FIELD: technological processes.
SUBSTANCE: matrix is made in the form of a force element made of reinforced concrete hardening under pressure, the working surface of which is made in the form of an insert. Compensation gasket is installed between the insert and the inner matrix surface. Between the working surface of the power element and the workpiece in a vacuum cavity, encapsulating sealing gaskets are mounted. The blasting chamber has a hydraulic chamber disposed between the matrix and the housing to create pressure necessary for concrete hardening.
EFFECT: increased reliability of the blasting chamber.
2 cl, 6 dwg
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