公开(公告)号：US20180305795A1

公开(公告)日：2018-10-25

申请号：US15765203

申请日：2015-11-25

Applicant: Otto Fuchs Kommanditgesellschaft

Inventor： Joachim Becker ,  Peter Kaufmann ,  Reinhart Domke ,  Thomas Witulski

IPC: C22C21/16 ,  C22F1/057 ,  B21C23/00 ,  B21C23/08 ,  B21C37/16 ,  F16L9/00

CPC classification number: C22C21/16 ,  B21C23/002 ,  B21C23/085 ,  B21C37/16 ,  C22F1/057 ,  E21B17/00 ,  F16L9/006

Abstract: A tube for use in conjunction with a deep drilled hole comprises a light metal tube made of an aluminium alloy, having sections of different wall thicknesses arranged in the longitudinal direction of the tube and a respective coupling at each end for connecting the tube to a further tube, wherein the light metal tube is produced from an aluminum alloy containing the following elements: 2.5-5.0 wt. % Cu, 0.2-1.0 wt. % Mg, 0.8-2.0 wt. % Li, max. 0.15 wt. % Si, max. 0.15 wt. % Fe, max. 0.5 wt. % Mn, max. 1.0 wt. % Zn, max. 0.1 wt. % Ti, max. 0.5 wt. % Ag, the remainder being Al and unavoidable impurities. Also described is a method for producing a light metal tube for a tube of this type configured for example as a bore tube. Said method comprises the steps of forming the light metal tube by means of an extrusion method and subsequent solution annealing, then drawing out the extruded tube over the entire length thereof, until the section or sections having the smallest wall thickness are drawn out by at least 2 to 2.5%, and the drawn light metal tube is artificially aged in a subsequent process step at a temperature of between 164° C. and 180° C.

公开(公告)号：US11970756B2

公开(公告)日：2024-04-30

申请号：US17052385

申请日：2018-07-02

Applicant: OTTO FUCHS—KOMMANDITGESELLSCHAFT

Inventor： Joachim Becker ,  Matthias Hilpert ,  Thomas Witulski ,  Michael Besel

IPC: C22C21/10 ,  C22F1/053

CPC classification number: C22C21/10 ,  C22F1/053

Abstract: The invention relates to an aluminum alloy having 0.04-0.1 wgt.-% Si, 0.8-1.8 wgt.-% Cu, 1.5-2.3 wgt.-% Mg, 0.15-0.6 wgt.-% Ag, 7.05-9.2 wgt.-% Zn, 0.08-0.14 wgt.-% Zr, 0.02-0.08 wgt.-% Ti, max. 0.35 wgt.-% Mn, max. 0.1 wgt.-% Fe, max. 0.06 wgt.-% Cr, optional 0.0015-0.008 wgt.-% Be, the remainder aluminum in addition to unavoidable impurities. The invention furthermore relates to an aluminum alloy product which is overaged according to T74xx, produced from such an alloy.