Abstract

"Plant (5) for treating a long moving metal product (3) having a surface covered with a layer of oxides, comprising a stripping assembly (7) consisting of a group (11, 11a, 11b) of lasers (13) arranged around the long product (3), a control unit (9) for receiving information related to the long product (3), the control unit (9) being configured to determine the operating parameters to be applied to the stripping assembly (7) for stripping the layer of oxides, for removing the metal layer of a predetermined thickness and for receiving a predetermined roughness at the surface of the long product (3), by comparing with experimental results pre-recorded in the control unit (9), and applying said operating parameters to said stripping assembly (7)."

IPC Classes  ?

• B21B 45/04 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling
• B21C 43/02 - Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass combined with or specially adapted for use in connection with drawing or winding machines or apparatus
• B21C 43/04 - Devices for de-scaling wire or like flexible work
• B23K 26/36 - Removing material

Abstract

The present invention is directed mainly towards a process for the surface treatment of metal substrates, comprising the steps of: (i) providing a metal substrate comprising surface hydroxyl groups, (ii) bringing the metal substrate into contact with a solution of at least one organophosphorus compound so as to allow the reaction of said surface hydroxyl groups of the metal substrate with said organophosphorus compound in order to form a monomolecular layer on the surface and a second layer of at least predominantly crystalline physisorbed organophosphorus molecules, the treated substrate obtained being coated with organophosphorus compound in monomolecular form and in at least predominantly crystalline physisorbed form. It is also moreover directed towards a treated metal substrate that can be obtained by means of this process, the corresponding solution and the use thereof for the treatment of metal substrates for the purpose of improving the tribological properties thereof during the shaping thereof, in particular by stamping.

IPC Classes  ?

• C23C 22/06 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH < 6
• C10M 173/02 - Lubricating compositions containing more than 10% water not containing mineral or fatty oils
• C23F 11/167 - Phosphorus-containing compounds
• C23C 22/03 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using non-aqueous solutions containing phosphorus compounds