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Elliptical lobe shape gerotor pump design to minimize wear
Mohammad Reza KARAMOOZ RAVARI
《机械工程前沿(英文)》 2011年 第6卷 第4期 页码 429-434 doi: 10.1007/s11465-011-0247-6
The gerotor pumps are the most important parts of mechanical equipment that have a vast number of applications in industries and automobiles. Because the gerotor pumps cannot be adjusted for wear so it is important to reduce the wear as much as possible. In this paper first mathematical equations for elliptical lobe shape rotors profile and curvature of them have been derived and then Specific flow and wear rate proportional factor (WRPF) have been formulated. To reach the minimum wear in rotors teeth, the ellipse shape factor is changed for each value of number of outer rotor teeth in a feasible range and wear rate proportional factor has been resulted. Also in order to have better comparison specific flow has been presented. The obtained results have been compared with circular pumps with similar geometrical parameters and show the significant improvement in wear of the rotors with negligible changes in the specific flow.
关键词: gerotor pump elliptical lobe shape pump wear rate proportional factor (WRPF) specific flow
Tool wear mechanisms in the machining of Nickel based super-alloys: A review
Waseem AKHTAR,Jianfei SUN,Pengfei SUN,Wuyi CHEN,Zawar SALEEM
《机械工程前沿(英文)》 2014年 第9卷 第2期 页码 106-119 doi: 10.1007/s11465-014-0301-2
Nickel based super-alloys are widely employed in aircraft engines and gas turbines due to their high temperature strength, corrosion resistance and, excellent thermal fatigue properties. Conversely, these alloys are very difficult to machine and cause rapid wear of the cutting tool, frequent tool changes are thus required resulting in low economy of the machining process. This study provides a detailed review of the tool wear mechanism in the machining of nickel based super-alloys. Typical tool wear mechanisms found by different researchers are analyzed in order to find out the most prevalent wear mechanism affecting the tool life. The review of existing works has revealed interesting findings about the tool wear mechanisms in the machining of these alloys. Adhesion wear is found to be the main phenomenon leading to the cutting tool wear in this study.
《化学科学与工程前沿(英文)》 2023年 第17卷 第9期 页码 1254-1266 doi: 10.1007/s11705-023-2297-3
关键词: epoxy resin polyaniline nanorods mechanical property tribological performance wear mechanism
Mohammadreza SHABGARD, Hamed KAKOLVAND, Mirsadegh SEYEDZAVVAR, Ramin Mohammadpour SHOTORBANI
《机械工程前沿(英文)》 2011年 第6卷 第4期 页码 419-428 doi: 10.1007/s11465-011-0246-7
This paper presents the results of experimental studies carried out to conduct a comprehensive investigation on the influence of ultrasonic vibration of workpiece on the characteristics of Electrical Discharge Machining (EDM) process of FW4 Welding Metal in comparison with the conventional EDM process. The studied process characteristics included the material removal rate (MRR), tool wear ratio (TWR), and surface roughness (Ra and Rmax) of the workpiece after the EDM and ultrasonic assisted EDM (US-EDM) processes. The experiments performed under the designed full factorial procedure and the considered EDM input parameters included pulse on-time and pulse current. The experimental results show that in short pulse on-times, material removal rate in the US-EDM process is approximately quadruple than that of the EDM process. On the contrary, in the long pulse on-times, ultrasonic vibration of work??piece leads to the reduction in the MRR. On the other hand, in short pulse on-times, the TWR in the US-EDM process is lower than that of in the EDM process, and this condition reverses with increase in the pulse on-time. Furthermore, the surface roughness of the workpiece machined by EDM process is slightly lower than that of applied to the US-EDM process.
