Sectional material for battery pack frame and forming process of sectional material

The invention relates to the field of metallurgy, and provides a sectional material for a battery pack frame and a forming process of the sectional material, the section of the sectional material is shaped like a Chinese character'ri ', the section of the sectional material is integrally formed in a rolling mode, the sectional material comprises a body, an end portion and a tail portion, and the end portion and the tail portion are arranged at the two ends of the body respectively. The body, the end part and the tail part form a closed space; the section bar with the section shaped like the Chinese character'ri 'is designed, and under the same strength, the rigidity of the section bar is superior to that of an existing section bar; compared with the prior art, the weight of the battery pack frame made of the ultrahigh-strength steel with the same strength is greatly reduced, and the battery pack frame is light; the structure is complex, the process is difficult, and the process technology of the whole industr