SU385703A1 - 13 SILO UZY L JAPA ^ -i-TaYJ-rt TG av Cf; tggh ^ - f.-: -, “i Hlt.StTi = 0-i; .A.r: r, i .. PLN; - Google Patents

Description

DEVICE FOR WELDING NON-MELTING ELEC

give birth

one

The present invention relates to the field of electric arc welding with a non-consumable electrode with a filler wire, mainly to devices for welding of non-rotating joints of thick-walled pipes. Such joints are made with deep cutting and are very laborious in operation.

The known device for welding with a non-consumable electrode contains a welding torch, a melting electrode and a filler wire feeding unit mounted on a rotary element around the vertical axis of the torch.

The aim of the invention is to increase productivity by reducing the time of preparatory commissioning operations and the possibility of using the device for welding fixed pipe joints.

This is achieved by the fact that the filler wire feeding unit is mounted on the turning element with the help of a hinge with the possibility of vertical movement and fixation of the unit relative to the welding torch.

FIG. 1 shows the proposed device in operation (side view); in fig. 2 - output device from the joint; in fig. 3 -

180 ° rotation of the filler wire feeder; in fig. 4 - the proposed device in the work when welding in another direction.

A device for welding leprous pipe joints consists of a mechanism / movement in the OK around the pipe being welded and welding head 2. The welding head contains a torch 3 with a non-consumable electrode 4 and a filler wire feeding unit 5 with a mouthpiece 6.

To set up the welding process, the caliper 7 of the wire feed mechanism is used, which contains the lead screw 8 and the nut 9. The screw is turned by the handle Y.

Using a hinge 11, the caliper 7 of the filler wire feeding unit is connected with the screw 12 rotating around the vertical axis of the burner, fixed on the burner 3 by means of a screw 13. The latch 14, mounted on the element, to fix the caliper 7 on it.

The operation of the device is as follows.

The mouthpiece 6 of the filler wire feeding unit 5 is lowered into the joint and, by means of the screw 8 of the caliper 7, the welding process is adjusted and the arc is adjusted, i.e. 13, release the latch M and, turning the caliper 7 relative to the hinge 11, the mouthpiece 6 is withdrawn from the butt joint. Then rotate the feeder unit on the harness wire around the vertical axis of the welding torch 3, rotate the caliper 7 to the lower position, enter: mouthpiece 6 into the butt joint. The latch 14 itself fixes the suplort on the pivot member 12, after which the screw 13 is fastened and welding is performed in the opposite direction.

/ 4/5

/ 2

Subject invention

A device for welding with a non-consumable electrode, mainly non-rotating pipe joints, containing a welding torch with a non-consumable electrode and a filler wire feeding unit, mounted on a rotary element around the vertical axis of the burner,

to increase productivity, the filler wire feed unit is mounted on a rotating element by means of a hinge with the possibility of vertical movement and fixation of the node relative to the welding torch.

Fig 3

ten //

/ J

/ 2