Method for electrohydroblasting of castings

Details Method for electrohydroblasting of castings Method for electrohydroblasting of castings

1982-04-13

1984-12-25

Fisher, Richard V.

Cleaning and liquid contact with solids

Processes

Including application of electrical radiant or wave energy...

134 32, 164131, 164132, B22D 2900

Patent

active

044901801

ABSTRACT:
A method for electrohydroblasting of castings in a liquid medium with a view to removing core and molding sand, according to which castings are subjected to a series of electrohydraulic shocks and at the same time set in reciprocating motion. The reciprocating frequency of the castings and the length of their stroke are sufficient to produce a flow of liquid in the internal channels of the castings and thus remove core and molding sand therefrom. The method is carried out with the aid of an apparatus which comprises a casting-reciprocating mechanism interacting with an electrode-positioning mechanism so that the movement of the castings is synchronized with that of the electrode.

REFERENCES:
patent: 1734176 (1929-11-01), McCabe
patent: 3845806 (1974-11-01), Schekin et al.
patent: 3888694 (1975-06-01), McKinney
patent: 4022266 (1977-05-01), Vershinsky et al.
patent: 4091859 (1978-05-01), Kostyrkin et al.
patent: 4198995 (1980-04-01), Kachkarov et al.
Yutkin et al., "Method for . . . Action on Surface of Materials in Liquid Medium", USSR Author's Certificate No. 121,053, (Appln. No. 605,089/23), published in the Bulletin of Inventions, No. 13, 1959.
Yassievich et al., "Apparatus for Electrohydraulic Blasting of Castings", USSR Inventor's Certificate No. 415, 091, registered Oct. 18, 1973.

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