METHOD AND DEVICE FOR PRODUCING BIMETALLIC PIPES

The invention relates to a method for producing bimetallic pipes, consisting of a thin-walled inner pipe made of a high-alloyed or alloyed steel, and an outer pipe made of a non-alloyed or unalloyed steel, which, after being inserted one into the other, are form-fittingly interconnected by expansion...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	KOCKS, Hans-Jürgen, WINKELS, Jörn
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PIPES PUNCHING METAL SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The invention relates to a method for producing bimetallic pipes, consisting of a thin-walled inner pipe made of a high-alloyed or alloyed steel, and an outer pipe made of a non-alloyed or unalloyed steel, which, after being inserted one into the other, are form-fittingly interconnected by expansion under internal pressure, as well as to a device for carrying out said method, comprising sealing heads (3) that can be placed against the pipes (1; 2) to be expanded, for the purpose of supplying the pressure medium. The device is characterised in that a retainer (5) comprising a radially inward-projecting projection (7) is provided on said sealing head (3) for the purpose of securing the inner pipe (1, 1') being expanded, and this can be brought to engage with a peripheral groove (6) on the inner pipe (1; 1').