Industrial Precision Series

Precision Medium Frequency Projection Welding Machine

Engineered for Nuts, Bolts & Sheet Metal Applications

The RX-HB25K Medium Frequency Inverter Spot & Projection Welder is designed for extreme industrial precision. Featuring 1000 Hz inverter technology, 3-phase balanced power supply, 73,500 N force, and 25 KA short-circuit current—eliminating thermal deformation, spatter, and high energy consumption.

Traditional Welding Limitations

• Thermal Deformation & Burn-Through: Excessive heat input warps thin sheet metals, breaks through base materials, and compromises component precision.
• Heavy Spatter & Secondary Grinding: Severe weld spatter leaves burrs and rough projections, requiring manual labor for secondary grinding.
• Demagnetization Risk: High heat during rotor and permanent magnet welding leads to thermal demagnetization, causing torque drop and operational noise.
• Power Grid Shock & High Consumption: Single-phase AC power causes grid voltage drops, low power factor, and excessively high electric bills.

RX-HB25K Technological Breakthroughs

• Ultra-Small Heat Affected Zone (HAZ): 1000 Hz high-frequency inverter enables millisecond temperature control, eliminating deformation and coating damage.
• Significant Energy Efficiency: Balanced 3-phase power supply delivers a power factor >0.95, reducing power consumption by 30%–45%.
• High-Quality Spatter-Free Output: Constant voltage/current closed-loop control guarantees uniform penetration without burrs or secondary finishing.
• Electrode Longevity: Smooth DC output eliminates zero-crossing power gaps, extending electrode lifetime by more than 50%.

Fasteners & Stampings

Automotive & industrial square projection nuts, hex flange nuts, round nuts, grounding studs, and terminal pins joined to sheet metal.

Automotive Components

High-strength steel (HSS/AHSS) body structural parts, door lock brackets, seat recliner/rails, brake shoe brackets, and clutch plates.

Home Appliances & Cabinets

Compressor mounting plates, inner drum brackets, door hinges, switchgear enclosure threaded mounts, and handles.

Dissimilar Metals & Special Alloys

Copper-to-steel, brass-to-steel, stainless steel, silicon steel motor rotors, heat sinks, galvanized sheets, and wire mesh.

Quality Assurance

Firmly Welded, Beautifully Finished

Every batch of workpieces processed by our RX-HB25K series undergoes rigorous mechanical testing. From galvanized sheet spot welding to hot-formed steel bolt projection welding, base material destruction occurs prior to weld joint failure in pull tests.

Batch Assembly Line of Medium Frequency Inverter Welders

Precision Calibration & Inspection Station

Global Industrial Partners & POs

CE & Quality System Qualifications