The Experts below are selected from a list of 282 Experts worldwide ranked by ideXlab platform
Rupinder Singh - One of the best experts on this subject based on the ideXlab platform.
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Flank Wear and Machining Performance of Cryogenically Treated Tungsten Carbide Inserts
Materials and Manufacturing Processes, 2011Co-Authors: Simranpreet Singh Gill, Harpreet Singh, Rupinder Singh, Jagdev SinghAbstract:Cryogenic treatment has been accredited as a means of enhancing the cutting life of Tungsten Carbide turning inserts. Most of the research conducted till date has been limited to evaluate the percentage improvement in tool life of cryogenically treated Tungsten Carbide inserts but no sincere efforts have been made to excavate the mechanism responsible for this improvement. In order to understand the mechanism accountable for enhanced tool life of Tungsten Carbide inserts, a comparative investigation of the wear behavior and machining performance of cryogenically treated Tungsten Carbide inserts in orthogonal turning has been carried out in this study. The commercially available uncoated square shaped Tungsten Carbide inserts (P25) were procured and subjected to cryogenic treatment at two levels −110°C (shallow treatment) and −196°C (deep treatment) of temperature independently. The criterion selected for determining the turning performance was based on the maximum flank wear (0.6 mm) as recommended in ISO...
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investigation on wear behaviour of cryogenically treated tialn coated Tungsten Carbide inserts in turning
International Journal of Machine Tools & Manufacture, 2011Co-Authors: Simranpreet Singh Gill, Harpreet Singh, Jagdev Singh, Rupinder SinghAbstract:Abstract Cryogenic treatment has been ascribed as a way of improving the cutting life of Tungsten Carbide turning inserts. Most of the research conducted till date has not reported any effort to excavate the effect of cryogenic treatment on the performance of coated Tungsten Carbide inserts in terms of adhesion strength of coatings deposited on Tungsten Carbide substrate. In order to understand the effect of cryogenic treatment on the adhesion strength of coatings, a comparative investigation of the wear behaviour and machining performance of cryogenically treated coated Tungsten Carbide inserts in orthogonal turning has been carried out in this study. The commercially available TiAlN coated square shaped Tungsten Carbide inserts (P25) were procured and subjected to cryogenic treatment at two levels −110 °C (shallow treatment) and −196 °C (deep treatment) of temperature independently. The criterion selected for determining the turning performance was based on the maximum flank wear (0.6 mm) as recommended in ISO 3685-1993. The results showed that shallow cryogenically treated coated Tungsten Carbide inserts performed significantly better as compared with deep cryogenically treated and untreated inserts. Major outcome of the present study includes a substantial decrease in tool life of deep cryogenically treated inserts as compared to untreated inserts indicating the destructive effect of deep cryogenic temperature (−196 °C) on TiAlN coated inserts which is further supported by VDI-3198 indentation test.
Simranpreet Singh Gill - One of the best experts on this subject based on the ideXlab platform.
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Flank Wear and Machining Performance of Cryogenically Treated Tungsten Carbide Inserts
Materials and Manufacturing Processes, 2011Co-Authors: Simranpreet Singh Gill, Harpreet Singh, Rupinder Singh, Jagdev SinghAbstract:Cryogenic treatment has been accredited as a means of enhancing the cutting life of Tungsten Carbide turning inserts. Most of the research conducted till date has been limited to evaluate the percentage improvement in tool life of cryogenically treated Tungsten Carbide inserts but no sincere efforts have been made to excavate the mechanism responsible for this improvement. In order to understand the mechanism accountable for enhanced tool life of Tungsten Carbide inserts, a comparative investigation of the wear behavior and machining performance of cryogenically treated Tungsten Carbide inserts in orthogonal turning has been carried out in this study. The commercially available uncoated square shaped Tungsten Carbide inserts (P25) were procured and subjected to cryogenic treatment at two levels −110°C (shallow treatment) and −196°C (deep treatment) of temperature independently. The criterion selected for determining the turning performance was based on the maximum flank wear (0.6 mm) as recommended in ISO...
