Chengdu Xinwei Welding Technology Co., Ltd.
| Delivery Time | 25-45 working days |
| Payment Terms | Western Union,T/T,D/A,L/C,D/P |
| Packaging Details | wooden box |
| Packing | Wooden Packing |
| Name | Spot Welding Equipment |
| voltage | 380 |
| rated duty cycle | 50% |
| Video outgoing-inspection | Provided |
| Machinery Test Report | Provided |
| Supply Ability | 10 sets per month |
| warranty | 1 Year |
| Warranty of core components | 1 Year |
| Application | Welding Repair Machine |
| Product name | MF Inverter Stationary Spot Welding — Precision for Dissimilar Metals |
| Brand Name | Xinwei |
| Place of Origin | Sichuan, China |
| Certification | CCC CE ISO |
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Product Specification
| Delivery Time | 25-45 working days | Payment Terms | Western Union,T/T,D/A,L/C,D/P |
| Packaging Details | wooden box | Packing | Wooden Packing |
| Name | Spot Welding Equipment | voltage | 380 |
| rated duty cycle | 50% | Video outgoing-inspection | Provided |
| Machinery Test Report | Provided | Supply Ability | 10 sets per month |
| warranty | 1 Year | Warranty of core components | 1 Year |
| Application | Welding Repair Machine | Product name | MF Inverter Stationary Spot Welding — Precision for Dissimilar Metals |
| Brand Name | Xinwei | Place of Origin | Sichuan, China |
| Certification | CCC CE ISO | ||
| High Light | aluminum projection welders ，aluminum spot projection welding machine | ||
The Xinwei DN(B) Series MF (Medium Frequency) Stationary Spot Welding Machine is engineered for manufacturers who demand precision-controlled welding of aluminum, steel, and dissimilar metal combinations. Powered by MF inverter technology, this heavy-duty stationary welder delivers consistent, repeatable weld quality across high-volume production environments — from automotive component assembly to industrial fabrication of mixed-material structures.
Unlike conventional AC welders, the MF inverter topology provides closed-loop current control with sub-millisecond response, making it uniquely capable of handling the narrow process windows required for aluminum and dissimilar metal welding — where heat must be precisely delivered and immediately terminated.
Medium Frequency (1000Hz) inverter technology converts standard 50/60Hz AC input to high-frequency DC output. This provides three critical advantages: near-unity power factor for energy efficiency, closed-loop current feedback for ±1% weld current accuracy, and dramatically reduced transformer size for faster magnetic response. For aluminum welding — where heat must rise and fall within milliseconds — MF inverter control is not an option, it is a requirement.
The DN(B) Series handles both aluminum-to-aluminum and steel-to-steel resistance welding — a rare capability in a single machine. The precise current control and rapid heat delivery of the MF inverter make it possible to weld aluminum (which requires 2-3x the current of steel but in a shorter pulse) without overheating or expulsion. For manufacturers producing mixed-material assemblies, this eliminates the need for two separate welding stations.
The rigid stationary frame and high-capacity water-cooled transformer are designed for multi-shift, high-duty-cycle operation. With power ratings from 100 to 250 KVA and 50% duty cycle at rated power, the DN(B) Series handles sheet thicknesses up to 6.0+6.0mm — suitable for structural components, heavy-gauge enclosures, and automotive sub-assemblies.
As the product name states — this is a customized solution. Electrode geometry, arm reach, stroke length, automation integration (PLC/robotic), and power rating are all configurable. Xinwei engineers work directly with your production team to design a welding station that fits your specific workpiece dimensions, material specifications, and throughput requirements.
| Industry | Typical Workpiece | Material |
|---|---|---|
| Automotive Manufacturing | Body panels, bracket assemblies, battery trays, heat shields | Aluminum, high-strength steel |
| Appliance Production | Washer/dryer drums, oven cavities, refrigerator panels | Stainless steel, aluminum, coated steel |
| Electrical Enclosures | Switchgear cabinets, control boxes, junction boxes | Steel, aluminum, galvanized sheet |
| Metal Furniture | Office furniture frames, storage cabinets, shelving | Steel, aluminum tubing, sheet metal |
| General Fabrication | Structural assemblies, frames, custom metal components | Mild steel, stainless steel, aluminum |
The DN(B) Series employs MF (Medium Frequency) inverter resistance welding technology. Three-phase AC input is first rectified to DC, then inverted to 1000Hz medium-frequency AC via IGBT modules. This high-frequency current passes through a compact welding transformer, where it is stepped down to high-current, low-voltage output, then rectified back to DC at the secondary side. The result is ripple-free DC welding current delivered through water-cooled copper electrodes to the workpiece interface. Joule heating at the material contact resistance creates localized melting, and pneumatic electrode force forges the joint. The MF inverter's closed-loop feedback monitors and adjusts current in real time — critical for aluminum, where process tolerance is measured in milliseconds.
| Parameter | DN(B)-100 | DN(B)-160 | DN(B)-200 | DN(B)-250 |
|---|---|---|---|---|
| Rated Power (KVA) | 100 | 160 | 200 | 250 |
| Power Input | 3φ AC 380V | |||
| Max. Short Circuit Current (KA) | 30 | 35 | 40 | 45 |
| Duty Cycle (%) | 50 | |||
| Max. Electrode Force (N) | 6000 | 6000 | 10000 | 15000 |
| Electrode Length (mm) | 450 | 450 | 450 | 500 |
| Working Stroke (mm) | 80 | |||
| Cooling Consumption (L/min) | 20 | |||
| Max. Welding Capacity (mm) | 3.0+3.0 | 4.0+4.0 | 5.0+5.0 | 6.0+6.0 |
Yes. The MF inverter technology provides the precise, rapid heat control that aluminum resistance welding demands. The closed-loop current feedback ensures consistent weld quality even with aluminum's high thermal conductivity. We recommend sending sample workpieces for a welding feasibility test to determine optimal parameters for your specific application.
Electrode geometry and material, arm reach and configuration, power rating selection, automation integration (PLC control, robotic loading), stroke adjustment range, and fixturing. Our engineering team designs the welding station around your specific workpiece and production requirements — not the other way around.
MF inverter converts 50/60Hz input to 1000Hz before transforming, resulting in a much smaller, more efficient transformer. It delivers DC output with closed-loop current control, near-unity power factor, and sub-millisecond response. Conventional AC has no current feedback, lower power factor, and cannot match the process control required for aluminum or coated steels.
Every DN(B) machine undergoes step-by-step QC inspection during production. Before packing, each machine performs weld-sample testing with documented parameter settings. All machines are packed in extra-thickness cartons with PE foam and waterproof membrane — we have zero transport damage incidents to date.
Send us your workpiece drawings, material specifications, and production requirements. Our engineering team will evaluate your application, recommend the optimal DN(B) configuration, and provide a custom welding solution — including electrode design, power rating, and automation options.
Send Drawing | Request Welding Test | Get Custom Solution
Company Details
Business Type:
Manufacturer
Year Established:
2003
Total Annual:
$35000000-$50000000
Employee Number:
70~95
Ecer Certification：
Verified Supplier
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