The Experts below are selected from a list of 888 Experts worldwide ranked by ideXlab platform

Wansheng Zhao - One of the best experts on this subject based on the ideXlab platform.

  • An experimental study on the effect of parameters on the depth of crater machined by electrostatic field–induced Electrolyte Jet micro electrical discharge machining
    Advances in Mechanical Engineering, 2016
    Co-Authors: Yaou Zhang, Ning Han, Xiaoming Kang, Wansheng Zhao
    Abstract:

    Electrostatic field–induced Electrolyte Jet micro electrical discharge machining depends on heat generated by the periodic pulsed discharge between the workpiece and the Electrolyte fine Jet from the tip of Taylor cone, induced by the intense electric field, to erode the material from the workpiece. To further investigate the characteristics of this discharge process, with the NaCl solution as the electrostatic field–induced Electrolyte Jet Electrolyte and the silicon wafer as the workpiece, the governing factors of machining polarity, nozzle-to-workpiece distance, voltage applied between positive and negative polarities, and the effect of concentration of the Electrolyte on the depth of crater after a single electrostatic field–induced Electrolyte Jet discharge have been studied. The experimental results show that the average depth of crater increases with the increase in the voltage applied between the nozzle and the workpiece, and increases with the increase in the concentration of the Electrolyte, but decreases with the increase in the distance between the nozzle and the workpiece. The results have also demonstrated that the polarity has no clear influence on the average depth of crater after a single discharge.

  • an experimental study on the effect of parameters on the depth of crater machined by electrostatic field induced Electrolyte Jet micro electrical discharge machining
    Advances in Mechanical Engineering, 2016
    Co-Authors: Yaou Zhang, Ning Han, Xiaoming Kang, Wansheng Zhao
    Abstract:

    Electrostatic field–induced Electrolyte Jet micro electrical discharge machining depends on heat generated by the periodic pulsed discharge between the workpiece and the Electrolyte fine Jet from the tip of Taylor cone, induced by the intense electric field, to erode the material from the workpiece. To further investigate the characteristics of this discharge process, with the NaCl solution as the electrostatic field–induced Electrolyte Jet Electrolyte and the silicon wafer as the workpiece, the governing factors of machining polarity, nozzle-to-workpiece distance, voltage applied between positive and negative polarities, and the effect of concentration of the Electrolyte on the depth of crater after a single electrostatic field–induced Electrolyte Jet discharge have been studied. The experimental results show that the average depth of crater increases with the increase in the voltage applied between the nozzle and the workpiece, and increases with the increase in the concentration of the Electrolyte, but decreases with the increase in the distance between the nozzle and the workpiece. The results have also demonstrated that the polarity has no clear influence on the average depth of crater after a single discharge.

Hua Zhang - One of the best experts on this subject based on the ideXlab platform.

  • laser drilling assisted with Jet electrochemical machining for the minimization of recast and spatter
    The International Journal of Advanced Manufacturing Technology, 2012
    Co-Authors: Hua Zhang, Jia Wen Xu
    Abstract:

    Laser drilling is increasingly becoming the method of choice for precision drilling for a variety of components. The most important application is the drilling of fine cooling holes in aero turbine engine components such as nozzle guide vanes and blades. However, a number of defects such as recast, spatter and heat-affected zone limit the application. The elimination of these defects is the subject of intense research. This paper presents a novel hybrid process of laser drilling assisted with Jet electrochemical machining (JECM-LD) which can minimize the recast and spatter. The process is based on the application of a Jet Electrolyte, being aligned coaxially with the focused laser beam, on the workpiece surface. The effects of the Jet Electrolyte during the process mostly consist of electrochemical reaction, effective cooling with materials and transporting debris. JECM-LD experiments were performed on 0.5-mm thickness 321 stainless steel with pulsed Nd:YAG laser at second harmonic wavelength. The optical microscope and scanning electron microscope were used to detect the experimental results. It is found that the spatter has been reduced more than 95%, and recast has been reduced more than 90% during the JECM-LD compared with laser drilling in ambient atmosphere conditions.

