A centrifugal compressor for high pressure (10) with improved efficiency, of the type comprising a rotor (12), an inner case (14), diffusers (16) and diaphragms (18), wherein the surfaces which are subjected to passage of the flow of gas have been subjected to burnishing working.
https://app.acclaimip.com/pdf/716xZW7dQhKgXrEAi91CHst6Vxz-skCJ5Ubr6O4/US6974304B2
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