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International Journal of Electrical Machining最新文献

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Study on Metal Film Formation by Large-area Electron Beam Irradiation 大面积电子束辐照形成金属薄膜的研究
International Journal of Electrical Machining Pub Date : 2016-03-20 DOI: 10.2526/IJEM.21.7
T. Shinonaga, M. Takata, A. Okada, S. Sano
{"title":"Study on Metal Film Formation by Large-area Electron Beam Irradiation","authors":"T. Shinonaga, M. Takata, A. Okada, S. Sano","doi":"10.2526/IJEM.21.7","DOIUrl":"https://doi.org/10.2526/IJEM.21.7","url":null,"abstract":"Recently, many surfacing processes, such as coating have been widely applied to the industrial products in order to improve the surface functions. One of the practical surfacing processes is a sputter deposition, in which the sputtered target material is deposited on the substrate surface. This method can be used not only for metals but also for insulators and plastics materials as substrate surface. In this study, the possibility of sputter deposition by using a large-area electron beam was discussed. If the target material deposits on the substrate surface simultaneously with the surface melting and resolidification of substrate material by large-area EB, the adhesion between the deposited film and the substrate surface would be strong. Alloy tool steel SKD11 was used as a substrate material, and pure metal tube made of nickel or titanium were used as a target material. Then, the substrate surface after EB irradiation was analyzed and the surface characteristics were investigated.","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122191948","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
Investigation on Visibility of Drilled Hole in Laser Micro-drilling of Multi-layered Artificial Skin 激光微钻多层人造皮肤钻孔可见性的研究
International Journal of Electrical Machining Pub Date : 2016-03-20 DOI: 10.2526/IJEM.21.13
Y. Okamoto, Kiichi Asako, N. Maeda, A. Okada, S. Minagi, Qiuyue Pan, Keiji Jin, G. Nishigawa
{"title":"Investigation on Visibility of Drilled Hole in Laser Micro-drilling of Multi-layered Artificial Skin","authors":"Y. Okamoto, Kiichi Asako, N. Maeda, A. Okada, S. Minagi, Qiuyue Pan, Keiji Jin, G. Nishigawa","doi":"10.2526/IJEM.21.13","DOIUrl":"https://doi.org/10.2526/IJEM.21.13","url":null,"abstract":"A multi-layered artificial skin is mainly consisted of three layers of silicone elastomer, print paper, and resin plate. Sealing of facial defects with the multi-layered artificial skin causes perspired water from the surface of missing parts, which results in insanitary conditions to the skin surface. Therefore, the laser micro-drilling using nanosecond and picosecond pulsed laser was investigated to provide the breathability for multi-layered artificial skin without human eye’s recognition of drilled holes, which can satisfy both the breathability and aesthetic problems. The visibility of drilled hole was affected by the pitch distance of drilled holes, and its visibility decreased with increasing the pitch distance. A small color difference measured using a colorimeter led to the low visibility, and laser micro-drilling with small color difference is effective to obtain the breathable multi-layered artificial skin with low visibility of drilled holes, which can improve the breathability for the multi-layered artificial skin.","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126682386","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: 2
Surface finishing achieved by ECM with a moving wire electrode ECM用移动的丝电极完成表面精加工
International Journal of Electrical Machining Pub Date : 2016-03-20 DOI: 10.2526/IJEM.21.18
K. Furuyama, M. Kunieda, T. Hashimoto, T. Yuzawa
{"title":"Surface finishing achieved by ECM with a moving wire electrode","authors":"K. Furuyama, M. Kunieda, T. Hashimoto, T. Yuzawa","doi":"10.2526/IJEM.21.18","DOIUrl":"https://doi.org/10.2526/IJEM.21.18","url":null,"abstract":"It is known that good surface roughness can be achieved by ECM with a high current density. However, when the tool electrode moves across the surface of the workpiece the low current density area which follows the high current density area roughens the surface. Attempts to suppress the effect of the low current density area by utilizing pulse currents to obtain a glossy surface were made. This paper reports the experimental results of ECM with a moving wire electrode on an EDMed surface to investigate the effect of various conditions on the machined surface.","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122966800","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: 8
Development of internal stress measurement technique for Ni electroforming using Shack.Hartmann sensor 基于Shack的镍电铸内应力测量技术的发展。哈特曼传感器
International Journal of Electrical Machining Pub Date : 2016-03-20 DOI: 10.2526/IJEM.21.25
