Diamond coating deposited on the inner wall of annular workpiece by rotating arc heating

LI Guohua; CUI Yuming; DONG Wang; JIANG Long

doi:10.13394/j.cnki.jgszz.2021.0103

Volume 42 Issue 1

Mar. 2022

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LI Guohua, CUI Yuming, DONG Wang, JIANG Long. Diamond coating deposited on the inner wall of annular workpiece by rotating arc heating[J]. Diamond & Abrasives Engineering, 2022, 42(1): 42-46. doi: 10.13394/j.cnki.jgszz.2021.0103

Citation:

LI Guohua, CUI Yuming, DONG Wang, JIANG Long. Diamond coating deposited on the inner wall of annular workpiece by rotating arc heating[J]. Diamond & Abrasives Engineering, 2022, 42(1): 42-46. doi: 10.13394/j.cnki.jgszz.2021.0103

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Diamond coating deposited on the inner wall of annular workpiece by rotating arc heating

doi: 10.13394/j.cnki.jgszz.2021.0103

LI Guohua^1
,,
CUI Yuming¹,
DONG Wang¹,
JIANG Long^{1, 2
,
,}

1.
Hebei Plasma Diamond Technology Co., Ltd., Shijiazhuang 050081, China
2.
Hebei Institute of Laser, Shijiazhuang 050081, China

More Information

Received Date: 2020-11-26
Accepted Date: 2021-08-24
Rev Recd Date: 2021-07-30

Available Online: 2022-03-17

Abstract

Abstract

A plasma torch with split anode and rotating arc was developed. The diamond was coated on the inner wall of large diameter annular workpiece by the torch. The umbrella-like arc formed by the movable anode makes the axial working gas blow vertically to the inner wall of the annular workpiece. The parameters of arc under different anode diameters were tested, and the arc shap was taken by camera. High quality diamond coatings were successfully deposited on the inner surface of cemented carbide drawing die with inner diameter of 180 mm and graphite with inner diameter of 100 mm. The composition and surface morphologies of the coating were analyzed by Raman spectroscopy and scanning electron microscopy. The diamond coating cemented carbide die has been successfully applied in the drawing equipment of aluminum sheath of extra-high voltage cable.
- plasma torch,
- rotating arc,
- annular workpiece,
- diamond coating

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References(9)

References

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