Process for producing pipes with one or more inner wall thickenings

The invention relates to a process for producing pipes with one or more inner wall thickenings, the thickenings having been produced from a cylindrical pipe by machining processes and/or deforming processes. To achieve in particular a material distribution in the pipe interior which is appropriate f...

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Bibliographische Detailangaben
Hauptverfasser:	KIENHOEFER,KLAUS, JANSSEN,MANFRED,.DR
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL BLASTING DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION HEAT EXCHANGE IN GENERAL HEATING LIGHTING MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MECHANICAL ENGINEERING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to a process for producing pipes with one or more inner wall thickenings, the thickenings having been produced from a cylindrical pipe by machining processes and/or deforming processes. To achieve in particular a material distribution in the pipe interior which is appropriate for the stresses to be withstood and/or which influences the flow, it is proposed that, in a first step, machining processes or deforming processes are used to produce in a pipe of constant wall thickness outwardly or outwardly and inwardly shaped wall thickenings which, in a second step, are inwardly deformed or moulded.