Method for controlling ferrite content to be lower than 4% through austenite stainless steel end socket spinning forming

The invention relates to a method for controlling the ferrite content to be lower than 4% through austenite stainless steel end socket spinning forming. The method comprises the following steps that 1, a drumming mold wrapping a stainless steel plate is used for drumming a blank for many times to form spherical surface on a drumming machine at first; 2, a flanged zone of a spherical-surface plate is uniformly heated until the temperature is higher than a ceiling temperature when austenite is transferred into martensite during austenite stainless steel material plastic processing, but the temperature cannot be higher than a floor temperature of a sensitization range, and the temperature of an S30408 material is 180-300 DEG C; 3, a transition section and a straight section are formed through spinning; and 4, spinning alignment is carried out. The method is simple, low in cost and capable of effectively controlling transferring from austenite into martensite during austenite stainless steel end socket spinning f