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Double constant currents of intelligent inversion soldering machine and self-optimizing control method

A technology of inverter welding machine and control method, which is applied in the direction of manufacturing tools, welding equipment, arc welding equipment, etc., can solve the problems of inflexible parameter adjustment and control, inconvenience for welders, and unfavorable welding performance, so as to improve the dynamic performance of power supply , adjustment and control flexible, easy to operate and understand the effect

Inactive Publication Date: 2004-10-27
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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AI Technical Summary

Problems solved by technology

These companies are all completed with hardware, and the control circuit is complex, which not only affects the reliability of the system, makes parameter adjustment and control extremely inflexible, but more importantly, its parameters cannot be adaptively optimized and adjusted according to changes in the welding process
On the one hand, it is not convenient for the welder to operate, and on the other hand, it is not conducive to the further improvement of welding performance, so the dynamic characteristics of the welding power supply cannot be improved to the greatest extent.

Method used

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  • Double constant currents of intelligent inversion soldering machine and self-optimizing control method
  • Double constant currents of intelligent inversion soldering machine and self-optimizing control method
  • Double constant currents of intelligent inversion soldering machine and self-optimizing control method

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Embodiment Construction

[0027] see figure 1 , figure 2 , the working process of the smart inverter welding machine is:

[0028] When the welding current is less than 180A-200A, the three constant current control methods of short circuit, arc peak value and base value are adopted. At the beginning, add a certain base value current that matches the wire feeding speed, so that a spherical droplet 1.2 times the diameter of the welding wire is maintained at the end of the welding wire and the diameter of the droplet is controlled to prevent the arc from being unstable if the droplet diameter is too small. Splash occurs. When the droplet just touches the molten pool, the welding current is lowered to a very low level within 0.8ms to reduce the energy of the short-circuit bridge. After the bridge is formed, the current is controlled to rise to a larger current value to make the bridge Necking under a greater pressure (electromagnetic contraction force, gravity, etc.). Necking makes the current flow are...

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Abstract

A dual constant current and self-optimizing control method for intelligent inverter welder features that the external characteristics at different stages can be automatically determined according to welding current setting and electric arc state and the dual or multiple constant current is used according to electric arc state for realizing the self-optimized intelligent control to automatically and quickly make the response to arc variation and welding current setting. Its advantages are good shape of welded seam and less splash.

Description

technical field [0001] The invention relates to an intelligent self-optimizing control method for an inverter welding machine, especially refers to the ability to self-optimize the fuzzy control current waveform during the welding process, and automatically adjust the base value and peak current according to the set value of the current to improve welding. Seam forming reduces weld spatter. Background technique [0002] CO 2 Gas shielded welding is a welding method with high efficiency, energy saving, low hydrogen and rust resistance, and high comprehensive economic benefits. However, it has the disadvantages of large splash and poor forming, which restricts its further promotion and application. So far, it has not been able to fundamentally solve the CO 2 Gas shielded welding has the disadvantages of large spatter and poor forming. The reason is mainly that a good description method has not been found for the mutual constraints and internal relations among the various s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/095
Inventor 蒋力培俞建荣邹勇罗建蒲雨龙
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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