The Experts below are selected from a list of 12 Experts worldwide ranked by ideXlab platform
Zhengyang Xu - One of the best experts on this subject based on the ideXlab platform.
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improving machining accuracy of electrochemical machining blade by optimization of cathode feeding directions
The International Journal of Advanced Manufacturing Technology, 2013Co-Authors: N S Qu, Zhengyang XuAbstract:Electrochemical machining (ECM) is well-established in certain areas, such as the aerospace, defence, and medical industries for machining complex parts. ECM is an effective way to produce compression blades. However, with advances in the development of aero engines, the accuracy of blades becomes higher and their shapes have also become more complex. Thus, considerable attention has been devoted to improving the machining accuracy of blades by ECM. In blades machined by ECM, the angle between the cathode feeding directions and the normal of the Anode profile greatly affects the accuracy of the ECM process, and it is determined by the angle combination of the Anode Installation and the cathodes feeding direction. It is very important to determine the best angle combinations that could minimise the angle between the cathode feeding directions and the normal of the Anode profile. The present paper focuses on the optimization method of the angle combinations of the cathode feeding directions and Anode Installation. A theoretical model describing the optimization method of the cathode feeding directions and position of the Anode was developed, and the experimental investigations were conducted in order to evaluate the rationality of the optimization method. The results show that with the optimized combination of the cathode feeding directions and position of the Anode, the maximum angle between the cathodes feeding directions and the normal of the Anode profile is minimised and the inter-electrode gap between the cathode and Anode is more uniform. Thus, the machining accuracy could be clearly improved and the maximum errors of the convex part and concave part were only 0.054 and 0.047 mm, respectively.
N S Qu - One of the best experts on this subject based on the ideXlab platform.
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improving machining accuracy of electrochemical machining blade by optimization of cathode feeding directions
The International Journal of Advanced Manufacturing Technology, 2013Co-Authors: N S Qu, Zhengyang XuAbstract:Electrochemical machining (ECM) is well-established in certain areas, such as the aerospace, defence, and medical industries for machining complex parts. ECM is an effective way to produce compression blades. However, with advances in the development of aero engines, the accuracy of blades becomes higher and their shapes have also become more complex. Thus, considerable attention has been devoted to improving the machining accuracy of blades by ECM. In blades machined by ECM, the angle between the cathode feeding directions and the normal of the Anode profile greatly affects the accuracy of the ECM process, and it is determined by the angle combination of the Anode Installation and the cathodes feeding direction. It is very important to determine the best angle combinations that could minimise the angle between the cathode feeding directions and the normal of the Anode profile. The present paper focuses on the optimization method of the angle combinations of the cathode feeding directions and Anode Installation. A theoretical model describing the optimization method of the cathode feeding directions and position of the Anode was developed, and the experimental investigations were conducted in order to evaluate the rationality of the optimization method. The results show that with the optimized combination of the cathode feeding directions and position of the Anode, the maximum angle between the cathodes feeding directions and the normal of the Anode profile is minimised and the inter-electrode gap between the cathode and Anode is more uniform. Thus, the machining accuracy could be clearly improved and the maximum errors of the convex part and concave part were only 0.054 and 0.047 mm, respectively.
Kyeongwan Park - One of the best experts on this subject based on the ideXlab platform.
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numerical analysis results of the cathodic protection for the underground steel pipe by Anode Installation method
Journal of the Korean Society of Marine Engineering, 2014Co-Authors: Jina Jeong, Yeongil Choo, Chungkuk Jin, Kyeongwan ParkAbstract:This study aims to find out the best Anode location for buried pipelines. Numerical simulation program known as CATPRO(Elsyca, Belgium) were used for confirming the best location of Anodes and the effects of impressed current cathodic protection system. Applied conditions for numerical simulation were similar to on-site environmental conditions for optimal application of cathodic protection system. Used criterion of cathodic protection was NACE SP 0169, which describes that minimum requirement for cathodic protection is -850mV vs. CSE. Various layouts for Anodes’ Installation were applied, which were distance between Anodes, Anode Installation location, and applied current. The areas where cathodic protection potential was lower than -850mV vs. CSE was limited up to 50m from Anode Installation locations. It was founded numerical analysis obtain cost-effective and efficient cathodic protection methods before design and application the impressed cathodic protection system to on-site environment.
Yang Wanguo - One of the best experts on this subject based on the ideXlab platform.
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matters needing attention in deep well Anode Installation
Petroleum Engineering Construction, 2009Co-Authors: Yang WanguoAbstract:Deep well Anode bed is used in many steel pipeline cathodic protection projects in complex circumstances owing to its advantages such as less occupied area, uniform protection potential and relative small grounding resistance. On the other hand, deep well Anode has the disadvantages such as higher one-time investment, complicated Installation work and needing successful Installation in one time, which bring forward higher requirements for Installation and construction. The matters needing attention in deep well Anode instal-lation are described with respects to Anode well locating, well digging method selection, putting Anode into well, backfill and grounding resistance measuring.
Jina Jeong - One of the best experts on this subject based on the ideXlab platform.
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numerical analysis results of the cathodic protection for the underground steel pipe by Anode Installation method
Journal of the Korean Society of Marine Engineering, 2014Co-Authors: Jina Jeong, Yeongil Choo, Chungkuk Jin, Kyeongwan ParkAbstract:This study aims to find out the best Anode location for buried pipelines. Numerical simulation program known as CATPRO(Elsyca, Belgium) were used for confirming the best location of Anodes and the effects of impressed current cathodic protection system. Applied conditions for numerical simulation were similar to on-site environmental conditions for optimal application of cathodic protection system. Used criterion of cathodic protection was NACE SP 0169, which describes that minimum requirement for cathodic protection is -850mV vs. CSE. Various layouts for Anodes’ Installation were applied, which were distance between Anodes, Anode Installation location, and applied current. The areas where cathodic protection potential was lower than -850mV vs. CSE was limited up to 50m from Anode Installation locations. It was founded numerical analysis obtain cost-effective and efficient cathodic protection methods before design and application the impressed cathodic protection system to on-site environment.