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Thermochemische Behandlungen verbessern die Ermüdungslebensdauer von Futterrohrbohrungen
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ISBN10: 620804748X
ISBN13: 9786208047481
Publisher: Verlag Unser Wissen
Published: Sep 3 2024
Pages: 64
Weight: 0.23
Height: 0.15 Width: 6.00 Depth: 9.00
Language: German
ISBN13: 9786208047481
Publisher: Verlag Unser Wissen
Published: Sep 3 2024
Pages: 64
Weight: 0.23
Height: 0.15 Width: 6.00 Depth: 9.00
Language: German
Das Bohren mit Futterrohr gehört zu den zehn vielversprechendsten Technologien zur Senkung der Kosten beim Bau von Bohrlöchern. Sie besteht darin, das Futterrohr direkt als Bohrstrang zu verwenden. Eine solche Technik verkürzt nicht nur die Auslösezeit, sondern verringert auch das Risiko von Problemen im Bohrloch und bietet eine sicherere Arbeitsumgebung, was zu einer Senkung der Gesamtkosten für den Bau von Bohrlöchern um 30 % führt. Eine Zwischenlösung war die Verwendung von Metall-auf-Metall-Dichtgewinden, mit denen man mit einigem Erfolg bis zu 3.000 m tief bohren kann. Die Leistungen dieser Verbindungen mit thermochemischen Oberflächenbehandlungen wurden mit einer zweckmä igen Werkbank untersucht, und es wurden vielversprechende Ergebnisse wie eine 32%ige Erhöhung der zulässigen Ermüdungsbelastung sowie eine Erhöhung der Elastizitätsgrenze der Gewinde um 50% festgestellt. Eine vollständige Bruchanalyse wurde mit Hilfe der Rasterelektronenmikroskopie (SEM) durchgeführt.
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