Lubricating die forging method for forging ultra-large or complex forge piece through press

The invention relates to the technical field of die forging, in particular to a lubricating die forging method for forging ultra-large or complex forgings through a press. The lubricating die forging method for forging the ultra-large or complex forge piece through the press comprises the following steps that a graphite stock solution and water are fully mixed, and a lubricating agent is obtained; a lubricant is introduced into a spraying machine, the spraying machine is started, a spraying gun is started, and the spraying range and the atomization state of the spraying gun are checked; preparing a die which is matched with a die forging press for die forging, and controlling the temperature of the die to be 250-450 DEG C; 2-4 minutes before die forging, a lubricant is uniformly sprayed on the surface of a die cavity of the die by using the inspected spray gun to form a lubricating layer, and a lubricated die is obtained; a die forging press and a lubricating die are used, and ultra-large or complex forgings