  • Laser drilling assisted with Jet electrochemical machining for the minimization of recast and spatter
    The International Journal of Advanced Manufacturing Technology, 2012
    Co-Authors: Hua Zhang
    Abstract:

    Laser drilling is increasingly becoming the method of choice for precision drilling for a variety of components. The most important application is the drilling of fine cooling holes in aero turbine engine components such as nozzle guide vanes and blades. However, a number of defects such as recast, spatter and heat-affected zone limit the application. The elimination of these defects is the subject of intense research. This paper presents a novel hybrid process of laser drilling assisted with Jet electrochemical machining (JECM-LD) which can minimize the recast and spatter. The process is based on the application of a Jet Electrolyte, being aligned coaxially with the focused laser beam, on the workpiece surface. The effects of the Jet Electrolyte during the process mostly consist of electrochemical reaction, effective cooling with materials and transporting debris. JECM-LD experiments were performed on 0.5-mm thickness 321 stainless steel with pulsed Nd:YAG laser at second harmonic wavelength. The optical microscope and scanning electron microscope were used to detect the experimental results. It is found that the spatter has been reduced more than 95%, and recast has been reduced more than 90% during the JECM-LD compared with laser drilling in ambient atmosphere conditions.

  • Green Laser Drilling Assisted with Jet Electrochemical Machining of Nickel-Based Superalloy
    Key Engineering Materials, 2010
    Co-Authors: Hua Zhang, Jia Wen Xu, Jing Wang
    Abstract:

    Laser drilling is extensively used in the aerospace and aircraft industries. The most important application is the drilling of fine cooling holes in aero turbine engine components such as nozzle guide vanes and blades. However, laser-drilled holes are typically associated with a number of inherent defects such as recast layer and spatter. In order to solve these problems, a novel hybrid process of laser drilling assisted with Jet electrochemical machining (JECM-LD) has been developed to improve the overall quality of laser-drilled holes. The process based on the application of a Jet Electrolyte, being aligned coaxially with the focused laser beam, on the workpiece surface. The effects of the Jet Electrolyte during the process mostly consist of electro chemical reaction, effective cooling with materials and transporting debris. A pulsed Nd:YAG laser with frequency doubling is used in the JECM-LD experiments. On the basis of a measurement of laser attenuation in Electrolyte, an experimental apparatus system is built and JECM-LD experiments are performed on 0.5mm thickness nickel-based superalloy sheets with the system. The optical microscope is used to detect the experimental results. It is found that the recast layer and spatter have been effectively removed during the JECM-LD compared with laser drilling in ambient atmosphere conditions. The efficiency of JECM-LD with millisecond green laser is about 70% of laser drilling in air.

  • investigation of a novel hybrid process of laser drilling assisted with Jet electrochemical machining
    Optics and Lasers in Engineering, 2009
    Co-Authors: Hua Zhang, Jia Wen Xu, Jiming Wang
    Abstract:

    Abstract Recast layer and spatter are two inherent defects commonly associated with holes produced with laser drilling. This paper reports a novel hybrid process of laser drilling assisted with Jet electrochemical machining (JECM-LD) that aims to minimize such defects and improve the quality of laser-drilled holes. The process based on the application of a Jet Electrolyte, being aligned coaxially with the focused laser beam, on the workpiece surface during laser drilling. The effect of the Jet Electrolyte mainly is an electrochemical reaction with materials. The Jet Electrolyte also cools the workpiece and transports debris during the process. On the basis of a measurement of laser attenuation in Electrolyte, an experimental apparatus system is made and JECM-LD experiments have been performed on 0.5-mm-thick 321S20 stainless steel with two lasers at wavelength of 1064 and 532 nm. It is shown that recast layer and spatter have been effectively reduced during the JECM-LD compared with laser drilling in ambient atmosphere conditions.