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investigation on wear behaviour of cryogenically treated tialn coated Tungsten Carbide inserts in turning
International Journal of Machine Tools & Manufacture, 2011Co-Authors: Simranpreet Singh Gill, Harpreet Singh, Jagdev Singh, Rupinder SinghAbstract:Abstract Cryogenic treatment has been ascribed as a way of improving the cutting life of Tungsten Carbide turning inserts. Most of the research conducted till date has not reported any effort to excavate the effect of cryogenic treatment on the performance of coated Tungsten Carbide inserts in terms of adhesion strength of coatings deposited on Tungsten Carbide substrate. In order to understand the effect of cryogenic treatment on the adhesion strength of coatings, a comparative investigation of the wear behaviour and machining performance of cryogenically treated coated Tungsten Carbide inserts in orthogonal turning has been carried out in this study. The commercially available TiAlN coated square shaped Tungsten Carbide inserts (P25) were procured and subjected to cryogenic treatment at two levels −110 °C (shallow treatment) and −196 °C (deep treatment) of temperature independently. The criterion selected for determining the turning performance was based on the maximum flank wear (0.6 mm) as recommended in ISO 3685-1993. The results showed that shallow cryogenically treated coated Tungsten Carbide inserts performed significantly better as compared with deep cryogenically treated and untreated inserts. Major outcome of the present study includes a substantial decrease in tool life of deep cryogenically treated inserts as compared to untreated inserts indicating the destructive effect of deep cryogenic temperature (−196 °C) on TiAlN coated inserts which is further supported by VDI-3198 indentation test.
Jagdev Singh - One of the best experts on this subject based on the ideXlab platform.
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Flank Wear and Machining Performance of Cryogenically Treated Tungsten Carbide Inserts
Materials and Manufacturing Processes, 2011Co-Authors: Simranpreet Singh Gill, Harpreet Singh, Rupinder Singh, Jagdev SinghAbstract:Cryogenic treatment has been accredited as a means of enhancing the cutting life of Tungsten Carbide turning inserts. Most of the research conducted till date has been limited to evaluate the percentage improvement in tool life of cryogenically treated Tungsten Carbide inserts but no sincere efforts have been made to excavate the mechanism responsible for this improvement. In order to understand the mechanism accountable for enhanced tool life of Tungsten Carbide inserts, a comparative investigation of the wear behavior and machining performance of cryogenically treated Tungsten Carbide inserts in orthogonal turning has been carried out in this study. The commercially available uncoated square shaped Tungsten Carbide inserts (P25) were procured and subjected to cryogenic treatment at two levels −110°C (shallow treatment) and −196°C (deep treatment) of temperature independently. The criterion selected for determining the turning performance was based on the maximum flank wear (0.6 mm) as recommended in ISO...
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investigation on wear behaviour of cryogenically treated tialn coated Tungsten Carbide inserts in turning
International Journal of Machine Tools & Manufacture, 2011Co-Authors: Simranpreet Singh Gill, Harpreet Singh, Jagdev Singh, Rupinder SinghAbstract:Abstract Cryogenic treatment has been ascribed as a way of improving the cutting life of Tungsten Carbide turning inserts. Most of the research conducted till date has not reported any effort to excavate the effect of cryogenic treatment on the performance of coated Tungsten Carbide inserts in terms of adhesion strength of coatings deposited on Tungsten Carbide substrate. In order to understand the effect of cryogenic treatment on the adhesion strength of coatings, a comparative investigation of the wear behaviour and machining performance of cryogenically treated coated Tungsten Carbide inserts in orthogonal turning has been carried out in this study. The commercially available TiAlN coated square shaped Tungsten Carbide inserts (P25) were procured and subjected to cryogenic treatment at two levels −110 °C (shallow treatment) and −196 °C (deep treatment) of temperature independently. The criterion selected for determining the turning performance was based on the maximum flank wear (0.6 mm) as recommended in ISO 3685-1993. The results showed that shallow cryogenically treated coated Tungsten Carbide inserts performed significantly better as compared with deep cryogenically treated and untreated inserts. Major outcome of the present study includes a substantial decrease in tool life of deep cryogenically treated inserts as compared to untreated inserts indicating the destructive effect of deep cryogenic temperature (−196 °C) on TiAlN coated inserts which is further supported by VDI-3198 indentation test.
Harpreet Singh - One of the best experts on this subject based on the ideXlab platform.
