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A method and apparatus for controlling a shot peening operation includes the measurement of pressures at two different points in a compound gas shot peening system. By comparing these pressure levels with the pressures set forth in a table for a given mass rate of flow of shot, the peening operator

A method and apparatus for controlling a shot peening operation includes the measurement of pressures at two different points in a compound gas shot peening system. By comparing these pressure levels with the pressures set forth in a table for a given mass rate of flow of shot, the peening operator can control the velocity of the shot particles applied to the workpiece, thereby controlling peening intensity.

대표청구항 ▼

Shot peening method comprising the steps of providing a transport hose with a nozzle attached at an end thereof; conveying shot into said nozzle other than through said transport hose at a predetermined mass flow rate, supplying gas under pressure to said hose through an inlet opening for accelerati

Shot peening method comprising the steps of providing a transport hose with a nozzle attached at an end thereof; conveying shot into said nozzle other than through said transport hose at a predetermined mass flow rate, supplying gas under pressure to said hose through an inlet opening for accelerating said shot in said nozzle, discharging said shot from said nozzle directed at a workpiece being treated, determining from a look-up table the pressure levels in said hose at a first measuring point at said nozzle and at a second measuring point upstream from said first measuring point required to establish a desired shot velocity at said predetermined shot mass flow rate, controlling the pressure of said gas supplied to said hose to establish said pressure levels at said first and second measuring points representing said desired shot velocity of shot being conveyed through said hose, monitoring the pressure levels at said first and second measuring points during treatment of the workpiece, and discontinuing treatment of said workpiece when a change of either of said pressure levels indicates a velocity of the particles being transported through said hose that is other than the desired velocity.