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Main Application and Characteristics
Resistance welding is a technique that melts metal by using resistance heating generated from the welding current passing through the workpiece itself. By adjusting the frequency of the welding current, the quality of the weld can be significantly improved.
We have developed the Middle Frequency Inverter DC Welding Machine, which increases the welding current frequency from the standard 50Hz or 60Hz to 1000Hz. This improves control precision, achieves a power factor over 98%, eliminates eddy current interference, and enhances overall welding performance.
Some applications require higher or lower frequencies than 1000Hz, so we also developed the VF Series Variable Frequency Welding Machine. It allows for adjustable welding frequency using an IGBT pulse width controller and an adjustable transformer to meet different needs.
Despite these improvements, neither system automatically adjusts the welding current based on subtle changes in the workpiece. To address this, we developed the "Dynamic Resistance Principle Middle Frequency Self-Adaptive Control System." This system can be installed on both MF and VF models, allowing automatic current adjustment during welding to ensure consistent quality, even with varying material thickness, surface conditions, or operator differences.
These advanced machines are powered by three-phase electricity, making them more stable, efficient, and suitable for high-conductivity materials like aluminum, copper, and silver. They are ideal for industries such as automotive and aerospace, where high-quality welding is essential.
Main Technical Parameters
We offer customized solutions. Please feel free to email us with your workpiece drawings, and we will provide you with a tailored machine design at a competitive price. --- This version has been restructured for clarity, consistency, and readability while maintaining all original details.
Model No.: MF-150KVA
Rated Capacity: 50kVA - 300kVA
Electrode Stroke: 70mm / 100mm
Cooling Water Flow: 16L/Min; 45L/Min
Trademark: Durowelder
Transport Package: Wooden Case
Specification: Customizable
Origin: Guangdong, China
HS Code: 8515319000
Mf-150kVA Middle Frequency Inverter DC Spot & Projection Welding MachineMain Application and Characteristics
Resistance welding is a technique that melts metal by using resistance heating generated from the welding current passing through the workpiece itself. By adjusting the frequency of the welding current, the quality of the weld can be significantly improved.
We have developed the Middle Frequency Inverter DC Welding Machine, which increases the welding current frequency from the standard 50Hz or 60Hz to 1000Hz. This improves control precision, achieves a power factor over 98%, eliminates eddy current interference, and enhances overall welding performance.
Some applications require higher or lower frequencies than 1000Hz, so we also developed the VF Series Variable Frequency Welding Machine. It allows for adjustable welding frequency using an IGBT pulse width controller and an adjustable transformer to meet different needs.
Despite these improvements, neither system automatically adjusts the welding current based on subtle changes in the workpiece. To address this, we developed the "Dynamic Resistance Principle Middle Frequency Self-Adaptive Control System." This system can be installed on both MF and VF models, allowing automatic current adjustment during welding to ensure consistent quality, even with varying material thickness, surface conditions, or operator differences.
These advanced machines are powered by three-phase electricity, making them more stable, efficient, and suitable for high-conductivity materials like aluminum, copper, and silver. They are ideal for industries such as automotive and aerospace, where high-quality welding is essential.
Main Technical Parameters
| Parameter/Model | MF-50KVA | MF-90KVA | MF-150KVA | MF-170KVA | MF-250KVA | MF-300KVA |
| Rated Voltage | 380 - 415 - 480V, 50/60Hz | |||||
| Rated Capacity | 50KVA | 90KVA | 150KVA | 170KVA | 250KVA | 300KVA |
| Rated Duty Cycle | 50% | 50% | 50% | 50% | 50% | 50% |
| Max Welding Current | 18,500A | 23,500A | 32,000A | 40,500A | 56,500A | 80,000A |
| Electrode Stroke | 75MM | 100MM | ||||
| Welding Arm Spacing | 260MM | 320MM | ||||
| Air Source Pressure | 0.6MPa | |||||
| Cooling Water Flow | 16L/Minute | 25L/Minute | 35 L/Minute | 45L/Minute | ||
We offer customized solutions. Please feel free to email us with your workpiece drawings, and we will provide you with a tailored machine design at a competitive price. --- This version has been restructured for clarity, consistency, and readability while maintaining all original details.
Pilot Control Devices,Pilot Control Valve,Pilot Control Element,Hydraulic Directional Control Valve
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