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Flank Wear and Machining Performance of Cryogenically Treated Tungsten Carbide Inserts
Materials and Manufacturing Processes, 2011Co-Authors: Simranpreet Singh Gill, Harpreet Singh, Rupinder Singh, Jagdev SinghAbstract:Cryogenic treatment has been accredited as a means of enhancing the cutting life of Tungsten Carbide turning inserts. Most of the research conducted till date has been limited to evaluate the percentage improvement in tool life of cryogenically treated Tungsten Carbide inserts but no sincere efforts have been made to excavate the mechanism responsible for this improvement. In order to understand the mechanism accountable for enhanced tool life of Tungsten Carbide inserts, a comparative investigation of the wear behavior and machining performance of cryogenically treated Tungsten Carbide inserts in orthogonal turning has been carried out in this study. The commercially available uncoated square shaped Tungsten Carbide inserts (P25) were procured and subjected to cryogenic treatment at two levels −110°C (shallow treatment) and −196°C (deep treatment) of temperature independently. The criterion selected for determining the turning performance was based on the maximum flank wear (0.6 mm) as recommended in ISO...
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investigation on wear behaviour of cryogenically treated tialn coated Tungsten Carbide inserts in turning
International Journal of Machine Tools & Manufacture, 2011Co-Authors: Simranpreet Singh Gill, Harpreet Singh, Jagdev Singh, Rupinder SinghAbstract:Abstract Cryogenic treatment has been ascribed as a way of improving the cutting life of Tungsten Carbide turning inserts. Most of the research conducted till date has not reported any effort to excavate the effect of cryogenic treatment on the performance of coated Tungsten Carbide inserts in terms of adhesion strength of coatings deposited on Tungsten Carbide substrate. In order to understand the effect of cryogenic treatment on the adhesion strength of coatings, a comparative investigation of the wear behaviour and machining performance of cryogenically treated coated Tungsten Carbide inserts in orthogonal turning has been carried out in this study. The commercially available TiAlN coated square shaped Tungsten Carbide inserts (P25) were procured and subjected to cryogenic treatment at two levels −110 °C (shallow treatment) and −196 °C (deep treatment) of temperature independently. The criterion selected for determining the turning performance was based on the maximum flank wear (0.6 mm) as recommended in ISO 3685-1993. The results showed that shallow cryogenically treated coated Tungsten Carbide inserts performed significantly better as compared with deep cryogenically treated and untreated inserts. Major outcome of the present study includes a substantial decrease in tool life of deep cryogenically treated inserts as compared to untreated inserts indicating the destructive effect of deep cryogenic temperature (−196 °C) on TiAlN coated inserts which is further supported by VDI-3198 indentation test.
Pei Kang Shen - One of the best experts on this subject based on the ideXlab platform.
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Preparation of Pure Tungsten Carbide and Catalytic Activity of Platinum on a Tungsten Carbide Nanocrystalline Support for Oxygen Reduction
ECS Electrochemistry Letters, 2019Co-Authors: Ming Nie, Pei Kang Shen, Zidong Wei, Chaolun LiangAbstract:Single nanocrystalline Tungsten Carbide has been firstly synthesized by an intermittent microwave heating (IMH) method at an optimized ratio of Tungsten to carbon. The X-ray diffraction (XRD) determination confirmed that the Tungsten Carbide prepared from a precursor of 30 wt% W and 70 wt%C gives almost pure WC nanocrystal with hexagon-type structure. The Pt nanoparticles supported on single nanocrystalline Tungsten Carbide (Pt-WC/C) electrocatalysts are prepared by the IMH method. The performance for oxygen reduction on Pt-WC/C is tested in alkaline media. The Pt-WC/C with one third of Pt loadings gives more positive onset potential and higher exchanging current density compared with Pt/C, resulting in a 50 mV overpotential reduction for oxygen reduction reaction.
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Tungsten Carbide nanocrystal promoted pt c electrocatalysts for oxygen reduction
Journal of Physical Chemistry B, 2005Co-Authors: Hui Meng, Pei Kang ShenAbstract:Tungsten Carbide nanocrystals on carbon (W2C/C) and Tungsten Carbide nanocrystals and Pt on carbon (Pt−W2C/C) composite electrocatalysts were prepared by the intermittent microwave heating (IMH) method and tested for the electroreduction of oxygen in the acidic media for the first time. The results revealed that the Tungsten Carbide nanocrystal promoted Pt/C electrocatalyst was very active for ORR with the onset potential of 1.0 V vs SHE at ambient temperature that is over 100 mV more positive compared with that of traditional Pt/C electrocatalyst. The kinetic parameters were determined. The exchange current densities at both high and low overpotential regions are two orders higher for ORR on Pt−W2C/C than that on Pt/C, showing a synergetic effect to improve the activity for ORR. The novel electrocatalysts show a poisoning resistant property toward methanol.