T. Kume, S. Egawa, H. Mimura
{"title":"Development of internal stress measurement technique for Ni electroforming using Shack.Hartmann sensor","authors":"T. Kume, S. Egawa, H. Mimura","doi":"10.2526/IJEM.21.25","DOIUrl":"https://doi.org/10.2526/IJEM.21.25","url":null,"abstract":"The performance of an in situ internal stress measurement technique using a Shack–Hartmann sensor (SHS) is examined during nickel electrodeposition in concentrated nickel sulfamate solution. The stress is calculated from the change in the curvature of a test plate bent by stress. The curvature is measured by monitoring the wavefront of an expanded laser beam reflected at the substrate using an SHS. Applying the proposed method, curvature measurements were conducted and the repeatability and accuracy were estimated. In situ stress measurement with a current density of 2.1 mA/cm revealed a repeatability of approximately 1 MPa when the thickness of the nickel layer was","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130502097","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: 2
Study of Deposition Machining Using Electrical Discharge with Reciprocating Rotation in Air Gap 气隙往复旋转放电沉积加工研究
International Journal of Electrical Machining Pub Date : 2016-03-20 DOI: 10.2526/IJEM.21.1
Atsutoshi Hirao, T. Tani, Hiromitsu Gotoh, Shoju Aoshima, N. Mohri
{"title":"Study of Deposition Machining Using Electrical Discharge with Reciprocating Rotation in Air Gap","authors":"Atsutoshi Hirao, T. Tani, Hiromitsu Gotoh, Shoju Aoshima, N. Mohri","doi":"10.2526/IJEM.21.1","DOIUrl":"https://doi.org/10.2526/IJEM.21.1","url":null,"abstract":"This paper describes surface modification and surface deposition using a high-peak current discharge in an air gap and describes the relation between capacitance, which determines the peak current, and the deposition rate. The process is controlled manually using a rotating tool. The discharge circuit is a resistor-capacitor (RC) circuit, and switching is executed by means of a thyristor. The deposition of nickel onto a steel surface was performed using a nickel-based alloy for the electrode. The electrode was controlled with reciprocating rotation. The influence of the capacitance of the capacitor and the diameter of the electrode on the deposition rate was investigated. Using the proposed method, excellent surface deposition was achieved.","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116392636","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: 1
Discharge Machining of Insulating Si3N4 Ceramics with added Al2O3 添加Al2O3的绝缘Si3N4陶瓷放电加工
International Journal of Electrical Machining Pub Date : 2014-03-31 DOI: 10.2526/IJEM.19.45
D. Hanaoka, Y. Fukuzawa, Y. Kaneko, T. Harada
{"title":"Discharge Machining of Insulating Si3N4 Ceramics with added Al2O3","authors":"D. Hanaoka, Y. Fukuzawa, Y. Kaneko, T. Harada","doi":"10.2526/IJEM.19.45","DOIUrl":"https://doi.org/10.2526/IJEM.19.45","url":null,"abstract":"Insulating ceramic materials can be machined by electrical discharge machining (EDM) using the assisting electrode method with a sinking or wire EDM machine and electrically conductive material. In this machining process, electrically conductive carbon and carbide products adhere to the surface of the workpiece during discharge. The characteristics of the layer are affected by the electrical machining conditions and the physical characteristics of the workpiece. Typically, the machining conditions for SEDM and WEDM are very different. In this paper, to investigate the difference in the machining properties of SEDM and WEM, several experiments were carried out by varying the amount of Al2O3 added to the Si3N4 ceramics, and the size of the tool electrode. The material removal rate and the surface roughness were estimated for workpieces following EDM. Discharge waveforms were observed with a digital oscilloscope and analyzed by using the designed program. Machining properties were analyzed by considering the structure of the workpiece and the electrode diameter.","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130390640","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: 1
Singulation Characteristics of Semiconductor Package Using Pulsed Fiber Laser and SHG:YAG Laser 脉冲光纤激光器和SHG:YAG激光器半导体封装的仿真特性
International Journal of Electrical Machining Pub Date : 2014-03-31 DOI: 10.2526/IJEM.19.28
Y. Okamoto, R. Kitada, A. Okada, Y. Uno
