Sulzer Metco Ag

Oerlikon Metco Ag, Wohlen

Gerard Barbezat

Jean-Luc Dorier

Arno Refke

Christian Bohnheio

Jacobus Cornelis Doesburg

Richard Karl Schmid

Peter Ernst

David Hawley

Christoph Hollenstein

Michael Loch

The invention relates to a thermal spraying material () for the coating of a surface of a workpiece by means of a thermal spraying method, wherein the spraying material () contains zinc. The invention further relates to a thermal spraying method and to a thermally sprayed coating sprayed with the material ().

Thermal spraying material, a thermally sprayed coating, a thermal spraying method and also a thermally coated workpiece

The invention relates to a masking system for masking a cylinder bore () of a combustion engine () during a thermal coating procedure including a masking body () which can be placed during the thermal coating of a first cylinder () of the combustion engine () in the cylinder bore () of a second cylinder () to cover a cylinder wall () of the second cylinder (). In this arrangement the masking body () is designed in such a way that a flow gap () of predeterminable breadth can be set between the masking body () and the cylinder wall () of the second cylinder () for the production of a flow () of a fluid ().

Masking system for the masking of a cylinder bore

The invention relates to a masking system () for the masking of a crank chamber () of an internal combustion engine () during a surface treatment of a cylinder running surface () of a cylinder bore () of a cylinder () of the internal combustion engine (). The masking system () includes a hollow masking body () with a connector segment () for the connection of the hollow masking body () to the cylinder bore () as well as a screen segment (). In accordance with the invention, the hollow masking body () is configured such that the connector segment () of the hollow masking body () can be positioned on the cylinder bore () of the first cylinder () at the crank chamber side during the surface treatment of a first cylinder () of the internal combustion engine (). The invention further relates to the use of a masking system () in accordance with the invention.

Masking system for the masking of a crank chamber of an internal combustion engine

A method of forming a thermally insulating layer system on a metallic substrate surface is disclosed. The method includes: forming a plasma beam; introducing a coating material in the form of a powder having particles in the range between 1 and 50 &#x3bc;m, carried by a delivery gas into the plasma beam, so as to form a powder beam; defocusing the powder beam by using the plasma beam with a sufficiently high specific enthalpy and by maintaining a process pressure between 50 and 2000 Pa for at least partially melting and vaporizing at least 5% by weight of the powder, so as to form a vapor phase cloud; and forming from the vapor phase cloud onto the metallic substrate surface an insulating layer, being a part of the insulating layer system, having an anisotropic columnar microstructure having elongate particles; wherein the anisotropic columnar microstructure is aligned substantially perpendicular to the metallic substrate surface and low-density transition regions with little material delimit the elongate particles relative to one another.

Plasma spraying method

A method of coating a substrate by thermal application of the coating materials using a plasma jet is disclosed. The properties of the plasma jet are determined by controllable process parameters. The coating material and a process gas mixture are injected into the plasma jet where the coating material is partly or completely evaporated depending on the controllable parameters. The phases of the coating material present in vapor and, optionally, condensed form are at least partly deposited on the substrate. A diagnostic measuring method determines the relative proportion of vapor and/or condensed phase for the coating material transported in the plasma jet. The controllable process parameters are set with respect to desired values using such measured data. Regulation of direct manufacture of the coating, particularly a multi-layer coating system, is carried out with respect to these desired values, which correspond to a predetermined vapor or condensed phase proportion.

Method of coating a substrate by a thermal application of the coating material

To improve the machining and processing, respectively, as well as the tribologic properties of ferrous coatings for the working surfaces of combustion engine cylinder blocks applied by a plasma spraying operation, a ferrous coating having a content of bound oxygen in the amount of between 1 to 4% by weight is suggested. Such coatings can be realized, for example, by adding an amount of 200 to 1000 normalized liters air per minute during the plasma spraying operation.

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Winterthur, Switzerland

Gerard Barbezat