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Study on Burr Formation Mechanism When Turning Nickel-Based Alloys.

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Title: Study on Burr Formation Mechanism When Turning Nickel-Based Alloys.
Authors: Khidhir, Basim A.1, Mohamed, Bashir2
Source: Experimental Techniques. Sep/Oct2013, Vol. 37 Issue 5, p14-20. 7p.
Subjects: Numerical control of machine tools, Machine tools -- Automatic control, Burr, Chip, Nickel, Alloys, Shear (Mechanics)
Abstract: The aim of this paper was to introduce the study on burr formation mechanism of nickel-based Hastelloy C-276 in the turning process. The process is monitored using a high-speed camera mounted on a computer numerical control (CNC) turning machine. The captured photographs show that the burr starts appearing on the edge of an uncut surface when the engagement with the chip-workpiece contact area is complete and increases accordingly during the process of hitting the cutting edge and causing chipping wear. The study shows that the initializing of chip burr formation can be divided into two stages: creating and mounting up. Creating of burr formation is characterized by the 'reaction of shear formation' of the cutting force on the edge of chip for an unmachined surface, while mounting up increasing in size and forcing the chip to change its direction shoots up the rake face. This edge of the burr will separate and re-attach with the burr edge again during mounting up, thus creating a chain web shape on the edge of the uncut surface and causing edge chipping. The results show that the approach angle has a significant effect on burr formation. [ABSTRACT FROM AUTHOR]
Copyright of Experimental Techniques is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: <searchLink fieldCode="JN" term="%22Experimental+Techniques%22">Experimental Techniques</searchLink>. Sep/Oct2013, Vol. 37 Issue 5, p14-20. 7p.
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  Data: <searchLink fieldCode="DE" term="%22Numerical+control+of+machine+tools%22">Numerical control of machine tools</searchLink><br /><searchLink fieldCode="DE" term="%22Machine+tools+--+Automatic+control%22">Machine tools -- Automatic control</searchLink><br /><searchLink fieldCode="DE" term="%22Burr%2C+Chip%22">Burr, Chip</searchLink><br /><searchLink fieldCode="DE" term="%22Nickel%22">Nickel</searchLink><br /><searchLink fieldCode="DE" term="%22Alloys%22">Alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Shear+%28Mechanics%29%22">Shear (Mechanics)</searchLink>
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  Data: The aim of this paper was to introduce the study on burr formation mechanism of nickel-based Hastelloy C-276 in the turning process. The process is monitored using a high-speed camera mounted on a computer numerical control (CNC) turning machine. The captured photographs show that the burr starts appearing on the edge of an uncut surface when the engagement with the chip-workpiece contact area is complete and increases accordingly during the process of hitting the cutting edge and causing chipping wear. The study shows that the initializing of chip burr formation can be divided into two stages: creating and mounting up. Creating of burr formation is characterized by the 'reaction of shear formation' of the cutting force on the edge of chip for an unmachined surface, while mounting up increasing in size and forcing the chip to change its direction shoots up the rake face. This edge of the burr will separate and re-attach with the burr edge again during mounting up, thus creating a chain web shape on the edge of the uncut surface and causing edge chipping. The results show that the approach angle has a significant effect on burr formation. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Experimental Techniques is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1111/j.1747-1567.2011.00725.x
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      – Code: eng
        Text: English
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        PageCount: 7
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      – SubjectFull: Numerical control of machine tools
        Type: general
      – SubjectFull: Machine tools -- Automatic control
        Type: general
      – SubjectFull: Burr, Chip
        Type: general
      – SubjectFull: Nickel
        Type: general
      – SubjectFull: Alloys
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      – SubjectFull: Shear (Mechanics)
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              Text: Sep/Oct2013
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