Characteristic of cobalt chromium by Nd:Yag laser sintering process

Kamarudin, Khairu and Wahab, Md Saidin and Ramli, M. H. (2015) Characteristic of cobalt chromium by Nd:Yag laser sintering process. In: 9th International Conference on Advanced Computational Engineering and Experimenting (ACEX 2015), 29 June - 2 July 2015, Munich, Germany.

Full text not available from this repository.

Abstract

This work reports on the results of an experimental study examining the potential of the selective laser sintering process to produce a layer of specimen by using cobalt chromium molybdenum powder. A 300W Nd: YAG laser machine was used in this laser sintering experiment in order to fabricate the cobalt chromium molybdenum specimen. The effect of the laser parameters such as laser power, scan speed, scan spacing, and pulse rate was investigated in this research, in which, the research started by evaluating sintered samples on a single track and continued with multiple tracks which creating a single layer sintered sample. The evaluation of specimen characteristics focused on surface morphology, relative density and dimensional accuracy. There were a set of power range and pulse rate applied in the single track test which were 30W to 75W laser power and 100Hz, 150Hz, 200Hz, 250Hz of pulse rate. While a set of laser parameter range applied in the single layer test were 55W, 65W, 75W of laser power, 1mm/s, 3mm/s, 5mm/s of scan speed and 0.5mm, 0.6mm, 0.7mm of scan spacing. The result of the laser sintering experiment showed that laser power was inversely proportional to the porosity of the specimen, but directly proportional to the area percentage error of the specimen. While, the scan speed parameter was directly proportional to the porosity of the specimen, but inversely proportional to the area percentage error of the specimen. The purpose of the research was to find successful laser parameter conditions and created a process map for laser sintering of cobalt chromium molybdenum powder material

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:selective laser sintering; rapid prototyping; cobalt chromium molybdenum; Nd: YAG
Subjects:T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Divisions:Faculty of Mechanical and Manufacturing Engineering > Department of Manufacturing and Industrial Engineering
ID Code:6980
Deposited By:Mrs. Nurhayati Ali
Deposited On:12 Aug 2015 12:28
Last Modified:12 Aug 2015 12:28

Repository Staff Only: item control page