en

    Resistance spot welding

    We create solid welded joints between the two materials, using the resistance spot welding machines with high pressure on small surface and high electric energy. The most important parameters in the resistance spot welding are the electric current, the resistance, the heat and pressure. In the resistance spot welding, both welding electrodes push the components towards each other. Subsequently, the machine turns on the welding to induce a contact resistance. This leads to thermoelectric heat, resulting in melt. The electrical current is turned off, the liquid material hardens and the welded joint is solid. When cooling the melt, pressure must be maintained to avoid the pores. We use the facilities with different parameters for resistance spot welding of wide-range materials. The thickness as well as the product shape complexity play a role in selecting individual machines. A variety of facilities, such as the model DALEX PL63 OHK, made by BEZ Bratislava BN 20.12, or the model DANUBIUS BP 90.22 meet demanding criteria and requirements for the resistance spot welding.

    Resistance spot welding

    We create solid welded joints between the two materials, using the resistance spot welding machines with high pressure on small surface and high electric energy. The most important parameters in the resistance spot welding are the electric current, the resistance, the heat and pressure. In the resistance spot welding, both welding electrodes push the components towards each other. Subsequently, the machine turns on the welding to induce a contact resistance. This leads to thermoelectric heat, resulting in melt. The electrical current is turned off, the liquid material hardens and the welded joint is solid. When cooling the melt, pressure must be maintained to avoid the pores. We use the facilities with different parameters for resistance spot welding of wide-range materials. The thickness as well as the product shape complexity play a role in selecting individual machines. A variety of facilities, such as the model DALEX PL63 OHK, made by BEZ Bratislava BN 20.12, or the model DANUBIUS BP 90.22 meet demanding criteria and requirements for the resistance spot welding.

    TECNA 7913 P

    The TECNA 7913 P pneumatic spot gun is most often used for light production works and simple part welding. It is suitable for almost every use. With the TECNA 7913 P, you can weld 1.8 and 1.8-mm wide sheets and 6-mm diameter steel rods, as well as the galvanized sheets. 

    The spot gun is equipped with the integrated synchronous timer. The compensation circuit starts the timer only when there is no proper passage of current, which enables to perform on oxidized sheets, on surfaces with paint residues or on black sheets. The current control with phase shift adjustment carries out the difficult welds, on very thin thickness, on rods with reduced diameter, on stainless steel sheet. This feature guarantees the stable welding. 

    The pressure switch, which turns on as soon as there is the working pressure between the electrodes saves welding time significantly.

    Parameters


    Time adjustment (cycles)

    2 - 65

    Supply voltage 50 Hz

    400 V

    Nominal power at 50%

    6 kVA

    Max. welding power

    16 kVA

    Short circuit current with arms L= 150 mm

    8,2 kA

    Thermal current 100%

    1700 A

    No load output voltage

    2,5 V

    Insultation class

    F

    Cooling

    water

    Delayed fuses

    16 A

    Max. electrode force with arms L = 150 mm

    120 daN

    Arms gap

    94 mm

    Max. electrode stroke with arms L = 125 mm

    35 mm

    Weight

    13 kg

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    Koval Systems, a. s.

    KOVAL SYSTEMS, a. s.

    Krížna 950/10
    018 61  Beluša
    Slovak republic

    IČO: 31602029
    DIČ: 2020441676
    IČ DPH: SK2020441676
    Business register: The District court in Trenčín, insert file No. 10531/R, section Sa

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