The invention relates to a side wall inner plate of an automobile. The side wall inner plate of the automobile comprises a side wall inner plate body, wherein the side wall inner plate body is of an annular structure, a column B body is arranged on one side of the annular structure and a column A body is arranged on the upper side of the annular structure. The side wall inner plate of the automobile is characterized in that a first reinforcing plate is arranged in an intersected area of the column A body and the column B body, and a second reinforcing plate is arranged above a windscreen installation hole in the column A body; the upper part of the column B body is a hard area, the lower part of the column B body is a soft area, and the hard area and the soft area are connected through a first transition area; the main body part of the side wall inner plate body is obtained through an ultrahigh-strength steel hot forming process, and is in a martensitic structure with strength of 1300-1500MPa; the area of the side wall inner plate body below the soft area of the column B body is a soft area, the soft area and the main body part of the side wall inner plate body are connected through a second transition area, and the second transition area is belt-shaped. The side wall inner plate of the automobile has the advantages that the strength of the column B is good, the deformation is controllable and the strength of the intersected area of the column A and the column B is guaranteed.
Side wall inner plate of automobile
2015-04-01
Patent
Electronic Resource
English
Automobile side wall outer plate forming process method and automobile side wall outer plate
European Patent Office | 2023
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