The Experts below are selected from a list of 312 Experts worldwide ranked by ideXlab platform
Mikael Olsson - One of the best experts on this subject based on the ideXlab platform.
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Process monitoring of Wire Drawing using vibration sensoring
Cirp Journal of Manufacturing Science and Technology, 2017Co-Authors: Lars Pejryd, Joakim Larsson, Mikael OlssonAbstract:Abstract Automating the detection of processing conditions that may lead to defects in the Wire during the Wire Drawing process is of high interest to the industry. Current practise is based primarily on operator experience. Increasing demands on product quality and process robustness emphasises the need for development of robust in-process detection methods. This work is focusing on investigating the potential of using vibration monitoring to detect process deficiencies or variations that may lead to defects in the product. Wire Drawing of a carbon steel in different lubricating situations was used to investigate vibration signal response together with force measurements and surface investigation of the Wire product. The results show that vibration measurement is capable of detecting loss of lubrication that leads to poor surface quality of the Wire.
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Process monitoring of Wire Drawing using vibration sensoring
Cirp Journal of Manufacturing Science and Technology, 2017Co-Authors: Lars Pejryd, Joakim Larsson, Mikael OlssonAbstract:Automating the detection of processing conditions that may lead to defects in the Wire during the Wire Drawing process is of high interest to the industry. Current practise is based primarily on op ...
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tribological testing of some potential pvd and cvd coatings for steel Wire Drawing dies
Nordtrib 2010 Storforsen 8-11 juni 2010, 2010Co-Authors: Maria Nilsson, Mikael OlssonAbstract:Cemented carbide is today the most frequently used Drawing die material in steel Wire Drawing applications. This is mainly due to the possibility to obtain a broad combination of hardness and toughness thus meeting the requirements concerning strength, crack resistance and wear resistance set by the Wire Drawing process. However, the increasing cost of cemented carbide in combination with the possibility to increase the wear resistance of steel through the deposition of wear resistant CVD and PVD coatings have enhanced the interest to replace cemented carbide Drawing dies with CVD and PVD coated steel Wire Drawing dies. In the present study, the possibility to replace cemented carbide Wire Drawing dies with CVD and PVD coated steel Drawing dies have been investigated by tribological characterisation, i.e. pin-on-disc and scratch testing, in combination with post-test observations of the tribo surfaces using scanning electron microscopy, energy dispersive X-ray spectroscopy and 3D surface profilometry. Based on the results obtained, CVD and PVD coatings aimed to provide improved tribological performance of steel Wire Drawing dies should display a smooth surface topography, a high wear resistance, a high fracture toughness (i.e. a high cracking and chipping resistance) and intrinsic low friction properties in contact with the Wire material. Also, the steel substrate used must display a sufficient load carrying capacity and resistance to thermal softening. Of the CVD and PVD coatings evaluated in the tribological tests, a CVD TiC and a PVD CrC/C coating displayed the most promising results.
F Montheillet - One of the best experts on this subject based on the ideXlab platform.
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A thermo-mechanical analysis of stability in dieless Wire Drawing
International Journal of Mechanical Sciences, 1997Co-Authors: R Fortunier, H Sassoulas, F MontheilletAbstract:The dieless Wire Drawing process is analyzed in detail by using a simple slice method. A thermomechanical analysis first shows that the stability of the process depends on the slope of the curve giving the load applied to the Wire as a function of the area reduction. It turns out that material parameters have a relatively large influence on the process, whereas the two process parameters having the main influence are the maximum strain rate reached at the end of the heating zone, and the maximum temperature of the Wire. The former has to be limited to ensure stability, whereas the latter must remain within a very small range (typically 1 degrees C). When these two conditions are fulfilled, relatively large and constant area reductions can be achieved by the dieless Wire Drawing process.
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A thermo-mechanical analysis of stability in dieless Wire Drawing
International Journal of Mechanical Sciences, 1997Co-Authors: R Fortunier, H Sassoulas, F MontheilletAbstract:Abstract The dieless Wire Drawing process is analyzed in detail by using a simple slice method. A thermomechanical analysis first shows that the stability of the process depends on the slope of the curve giving the load applied to the Wire as a function of the area reduction. It turns out that material parameters have a relatively large influence on the process, whereas the two process parameters having the main influence are the maximum strain rate reached at the end of the heating zone, and the maximum temperature of the Wire. The former has to be limited to ensure stability, whereas the latter must remain within a very small range (typically 1°C). When these two conditions are fulfilled, relatively large and constant area reductions can be achieved by the dieless Wire Drawing process.
Joakim Larsson - One of the best experts on this subject based on the ideXlab platform.
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Monitoring and evaluation of the Wire Drawing process using thermal imaging
The International Journal of Advanced Manufacturing Technology, 2019Co-Authors: Joakim Larsson, Anton Jansson, Patrik KarlssonAbstract:Wire Drawing is a cold work metal forming process which is dependant of a functional lubrication process. If the lubrication fails, there is a risk that both the tools and the produced Wire will be damaged. Process monitoring of Wire Drawing is rare in today’s industry since there are no commercialised methods that deliver consistent results. In this paper, a method for monitoring of the Wire Drawing process is proposed and evaluated. A thermal imaging camera was used for acquiring thermal images of the Wire as it leaves the Drawing tool. It was found that the proposed method could capture changes in the Wire Drawing process and had correlation to the Drawing force. An equation for estimating the friction condition between the Wire and the Drawing die using the Wire temperature was also proposed and evaluated against experiments. The results showed that the new equation produced results that correlated well to results obtained using a conventional equation that use Drawing force.
