineering 122, no. 1 (2023): 22–33. http://dx.doi.org/10.5604/01.3001.0053.8844.

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The present study aims to conduct a literature review on the various methods explored to enhance the quality of AlSi10Mg parts manufactured via the Selective Laser Melting (SLM) process. Specifically, the research focuses on identifying strategies for reducing the porosity level in SLM-fabricated AlSi10Mg parts. Considering the highly competitive nature of the market in which SLM technology is employed, improving part quality is necessary to ensure business continuity and maintain a competitive edge.The present study offers a comprehensive examination of the SLM process, particularly emphasisi
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Liu, Jin Hui, Wen Juan Xie, Sheng Bing Xiao, Wei Ling Zhao, and Jia Zhang. "On Formation and Estimation of Pores during Selective Laser Melting of Single-Phase Metal Powders." Advanced Materials Research 338 (September 2011): 94–101. http://dx.doi.org/10.4028/www.scientific.net/amr.338.94.

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Porous metals are applied in many more fields than other porous materials. Pores in porous metal parts manufactured by selective laser melting (SLM) should not be regarded as defects but favorable characters because they are the main composition of porous metal parts. Therefore, fully densification is not the only target in forming metal parts via SLM. The formation mechanism of pores in SLM is studied mathematically in this article, and mathematical model is built to describe the formation mechanism. It is concluded that the shape of pores and the porosity of parts are the function of SLM pro
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Yan, Xiaoling, and Huiwen Fu. "Opportunities and Challenges for Predicting the Service Status of SLM Metal Parts Under Big Data and Artificial Intelligence." Materials 17, no. 22 (2024): 5648. http://dx.doi.org/10.3390/ma17225648.

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Selective laser melting (SLM) technology is a high-end dual-use technology that is implemented in aerospace and medical equipment, as well as the automotive industry and other military and civilian industries, and is urgently needed for major equipment manufacturing and national defense industries. This paper examines the challenges of uncontrollable service states and the inability to ensure service safety of SLM metal parts under nonlinear and complex operating conditions. An overview of the prediction of the service status of SLM metal parts was introduced, and an effective approach solving
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Qiao, Rui, and Xiaoling Yan. "The Characterization of Fatigue Damage of 316L Stainless Steel Parts Formed by Selective Laser Melting with Harmonic Generation Technique." Materials 15, no. 3 (2022): 718. http://dx.doi.org/10.3390/ma15030718.

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Fatigue damage is the main reason for the failure of parts formed by selective laser melting (SLM) technology. This paper presents a high-order, harmonic, and nonlinear ultrasonic testing system for monitoring the generation and evolution of fatigue damage in SLM 316L stainless steel parts. The results demonstrate that the normalized ultrasonic, nonlinear coefficients show a significant dependence on the degree of fatigue damage of the tested specimen and that the normalized, ultrasonic, and nonlinear coefficients are effective in characterizing the degree of fatigue damage in SLM 316L stainle
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Wang, Di, Yang Liu, Yongqiang Yang, and Dongming Xiao. "Theoretical and experimental study on surface roughness of 316L stainless steel metal parts obtained through selective laser melting." Rapid Prototyping Journal 22, no. 4 (2016): 706–16. http://dx.doi.org/10.1108/rpj-06-2015-0078.

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Purpose The purpose of this paper is to provide a theoretical foundation for improving the selective laser melting (SLM) surface roughness. To improve the part’s surface quality during SLM process, the upper surface roughness of SLM parts was theoretically studied and the influencing factors were analyzed through experiments. Design/methodology/approach The characteristics of single track were first investigated, and based on the analysis of single track, theoretical value of the upper surface roughness would be calculated. Two groups of cubic sample were fabricated to validate SLM parts’ surf
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Franz, Peter, Aamir Mukhtar, Warwick Downing, Graeme Smith, and Ben Jackson. "Mechanical Behaviour of Gas Nitrided Ti6Al4V Bars Produced by Selective Laser Melting." Key Engineering Materials 704 (August 2016): 225–34. http://dx.doi.org/10.4028/www.scientific.net/kem.704.225.

