Elastic internal expansion tube expander

The invention discloses an elastic internal expansion tube expander, which comprises a core shaft, wherein the core shaft is a cylinder with a step; the core shaft is provided with an oil inlet, and the oil inlet is communicated with a radial oil outlet; the external circle of the core shaft is matc...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	WEI ANJIA, SHEN GANRONG, YANG WEIFANG, FU RUNIAN, XU ZHIRU, SHEN YANG, SHEN BAIFANG, GU SUMIN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL TRANSPORTING WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	The invention discloses an elastic internal expansion tube expander, which comprises a core shaft, wherein the core shaft is a cylinder with a step; the core shaft is provided with an oil inlet, and the oil inlet is communicated with a radial oil outlet; the external circle of the core shaft is matched with a sealing ring; the sealing ring is provided with an oil cavity; the oil cavity is communicated with the oil outlet; and the external circle of the sealing ring is matched with an expansion ring. The tube expander has good sealing effect, is convenient to operate, and is widely applied in the expanded connection process.