Abstract: A thermopulse apparatus for deburring parts has a hollow body (1) housing a working chamber (2) in such a manner as to define a space (7) between the outer walls (6) thereof and inner walls (4) of the body (1) for liquid (8) partly filling the space. The chamber (2) has spark plugs (9), an inlet valve (20), an exhaust valve (12) mounted in the bottom part of the chamber (2) along the longitudinal axis (16) thereof under the layer of liquid (8), and a covermember (13) for accommodation of the parts (14) being treated, the convermember being reciprocatable within the chamber (2). Ports (23 and 32) respectively are provided in the side walls (22) of the valve (12) and in the covermember (13) on the side of the valve (12).

Abstract: An apparatus has a cylindrical working chamber (2) with a bottom member (7) provided with admission and discharge valves (3,5) and a spark plug (4). The bottom member (7) is made as a hollow cylinder having end plates and openings (8), the height and outside diameter of which are approximately equal to the height and inside diameter of the working chamber (2). Sealing rings (11, 12) are interposed between the chamber (2) and the hollow cylinder.