NOZZLE FOR WET ABRASIVE BLASTING AND BLASTING DEVICE INCLUDING THE SAME

PROBLEM TO BE SOLVED: To provide a nozzle and a blasting device capable of stably injecting abrasive grains without deposition in the nozzle even if an abrasive grain size is made large or a slurry concentration is made high during blasting performed by injecting the slurry where the abrasive grains are dispersed toward an article to be worked together with high-pressure gas.SOLUTION: A nozzle includes a nozzle holder, a gas nozzle, and an injection nozzle. The gas nozzle is formed into a hollow shape where the flow path of the high-pressure gas is formed from a high-pressure gas introduction part toward a high-pressure gas injection port. The gas nozzle includes: toward the high-pressure gas spray port, a cylindrical straight part; a gas nozzle compression part which continuously shrinks toward a shrinking end; and a gas nozzle acceleration part which continuously expands from the shrinking end. Moreover, the gas nozzle is movably inserted into the nozzle holder.