{"title":"Singulation Characteristics of Semiconductor Package Using Pulsed Fiber Laser and SHG:YAG Laser","authors":"Y. Okamoto, R. Kitada, A. Okada, Y. Uno","doi":"10.2526/IJEM.19.28","DOIUrl":"https://doi.org/10.2526/IJEM.19.28","url":null,"abstract":"A laser singulation method by the superposition of a pulsed fiber laser and an SHG:YAG laser (SHG: Second Harmonic Generation) was proposed to perform the high-quality processing of semiconductor packages, which are consisted of thermosetting epoxy-resin with silica as the molding compounds and a glass epoxy board with insulator coatings for the semiconductor package. The superposition of the pulsed fiber laser and SHG:YAG laser with a high pulse repetition rate led to a straighter kerf shape with a smaller kerf width under the same pulse energy condition. A smaller kerf width was achieved by controlling the time-delay between the laser pulses compared with synchronized laser pulses. The heat affected zone from the cut surface was reduced by the superposition of the pulsed fiber laser and SHG:YAG laser. Moreover, synchronized laser pulses led to a smaller heat affected zone compared with unsynchronized pulses.","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134042152","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
Relation between Bubble Behavior and Removal Volume during Single Discharge with a Thin Electrode and a Flat-Plate Workpiece 薄电极与平板工件单次放电时气泡行为与去除量的关系
International Journal of Electrical Machining Pub Date : 2014-03-31 DOI: 10.2526/IJEM.19.16
H. Takezawa, D. Yanagida, N. Mohri
{"title":"Relation between Bubble Behavior and Removal Volume during Single Discharge with a Thin Electrode and a Flat-Plate Workpiece","authors":"H. Takezawa, D. Yanagida, N. Mohri","doi":"10.2526/IJEM.19.16","DOIUrl":"https://doi.org/10.2526/IJEM.19.16","url":null,"abstract":"","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129469409","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
Study on Possibility of Micro-deburring by Large-area Electron Beam Irradiation 大面积电子束辐照微去毛刺的可能性研究
International Journal of Electrical Machining Pub Date : 2014-03-31 DOI: 10.2526/IJEM.19.22
H. Yonehara, A. Okada, Y. Okamoto
{"title":"Study on Possibility of Micro-deburring by Large-area Electron Beam Irradiation","authors":"H. Yonehara, A. Okada, Y. Okamoto","doi":"10.2526/IJEM.19.22","DOIUrl":"https://doi.org/10.2526/IJEM.19.22","url":null,"abstract":"In a large-area electron beam (EB) irradiation method developed recently, high energy EB can be obtained without focusing the beam. Therefore, the large-area EB of 60mm in diameter with almost uniform energy distribution can be used for instant melting and evaporating of metal surface. The previous studies clarified that the surface smoothing of metal mold made of steel, cemented carbide and ceramics could be performed efficiently. Also this method can be applied to the surface finishing of biomaterials, such as stainless steel and titanium alloy. In this method, the sharp edge is possibly rounded to about half hundred microns in radius under relatively high energy density conditions, since the material removal remarkably progresses there due to the electron concentration and heat accumulation at the edge. In this study, the possibility of micro-deburring was investigated by using the preferential edge removal effect in the large-area EB irradiation. Experimental results showed that the micro-deburring was possible by large-area EB irradiation, and the burr height decreased with increasing energy density of EB and number of irradiation. The burr of about 50μm in height generated in EDM process could be removed completely. Furthermore, micro-burrs at the edge of several small holes within the wide area of 60mm in diameter could be removed simultaneously.","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128966530","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
Proposal and Verification of Electrolyte Suction Tool with Function of Gap-width Detection 具有间隙宽度检测功能的电解液吸液工具的设计与验证
International Journal of Electrical Machining Pub Date : 2014-03-31 DOI: 10.2526/IJEM.19.34
Katsuaki Endo, W. Natsu
{"title":"Proposal and Verification of Electrolyte Suction Tool with Function of Gap-width Detection","authors":"Katsuaki Endo, W. Natsu","doi":"10.2526/IJEM.19.34","DOIUrl":"https://doi.org/10.2526/IJEM.19.34","url":null,"abstract":"Since electro-chemical machining (ECM) is a non-contact machining method, it is necessary to detect and control the gap-width in order to estimate the machining amount and improve the machining speed and accuracy. In this research, a tool electrode which is capable of detecting the gap-width by the suction pressure was proposed. With this method, the electrolyte is confined and circulated beneath the tool electrode by a single suction pump. It was found the electrolyte is successfully circulated by the suction pump. In addition, experimental results showed that the suction pressure indicates the gap-width and the pressure signal can be successfully used to control the tool electrode feed.","PeriodicalId":407646,"journal":{"name":"International Journal of Electrical Machining","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126486336","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: 17
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