Manufacturing Technology最新文献_第3页

Possibilities of Restoring the Plasticity of Operationally Degraded Steel EN ISO 14MoV6-3 恢复操作退化钢塑性的可能性

Manufacturing Technology Pub Date : 2023-11-14 DOI: 10.21062/mft.2023.081

Petr Beneš, Tomáš Vrána, David Bricín, Antonín Kříž

{"title":"Possibilities of Restoring the Plasticity of Operationally Degraded Steel EN ISO 14MoV6-3","authors":"Petr Beneš, Tomáš Vrána, David Bricín, Antonín Kříž","doi":"10.21062/mft.2023.081","DOIUrl":"https://doi.org/10.21062/mft.2023.081","url":null,"abstract":"The article deals with the possibility of increasing mechanical and utility properties by means of regenerative heat treatment. Experimental program is focused on the heat treatment of low-alloy heat-resistant steelÂ EN ISO 14MoV6-3. This steel has been used since the 1970s for high-temperature exposed components in practically all coal-fired thermal power plants in the Czech Republic. Thus, steel EN ISO 14MoV6-3Â is currently the best studied refractory material whose data, collected from experimental creep behaviour tests, exceeds the computational service time 2.105 hours. In order to remain competitive in the new energy mix, conventional steam power plants are forced to adapt to the requirements of semi-scheduled power generation. However, these plants were not originally designed for such operation and therefore have to adapt to new demands on the timing of the power provided, including requirements to reduce overall plant emissions and to increase the efficiency of power generation. These components are now subjected to substantially increased cyclic stresses due to power changes during half-cap operation. These stresses have a major impact on the material lifetime and therefore on the overall performance and lifetime of the plant.","PeriodicalId":38629,"journal":{"name":"Manufacturing Technology","volume":"48 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134901204","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}

引用次数: 0

Kinematic Parameters of the Biplanetary Mechanism (Intermittent Mixing Machines) 双行星机构(间歇混合机)的运动参数

Manufacturing Technology Pub Date : 2023-09-26 DOI: 10.21062/mft.2023.073

Erkin Nematov, Amon Berdiev, Peng Wang

引用次数: 0

The Mechanical Analyses and Structural Optimization of CSMC Preload System under Multi-load Cases 多工况下CSMC预紧系统的力学分析及结构优化

Manufacturing Technology Pub Date : 2023-09-15 DOI: 10.21062/mft.2023.075

Xianewei Wang, Haikuo Zhao, Fei Xie, Chenyang Li, Xiulian Li

{"title":"The Mechanical Analyses and Structural Optimization of CSMC Preload System under Multi-load Cases","authors":"Xianewei Wang, Haikuo Zhao, Fei Xie, Chenyang Li, Xiulian Li","doi":"10.21062/mft.2023.075","DOIUrl":"https://doi.org/10.21062/mft.2023.075","url":null,"abstract":"In order to accumulate experience in the design and manufacturing of the toroidal field coils for the China Fusion Engineering Test Reactor, a model coil of mixed Nb3Sn-NbTi superconducting magnet with a maximum magnetic field variation rate of 1.5 T/s has been developed at the Institute of Plasma Physics, Chinese Academy of Sciences. The preload system, as one of the key components of the model coil, plays a crucial role in maintaining the overall integrity and stability of the model coil. First the mag\u0002netic field and electromagnetic forces of the model coil under extreme conditions are calculated based on Maxwell's equations. Then, the mechanical performance of the model coil at room and cryogenic temperatures is analyzed. To addressing the issue of excessive stress in the preload components of the model coil under preload, several optimization design schemes are proposed and iteratively analyzed. Finally, stress linearization is performed, and stress evaluation is conducted based on the analytical de\u0002sign. The assessment results indicate that certain optimization schemes enable the preload components to fully meet the operational requirements at both room and cryogenic temperatures. The outcomes pre\u0002sented in the paper will provide reference for the subsequent design and manufacturing of the central solenoid coil.","PeriodicalId":38629,"journal":{"name":"Manufacturing Technology","volume":"356 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135395154","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}

引用次数: 0

Optimizing Shock Absorber Operation for Improved Hot Forging Efficiency 优化减震器操作，提高热锻效率

Manufacturing Technology Pub Date : 2023-09-15 DOI: 10.21062/mft.2023.074

Artur Meller, Marcin Suszyński, Stanisław Legutko, Marek Trączyński, Adrian Mróz, Vit Cernohlavek

{"title":"Optimizing Shock Absorber Operation for Improved Hot Forging Efficiency","authors":"Artur Meller, Marcin Suszyński, Stanisław Legutko, Marek Trączyński, Adrian Mróz, Vit Cernohlavek","doi":"10.21062/mft.2023.074","DOIUrl":"https://doi.org/10.21062/mft.2023.074","url":null,"abstract":"Article presents a novel approach to addressing the challenge of forge-free filling of gas cylinder valve knobs in the context of the pneumatic shock absorber utilized within elevator systems. The shock absorber is a critical component responsible for ensuring accurate and efficient transportation of charge material to the electric inductor of automatic hot forging presses. Precise control of the shock absorber's operation is essential for maintaining proper system functionality and minimizing deficiencies. To investigate the system's response to changes in shock absorber operating parameters, the authors conducted a comprehensive simulation. The simulation results revealed that by identifying specific and optimal operational characteristics, the level of deficiencies can be significantly reduced. These findings offer valuable insights into system behavior, facilitating the optimization of shock absorber operation and overall improvement of the hot forging process. Implementation of the optimized shock absorber operation based on the simulation outcomes can enhance productivity, cost-efficiency, and quality in the hot forging industry.","PeriodicalId":38629,"journal":{"name":"Manufacturing Technology","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135395675","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}

