Provided are a plated steel sheet and a method for manufacturing same, the plated steel sheet comprising: a base steel sheet; a Zn—Mg—Al based steel sheet plating layer provided on at least one surface of the base steel sheet; and an Fe—Al based inhibition layer provided between the base steel sheet and the Zn—Mg—Al based plating layer, wherein the plating layer comprises, in wt %: 4% or more of Mg; 2.1 times or more of Mg content and 14.2% or less of Al; 0.2% or less (including 0%) of Si; 0.1% or less (including 0%) of Sn; the remainder Zn; and unavoidable impurities.

A method for treating a surface of a fibre composite component, wherein an abrasive removal of the surface of the fibre composite component takes place by blasting a removing agent transported by a gaseous transporting fluid onto the surface of the fibre composite component by a feed nozzle and a suction extraction of the removing agent and material removed by the removing agent takes place by an extraction nozzle arranged in the region of the feed nozzle.

A method for treating a surface of a fibre composite component, wherein an abrasive removal of the surface of the fibre composite component takes place by blasting a removing agent transported by a gaseous transporting fluid onto the surface of the fibre composite component by a feed nozzle and a suction extraction of the removing agent and material removed by the removing agent takes place by an extraction nozzle arranged in the region of the feed nozzle.

A method for compacting an anticorrosion coating includes projecting water soluble particles.

An abrasive for jet cutting including particles of a stainless steel is provided, the stainless steel includes a microstructure, the microstructure including at least martensite, in a range of ≥20 wt. % to ≤100 wt. %, austenite in a range of ≥0 wt % to ≤50 wt %, and chromium carbide, chromium nitride and/or mixtures thereof, together in a range of ≥0 wt % to ≤45 wt % based on the microstructure, the proportions being selected such that together they amount to ≤100 wt % based on the microstructure. The abrasives for jet cutting exhibit particularly good lifetime and recyclability. Also provided is a suspension for jet cutting including at least the proposed abrasive for jet cutting and a suspending agent, as well as the use of the abrasive for jet cutting for cutting a workpiece.

An abrasive for jet cutting including particles of a stainless steel is provided, the stainless steel includes a microstructure, the microstructure including at least martensite, in a range of ≥20 wt. % to ≤100 wt. %, austenite in a range of ≥0 wt % to ≤50 wt %, and chromium carbide, chromium nitride and/or mixtures thereof, together in a range of ≥0 wt % to ≤45 wt % based on the microstructure, the proportions being selected such that together they amount to ≤100 wt % based on the microstructure. The abrasives for jet cutting exhibit particularly good lifetime and recyclability. Also provided is a suspension for jet cutting including at least the proposed abrasive for jet cutting and a suspending agent, as well as the use of the abrasive for jet cutting for cutting a workpiece.

The invention relates to a method and a device for strengthening the surface of workpieces, in particular of metal ones, by mechanical effects accompanying the impact of small projectiles or by mechanical effects accompanied by the impact of a shockwave induced by plasma created by electric evaporation of a metal foil. The device comprises a polymer strip with a metal foil on the surface of the side diverted from the surface of the workpiece in which foil bridges are formed to form projectiles, further comprising two electrodes and adjacent to the metal foil located on the polymer strip, wherein bridges are formed between the contact surface areas of the metal foil, and the electrodes and between which the plasma is formed, are mounted in a support body, through which flat conductors and are connected to a switch for switching large currents and high voltages with a high-voltage source. The polymer strip with the metal foil tightly abuts the support body with the electrodes and the electrodes and protrude above the upper surface of the support body to provide electric contact with the contact surface areas of the applied metal foil. The method of strengthening the surface of workpieces by means of the device according to the invention consists in that one cycle of strengthening the surface of workpieces involves the action of an electric current pulse supplied from a high voltage source after closing the switch by conductors to electrodes between which a high voltage is applied, thereby shorting the circuit on the metal foil at the location of the bridges to form a plasma expanding and by a compressive force acting on the polymer strip part of which hits as a projectile the surface of the workpiece. The plasma is generated by the electric current pulse, in addition to the expansion pressure, is also accelerated by the electromagnetic Lorentz force caused by the passage of electric current, through this plasma in the generated magnetic field.

The invention relates to a method and a device for strengthening the surface of workpieces, in particular of metal ones, by mechanical effects accompanying the impact of small projectiles or by mechanical effects accompanied by the impact of a shockwave induced by plasma created by electric evaporation of a metal foil. The device comprises a polymer strip with a metal foil on the surface of the side diverted from the surface of the workpiece in which foil bridges are formed to form projectiles, further comprising two electrodes and adjacent to the metal foil located on the polymer strip, wherein bridges are formed between the contact surface areas of the metal foil, and the electrodes and between which the plasma is formed, are mounted in a support body, through which flat conductors and are connected to a switch for switching large currents and high voltages with a high-voltage source. The polymer strip with the metal foil tightly abuts the support body with the electrodes and the electrodes and protrude above the upper surface of the support body to provide electric contact with the contact surface areas of the applied metal foil. The method of strengthening the surface of workpieces by means of the device according to the invention consists in that one cycle of strengthening the surface of workpieces involves the action of an electric current pulse supplied from a high voltage source after closing the switch by conductors to electrodes between which a high voltage is applied, thereby shorting the circuit on the metal foil at the location of the bridges to form a plasma expanding and by a compressive force acting on the polymer strip part of which hits as a projectile the surface of the workpiece. The plasma is generated by the electric current pulse, in addition to the expansion pressure, is also accelerated by the electromagnetic Lorentz force caused by the passage of electric current, through this plasma in the generated magnetic field.

A device for removing foreign matter from a roll surface. The device includes a blast processing unit and a press unit. The blast processing unit includes an ejection unit configured to eject a projectile material at a surface of a roll that conveys a steel strip inside a heating furnace, and a recovery unit configured to recover the projectile material. The press unit is configured to press the blast processing unit toward the surface of the roll.

Blends of abrasive media are described that can be propelled via a pressurized air stream into a surface to remove contaminants or other undesired material from the surface. In addition to other advantageous properties, the disclosed abrasive media blends are capable of providing faster abrasion than conventional composite abrasives, but with significantly less dust than raw abrasives generate. The disclosed abrasive media blends include sponge abrasive media formed of a flexible, open-cell polymeric material bonded to one or more abrasive materials.