| 摘要 |
FIELD: machine engineering, possibly removing from metallic surfaces burrs remained after working. SUBSTANCE: apparatus includes working chamber having upper stationary portion 2 with lower end T in the form of outer flange and lower movable portion 1 in the form of annular land with lower end in the form inner flange resting upon bottom 4 having ducts 5 for draining combustion products out of working chamber to atmosphere through tract 10, cavity of valve 11 with doubled plunger and layer of aqueous alkali solution. EFFECT: enhanced efficiency, increased factor of using energy applied to apparatus, protection of environment against outbursts of carbon dioxide. 3 cl, 1 dwg
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