|
NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR) >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.12 [2005] >
IJEMS Vol.12(5) [October 2005] >
| Title: | Failure assessment of a driven shaft of an extrusion gear pump |
| Authors: | Barui, K L
Bhattacharya, B |
| Issue Date: | Oct-2005 |
| Publisher: | CSIR |
| IPC Code: | F16C |
| Abstract: | The paper deals with the investigation of failure of a driven
shaft made of BS 970-1991 Series 080 M40 (BS 970-1955 Series En 8) grade steel.
It broke after 1100 h run while pumping out liquid polythene under normal
operating condition. Metallurgical investigation reveals Widmanstatten pattern
and very coarse grains enveloped with ferrite, though the chemical and physical
properties of the material are satisfactory. Presence of such microstructure
due to elevated finishing temperature of the forging process causes brittle
fracture. The suggested remedial measure is to keep the finishing temperature
just above the lower critical temperature. |
| Page(s): | 472-474 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.12(5) [October 2005]
|
|
