Abstract: A method of manufacturing a planetary gear carrier includes a sintering step of forming a front carrier cap by sintering, an ion-nitrided layer forming step of forming an ion-nitrided layer on a surface of the sintered front carrier cap, a welding portion machining step of machining a surface of a welding portion of the front carrier cap by a thickness of the formed ion-nitrided influence layer, and a welding step of welding a welding portion of the front carrier cap connected to a component with a different type of material different from a material of the front carrier cap so that the welding portion is joined to the component with the different type of material.

Abstract: An insert for a bed plate according to an embodiment of the present disclosure is coupled to a lower portion of an engine block. The insert of the bed plate includes a crankshaft seating portion disposed at a center and where a crankshaft is mounted. The insert of the bed plate also includes a ladder frame fixing portions that are disposed at opposite ends of the insert to facilitate coupling to a ladder frame. The insert of the bed plate also includes a plurality of protrusion portions that are formed on both surfaces of the insert and contact the ladder frame.

Abstract: An insert for a bed plate according to an embodiment of the present disclosure is coupled to a lower portion of an engine block. The insert of the bed plate includes a crankshaft seating portion disposed at a center and where a crankshaft is mounted. The insert of the bed plate also includes a ladder frame fixing portions that are disposed at opposite ends of the insert to facilitate coupling to a ladder frame. The insert of the bed plate also includes a plurality of protrusion portions that are formed on both surfaces of the insert and contact the ladder frame.