Cold treatment method for stainless steel forgings

Abstract

The invention discloses a cold treatment method of a stainless steel forge piece, which comprises the following steps of: forging stainless steel at the temperature of 1040 DEG C for forming, the deformation is 50%, and the finish forging temperature is more than or equal to 850 DEG C; after forging, the stainless steel forge piece is placed in a heating furnace and cooled along with the furnace; the stainless steel forge piece is heated to 927 DEG C, heat preservation is conducted for 360 min, and water cooling is conducted to reach the room temperature; taking out and putting into an ice chamber, transferring for less than or equal to 120 seconds, keeping the temperature of the ice chamber at-50 DEG C, and keeping for 180 minutes; and heating to 540 DEG C again, preserving heat for 240 minutes, and cooling in air. The method can completely convert the stainless steel forge piece into a martensitic structure and improve the performance of the forge piece. The method is used for cold treatment of stainless steel forgings.