Date Received: 04-04-2015 / Date Accepted: 12-07-2016
The shaft of stone sawing machine in working process often occurs faulty. Common form of fault is the wornnessover limited dimension at the center shaft. One of the methods that brings high efficiency andmeeting in time for manufacturing might berestoration of theshaft using build- up welding methodtoachieve the desired dimension. Based on theoreticalresearch onwelding technology, shielded metal arc welding for building- up weldwas selected. This is one of the methods that can be easily usedwith availableequipments. Equipmentselection, welding condition, manufacturing process, manufacturingcondition, andqualityevaluation were done to ensuregood operation after machine assemblage. Different equipmentswere used to test the shaft forroughnessandhardnessand the shaft quality was checked by operation trials. Fivesamples wereselected forrestoration and quality evaluation. Relying on all evaluating methods, all shafts have good quality.
