Roll and Method for Manufacturing a Roll for Hot or Cold Rolling of Flat Metal Products

A method for manufacturing a roll for hot or cold rolling of flat metal products, wherein the roll comprises a barrel section, which is coated with a wear-resistant layer, and two journals, oriented coaxially with the barrel section, which are each formed on one end face of the barrel section, the method comprising the following working steps:

• a) providing a main body blank on which
• a barrel section, which has an elongated cylindrical shape and which consists of a main body material, and
• two blank journal sections each of which are formed on one end face of the barrel section and which each have a larger diameter than the barrel section, wherein a material volume of the blank journal sections is at least equal to a volume of the journal of the finished roll associated with the respective end face;
• b) encasing the barrel section with a tubular-formed jacket, wherein the jacket is connected, with its edge regions associated with the blank journal sections, in a sealed manner, to associated end faces of the blank journal sections and a cavity surrounding the barrel section is formed between the jacket and the barrel section;
• c) filling the cavity with an alloy powder;
• d) hot isostatic pressing of the alloy powder to form a wear-resistant layer coating the barrel section which forms a substance-to-substance bond with the barrel section from the alloy powder through compression and sintering;
• e) removing the jacket from the barrel section;
• f) forming the blank journal sections into the journals;
• and
• g) finishing the barrel section and the journals.