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  4. 2021
  5. VOL 43, NO 5 (2021)
  6. pp. 43-54

SYNTHESIS OF FUZZY LOGIC MATHEMATICAL MODEL FOR ADAPTIVE CONTROL OF THE MIG/MAG SURFACING

V.V. Dolinenko, E.V. Shapovalov, V.A. Kolyada and Т.G. Skuba

Èlektron. model. 2021, 43(5):43-54
https://doi.org/10.15407/emodel.43.05.043

ABSTRACT

A functional transformer with fuzzy logic is synthesized, which allows to get the estimations of weld beads height and width at the arbitrary values of entry parameters: wire feed speed and torch transverse oscillations amplitude. The influence of these input parameters on the base metal penetration and beads geometric parameters, welded using MIG/MAG process, were studied. Surfacing was performed by a robotic system with an arc power supply "Fronius TPS-320i", which operated in the mode of arc process synergetic control. The formation of both individual beads and surfacing layers at different overlap coefficients has been studied. The arc surfacing process was realized in a mixture of protective gases (Ar+18%CO2) using a welding wire Св-08Г2С with a 1.0 mm diameter. Surfacing speed – 4 mm/s, frequency of welding torch oscillations – 1 Hz. The obtained experimental dependences of beads width and height, as well as the length of the welding pool can be used in both: creating of multi-pass MIG/MAG surfacing program for robotic restoration of critical purposes parts surfaces, and in preparing of FEM model of MIG/MAG surfacing.

KEYWORDS

robotic MIG/MAG surfacing, geometrical parameters of beads, mathema­ti­cal model of surfacing process, functional transformer with fuzzy logic.

REFERENCES

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