Jiming Wang - One of the best experts on this subject based on the ideXlab platform.

  • investigation of a novel hybrid process of laser drilling assisted with Jet electrochemical machining
    Optics and Lasers in Engineering, 2009
    Co-Authors: Hua Zhang, Jia Wen Xu, Jiming Wang
    Abstract:

    Abstract Recast layer and spatter are two inherent defects commonly associated with holes produced with laser drilling. This paper reports a novel hybrid process of laser drilling assisted with Jet electrochemical machining (JECM-LD) that aims to minimize such defects and improve the quality of laser-drilled holes. The process based on the application of a Jet Electrolyte, being aligned coaxially with the focused laser beam, on the workpiece surface during laser drilling. The effect of the Jet Electrolyte mainly is an electrochemical reaction with materials. The Jet Electrolyte also cools the workpiece and transports debris during the process. On the basis of a measurement of laser attenuation in Electrolyte, an experimental apparatus system is made and JECM-LD experiments have been performed on 0.5-mm-thick 321S20 stainless steel with two lasers at wavelength of 1064 and 532 nm. It is shown that recast layer and spatter have been effectively reduced during the JECM-LD compared with laser drilling in ambient atmosphere conditions.

Yaou Zhang - One of the best experts on this subject based on the ideXlab platform.

  • An experimental study on the effect of parameters on the depth of crater machined by electrostatic field–induced Electrolyte Jet micro electrical discharge machining
    Advances in Mechanical Engineering, 2016
    Co-Authors: Yaou Zhang, Ning Han, Xiaoming Kang, Wansheng Zhao
    Abstract:

    Electrostatic field–induced Electrolyte Jet micro electrical discharge machining depends on heat generated by the periodic pulsed discharge between the workpiece and the Electrolyte fine Jet from the tip of Taylor cone, induced by the intense electric field, to erode the material from the workpiece. To further investigate the characteristics of this discharge process, with the NaCl solution as the electrostatic field–induced Electrolyte Jet Electrolyte and the silicon wafer as the workpiece, the governing factors of machining polarity, nozzle-to-workpiece distance, voltage applied between positive and negative polarities, and the effect of concentration of the Electrolyte on the depth of crater after a single electrostatic field–induced Electrolyte Jet discharge have been studied. The experimental results show that the average depth of crater increases with the increase in the voltage applied between the nozzle and the workpiece, and increases with the increase in the concentration of the Electrolyte, but decreases with the increase in the distance between the nozzle and the workpiece. The results have also demonstrated that the polarity has no clear influence on the average depth of crater after a single discharge.

  • an experimental study on the effect of parameters on the depth of crater machined by electrostatic field induced Electrolyte Jet micro electrical discharge machining
    Advances in Mechanical Engineering, 2016
    Co-Authors: Yaou Zhang, Ning Han, Xiaoming Kang, Wansheng Zhao
    Abstract:

    Electrostatic field–induced Electrolyte Jet micro electrical discharge machining depends on heat generated by the periodic pulsed discharge between the workpiece and the Electrolyte fine Jet from the tip of Taylor cone, induced by the intense electric field, to erode the material from the workpiece. To further investigate the characteristics of this discharge process, with the NaCl solution as the electrostatic field–induced Electrolyte Jet Electrolyte and the silicon wafer as the workpiece, the governing factors of machining polarity, nozzle-to-workpiece distance, voltage applied between positive and negative polarities, and the effect of concentration of the Electrolyte on the depth of crater after a single electrostatic field–induced Electrolyte Jet discharge have been studied. The experimental results show that the average depth of crater increases with the increase in the voltage applied between the nozzle and the workpiece, and increases with the increase in the concentration of the Electrolyte, but decreases with the increase in the distance between the nozzle and the workpiece. The results have also demonstrated that the polarity has no clear influence on the average depth of crater after a single discharge.

