Hilti Aktiengesellschaft

Thyssenkrupp Steel Europe Ag

Jens Kondratiuk

Manfred Meurer

Wilhelm Warnecke

Patrick Kuhn

Daniel Hummel

Stefan Seemeyer

Ralf Meixner

Marc Blumenau

Roland Foser

Pierre Pallmer

Martin Norden

Thiemo Wuttke

Mareike Frensemeier

Balasubramaniam Vengudusamy

Arturo Guevara Arriola

Tanja Steinberg

Phillipp Lorenz

Manfred Schallert

Michael Bischof

Werner Schuler

Werner Schüler

Patrik Kuhn

Phillip Lorenz

Tanja Meindorfer

A sealing geometry for a mobile power tool is provided wherein the mobile power tool has a drive unit, wherein the sealing geometry is designed to seal off an interior (IB), containing a lubricant, of the drive unit from an exterior (AB) outside the drive unit. The sealing geometry has a seal that is contactless at least during operation of the drive unit.

Sealing geometry for a mobile power tool

A fastening element is provided, in particular an expansion anchor, having a bolt and a retainer arranged on the bolt for introducing tensile forces into the bolt, the bolt having a first metal friction surface and the retaining element having a second metal friction surface, which is associated with the first friction surface. A coating in which particles, preferably hard particles, are embedded is arranged on at least one of the two friction surfaces.

Fastening element with particle coating

A mobile power tool having a drive unit that has an aqueous lubricant and/or the drive unit is designed for operation with the aqueous lubricant, wherein the aqueous lubricant comprises at least 5 percent water.

Mobile power tool having an aqueous lubricant, and use of the mobile power tool

A mobile power tool comprising a drive unit is disclosed. The drive unit has an aqueous lubricant and/or the drive unit is set up for operation with the aqueous lubricant, wherein, before the start of a running-in phase of the drive unit, a bond roughness sigma of two interacting contact surfaces of the drive unit is greater than 0.01 μm, preferably at least 0.1 μm.

Mobile power tool and method

A drilling device includes a drill basic body and a conveying helix which runs helically around the drill basic body. The conveying helix is subdivided into a plurality of conveying helix segments that are disposed next to one another. The conveying helix segments may be disposed loosely next to one another.

Drilling device

An expansion dowel is provided, which includes at least one dowel body and a bolt, the bolt including an expansion body, which forces the dowel body radially to the outside when the expansion body is displaced in an extraction direction relative to the dowel body, a corrosion protection layer and an antifriction layer covering the corrosion protection layer being provided on the expansion body. It is also provided that the corrosion protection layer is a Zn/Ni coating or a Zn/Fe coating. A manufacturing method for an expansion dowel of this type is also provided.

Expansion dowel having a zinc alloy coating

A production method for a tool socket includes forming a hollow spindle An elongated recess is provided in the wall. The spindle includes unalloyed or low-alloyed steel grades. An insert includes a high-alloyed tool steel. The insert has a pedestal that is complementary to the recess and it also has a rib. The insert is placed into the hollow spindle in such a way that the pedestal rests in the recess and the rib projects into the interior of the spindle. The pedestal is soldered into the recess at a temperature that is above the Ac3 temperatures of the steel grades employed. The combined structure is cooled and then undergoes a heat treatment in an atmosphere containing sufficient carbon to carburize the hollow spindle but not sufficient to carburize the insert. The heat treatment of the combined structure is carried out at a temperature between 800&#xb0; C. and 950&#xb0; C. The combined structure is cooled down in a salt bath or liquid bath subsequent to the heat treatment.

Production method for a tool socket

A steel component having a steel substrate containing 0.3-3 wt.-% manganese, and an anti-corrosion coating applied to the steel substrate including a coating layer having at least 70 mass-% &#x3b1;-Fe(Zn,Ni) mixed crystal, the remainder being intermetallic compounds of Zn, Ni and Fe, and which has at its free surface a Mn-containing layer in which the Mn is present in metallic or oxidic form.

Steel component provided with a metallic coating giving protection against corrosion

A method by which a steel component can be produced, which is provided with a metallic coating which adheres well and which provides protection against corrosion, from a flat steel product produced from a steel material containing 0.3-3 wt.-% manganese and having a yield point of 150-1100 MPa and a tensile strength of 300-1200 MPa coated with an anti-corrosion coating which comprises a coating of ZnNi alloy which is electrolytically deposited on the flat steel product, which coating is composed in a single phase of &#x3b3;-ZnNi phase and which contains, as well as zinc and unavoidable impurities, 7-15 wt.-% nickel.

Method of producing a steel component provided with a metallic coating giving protection against corrosion

A readily formable flat steel product has a ductile edge layer that is from 10 to 200 &#x3bc;m thick and has a ductility greater than a ductility of an inner core layer of the flat steel product. The readily formable flat steel product is produced by annealing a flat steel product having a C content of from 0.1 to 0.4% by weight in a continuous furnace. The annealing is carried out under an annealing atmosphere that contains from 0.1 to 25% by vol. of Hand HO, with the balance being Nand technically unavoidable impurities. A dew point is between &#x2212;20&#xb0; C. and +60&#xb0; C., and a ratio of HO/His a maximum of 0.957. In the course of the annealing, the flat steel product is heated to a holding temperature of from 600 to 1100&#xb0; C. and for a holding time of from 10 to 360 seconds.

Method for producing a flat steel product which can be readily formed, flat steel product and method for producing a component from such a flat steel product

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Buchs, Switzerland

Jens Kondratiuk