The present invention relates to a method for manufacturing a bushing for the front end mold die plate with a building-up process and the manufacturing bushings, and more particularly to blanking (blanking), piercing (piercing), notching (notching), slotting (slotting), wonjajaebi of trimming (trimming), the parting (parting), such as processing a punch (punch) and a die plate (die plate) die hole (die hole) fit bushing (bushing), which is installed in the die plate at the front mold formed by the with minimizing the processing costs and improve the workability Sikkim and at the same time the punch is on the method of manufacturing a bushing for the front end mold die plate with a building-up process which to the most extend the die life in accordance with the strokes that work punched into die cavity and the produced bushing will be.; The present invention therefor is a method of manufacturing a bushing for the front end die of the die plate using a building-up process, as described above, and the welding step of the welding special welding rod to melt a special electrode to the base material on the base material plane by electric welding, and growing welding step of by welding to melt a special electrode to the base material welded until a predetermined thickness on the formed laminate surface, weld metal development step of growing welding a special electrode to the base material to form a weld metal having a predetermined thickness, such as the and, by the development weld metal processing machine it characterized by made of an step of processing the necessary bushings.
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