Class 2 (2nd Engineer) MEKM 📅 Nov 2022

Exam Question

(a) Briefly describe any one of the manufacturing processes involved in semi built or welded construction of crankshaft of large marine engine

(b) Give a composition or material used

Reference Answer

(a) Manufacturing Process for Semi-Built Crankshaft
In semi-built crankshaft construction, the crank throw (consisting of two webs and a crank pin) is forged as a single unit. The process involves the following steps:
Starting Material :
A billet of steel of a specific measured length is used as the starting material.

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