| abstract |
ThenThe invention relates to a hard metallic profile rolling tool, in particularna rolling beam, a rolling rod or a round rolling tool, for the cold-formingnProduction of threads, profiles and gears in profile rolling machines.nTo the tension distortion when hardeningnto avoid, consists of the main bodyn(4) and the profile toothing (7) made of two different materials,nbeing the predominant onenPart of the bodyn(4) of a first metallic material having a hardness ofnHRC 30-50 and the splines (7) in a hard metallicnLayer (9) is incorporated, consisting of a second hard metallicnMaterial with a hardnessnfrom HRC 55 to HRC 65, with the hard metal layern(9) has a layer thickness of at least 2 mm and with the firstnMaterial by weldingnconnected is. The hard metallic profile rolling tool enables thenReduction of production costs fornthe grinding. About thatnaddition, the independence ofnthe existing spectrum of semi-finished products offered on the market in high-strengthnTool steel reached. |