DOOR INNER PANEL AS AUTOMOBILE PARTS AND METHOD OF MANUFACTURING SAME

摘要

A door inner panel as automobile parts is manufactured from a tailor welded blank formed from a different thickness steel sheet by means of different thickness connection for connecting different kind steel sheets having different sheet thicknesses. In the tailor welded blank, a weld line of the tailor welded blank includes linear weld line portions and an R-shaped weld line portion through which the linear weld lines are connected.