Turbocompressor rotor and method for producing the same

Abstract

A turbocompressor rotor for a turbocompressor for compressing process gas has a rotor body which makes contact with the process gas and which is produced entirely from a stainless steel material including 0.3 to 1.2% carbon and 12 to 19% chromium, wherein the steel material includes the alloy X39CrMo17-1.9. A process for producing such a turbocompressor rotor by casting includes manufacturing a casting model corresponding to the geometry of the rotor body by rapid technology and producing a casting mold using the casting model, or manufacturing a casting mold corresponding to the negative geometry of the rotor body by rapid technology, introducing the liquid steel material into the casting mold to form a cast workpiece as the rotor body, and finishing the turbocompressor rotor with the rotor body.

1 .- 5 . (canceled) 
     
     
         6 . A turbocompressor rotor for a turbocompressor for compressing process gas, having a rotor body which makes contact with the process gas and which is produced entirely from a stainless steel material comprising 0.3 to 1.2% carbon and 12 to 19% chromium, wherein the steel material comprises the alloy X39CrMo17-1. 
     
     
         7 . The turbocompressor rotor as claimed in  claim 6 , wherein the steel material comprises up to 2.5% molybdenum. 
     
     
         8 . The turbocompressor rotor as claimed in  claim 7 , wherein the steel material comprises up to 1.5% vanadium. 
     
     
         9 . A process for producing a turbocompressor rotor as claimed in  claim 6  by casting, comprising:
 manufacturing a casting model corresponding to the geometry of the rotor body by rapid technology and producing a casting mold using the casting model; or manufacturing a casting mold corresponding to the negative geometry of the rotor body by rapid technology; 
 introducing the liquid steel material into the casting mold to form a cast workpiece as the rotor body; 
 finishing the turbocompressor rotor with the rotor body. 
 
     
     
         10 . The process as claimed in  claim 9 , wherein the rapid technology is a rapid prototyping process.