Automatic Welding, 2023, №02



2023 №02 (04)

DOI of Article 10.37434/as2023.02.05

2023 №02 (06)

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Avtomaticheskaya Svarka (Automatic Welding), #2, 2023, pp. 34-39

Machine for resistance spot microwelding

Yu.M. Lankin, E.M. Bayshtruk, V.F. Semikin, I.Yu. Romanova

E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua

Resistance microwelding due to a small duration of a welding current pulse is performed in condenser machines and DC machines with transistor adjustment, which have some disadvantages (not sufficient regulation characteristics, complexity and unreliability). In the designed machine for resistance microwelding on high frequency AC, these disadvantages are eliminated. In the machine, the control of the welding cycle is performed by a mirocontroller, the regulating welding current pulse is formed by the transistor inverter of the bridge type, the spring drive for movement and compression of electrodes is made on the basis of a linear drive with a step motor. Applying the similarity theory when designing microwelding modes in the designed machine, it is possible to use all databases of the modes of welding metals of medium and large thicknesses at the industrial frequency. 8 Ref., 5 Fig.
Keywords: resistance microwelding, alternating current, high frequency, inverter power source, electromechanical compression drive, microprocessor control, special pulse shape, current stabilization


Received: 21.02.2022

References

1. Lankin, Yu.M. (2021) Requirements to technical characteristics of resistance microwelding machines. The Paton Welding J., 11, 34-37. https://doi.org/10.37434/as2021.11.07
2. Lebedev, V.K., Yavorsky, Yu.D. (1960) Application of similarity criteria for determination of resistance welding modes. Avtomatich. Svarka, 8, 37-44 [in Russian].
3. Paerand, Yu.E., Bondarenko, Yu.V., Bondarenko, A.F. (2008) Current pulse formers for resistance welding. Tekhnologiya i Konstruirovanie v Elektronnoj Apparature, 3, 25-30.
4. Moravsky, V.E. (1963) Welding by accumulated energy. Kyiv, Gostekhizdat Ukr.SSR
5. Моравский В.Э. (1963) Сварка аккумулированной энерги- ей. Киев, Гостехиздат УССР [in Russian].
6. Leonov, V.P., Atvush, V.E., Grechenkova, L.A., Baranshchikova, L.A. (1987) Welding current supply with programmed electric parameters and pulse shape. Svarochn. Proizvodstvo, 1, 27-28 [in Russian].
7. Bondarenko, O.F., Ryzhakova, T.O., Kozhushko, Yu.V. (2018) Improved procedure of loss evaluation in pulse converters of resistance microwelding machines. Tekhnologiya ta Konstruyuvanniya v Elektronnii Aparaturi, 3, 38-42 [in Russian]. https://doi.org/10.15222/TKEA2018.3.38
8. Bondarenko, A.F. (2007) Current pulse formers for resistance microwelding machines. In: Syn. of Thesis for Cand. of Tech. Sci. Degree. Alchevsk, DonGTU [in Russian].
9. Lankin, Yu.N., Semikin, V.F., Osechkov, P.P., Bajshtruk, E.N. (2012) Electrode compression drive for resistance spot microwelding. The Paton Welding J., 2, 45-47

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