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Method for automatically adjusting arc length of slope characteristic type pulse consumable electrode gas shielded welding

A technology of pulse melting electrode and gas shielded welding, which is applied in welding equipment, arc welding equipment, manufacturing tools, etc.

Inactive Publication Date: 2009-12-30
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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Problems solved by technology

[0007] (1) Reasonable solution to the problem of automatic adjustment of arc length and arc voltage when the current waveform is controlled by constant current for gas metal shielded welding;

Method used

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  • Method for automatically adjusting arc length of slope characteristic type pulse consumable electrode gas shielded welding
  • Method for automatically adjusting arc length of slope characteristic type pulse consumable electrode gas shielded welding
  • Method for automatically adjusting arc length of slope characteristic type pulse consumable electrode gas shielded welding

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Embodiment Construction

[0018] A method for automatically adjusting the arc length of the oblique characteristic pulse MIGA welding arc length, which mainly adopts the oblique characteristic pulse MIGA welding arc length automatic adjustment model to establish the oblique characteristic pulse MIGA welding power supply control system, adopts the pulse The slope design algorithm of the external characteristic of the metal gas shielded welding power source is used to quantitatively adjust the arc length and automatically adjust the intensity.

[0019] Depend on figure 1 It shows that the arc length automatic adjustment system of the present invention is based on pulse CO 2 Welding peak current time t p As the control volume, pulse CO 2 The slope characteristic relationship between the average current and voltage of welding is used as the criterion, and t is controlled by arc voltage closed-loop feedback p , so that the system can get a stable arc voltage operating point.

[0020] Depend on figure ...

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Abstract

The invention relates to a method for automatically adjusting voltage of electric arc of slope characteristic type pulse consumable electrode gas shielded welding, which mainly quantitatively adjusts the automatic adjustment intensity of the arc length and builds a slope characteristic type welding power supply control system through an arc length automatic adjusting model by an external characteristic slope algorithm of a welding power supply. The method takes the external characteristic slope as a criterion, takes the peak current time as a control quantity, and makes the voltage of the electric arc and the arc length automatically adjusted to a stable working point in the pulse consumable electrode gas shielded welding process. The method has the advantages of simpleness, effectiveness, adaptive parameter adjusting function and strong adaptability, and can be used for MIG welding, MAG welding and CO2 gas shielded welding.

Description

technical field [0001] The invention relates to a method for automatically adjusting the arc length of an inverter power supply for pulse melting electrode gas shielded welding, especially a slope characteristic formula that uses the slope of the external characteristic of the pulse melting electrode gas shielded welding inverter power supply as a criterion and takes the peak current time as a control quantity A method for automatic control of the arc length of a pulsed MIG welding power source. Background technique [0002] The droplet transfer in the MIGA welding process is a dynamic process, and the arc length and arc voltage are also dynamic variables. Only with a stable average arc voltage, it is impossible and unnecessary to accurately control the arc voltage waveform, but it is necessary and possible. The current waveform is controlled so that it is basically consistent in each droplet short-circuit transition period, so that the entire welding process is stable. [...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/173B23K9/10
Inventor 蒋力培邹勇
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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