Typical hollow forgings-electro-slag remelting (ESR)alloy steel roll sleeve with inner diameter 560～880 mm

outer diameter 670~1200 mm and length 1300～1780 mm is usually produced by ≥2 t ingots. Based on the ensuring product quality

as compared with traditional forging process

it is available to decrease by 2 procedures and once re- heating with using optimized process- direct forging upsetting. The forgings yield increased by 5%～15% to obviously de- crease production cost.