Jia Wen Xu - One of the best experts on this subject based on the ideXlab platform.

  • laser drilling assisted with Jet electrochemical machining for the minimization of recast and spatter
    The International Journal of Advanced Manufacturing Technology, 2012
    Co-Authors: Hua Zhang, Jia Wen Xu
    Abstract:

    Laser drilling is increasingly becoming the method of choice for precision drilling for a variety of components. The most important application is the drilling of fine cooling holes in aero turbine engine components such as nozzle guide vanes and blades. However, a number of defects such as recast, spatter and heat-affected zone limit the application. The elimination of these defects is the subject of intense research. This paper presents a novel hybrid process of laser drilling assisted with Jet electrochemical machining (JECM-LD) which can minimize the recast and spatter. The process is based on the application of a Jet Electrolyte, being aligned coaxially with the focused laser beam, on the workpiece surface. The effects of the Jet Electrolyte during the process mostly consist of electrochemical reaction, effective cooling with materials and transporting debris. JECM-LD experiments were performed on 0.5-mm thickness 321 stainless steel with pulsed Nd:YAG laser at second harmonic wavelength. The optical microscope and scanning electron microscope were used to detect the experimental results. It is found that the spatter has been reduced more than 95%, and recast has been reduced more than 90% during the JECM-LD compared with laser drilling in ambient atmosphere conditions.

  • Green Laser Drilling Assisted with Jet Electrochemical Machining of Nickel-Based Superalloy
    Key Engineering Materials, 2010
    Co-Authors: Hua Zhang, Jia Wen Xu, Jing Wang
    Abstract:

    Laser drilling is extensively used in the aerospace and aircraft industries. The most important application is the drilling of fine cooling holes in aero turbine engine components such as nozzle guide vanes and blades. However, laser-drilled holes are typically associated with a number of inherent defects such as recast layer and spatter. In order to solve these problems, a novel hybrid process of laser drilling assisted with Jet electrochemical machining (JECM-LD) has been developed to improve the overall quality of laser-drilled holes. The process based on the application of a Jet Electrolyte, being aligned coaxially with the focused laser beam, on the workpiece surface. The effects of the Jet Electrolyte during the process mostly consist of electro chemical reaction, effective cooling with materials and transporting debris. A pulsed Nd:YAG laser with frequency doubling is used in the JECM-LD experiments. On the basis of a measurement of laser attenuation in Electrolyte, an experimental apparatus system is built and JECM-LD experiments are performed on 0.5mm thickness nickel-based superalloy sheets with the system. The optical microscope is used to detect the experimental results. It is found that the recast layer and spatter have been effectively removed during the JECM-LD compared with laser drilling in ambient atmosphere conditions. The efficiency of JECM-LD with millisecond green laser is about 70% of laser drilling in air.

  • investigation of a novel hybrid process of laser drilling assisted with Jet electrochemical machining
    Optics and Lasers in Engineering, 2009
    Co-Authors: Hua Zhang, Jia Wen Xu, Jiming Wang
    Abstract:

    Abstract Recast layer and spatter are two inherent defects commonly associated with holes produced with laser drilling. This paper reports a novel hybrid process of laser drilling assisted with Jet electrochemical machining (JECM-LD) that aims to minimize such defects and improve the quality of laser-drilled holes. The process based on the application of a Jet Electrolyte, being aligned coaxially with the focused laser beam, on the workpiece surface during laser drilling. The effect of the Jet Electrolyte mainly is an electrochemical reaction with materials. The Jet Electrolyte also cools the workpiece and transports debris during the process. On the basis of a measurement of laser attenuation in Electrolyte, an experimental apparatus system is made and JECM-LD experiments have been performed on 0.5-mm-thick 321S20 stainless steel with two lasers at wavelength of 1064 and 532 nm. It is shown that recast layer and spatter have been effectively reduced during the JECM-LD compared with laser drilling in ambient atmosphere conditions.