引用次数: 0

Analysis of the Coating Delamination after Laser Beam Cutting 激光束切割后涂层分层分析

Manufacturing Technology Pub Date : 2023-09-15 DOI: 10.21062/mft.2023.070

Anna Mičietová, Miroslav Neslušan, Zuzana Florková, Mária Čilliková

引用次数: 0

Design of an Injection Mould Utilizing Experimental Measurements and Reverse Engineering 利用实验测量和逆向工程的注射模具设计

Manufacturing Technology Pub Date : 2023-09-15 DOI: 10.21062/mft.2023.072

Vladimír Bechný, Miroslav Matuš, Richard Joch, Mário Drbúl, Jozef Holubják, Andrej Czán, Michal Šajgalík, Jaromír Markovič

引用次数: 0

Characteristics of Coconut Fibre Combined with Vinyl Ester Composites Through Material Testing and Machining 通过材料试验和加工研究椰子纤维与乙烯基酯复合材料的特性

Manufacturing Technology Pub Date : 2023-09-15 DOI: 10.21062/mft.2023.071

Muhammad Wafiuddin Suhami, Norfariza Ab Wahab, H. Boejang, Khairum Hamzah, Hiroyuki Sasahara

{"title":"Characteristics of Coconut Fibre Combined with Vinyl Ester Composites Through Material Testing and Machining","authors":"Muhammad Wafiuddin Suhami, Norfariza Ab Wahab, H. Boejang, Khairum Hamzah, Hiroyuki Sasahara","doi":"10.21062/mft.2023.071","DOIUrl":"https://doi.org/10.21062/mft.2023.071","url":null,"abstract":"In today's manufacturing industry, composites are widely used. This is primarily due to the highly variable material properties that can be obtained by combining various materials as reinforcements and matrices. However, modern environmental concerns have pushed researchers and engineers to seek materials from organic and renewable sources. The study will look into composite surface roughness during the cutting process, which will involve milling with a CNC router machine. A portable surface roughness tester will be used to obtain a surface roughness average (Ra) reading, and microscopes will be used to examine the composite surface roughness behaviour under a microscope. Based on the results of the experiment, 82 wt.% vinyl ester resin on coconut fibre composite provides the best material properties. With a constant feed rate of 500 mm/min applied to spindle speeds of 5,000, 20,000, and 30,000 rpm, the 5,000 rpm showed the best surface roughness average performance compared to the other two. Further research focusing on feed rates may be required to better deduce the material machining data.","PeriodicalId":38629,"journal":{"name":"Manufacturing Technology","volume":"2012 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135395668","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}

引用次数: 0

The Influence of Accelerated Electron Irradiation on the Change of Tribological Behavior of Polymeric Materials PET, PTFE & PE2000C 加速电子辐照对高分子材料PET、PTFE和amp摩擦学行为变化的影响PE2000C

Manufacturing Technology Pub Date : 2023-09-15 DOI: 10.21062/mft.2023.068

Lenka Bartosova, Marcel Kohutiar, Michal Krbata, Jana Escherova, Maros Eckert, Milan Jus

{"title":"The Influence of Accelerated Electron Irradiation on the Change of Tribological Behavior of Polymeric Materials PET, PTFE & PE2000C","authors":"Lenka Bartosova, Marcel Kohutiar, Michal Krbata, Jana Escherova, Maros Eckert, Milan Jus","doi":"10.21062/mft.2023.068","DOIUrl":"https://doi.org/10.21062/mft.2023.068","url":null,"abstract":"The presented work deals with the study of the effect of increasing the doses of irradiation by accel-erated electrons on the sliding properties of polymer materials. Due to the influence of radiation, sur-face roughness changes occur on the surface of the experimental materials, which lead to changes in the properties of the coefficient of friction on the selected polymer materials. Three types of polymer materials PET, PTFE and PE2000C were used for the experimental research, which, due to their properties, are used for different types of sliding products. A steel ball of G40 material was used as a pressure material, which moved along a linear path on which the load was increased from 10 N to 100 N. Electron beam accelerators with the conversion of electrons to X-rays combine the advantages of a high ability to penetrate gamma photons sources and high performance of electron beam devices. The application possibilities of the device are wide due to the dual mode of operation (electron beam or X-ray beam) and a wide range of applicable doses and also dose rates.","PeriodicalId":38629,"journal":{"name":"Manufacturing Technology","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135395960","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}

引用次数: 0

The Influence of Industrial-Scale Pack-Boroding Process Time on Thickness and Phase Composition of Selected Cold-Work Tool Steels 工业规模包渗工艺时间对选定冷作工具钢厚度和相组成的影响

Manufacturing Technology Pub Date : 2023-09-15 DOI: 10.21062/mft.2023.069

Jakub Jopek, Marek Góral, Barbara Koscielniak, Kamil Ochal, Marcin Drajewicz, Magdalena Mokrzycka, Tadeusz Kubaszek, Kamil Dychton, Kamil Gancarczyk, Andrzej Gradzik, Pawel Kwasniewski, Wojciech Gluchowski

引用次数: 0

Structural and Fractographic Analysis of Aluminum Alloy before and After Fatigue Loading 铝合金疲劳加载前后的组织与断口分析

Manufacturing Technology Pub Date : 2023-09-14 DOI: 10.21062/mft.2023.067

Milan Uhríčik, Peter Palček, Mária Chalupová, Lenka Kuchariková, Lucia Pastierovičová, Denisa Medvecká, Lenka Markovičová, Róbert Balšianka, Alan Vaško

引用次数: 0