Translation of "Abschmelzleistung" in English

Such devices guarantee that the same deposition efficiency is produced in every case.

In accordance with the distance, the melt-off performance and therewith the throughput can be varied.

With Cold Weld you reduce your welding times due to the high deposition rate.

With Tandem Weld you reduce your welding times due to the high deposition rate.

This demand leads to the development of high-performance welding processes with increased deposition rate.

The melting rate with a single-wire torch is about 5 kg of wire per hour.

With these welding parameters, a melting rate of 8.3 kg/h is achieved.

Remarkable features of this welding process are a high deposition rate and a favourable heat balance.

This results in a high deposition rate, a high welding speed and thus a low heat input.

The wire gets hotter and the deposition rate increases considerably.

The increased deposition rate can either be used for more filling volume or higher welding speed.

The increased deposition rate of the Cold Weld process results in enormous welding speeds in the case of thin plates.

During the negatively poled phase, the weld process achieves a higher deposition rate and better gap bridgeability.

Here, the economy of laser welding is applied to thick plates with the high melting power of the MAG process.

Thanks to the high arc pressure and optimal deposition rate, welding can be performed in a downward direction and more quickly.

The Peerless Lake project used the Single Tandem variant, with a deposition rate of 35 kg/h.

Here too, a higher deposition rate is obtained during the negatively poled CMT phase, and with lower thermal input.

They have higher deposition efficiency than solid wire, which in turn speeds welding tasks.

This makes it possible to join superhigh-strength steels with a sufficiently high deposition rate yet with low thermal input.

SUMMARY OF THE INVENTION The invention has the object of creating a device for arc welding, of the type initially mentioned, in which the deposition efficiency of the welding wire is constant.

The additional regulation of the deposition efficiency via the feed rate of the welding wire leads to a displacement of the working point while keeping the arc voltage constant.

With simultaneous arc welding with two or more fusible electrodes, the deposition efficiency is guaranteed to be identical at all three electrodes because of the fact that the feed rate is regulated.

Investigations with the device according to the invention have shown that the changes in wire feed rate effected via the first regulator for keeping the arc length constant do not cause any significant changes in deposition efficiency particularly at low welding rate.

The melt-off output and the current supply of the power supply device 20 is changed and controlled by the control unit to such an extent that between 400 to 1200 globules per second are melted off the consumable electrode 9, which preferably have a diameter which corresponds at least to the size of diameter of the consumable electrode 9.

Via a further regulator (37), the deposition efficiency is regulated by supplying the regulator (37) with the feed rate as actual value and changing the welding-current intensity as a function of this value.

To avoid these disadvantages, efforts to exploit the advantages of submerged-arc welding, also for welding aluminum have become known, these advantages, such as high melting rate, deeper penetration, suitability for site use deriving from insensitivity to wind effect and minimal environmental pollution deriving from the absence of light, radiation, noise, smoke and gas emission, being known from the welding of steel.

The limit range within which the feed rate can fluctuate without the characteristic of the current source having to be changed for the purpose of keeping the deposition efficiency constant can be determined by simple tests for the respective welding task.