Building of Heavy Machinery

The purpose of this paper is to draw attention to the changing pattern and scope of fabrication in building of heavy machinery. This is necessary in view of the requirement and demand and ever increasing size of heavy machinery with more rigorous and stringent service conditions. So far we are mostly acquainted with either fully cast or fully fabricated bodies for various heavy machineries. But both types of components do not satisfy fully all requirements like dynamic and fatigue stresses due to cyclic or shock load ; abrasion, erosion and corrosion problems : severe wear and tear as normally encountered in heavy machineries for cement, paper, sugar, chemical, material handling, thermal plants and equipments.