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Experimental comparison of roller die and conventional Wire Drawing
Journal of Materials Processing Technology, 2018Co-Authors: Karim El Amine, Joakim Larsson, Lars PejrydAbstract:In this work, the application of roller dies as an alternative to conventional dies in the Wire Drawing process – claimed in earlier works to offer many advantageous improvements – is evaluated. To ...
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Process monitoring of Wire Drawing using vibration sensoring
Cirp Journal of Manufacturing Science and Technology, 2017Co-Authors: Lars Pejryd, Joakim Larsson, Mikael OlssonAbstract:Abstract Automating the detection of processing conditions that may lead to defects in the Wire during the Wire Drawing process is of high interest to the industry. Current practise is based primarily on operator experience. Increasing demands on product quality and process robustness emphasises the need for development of robust in-process detection methods. This work is focusing on investigating the potential of using vibration monitoring to detect process deficiencies or variations that may lead to defects in the product. Wire Drawing of a carbon steel in different lubricating situations was used to investigate vibration signal response together with force measurements and surface investigation of the Wire product. The results show that vibration measurement is capable of detecting loss of lubrication that leads to poor surface quality of the Wire.
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Process monitoring of Wire Drawing using vibration sensoring
Cirp Journal of Manufacturing Science and Technology, 2017Co-Authors: Lars Pejryd, Joakim Larsson, Mikael OlssonAbstract:Automating the detection of processing conditions that may lead to defects in the Wire during the Wire Drawing process is of high interest to the industry. Current practise is based primarily on op ...
Lars Pejryd - One of the best experts on this subject based on the ideXlab platform.
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Experimental comparison of roller die and conventional Wire Drawing
Journal of Materials Processing Technology, 2018Co-Authors: Karim El Amine, Joakim Larsson, Lars PejrydAbstract:In this work, the application of roller dies as an alternative to conventional dies in the Wire Drawing process – claimed in earlier works to offer many advantageous improvements – is evaluated. To ...
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Process monitoring of Wire Drawing using vibration sensoring
Cirp Journal of Manufacturing Science and Technology, 2017Co-Authors: Lars Pejryd, Joakim Larsson, Mikael OlssonAbstract:Abstract Automating the detection of processing conditions that may lead to defects in the Wire during the Wire Drawing process is of high interest to the industry. Current practise is based primarily on operator experience. Increasing demands on product quality and process robustness emphasises the need for development of robust in-process detection methods. This work is focusing on investigating the potential of using vibration monitoring to detect process deficiencies or variations that may lead to defects in the product. Wire Drawing of a carbon steel in different lubricating situations was used to investigate vibration signal response together with force measurements and surface investigation of the Wire product. The results show that vibration measurement is capable of detecting loss of lubrication that leads to poor surface quality of the Wire.
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Process monitoring of Wire Drawing using vibration sensoring
Cirp Journal of Manufacturing Science and Technology, 2017Co-Authors: Lars Pejryd, Joakim Larsson, Mikael OlssonAbstract:Automating the detection of processing conditions that may lead to defects in the Wire during the Wire Drawing process is of high interest to the industry. Current practise is based primarily on op ...
Tao Xie - One of the best experts on this subject based on the ideXlab platform.
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titanium Wire Drawing with longitudinal torsional composite ultrasonic vibration
The International Journal of Advanced Manufacturing Technology, 2016Co-Authors: Chongqiu Yang, Xiaobiao Sha, Tao XieAbstract:Compared with the conventional Wire Drawing process without ultrasonic vibration, which leads to high energy consumption and rough surface finish, the influences of longitudinal-torsional (L&T) composite ultrasonic vibration on titanium Wire Drawing process were investigated. The effects were discussed both numerically and experimentally in terms of friction force and stress, Drawing force and stress, and processed Wire surface quality. The analysis indicates that torsional ultrasonic vibration would increase the friction force in some extent, but only modestly, while longitudinal ultrasonic vibration is apparently beneficial to reducing the friction force in Wire Drawing process. Furthermore, both the longitudinal vibration and the L&T composite vibration are beneficial to decreasing the Drawing force and improving the plastic deformation of titanium Wires, especially for the latter. In addition, the longitudinal ultrasonic vibration could improve the surface quality of processed Wires due to the friction force reduction. The L&T composite ultrasonic vibration could apparently reduce the Drawing force as the result of its slight higher friction force within the contact area, which could provide the required plastic deformation energy at the cost of surface quality. The present research provides a new methodology for the ultrasonic titanium Wire Drawing process.
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Investigations on the effects of ultrasonic vibrations in the Wire Drawing
2008 IEEE Ultrasonics Symposium, 2008Co-Authors: Jiangbo Yuan, Tao XieAbstract:A system of the Wire Drawing with ultrasonic vibration was designed and built to investigate the feasibility that the ultrasonic Wire Drawing technology with ultrasonic vibration can be applied to practice process. The Drawing experiments of brass Wire were performed on a Drawing machine. The Drawing velocity was 133.13 mm/s. The experimental results demonstrate that the ultrasonic vibration obviously reduced the Drawing force by approximately 29%, effectively prolonged the tension regulator cycle of the Drawing machine and reduced the tensile force to make Drawing process steady. The ultrasonic vibration reduced the uneven deformation of the Wire and greatly improved the surface quality of the Wire. The current work provides the powerful support for the practice application of the ultrasonic Wire Drawing technology.
