Tubular case with flange and method of manufacturing the same

Abstract

There is provided a tubular case with a flange, comprising a tube head which is connected backward to a tube body. A flange extending outward is arranged at the connection between the tube head and the tube body, and a penetrated through hole is arranged inside the tube head and the tube body. The manufacturing method of the tubular case comprise of placing a blank material into the mold cavity for forming a tubular case; pressurizing and cold forging the blank material, which causes the blank material to fill the entire mold cavity to form the tubular case with a tube head, a flange, and a tube body from top to bottom, with a space being arranged inside the tube head and the tube body; and ultimately, punching a hole inside the tubular case to form a through hole penetrating through the space inside the tube head and the tube body.

Dependencies are inferred from the claim text.