Voestalpine Stahl Gmbh

Basf Coatings Gmbh

Bernhard Strauss

Ronald Fluch

Bernhard Jakoby

Martin Peruzzi

Herbert Enser

Johannes Sell

Wolfgang Hilber

Carola Eyssell

Roman Tiefenthaller

Franz Dorninger

Michaela Schatzl-Linder

Andreas Muhr

Reinhold Stotz

Franz Androsch

Christian Walch

Lothar Jandel

Alexandra Huber

Carola Eyßell

Dorothe Koberg

A process for producing a coated electrical steel strip includes application of a pretreatment layer over a first flat side of a rolled electrical steel strip. The layer thickness of the pretreatment layer is in the range from 10 nm to 100 nm, in particular from 20 nm to 50 nm. The rolled electrical steel strip which has been coated with the pretreatment layer is then coated with an insulating lacquer layer over the pretreatment layer. The insulating lacquer layer is applied by roll application using a roll and no deliberate drying and/or crosslinking of the pretreatment layer is carried out after application of the pretreatment layer and before coating with the insulating lacquer layer.

Method for producing lacquer-coated electrical strips, and lacquer-coated electrical strip

A coil coating method for multilayer coating of a continuous metal strip, which is disposed in the strip passage, in which on a flat side of the metal strip, a curable polymer primer is applied by means of a roller application and cured in order to form an electrically insulating primer layer and a curable polymer varnish is applied onto said primer layer by means of roller application and cured in order to form an electrically insulating varnish layer, wherein at least one at least electrically conductive conductor track is printed on at least some areas between the primer layer and the varnish layer is proposed. In order to increase the reproducibility of the coil coating method, it is proposed that the conductor track be printed on some areas of the pre-cured primer layer and that the conductor track and varnish be applied using a wet-on-wet process.

Coil coating process

The invention relates to a method for connecting sheet metal parts () to form a laminated core (), wherein sheet metal parts () are separated, in particular punched, from a sheet metal strip () that has, at least in some areas, a layer having curable polymer adhesive (), and the sheet metal parts () are preliminarily connected to form a laminated core (), the preliminary connection comprising plasticizing the adhesive () at least in some areas and joining the sheet metal parts () in order to connect the sheet metal parts by means of the plasticized adhesive () of at least one of the sheet metal parts (), and in a subsequent step the laminated core () having preliminarily connected sheet metal parts () is subjected to a curing of the adhesive (). In order to create an advantageous connection between the sheet metal parts, the plasticizing of the adhesive () comprises the introduction of a softener (), in particular HO.

Method and device for connecting sheet metal parts to form a laminated core

The invention relates to a method for producing a semi-finished product or component (), in which a hardenable coating () with fiber-reinforced plastic is applied to a metal carrier (), particularly a metal sheet (), and the coated metal carrier () is formed, particularly deep-drawn or bent, in a subsequent step to produce a semi-finished product or component (). According to the invention, for an improved and cost-effective method, the metal carrier () is coated at most only in certain regions and is only subjected to the forming when the coating thereof () has hardened to produce at least a block-resistant surface (), the coated metal carrier () being formed such that the plastic changes in shape follow forming radii () and are produced substantially, preferably exclusively, in the coating-free regions () of the metal carrier.

Method for producing a semi-finished product or component comprising a metal carrier and a hardenable coating with fiber-reinforced plastic

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Leonding, Austria

Bernhard Strauss