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Gas atomized Ti-6Al-4V (Ti64) alloy powder was used to prepare distinct designed geometries with different properties by selective laser melting (SLM). Several heat treatments were investigated to find suitable processing parameters to strengthen (specially to harden) these parts for different applications. The results showed significant differences between tabulated results for heat treated billet Ti64 and SLM produced Ti64 parts, while certain mechanical properties of SLM Ti64 parts could be improved by different heat treatments using different processing parameters. Most heat treatments per
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Giganto, S., S. Martínez, J. Barreiro, and E. Cuesta. "Evaluation of the influence of post-processing on the optical inspection accuracy of additively manufactured parts." IOP Conference Series: Materials Science and Engineering 1193, no. 1 (2021): 012062. http://dx.doi.org/10.1088/1757-899x/1193/1/012062.

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Abstract Optical measurement systems are important techniques for rapid inspecting additively manufactured parts by techniques such as selective laser melting (SLM). Depending on their application, SLM parts require post-processes such as sandblasting or heat treatment, commonly applied in order to improve their surface finish or mechanical properties, respectively. These post-processes modify the parts surface characteristics, and therefore the suitability for optical inspection. This work evaluates the influence of these SLM post-processes on optical inspection. For this, a test part, manufa
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Dissertations / Theses on the topic "Tightness of SLM parts"

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Kafka, Richard. "Vývoj SLM procesních parametrů pro tenkostěnné díly z niklové superslitiny." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443180.

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The diploma thesis deals with the development of process parameters of SLM technology for the material IN718. The main goal is an experimental development of a set of parameters for the production of thin-walled parts with regard to material density, surface roughness and tightness. The essence of the development of parameters is an experimental explanation of the influence of laser power and scanning speed on the morphology of single tracks, which are used for the production of a thin wall. Together with walls of larger widths and volume samples, it is possible to create an intersection of pa
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Barinka, Michal. "Modifikace povrchu materiálu vytvořeného technikou SLM." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-449795.

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This diploma thesis deals with the surface modification of 3D printed metallic materials. The research part presents the most used methods of additive manufacturing and their process parameters influencing the quality of printed components. Defects arising during these processes and the techniques used to eliminate them are also described. In the experimental part of the work, the optimization of electrochemical polishing parameters was performed. The aim was to modify the rough surface of the components and thus prevent the formation of defects on the surface. The mechanical properties were i
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Clark, Jared A. "The Effects of Build Orientation on Residual Stresses in AlSi10Mg Laser Powder Bed Fusion Parts." Youngstown State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1578819644598848.

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Oliveira, Abel Loureiro de. "Effect of heat treatment on SLM maraging C-300 steel parts." Master's thesis, 2019. https://hdl.handle.net/10216/122700.

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Oliveira, Abel Loureiro de. "Effect of heat treatment on SLM maraging C-300 steel parts." Dissertação, 2019. https://hdl.handle.net/10216/122700.

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Lourenco, Vera Lúcia Lopes. "Modelo de custos para processos de produção rápida." Master's thesis, 2014. http://hdl.handle.net/10316/38818.

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Dissertação de Mestrado em Engenharia e Gestão Industrial apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra.<br>A produção rápida é um processo relativamente novo derivado de tecnologias desenvolvidas para a prototipagem rápida para a obtenção de protótipos. As tecnologias de produção rápida têm como objetivo a produção de peças finais, através do princípio de adição de camadas e com o mínimo desperdício de material, a partir de um modelo tridimensional em CAD. Para justificar o potencial destas técnicas, este trabalho inclui informação sobre os benefícios da produçã
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Book chapters on the topic "Tightness of SLM parts"

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Tawfik, Ahmed, Radu Racasan, Desi Bacheva, Liam Blunt, André Beerlink, and Paul Bills. "Challenges in Inspecting Internal Features for SLM Additive Manufactured Build Artifacts." In Structural Integrity of Additive Manufactured Materials & Parts. ASTM International, 2020. http://dx.doi.org/10.1520/stp163120200003.

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Bouguerra, Oussema, Salma Slama, Asma Belhadj, and Noureddine Barka. "Experimental Investigation of SLM Parameters Effects on Roughness of 316L Parts." In Lecture Notes in Mechanical Engineering. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-47784-3_27.

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Ramos-Grez, Jorge Andrés, Maximiliano López Norambuena, Ignacio Jeria Pérez, Domingo Gallardo Saavedra, and Matías González Aguilera. "Development of Powder Bed Laser 3D Printing in Polar Coordinates and Its Comparison with Conventional Cartesian Laser 3D Printing." In Proceedings of the XV Ibero-American Congress of Mechanical Engineering. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-38563-6_53.

