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AssigneeWinkler & Dunnebier
InventorMichael Closmann
Estimating the term…
A method for producing a cutting or embossing roller having a cutting knife or embossing projection that projects out of the surface of a base body of the roller ensures the greatest possible optimal homogeneity of the cutting knife or the embossing projection, while minimizing production duration and costs. Single-layer or multi-layer application of the cutting knife or the embossing projection onto the roller base body occurs by laser resurfacing welding. Each layer is produced using an additional powdered material, which is melted in a melt bath at the weld point. The heat and/or light radiation emitted by the melt bath is detected, at least during application of each layer. Laser power is controlled or regulated as a function of the heat and/or light radiation emitted by the melt bath, so that melt bath temperature remains essentially constant during application of each layer.
A method for producing a cutting or embossing roller having a cutting knife or embossing projection that projects out of a surface of a base body of the roller comprising the following steps:
A cutting or embossing roller having a cutting knife or embossing projection that projects out of a surface of a base body of the roller for cutting or embossing moving webs or individual cutouts, said roller being produced by applying by laser resurfacing welding at least one layer of the cutting knife or the embossing projection onto the base body of the roller, each layer of the at least one layer being produced using an added material in powder form melted in a melt bath at a weld point, detecting heat or light radiation emitted by the melt bath at least during application of each layer, and controlling or regulating power of a laser used in the laser resurfacing welding as a function of the heat or light radiation emitted by the melt bath so that melt bath temperature remains substantially constant during application of each layer.
A device for producing by laser resurfacing welding a cutting or embossing roller having a cutting knife or embossing projection that projects out of a surface of a base body of the roller comprising
A powder composition that contains less than or equal to 90 wt.-% Fe and, in addition, one or more alloy components selected from the group consisting of B, Si, W, V, Cr, C, Co, Mn, Mg, Ti, zirconium oxide and aluminum oxide, for producing by laser resurfacing welding a cutting knife or embossing projection of a cutting or embossing roller projecting out of a surface of a base body of the roller.
A powder composition that contains less than or equal to 70 wt.-% Co and, in addition, one or more alloy components selected from the group consisting of B, Si, W, V, Cr, C, Co, Mn, Mg, Ti, zirconium oxide and aluminum oxide, for producing by laser resurfacing welding a cutting knife or embossing projection of a cutting or embossing roller projecting out of a surface of a base body of the roller.
A powder composition that contains less than or equal to 70 wt.-% Ni and, in addition, one or more alloy components selected from the group consisting of B, Si, K—W, V, Cr, C, Co, Mn, Mg, Ti, zirconium oxide and aluminum oxide, for producing by laser resurfacing welding a cutting knife or embossing projection of a cutting or embossing roller projecting out of a surface of a base body of the roller.
Dependencies are inferred from the claim text.