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

Controlled via a touchscreen, the TN-20KA is mainly used for welding thick workpieces and high-conductivity metal medium-frequency spot welding machine boasts a display that not only indicates the welding current but also promptly alerts users to any faults or errors. The control system enhances functionality by converting the voltage frequency to 1000HZ, and concurrently, the transformer frequency is elevated to match at 1000HZ. This elevation results in an increased secondary loop inductance value, making the machine ideal for welding thicker workpieces and highly conductive metals like aluminum and galvanized steel. Due to its versatility, it finds extensive application in various industries, including new energy vehicles, home appliances, and construction.

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.

Comparison with Similar Products

Feature / Metric	TN-20KA (1000Hz)	Conventional Low-Frequency Spot Welder (50/60Hz)	Standard MF Spot Welder (≈500Hz)
Operating frequency	1000Hz	50 / 60 Hz	≈500Hz
Transformer frequency match	Yes — matched to 1000Hz	No — mains frequency	Matched to ~500Hz
Secondary loop inductance	Higher (improved for thick/conductive metals)	Lower	Moderate
Suitability for thick workpieces	High	Low–moderate	Moderate–high
Suitability for aluminum / galvanized steel	Excellent	Poor–moderate	Good
Control & monitoring	Touchscreen, current readout, fault alerts	Basic analog/digital controls	Varies; often basic digital
Weld quality consistency on conductive metals	High	Variable	Good
Typical applications	New energy vehicles, home appliances, construction	Light assembly, thin-sheet welding	General manufacturing, thicker sheets but less conductive metals
Maintenance & diagnostics	Easier — on-screen alerts	Manual troubleshooting	Varies; less advanced than TN-20KA
Energy transfer efficiency for thick conductive parts	Optimized	Less optimized	Reasonable but lower than 1000Hz approach
Typical operator learning curve	Moderate (touchscreen simplifies use)	Low–moderate	Moderate