Venkataswamy, MA and Bhaskaran, TA and Keshab, Barai and Sujata, M and Bhaumik, SK (2003) Failure analysis of “O-rings” of reactor effluent air cooler. Project Report. National Aerospace Laboratories, Bangalore.
Full text not available from this repository. (Request a copy)Abstract
Metallic O-rings from indigenous imported sources were sent to the laboratory for a comparative study. Analysis revealed that both the imported and indigenous O-rings are made of 5Cr-0.5Mo steel. However, there were wide variations in microstructures and hardness values in the O-rings from the two sources. While the imported O-rings were normalized and tempered to about 138HV, the indigenous ones were annealed and tempered to about 213 HV. It appears most probable that because of higher hardness, the indigenous O-rings did not deform uniformly during tightening resulting in non-uniform flow of material over the contact surfaces. This has resulted in ineffective sealing leading to leakage.
| Item Type: | Proj.Doc/Technical Report (Project Report) |
|---|---|
| Uncontrolled Keywords: | Metallic O-rings;5Cr-0.5Mo steel;heat treatment |
| Subjects: | CHEMISTRY AND MATERIALS > Chemistry and Materials (General) |
| Division/Department: | Materials Science Division, Materials Science Division, Materials Science Division, Materials Science Division, Materials Science Division |
| Depositing User: | Mrs Manoranjitha M D |
| Date Deposited: | 08 Jul 2011 16:21 |
| Last Modified: | 08 Jul 2011 16:21 |
| URI: | http://nal-ir.nal.res.in/id/eprint/9287 |
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