SU1174208A1 - Torch for gas-shielded arc welding - Google Patents

Abstract

TORCH FOR ARC SVAZHI gas shielded by suction gazopshevvdeleny from the welding zone, comprising the burner head with a nozzle for supplying shielding gas and a suction nozzle and positioned at an angle to the head of the handle in which is mounted gas-jet unit suction and otsasshayuschy channel, wherein that, in order to increase labor productivity by reducing the degree of molten metal sticking to the internal burner nodes, it is equipped with an opsid inertia trap hinged on the burner handle at the junction of the head with the handle, and the cavity of the trap is connected to the cavity of the suction channel.

Description

one

The invention relates to devices used in manual, semi-automatic, automatic welding of metals, and can be applied in various areas of the people who use electrical. arc welding of metals.

The purpose of the invention is to increase labor productivity by reducing the degree of adhesion of molten metal splashes to the internal components of the burner.

FIG. 1 shows a burner, a cut; in fig. 2 shows section A-A in FIG. one.

The burner contains a handle 1, into which a gas-jet suction unit 2 is mounted, as well as a head 3 with a nozzle for supplying a protective gas and a suction nozzle 4. Nozzle 3 is located inside nozzle 4. Inside nozzle 3 there is a mouthpiece 5. Handle 1 is angled to burner head. The burner is equipped with a folding inertial trap containing a reflector 6 and a bunker 7. The catcher is hinged on the handle 1 of the burner at the junction of the head with the handle 1, The burner has a suction channel 8. The inner surface of the trap can be covered with a layer of refractory material 9.

The burner works as follows.

As a result of the vacuum created by the gas-jet unit 2, the gases formed as a result of the welding process are sucked into the burner through the nozzle 7. In nozzle 4, gases and molten metal particles move along current lines, shown is 082

In FIG. 1 solid lines. When changing the direction of gas flow,. due to the change in the angle of inclination of the suction channel 8, the handle 1, the trajectory of the molten metal particles (dashed lines) under the action of inertial forces are curved less than the gas flow lines, as a result of which the particles. deposited on the inner surface of the trap

ki 7.

The reflected particles of a metal under the action of aerodynamic forces are brought into the space formed by the lower part of the trap 7 and the reflector 6, which prevent them

return to the gas stream. Reflected particles, like the splashes of molten metal deposited on the inner surface of the trap 7, are easily removed from the opened trap by periodic cleaning and replacement of the refractory coating 9. The gases thus purified are discharged to the local suction exhaust ventilation system.

To facilitate the cleaning of the reflector 6 vnut-.

Part of it is replaced by a replaceable layer of mica or sheet parenite, which are replaced with new ones when cleaning the reflector.

As shown by production tests, the duration of continuous operation of a known burner without the necessary disassembling and cleaning is only 0.5 hours, while the proposed 5-6 work shifts with periodic cleaning only open reflector and unloading of the bunker.

Claims (1)

Arc welding torch in protective gases with a suction gas emission from the welding zone, containing a burner head with a nozzle for supplying a protective gas and a suction nozzle and a handle located at an angle to the head, into which a gas-jet suction unit is mounted, and this also includes a suction channel that, in order to increase labor productivity by reducing the degree of sticking of molten metal splashes on the internal nodes of the burner, it is equipped with a folding inertial trap, _ pivotally mounted on the handle of the burner compound in place of the head to the handle, and the trap chamber is connected with the cavity of the suction channel.