SU246246A1 - PATENT- ^ "PHNICHESKAYA '" LIBRARY - Google Patents

Description

The invention relates to the field of electrolytic processing of pipes.

A device for electrolytic polishing of the outer surface of pipes is known, comprising a chamber, on the side walls of which there are holes for the passage of pipes, provided with sealing cuffs, and annular cathodes placed inside the chamber.

The proposed device differs from the known one in that the chamber is made in the form of a drum, the axis of rotation of which is parallel to the axis of rotation of the pipes being machined.

This allows for increased productivity.

FIG. 1 shows the described device, a cross-section; in fig. 2 - the same, side view.

The device consists of a chamber / in the form of a drum, the axis of rotation of which is parallel to the axis of rotation of the pipes being machined. Pa side walls 2 and. 3 chambers are arranged for holes 4 for the passage of pipes, provided with sealing sleeves 5. The annular cathodes are fixed inside the chamber 1 coaxially with the hole 4 for the passage of pipes. Through the drum axle 7, an electric current is supplied to the ring cathodes 6 through the electrical power supply 8, and the electrolyte is supplied through the axle 9. The rotation of the drum is carried out by means of a worm

transmission 10, mounted on the frame of the device. The chamber / enclosed in the housing 11, having a fitting for connection to the ventilation and a fitting 12 for the overflow of electrolyte. When the worm gear 10 rotates, the drum rotates to align the axis of the annular cathode 6 and the holes 4 to pass the pipes with the axis of the pipe supply, and then the pipe is inserted into the chamber, to which the sealing cups 5 are pressed, sealing the part of the chamber filled with electrolyte.

Through the hollow pin 9, an electrolyte is supplied, the excess of which is poured through the overflow window 13 and flows into the circulating

system through nozzle 12. Thereafter, the supply of electric current to the working ring cathode 6 and the longitudinal movement of the pipe, which is also under voltage, is turned on. Due to the galvanic effect, the surface roughness of the pipe is smoothed.

Subject invention

A device for electrolytic polishing of the outer surface of pipes, comprising a chamber, on the side walls of which there are holes for the passage of pipes, provided with sealing cuffs, and ring 3 cathodes, located inside the chamber, characterized in that, in order to increase productivity, the chamber is drum-shaped. whose axis of rotation is parallel to the axis of rotation of the pipes being machined.

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