Mid-Frequency DC Inverter Spot Welder Manufacturer

Mid-Frequency DC Inverter Spot Welder

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Spot Welding

Types
Samples
Specifications
Features
Details

Resistance welding machine

Mid-frequency DC inverter spot welder converts three-phase AC power into DC power through rectification. The output of the MFDC inverter will be squares waves of electrical current at medium frequency of 1000HZ after controlled by the inverter circuit composed of IGBTs. Then it is transferred to primary transformer and the voltage is stepped down and rectified to provide a low-pulse DC current for welding the workpiece. The inverter adjusts the duty cycle of the IGBTs by feeding back the primary or secondary welding current, thereby achieving a constant current during the entire welding process.

Applicable Materials

Copper, aluminum, nickel, molybdenum, tungsten, manganese, gold, silver, and other non-ferrous metals

Applications

Low carbon steel plate welding, stainless steel plate welding, galvanized plate welding, aluminum plate welding, spot welding of wire, multiple spot projection welding, spot welding of high-strength steel in the automotive manufacturing industry, nut projection welding, as well as welding of copper wire, silver contact, and copper plate in the high and low voltage electrical industry.

Types of Mid-Frequency DC Inverter Spot Welders We Provide

Standard MFDC inverter spot welder
For spot welding of metal sheets (copper, aluminum, stainless steel, galvanized steel)
Kettle spout spot welding machine
For one-time spot welding of kettle spout
Precision MFDC inverter spot welder
For precision welding of hardware parts, such as wires
Band clamp spot welding machine
For welding of band clamp
MFDC inverter table welder
For welding of small hardware
Desktop MFDC inverter spot welder
For multi-spot automatic welding of small hardware
Automotive nuts spot welder
For automatic moving welding of large nuts
High power MFDC inverter spot welder for flexible copper connector
For welding of flexible copper connector
Automatic spot welding machine for separator filter
For welding of separator filter

Welding Samples

Welding of nuts
Welding of nuts
Plate type welding
Plate type welding
Plate type welding
Plate type welding
Mesh type welding
Mesh type welding
Mesh type welding
Copper series welding

Technical Specifications

Model	Voltage (V)	Rated Capacity (kVA)	Max. Short Circuit Current (kA)	Duty Cycle (%)	Electrode Force (kg)	Electrode Stroke (mm)	Cooling Water (L/min)
WL-MF-5K	380 3PH	5	1.5	50	30	25	10
WL-MF-10K	380 3PH	10	3	50	100	50	20
WL-MF-15K	380 3PH	15	4.5	50	100	50	20
WL-MF-25K	380 3PH	25	7.5	50	350	80	20
WL-MF-35K	380 3PH	35	10	50	350	80	20
WL-MF-50K	380 3PH	50	13	50	800	100	30
WL-MF-75K	380 3PH	75	18	50	800	100	30
WL-MF-100K	380 3PH	100	21	50	1000	100	30
WL-MF-120K	380 3PH	120	23	50	1000	100	30
WL-MF-160K	380 3PH	160	28	50	1000	100	30
WL-MF-200K	380 3PH	200	32	50	1500	100	30
WL-MF-250K	380 3PH	250	40	50	1500	100	50
WL-MF-300K	380 3PH	300	48	50	2000	100	50
WL-MF-350K	380 3PH	350	55	50	2000	100	60
WL-MF-400K	380 3PH	400	62	50	2000	100	60
WL-MF-500K	380 3PH	500	70	50	2000	100	60

Features

Reduced welding spatter: achieves stable and high-quality welding.
Short power-on time, high thermal efficiency, and aesthetically pleasing and sturdy weld.
High control precision: by ensuring that the charging voltage reaches the set value before initiating the discharge welding process, the welding energy fluctuation is minimized, guaranteeing a stable and precise welding quality.
Energy-efficient, eco-friendly, and durable: The MFDC spot welder is characterized by high thermal efficiency, a compact welding transformer, and minimal iron loss, resulting in over 30% energy savings compared to AC spot welding machines and secondary rectifier spot welding machines.
Three-phase power supply input with fault diagnosis and protection functions.

Details

Intelligent microcomputer controller
Touch screen allows for easy configuration and saving of welding parameters. The interface can be set to either Chinese or English, enabling precise adjustment of welding current parameters.
Conductive copper tape
Thickened copper tape aims to enhance its conductivity.
Customized electrodes
Customized electrodes (can be tailored to different materials and products)
Customizable arm length
Arm length can be customized according to the product size.