TN-20KA is mainly used for welding thick workpieces and high-conductivity metal medium-frequency spot welding machine

TN-20KA is a medium-frequency spot welding machine designed for welding thick workpieces and high-conductivity metals. Controlled via a touchscreen, the unit provides a clear welding current display and real-time fault/error alerts. By converting the input voltage frequency to 1000Hz and matching the transformer frequency at 1000Hz, the system increases the secondary loop inductance, making the TN-20KA particularly well suited for materials such as aluminum and galvanized steel. Its robust performance and adaptability make it a common choice in industries including new energy vehicles, home appliances, and construction.

Key features and advantages

• Touchscreen control & monitoring

  • Touchscreen interface for intuitive operation.
  • Real-time welding current readout and immediate fault/error indications, improving operator response and reducing downtime.

• 1000Hz medium-frequency system

  • Input voltage is converted to 1000Hz and the transformer frequency is elevated to 1000Hz.
  • This frequency increase raises the secondary loop inductance, which stabilizes arc behavior and improves energy transfer for thicker and highly conductive materials.

• Optimized for thick and high-conductivity metals

  • Engineered for reliable joining of thick workpieces and high-conductivity metals (notably aluminum and galvanized steel).
  • Produces consistent welds where conventional low-frequency systems may struggle.

• Wide industry applicability

  • Developed for manufacturing environments in new energy vehicles, home appliance assembly, and construction components, where thicker sheets and conductive materials are common.

• Improved weld quality and process stability

  • The higher medium frequency and resulting inductance reduce the risk of poor fusion or burn-through on conductive metals and help achieve repeatable weld profiles.

• Operator safety and maintenance

  • Fault alerts on the display enable faster troubleshooting.
  • Simpler diagnostics via the interface reduce maintenance time.

Technical & Application Notes (concise)

• Machine type: Medium-frequency spot welder (inverter-based).
• Control: Touchscreen with current readout and fault alerts.
• Frequency: 1000Hz system conversion (input and transformer matched).
• Electrical effect: Increased secondary loop inductance for improved welding behavior on conductive/thick materials.
• Typical materials: Aluminum, galvanized steel, and other high-conductivity metals.
• Typical industries: New energy vehicles, home appliances, construction.

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