2results about "Non-mechanical blast generators" patented technology

This invention discloses a magnetic shot blaster, relating to the field of metal surface treatment technology. It includes a housing, bearings, end caps, roller plates, a power roller, a pulley, a drive motor, and a controller. Bearings and end caps are installed at both ends of the housing. Roller plates are fixed to the inner rings of both bearings and are positioned opposite each other. The power roller is placed inside the housing, and connecting shafts are fixed to both ends of the power roller. The two connecting shafts are fixed within the two roller plates. One end of one connecting shaft extends out of the housing and is fixed to a pulley. The pulley is rotatably connected to the drive motor via a belt. A through hole is coaxially formed between the power roller and the connecting shaft. The magnetic attraction mechanism is electrically connected to the power supply and the controller. The advantages of this invention are: the controller allows for range control of the magnetic force on the surface of the power roller, facilitating adjustment of the flow rate of steel shot during adsorption; adjusting the angle of the guide plate with bolts controls the shot blasting angle range, reducing wear and increasing service life.

The present invention relates to a method and apparatus for strengthening the surface of a workpiece, particularly a metal workpiece, by the mechanical effect accompanying the impact of a small projectile or by the mechanical effect accompanying the impact of a shock wave caused by plasma generated by electrolytic deposition of a metal foil, the apparatus comprising a polymer strip (32) having a metal foil (71) on a surface facing away from the surface of the workpiece (10) on which a foil bridge (34) is formed to form a projectile (100), and further comprising two electrodes (33) and (66) adjacent to the metal foil (71) located on the polymer strip (32), the bridge (34) being formed between the contact surface areas (27) of the metal foil (71), the electrodes (33) and (66) between which the plasma is formed being attached to a support (41), through which the flat conductors (44) and (46) are connected to a switch (84) for switching a high current and high voltage with a high voltage source (83), the polymer strip (32) having the metal foil (71) being connected to the electrodes (33) and The electrodes (33, 66) together with the polymer strip (32) are firmly abutted against the support (41), and protrude above the upper surface of the support (41) to provide electrical contact with the contact surface area (27) of the attached metal foil (71). The method for strengthening the surface of a workpiece (10) using the device according to the invention consists in the fact that one cycle for strengthening the surface of the workpiece (10) comprises the action of a current pulse supplied by the conductors (44, 46) from a high voltage source (83) after closing a switch (84) to the electrodes (33, 66) between which a high voltage is applied, thereby short-circuiting the metal foil (71) at the location of the bridge (34), forming an expanding plasma which acts by a compressive force on the polymer strip (32), parts of which impact the surface of the workpiece (10) as projectiles (100), and the plasma generated by the current pulse is accelerated not only by the expansion pressure but also by the electromagnetic Lorentz force (20) caused by the passage of the current through this plasma in the generated magnetic field.