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Rao, Champuri Srinivas
- Design of Special Fixture for Hard Chromium Plating on Internal Surface of Hollow Cylinder Open at One End and with Restricted Opening at the Other End with L/D Ratio More than 4
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Affiliations
1 Total Prod. Maintenance (TPM) Dept., Central Manufacturing Technology Institute (CMTI), Bengaluru, IN
1 Total Prod. Maintenance (TPM) Dept., Central Manufacturing Technology Institute (CMTI), Bengaluru, IN
Source
Manufacturing Technology Today, Vol 18, No SP 3 (2019), Pagination: 4-9Abstract
Hard chrome plating is widely used for various applications requiring wear and corrosion resistance. The quality of plating is influenced by applied current, relative position of anode & work piece, bath solution composition & concentration, temperature. The present work is focused on design & development of fixtures for holding anode with a view to produce uniform coating on internal surface of work piece made out of 17-4-PH steel. The plating was carried out with and without concentric position of anode. The quality of coating in respect of uniformity was assessed by measuring coating thickness. The results show that the uniformity in coating is achieved by the use of fixture for concentric position of anode.
References
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- Mechanical and Structural Characterization of DLC Prepared by PECVD Technique
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Authors
Affiliations
1 Central Manufacturing Technology Institute, Tumkur Road, Bngaluru, IN
2 Karunya University, Coimbatore, Tamil Nadu, IN
1 Central Manufacturing Technology Institute, Tumkur Road, Bngaluru, IN
2 Karunya University, Coimbatore, Tamil Nadu, IN
Source
Manufacturing Technology Today, Vol 18, No SP 3 (2019), Pagination: 39-41Abstract
Diamondlike carbon (DLC) films have been explored extensively in the past due to their highly attractive properties. However, the high level of internal stress developed during growth, calls for stress relieving process where structural and mechanical properties changes takes place. In the present study, the DLC is deposited on Si substrate using PECVD process and mechanical & structural changes during the post heat treatment process of DLC are investigated by using nanoindentation and Raman spectroscopy. Increase in hardness value confirmed the conversion of sp2 to sp3 structure while heat treatment.References
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