Sandvik Intellectual Property Ab

Sandvik Materials Technology Deutschland Gmbh

Erika Hedblom

Thomas Froböse

Christofer Hedvall

Udo Rauffmann

Leandro Finzetto

Jonas Gynnerstedt

Daniel Edmarker

Jonas Rosèn

Jonas Gynersted

The present disclosure relates to a tube structure comprising an inner tube of metal and an outer tube of metal, wherein the inner tube extends in the outer tube, and wherein either the inner tube and the outer tube are mechanically tight fitted over the entire length of the inner tube, at least one space in a radial direction of the tube structure in the form of a groove extends at least in an outer surface of the inner tube or in an inner surface of the outer tube, and the at least one space extends in a longitudinal direction of the inner tube and over an entire longitudinal extension of the inner tube, or a spacer tube is located between the inner tube and the outer tube, the inner tube, the outer tube and the spacer tube are mechanically tight fitted over the entire length of the spacer tube, the spacer tube comprises at least one space in the form a slit extending in a radial direction of the tube structure from an outer surface of the inner tube to an inner surface of the outer tube, the at least one space extends in a longitudinal direction of the spacer tube and over an entire longitudinal extension of the spacer tube, and wherein the at least one space is at least partially filled with a thermal interface material providing a thermal contact between the outer tube and the inner tube.

Tube structure and a method for manufacturing a tube structure

A tube structure () comprising an inner tube () of metal and an outer tube () of metal, wherein the inner tube () extends in the outer tube (), wherein a spacer tube () is located between the inner tube () and the outer tube (), wherein the spacer tube () comprises at least one slit (), wherein the at least one slit () extends in a longitudinal direction of the spacer tube () and over an entire longitudinal extension of the spacer tube (), and wherein the at least one slit () forms a space in a radial direction of the tube structure () extending from an outer surface () of the inner tube () to an inner surface () of the outer tube (), wherein the tube structure () further comprises at least one signal line () located in the at least one slit () of the spacer tube (), wherein the at least one signal line () extends in the longitudinal direction of the spacer tube ().

Tube structure with a protected sensor and method for manufacturing a tube structure with a protected sensor

Method for manufacturing a tube of metal in which sensors are attached to tubes, which register and signal a damage of the tube. It is detrimental that protection of the sensors at these tubes against environmental influences is complex. In contrast, it is an object of the present disclosure to provide a method for manufacturing a tube, in which the signal line can be protectively mounted. To solve this object, a method for manufacturing a tube of metal is suggested with an outer tube and an inner tube, wherein a groove is drawn in an inner surface of the outer tube or in an outer surface of the inner tube and subsequently the inner tube and the outer tube are drawn together through a drawing die, wherein the inner dimension of the outer tube is reduced such that after the drawing the outer tube is force-fitted onto the inner tube.

Method for manufacturing a tube of metal as well as a tube of metal

Growing community of inventors

Valbo, Sweden

Erika Hedblom