SURFACE ROUGHNESS OF RAPIDLY SOLIDIFIED RIBBONS | ||||
| The International Conference on Applied Mechanics and Mechanical Engineering | ||||
| Article 44, Volume 2, 2nd Conference on Applied Mechanical Engineering., May 1986, Page 211-223 PDF (2.17 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/amme.1986.57092 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| M. F. Abdel-Ghafar; N. A. El-Mahallawy; M. A. Taha; M. M.F. Koura | ||||
| Design and Production Engineering Department, Faculty of Engineering, Ain-Shams University, Abbasia, EGYPT. | ||||
| Abstract | ||||
| This work aims to study the influence of processing variables in melt spinning - which is one of the rapid solidification processes (RSP) - on the surface roughness of the ribbons produced directly from the melt. The melt spinning is one of the recent manufacturing techniques, in which the final products - ribbons and fibers - could be produced directly by solidification of liquid alloys, thus saving all further conventional metal forming processes usually carried out. In this investigation, a melt spinning apparatus was designed and constructed in order to produce ribbons from the melt using a rotating substrate in the form of wheel. The alloys studied were aluminium alloys with 0, 5.23, 13.46 and 33 wt% Cu. The processing variables used were as follows: substrate linear velocity (v) ranging from 2 to 20 m.s , injection pressure of the melt (P) ranging from 2.9 X 104 to 6.8 X 104 N.m-2, substrate thermal conductivity (K) ranging from 43.3 to 386.6 W.m-I.K-1, melt superheating temperature ( AT) ranging from 0 to 150 K, nozzle - substrate distance (H) ranging from 5 to 20 mm and nozzle diameter (d) ranging from 0.5 to 2 mm. The surface roughness (Rt) has been measured and it was correlated with the different process- ing variables. | ||||
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