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Multiple pulsed-welding method

A technology of pulse welding and welding method, which is applied in welding equipment, arc welding equipment, manufacturing tools, etc., and can solve problems such as droplet shedding at the arc and poor welding quality

Pending Publication Date: 2021-11-12
FRONIUS INTERNATIONAL GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the pulse frequency can only be changed in integer ratios, the pulsed welding process of the subsequent welding process can no longer be carried out with ideal welding parameters
This can lead, for example, to the fact that droplet shedding at the arc of a subsequent pulse welding process no longer functions correctly
This can lead to poor weld quality

Method used

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Embodiment Construction

[0018] The invention will be elucidated below for a double-pulse welding method (ie, with two pulse welding processes) as an example of a multi-pulse welding method. However, it is of course conceivable to extend the embodiments below to multi-pulse welding processes with more than two pulse welding processes. The multi-pulse welding method is characterized in particular by the simultaneous operation of at least two pulse welding processes, thus two pulse welding processes in the case of a double-pulse welding process. Multiple pulse welding processes can all work in the same molten pool, but different pulse welding processes can also work in partially different molten pools.

[0019] exist figure 1 A possible configuration for a two-pulse welding process is schematically shown in , as an example of a multi-pulse welding process with two pulse welding processes that is frequently encountered in practice. Two separate welding devices 1a, 1b are provided, each having a power ...

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Abstract

The aim of the invention is to be able to operate the pulsed welding processes involved in a multiple pulsed-welding method with welding settings that are as ideal as possible. This aim is achieved in that an ideal ratio (Vopt) between the root-mean-square value (RMSopt) of the welding current (ISb) and the welding-wire advancing velocity (VDb) is determined from a known relationship between the pulse frequency (fD b) and the welding-wire advancing velocity (VDb), an actual root-mean-square value (RMSnopt) of the welding current (ISb) is determined by means of the welding current (ISb) with the pulse frequency (fDb) to be set, and at least one pulsed current parameter of the welding current (ISb) of the pulsed welding process and / or the welding-wire advancing velocity (VDb) of the pulsed welding process is changed in order to change the actual ratio (V) to the ideal ratio (Vopt).

Description

technical field [0001] The invention relates to a method for carrying out a multi-pulse welding method, wherein at least two pulse welding processes are operated simultaneously, wherein the at least two pulse welding processes each operate with a welding current with pulse current parameters, with a pulse frequency and with It is carried out in a known manner with a welding wire feed speed linked to a pulse frequency, wherein a first pulse frequency is predetermined for a first pulse welding process and a second pulse frequency to be set in a second pulse welding process is determined by the second pulse frequency. A pulse frequency is obtained. The invention also relates to a system for carrying out the method. Background technique [0002] The present invention relates to pulse welding using a melting electrode with a pulsed arc. In this welding method, a base welding current and a pulsed welding current increased relative thereto alternate regularly at a predetermined p...

Claims

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Application Information

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IPC IPC(8): B23K9/09B23K9/095B23K9/12B23K9/173
CPCB23K9/1735B23K9/124B23K9/0953B23K9/09B23K9/091
Inventor D·索林格
Owner FRONIUS INTERNATIONAL GMBH
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