Steel-plastic composite control arm

The utility model relates to the field of automobile parts. The utility model relates to a control arm, in particular to a steel-plastic composite control arm. The metal plate comprises a stamped metal plate body and an injection molding part which is integrally formed with the body through injection molding and used for weight reduction. Wherein the first shaft sleeve, the second shaft sleeve, the third shaft sleeve and the center plastic hole are welded to the three ends and the center point of the metal plate body respectively. A plurality of groups of reinforcing ribs which are connected with one another are arranged on the injection molding part; the traditional welding is replaced by the research and development of the control arm which is integrally formed by steel and plastic; deformation caused by overall welding is reduced; compared with traditional sheet metal stamping and welding, on the premise that the strength is guaranteed, a great weight reduction effect is achieved, it is predicted that the