Method and die for forging pump shell of main pump by using hollow steel ingot

The invention provides a method and a die for forging a pump shell of a main pump by using a hollow steel ingot, and particularly relates to the technical field of forging. The forging method comprises the steps of forging the surface of the outer wall of one end of a second barrel into a conical surface; die-forming the second barrel, extruding the shape of one end of the second barrel and the shape of the periphery of the second barrel into the first set shape, and extruding the interior of the other end of the second barrel into a first cavity, and extruding the outer wall of the second barrel into a first protrusion with the appearance being the second set, and obtaining the first main pump shell. Compared with the prior art, the forging method and the die have the advantages that thematerial utilization rate is greatly improved, and more importantly, the problem that the forging quality is influenced due to internal shrinkage cavities and serious component segregation of steel ingots caused by narrow sol