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AbstractPowder bed laser 3D printing performed using polar coordinates, called Spiral Growth Manufacturing (SGM), allows manufacturing axisymmetric revolution parts in less time compared to conventional cartesian laser printing or Selective Laser Melting (SLM). In this work, a device to perform SGM operating under polar coordinates is presented. The study considered the manufacture of rings by 3D laser printing, both polar (SGM) and cartesian (SLM), from AISI 316L steel powder. These were compared dimensionally and with regards to density and build rate efficiency of the process. The rings hav
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Bilgin, Guney Mert, Cansinem Tuzemen, Cemre Tigli, and Yesim Nur Gulcan. "Investigation of Microstructure and Mechanical Properties of SLM-Produced Inconel 718 and Hastelloy-X Alloys." In Structural Integrity of Additive Manufactured Materials & Parts. ASTM International, 2020. http://dx.doi.org/10.1520/stp163120190133.

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Herbin, Pawel, Dariusz Grzesiak, and Marcin A. Krolikowski. "Topology Optimisation Aimed at Additive—SLM Manufacturing of Metal Parts of ExoArm 7-DOF." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-68619-6_51.

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Lippert, Rene Bastian, and Roland Lachmayer. "A Design Method for SLM-Parts Using Internal Structures in an Extended Design Space." In Industrializing Additive Manufacturing - Proceedings of Additive Manufacturing in Products and Applications - AMPA2017. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-66866-6_2.

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Matuš, Miroslav, Vladimír Bechný, Michal Šajgalík, et al. "Implementation of Advanced Techniques for Quality Assessment of Metal Parts Produced by SLM Technology." In Lecture Notes in Networks and Systems. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-65656-9_8.

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Kaushik, Brahmansh, S. Anand Kumar, and V. Rajkumar. "Geometrical Form Deviation and Defect Analysis of SLM Processed Slender Parts Using Computer Vision Methodology." In Lecture Notes in Mechanical Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-7612-4_13.

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Lesyk, Dmytro, Silvia Martinez, Oleksii Pedash, Vitaliy Dzhemelinskyi, and Bohdan Mordyuk. "Combined Thermo-Mechanical Techniques for Post-processing of the SLM-Printed Ni-Cr-Fe Alloy Parts." In Advances in Design, Simulation and Manufacturing III. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-50794-7_29.

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Lychev, Sergei A., and Montaser Fekry. "Reducing of Residual Stresses in Metal Parts Produced By SLM Additive Technology with Selective Induction Heating." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-92144-6_14.

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Conference papers on the topic "Tightness of SLM parts"

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Guo, Song, and Huiquan Na. "Defect Detection of SLM Parts Based on Adaptive Threshold Segmentation Method." In 2025 8th International Conference on Advanced Electronic Materials, Computers and Software Engineering (AEMCSE). IEEE, 2025. https://doi.org/10.1109/aemcse65292.2025.11042661.

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Botinha, Julia, Christina Schmidt, Bodo Gehrmann, and Helena Alves. "Characterization of Additively Manufactured Parts of Alloy UNS N07718 in the API 6ACRA Chemical Composition." In CORROSION 2021. AMPP, 2021. https://doi.org/10.5006/c2021-16403.

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Abstract After an era of prototyping, the additive manufacturing (AM) processes are currently passing through an industrialization period, when the production of real parts and complex field-applicable components is beginning to take part in the industry. Together with this fast development, the need to compare and evaluate the properties of additive manufactured products arises. Among the most used wrought and additively manufactured nickel alloys in the oil &amp; gas industry is the Alloy UNS(1) N07718, a precipitation hardening nickel-chromium-iron alloy enriched with niobium, molybdenum, t
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Alabdulgader, Omar S. "Corrosion Resistance Study of Additively Manufactured Stainless Steel in Physiological Solution." In CONFERENCE 2024. AMPP, 2024. https://doi.org/10.5006/c2024-20771.

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Abstract The purpose of this paper is to study the corrosion resistance performance and requirements of AM biomedical implants as well as to characterize the corrosion behavior of Additive Manufactured 316L stainless steel in simulated physiological environment. The corrosion performance and mechanical properties of additively manufactured 316L stainless steel material in simulated physiological environment was studied. In the efforts of improving the reliability of Additive Manufactured biomedical devices, this research focuses on studying the corrosion, microstructural and mechanical propert
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Mitchell, W. A., G. A. Small, M. A. Reinsalu, Grace Dearborn, and D. O. Veil. "The Use of Novel Monitoring and Control Technology in Cooling Water Systems to Lower Operating Costs." In CORROSION 1995. NACE International, 1995. https://doi.org/10.5006/c1995-95263.