关键词: electrical discharge machining (EDM) material removal rate (MRR) tool wear ratio (TWR) surface roughness
Integrated slipper retainer mechanism to eliminate slipper wear in high-speed axial piston pumps
《机械工程前沿(英文)》 doi: 10.1007/s11465-021-0657-z
关键词: axial piston pump high speed slipper wear slipper design retainer lubrication model
Development of a new wear resistant coating by arc spraying of a steel-based cored wire
Lidong ZHAO, Pia KUTSCHMANN, Binyou FU, Dingyong HE
《机械工程前沿(英文)》 2009年 第4卷 第1期 页码 1-4 doi: 10.1007/s11465-009-0012-2
关键词: amorphous phase arc spraying microstructure wear cored wire
Development of a novel two-stage proportional valve with a pilot digital flow distribution
Qiang GAO, Yuchuan ZHU, Changwen WU, Yulei JIANG
《机械工程前沿(英文)》 2021年 第16卷 第2期 页码 420-434 doi: 10.1007/s11465-020-0622-2
关键词: two-stage proportional valve digital flow distribution high-speed on/off valve position tracking characteristic dynamic performance
Sawan KUMAR, Ajitanshu VEDRTNAM, S. J. PAWAR
《结构与土木工程前沿(英文)》 2019年 第13卷 第6期 页码 1446-1462 doi: 10.1007/s11709-019-0568-9
关键词: wood-plastic composites mechanical testing wear biodegradability injection molding weathering
Proportional directional valve based automatic steering system for tractors
Jin-yi LIU,Jing-quan TAN,En-rong MAO,Zheng-he SONG,Zhong-xiang ZHU
《信息与电子工程前沿(英文)》 2016年 第17卷 第5期 页码 458-464 doi: 10.1631/FITEE.1500172
关键词: Automatic steering system Hydraulic circuit Proportional directional valve Proportional-integral-derivative (PID) control
Mesh relationship modeling and dynamic characteristic analysis of external spur gears with gear wear
《机械工程前沿(英文)》 2022年 第17卷 第1期 页码 9-9 doi: 10.1007/s11465-021-0665-z
关键词: gear wear mesh relationship mesh stiffness transmission error vibration characteristics
《化学科学与工程前沿(英文)》 2023年 第17卷 第12期 页码 2114-2126 doi: 10.1007/s11705-023-2357-1
关键词: molybdenum disulfide nickel phyllosilicate epoxy resin flame retardancy
Comparative assessment of force, temperature, and wheel wear in sustainable grinding aerospace alloy
《机械工程前沿(英文)》 2023年 第18卷 第1期 doi: 10.1007/s11465-022-0719-x
关键词: grinding aerospace difficult-to-machine material biolubricant physicochemical property grindability
《结构与土木工程前沿(英文)》 2021年 第15卷 第4期 页码 1071-1071 doi: 10.1007/s11709-021-0736-6
The coupling of sand with ZVI/oxidants achieved proportional and highly efficient removal of arsenic
Sana Ullah, Xuejun Guo, Xiaoyan Luo, Xiangyuan Zhang, Yameng Li, Ziyu Liang
《环境科学与工程前沿(英文)》 2020年 第14卷 第6期 doi: 10.1007/s11783-020-1273-6
Modeling, simulation, and prediction of global energy indices: a differential approach
Stephen Ndubuisi NNAMCHI, Onyinyechi Adanma NNAMCHI, Janice Desire BUSINGYE, Maxwell Azubuike IJOMAH, Philip Ikechi OBASI
《能源前沿(英文)》 2022年 第16卷 第2期 页码 375-392 doi: 10.1007/s11708-021-0723-6
关键词: energy indices differential model normalization simulation inflation/deflation predictive factor and prediction rate
标题 作者 时间 类型 操作
Tool wear mechanisms in the machining of Nickel based super-alloys: A review
Waseem AKHTAR,Jianfei SUN,Pengfei SUN,Wuyi CHEN,Zawar SALEEM
期刊论文
Facile synthesis of polyaniline nanorods to simultaneously enhance the mechanical properties and wear
期刊论文
Ultrasonic assisted EDM: Effect of the workpiece vibration in the machining characteristics of FW4 Welded Metal
Mohammadreza SHABGARD, Hamed KAKOLVAND, Mirsadegh SEYEDZAVVAR, Ramin Mohammadpour SHOTORBANI
期刊论文
Integrated slipper retainer mechanism to eliminate slipper wear in high-speed axial piston pumps
期刊论文
Development of a new wear resistant coating by arc spraying of a steel-based cored wire
Lidong ZHAO, Pia KUTSCHMANN, Binyou FU, Dingyong HE
期刊论文
Development of a novel two-stage proportional valve with a pilot digital flow distribution
Qiang GAO, Yuchuan ZHU, Changwen WU, Yulei JIANG
期刊论文
Effect of wood dust type on mechanical properties, wear behavior, biodegradability, and resistance to
Sawan KUMAR, Ajitanshu VEDRTNAM, S. J. PAWAR
期刊论文
Proportional directional valve based automatic steering system for tractors
Jin-yi LIU,Jing-quan TAN,En-rong MAO,Zheng-he SONG,Zhong-xiang ZHU
期刊论文
Mesh relationship modeling and dynamic characteristic analysis of external spur gears with gear wear
期刊论文
Molybdenum disulfide@nickel phyllosilicate hybrid for improving the flame retardancy and wear resistance
期刊论文
Comparative assessment of force, temperature, and wheel wear in sustainable grinding aerospace alloy
期刊论文
Correction to: Effect of wood dust type on mechanical properties, wear behavior, biodegradability, and
期刊论文
The coupling of sand with ZVI/oxidants achieved proportional and highly efficient removal of arsenic
Sana Ullah, Xuejun Guo, Xiaoyan Luo, Xiangyuan Zhang, Yameng Li, Ziyu Liang
期刊论文