Question

11.5 (A) (SI units) True centrifugal casting is performed hor- izontally to make copper tube sections. The tubes have a length-1.0 m, diame 0.25 m. and wall thickness- 15 mm. (a) If the rotational speed of the pipe 700 rev min, determine the G-factor on the molten metal. (b) Is the rotational speed sufficient to avoid "rain"? (c) What volume of molten metal must be poured into the mold to make the casting if solidification shrinkage and solid thermal contrac- tion for copper are-4.5% and 7.5%, respectively (both are volumetric contractions)?

Answer 1

q.163m)s. V2 mp.mxo.25 x7 ō 0 n 6 0 Rq (q.163) 68 S4 Ge b)factor is sufricien+ for casnPeeHon and coolinq is 2. 2.