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Abstract Cooling water treatment control is accomplished by a number of methods, including mass balance, timer control and control by measurement of an inert component of the cooling water product. A new on-line analyzer achieves product control by measurement of active treatment chemistry. The new analyzer utilizes an on-line ultraviolet-visible spectrophotometer containing no moving parts. Coupled with a chemometrics software package, the instrumentation accurately predicts active product chemistry. Data from frequent determinations of active product level is processed to control product che
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Park, Hong-Seok, Ngoc-Hien Tran, and Ansari Md Jonaet. "Prediction of Temperature Distribution and Residual Stress in SLM Printed Parts." In ASME 2018 13th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/msec2018-6440.

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Selective laser melting (SLM) is a powder bed based additive manufacturing (AM) process to manufacture metallic parts. SLM is the complex thermal-physical-chemical process of the interaction between a laser source and metallic powders. The SLM printing method has been applied widely for fabricating the metallic parts. However, the high temperature in heating and fast cooling during SLM process result in the large residual stress which affects to the quality of the SLM printed parts such as distortion and cracks. This research proposes to develop a system for predicting the quality of the part
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Wang, Xiaoqing, Xibing Gong, and Kevin Chou. "Review on Powder-Bed Laser Additive Manufacturing of Inconel 718 Parts." In ASME 2015 International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/msec2015-9322.

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This study presents a thorough literature review on the powder-bed laser additive manufacturing processes such as selective laser melting (SLM) of Inconel 718 parts. The paper first introduces the general aspects of powder-bed laser additive manufacturing and then discusses the unique characteristics and advantages of SLM. Moreover, the bulk of this study includes extensive discussions of microstructures and mechanical properties, together with the application ranges, of Inconel 718 parts fabricated by SLM.
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Yang, Mei, Yishu Zhang, Haoxing You, Richard Smith, and Richard D. Sisson. "Hardening of Selective Laser Melted M2 Steel." In HT2021. ASM International, 2021. http://dx.doi.org/10.31399/asm.cp.ht2021p0007.

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Abstract Selective laser melting (SLM) is an additive manufacturing technique that can be used to make the near-net-shape metal parts. M2 is a high-speed steel widely used in cutting tools, which is due to its high hardness of this steel. Conventionally, the hardening heat treatment process, including quenching and tempering, is conducted to achieve the high hardness for M2 wrought parts. It was debated if the hardening is needed for additively manufactured M2 parts. In the present work, the M2 steel part is fabricated by SLM. It is found that the hardness of as-fabricated M2 SLM parts is much
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Schurb, Julius, Matthias Hoebel, Hartmut Haehnle, Harald Kissel, Laura Bogdanic, and Thomas Etter. "Additive Manufacturing of Hot Gas Path Parts and Engine Validation in a Heavy Duty GT." In ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/gt2016-57262.

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Additive manufacturing and in particular Selective Laser Melting (SLM) are manufacturing technologies that can become a game changer for the production of future high performance hot gas path parts. SLM radically changes the design process giving unprecedented freedom of design and enabling a step change in part performance. Benefits are manifold, such as reduced cooling air consumption through more efficient cooling schemes, reduced emissions through better mixing in the combustion process and reduced cost through integrated part design. GE is already making use of SLM for its gas turbine com
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Yang, Mei, Yangyang Fan, and Richard D. Sisson. "Carburization Heat Treatment of Selective Laser Melted 20MnCr5 Steel." In HT2019. ASM International, 2019. http://dx.doi.org/10.31399/asm.cp.ht2019p0001.

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Abstract As a novel manufacturing technology additive manufacturing (AM) has advantages such as energy saving, reduced material waste, faster design-to-build time, design optimization, reduction in manufacturing steps, and product customization compared to conventional manufacturing processes. Heat treatment is widely used to improve the properties of conventional manufactured steel parts. The response of additively manufactured steel parts to heat treatment may be different from conventionally manufactured steel parts due to variations in microstructure. An understanding of heat treatment pro
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Glukhov, V. I., V. V. Shalay, V. A. Grinevich, and Yu N. Panin. "Geometric modeling of wedge gate parts for ensuring the valves tightness." In OIL AND GAS ENGINEERING (OGE-2018). Author(s), 2018. http://dx.doi.org/10.1063/1.5051949.

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