SU68055A1 - Device for electric arc welding of annular seams of pipelines - Google Patents

Description

The Ilpejjaraeiioe device is intended for the production of high-quality electric arc welding of pipes without the participation of qualified welders, as well as without the use of special welding and welding machines.

For this purpose, the device is performed by Tai ;. that it welds the ring); the welds are by a recumbent electrode, one end of which is inserted into the pipe being machined, and the other is fixed in the clamp, on the stand) ia stand. To immobilize the electrode as it is melted, at e etc there is a cable that prits one end of the cable to the pipe and the other to the specified clamp and winds the pipe its irradiation rod.

In such a device, for the carpet, the places of the horn 11 DU1CH1 on the circumference of the seam, a relay can be applied, made in the form of a ferromagnetic contact plate controlling the contacts. The ferro-magnetic zone is located along the edge1 of the flux-Boii box, forming a electr of the electr H) magnet, which is excited by the passage of electrodes on the electrode with welded nausea. The intensity iol of this magitite varies depending on the place of arc burning inside the flux box.

The foregoing summary is illustrated in FIG. 1 p.2 of which shows the proposed device in two projections, on phpg. 3 - a section along the flux box (flask) and on the fng. 4 - tsintstsgialalna); onset of the relay.

The end of the electrode 8 is laid into the joint of the seam connecting two pipes 1-1 and coated with plaster or granulated flux. The length of this type of electrode is equal to the circumference of the welded T1 pipe. The other electrode is fixed in the clamp on the floor 7, the moving frame 5, which at one end rests on the 1 q pipe connected to the wire insulated from the stand by forks 4, and the other end is mounted on the rack 6. The carriage 7 is connected to the pipe. 1 by cable 9, which is fastened to the pipe mechanically or temporarily, by means of an arc.

On Staini 5, from it, a stand 10 is attached, carrying on itself a roller of a guide cable which holds a holder 13 on the axis, to which a hinged box 12, 14 is attached, which serves to hold the granulated flux, n Relay C Korom 11. The walls of 12 onoki, parallel to electrode 9, are manufactured. There are lenses of mild starch. The transverse walls of 14 flasks are made of non-metallic metal. Role 11 works to turn on the T-eye off into coitrol (green and red) Lamia 15. Iod-liner 2 is inserted into the opening of the iodine joint of the pipes to be welded in the form of spring-loaded 1; ole. KOToiwe is composed of KpacHoii. disc 3 by means of prulas of ilustine. Welding current is supplied to pipe 1 and frame 5.

The device operates as follows:

The strut 6 and the ovorivable tube of the joint with your fork 4 are attached to the base of the tube. In the clamp ka-, retkp 7 (electrode 8 is inserted, the other end of which is placed in the butt joint, at the highest point of the pipe circumference. Flip. 12, 14 and put into grains (1WHL AND, upon excitation of a volt arc with an oscillator or carbon rod, start rotate the pipe. When the pipe rotates, the coiled cable is wound not by a cable 9. The iodine bends to the pipe, the carriage 7 and the electrode 8. which move with the speed of the rotary pipe. The rotation speed of the pipe must be equal to the melting speed of the electrode 8 and adjusted so that the volt arc at all times Welding was at the top of the circumferential pipe.

Manually controlling the speed of rotation of pipes located by the flux-enclosed arc of the Circumference is carried out by means of ipeae 11, 12 and lamochek 15, / which are based on changing the magnetic magnetic field generated by the current of the current, depending on the Tits and currents of current in the electrode section enclosed within the oni. When the arc passes from BeipxiHeif, a point on the circle — increasing the length of the electrode — the measles 11 relay of the MRTGT is turned on and turns on a light signaling the need to reduce the speed of rotation of the pipe. When the arc is burned to the left of the top point — at the Gensheng electrode length — the spore is released and turns on the lamp, indicating) 1; the need to increase speed in: heaven; yeni pipe. The lack of a & chenn, both lamps indicates a normal welding process. When the pipe is rotated by the engine, the relay 11, 12 turns it on by rotation and last.

This device allows the PM to exhaust welding and the bare electrodes |. For this purpose, a support 16 is installed near the entrance slot of o-ioka 12, which supports the electric power of 8 at a distance of 1-2 MM from the pipe's new version.

PREDOMOTE AND 3 ABOUT

1.YcTpoiicTBO for electric arc) 1 welding of columned) willows of pipelines with a recumbent electrode supported by one tube on the pipe to be welded, and another clamped in the clamp based on the stoic melting the primoien cable attached at one end to the pipe, and the other to the pointer zazchil5 (u and imatatyvae on the pipe ırts it B1) of the brush.

2. The device of Clause 1, characterized in that in order to control the place of the arc burn on the circumference of Gaba, a relay, made in the form of a ferromagnetic pin, controlling the contacts of the flux box located above the edges of the electromagnet, is formed The reason for this is that the electrode is welding current, the intensity of which is | NC, which is gay in the background from the place where the arc burned inside the flux box Klf.

FIG. 2

FIG. four.

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