MFDC Spot/Press Welders | Heron Intelligent Equipment

MFDC Spot/Press welders are resistance welding machines that use Medium Frequency Direct Current (MFDC) to weld two or more metal parts together. HERON has introduced numerous welding advancements and continues to play a key role in MFDC spot/press welders development over the past 30 years. Our products are equipped with roller ram and strong frame to excellent spot and reliable projection welding process, with H type and L type available.

220KVA-880KVA Stationary Spot Welder, Projection Welder

The resistance welding machine power ranges from 220KVA to 880KVA.
The maximum short circuit current from 40KA to 110KA.
At an air pressure of 6bar, the welding pressure of our welder ranges between 10000~24000N.

55KVA-440KVA Stationary Spot Welder, Projection Welder

Low configuration MFDC resistance welding machines are primarily used for spot welding and projection welding processes, such as the welding of carbon steel, stainless steel, aluminum, copper and other alloys.

25KVA-220KVA Stationary Spot Welder, Projection Welder

The resistance welding machine power ranges between 25KVA to 220KVA.
The maximum short circuit current of our welding machine ranges between 15.5KA to 40KA.
At an air pressure of 6bar, the welding pressure of our welder reaches up to a range of 480~15000N.

MFDC Metal Electric Resistance Seam Welding Machine

The power of our resistance welding machine ranges from 200KVA to 880KVA.
The maximum short circuit current of our welding machine ranges between 20KA to 60KA.
At an air pressure of 6bar, the welding pressure of our welder reaches between 1200~35000N.

25/55/110/165/220/250/330/440KVA MFDC Spot/ Perss Welder

220/250/330/440/500/660/750/880KVA MFDC Spot/ Press Welder

H type MFDC Spot & Projection Welder DB-880KVA

The 880KVA MFDC Spot/ Press Welder is used in auto-part industry, appliance industry, compressor industry, hardware manufacturing industry, etc. And the welded workpieces cover car door frame, car seat slide, water heater inlet and outlet pipe, dishwasher liner, etc.

H type MFDC Spot & Projection Welder DB-750KVA

It is widely used in auto parts industry, home appliance industry, compressor industry, hardware industry, etc., and its modular design facilitates straightforward utilization and maintenance. Comply with European CE and North American CUL standards, the product delivers superior rigidity, as well as a streamlined, space-saving design.

H type MFDC Spot & Projection Welder DB-660KVA

Adopting Heron IF inverter controller HRC802/HRC803 and Heron IF transformer, the product is widely used in the spot welding, projection welding, seam welding, diffusion welding of many different materials, such as non-ferrous metals, high-temperature alloys, low carbon steel, stainless steel, high-strength steel, galvanized steel, aluminum alloy, etc.

H type MFDC Spot & Projection Welder DB-500KVA

Widely used in the spot welding, projection welding, seam welding, diffusion welding of many different materials, such as non-ferrous metals, high-temperature alloys, low carbon steel, stainless steel, high-strength steel, galvanized steel, aluminum alloy, etc., the product is in line with European CE and North American CUL standards, with modular design to simplify usage and maintenance.

H type MFDC Spot & Projection Welder DB-440KVA

The 440KVA MFDC Spot is a highly versatile welding tool that finds extensive application in the automotive, appliance, compressor, and hardware manufacturing industries. Multiple welding techniques such as spot welding, projection welding, seam welding, and diffusion welding, involving various materials including non-ferrous metals, high-temperature alloys, low carbon steel, stainless steel, high-strength steel, galvanized steel, and aluminum alloy, can be effortlessly carried out using this equipment, with a modular design that makes it remarkably user-friendly and easy to maintain.

H type MFDC Spot & Projection Welder DB-330KVA

The controller adopts DSP architecture, offering the options of 1KHZ/2KHZ/4KHZ frequencies to ensure stability and reliability. It is equipped with its own I/O interface for direct control of the proportional valve, which is specifically designed for applications in the auto-part industry, appliance industry, compressor industry, hardware manufacturing industry, and more, with modular design facilitating user-friendly operation and maintenance.

MFDC spot/projection welder

Main features

Designed to excel in both spot and projection welding applications with unparalleled accuracy in both realms, Heron's MFDC Welders provides excellent weld quality and substantial cost reduction.

Advantages of the process

Reduces power loss

Rapid current rise

Stable current output

High heating intensity

MFDC welding machines from 110KVA to 2500KVA

Heron' s selection of MFDC resistance welding solutions ranges from 110KVA to 2500KVA.

Our MFDC welding technology effectively solves longstanding technical problems in the industry, particularly with high-temperature alloys and dissimilar metals like copper and steel.

110~440KVA

E series

220~880KVA

H series

1250~2500KVA

Custom

E Series MFDC Welder---110/165/220/250/280/330/440KVA

Choose based on your industry application, from a range between 110KVA to 440KVA power supply.

E series

Features

Our E Series MFDC spot and projection welder with roller ram and strong frame, ensures a excellent spot and reliable projection welding process, with the rise of welding current in 3ms and a maximum short-circuit current of 60KA.

Benefits

With features like reduced power loss, rapid current rise, stable current output, constant current,high heating intensity, you can significantly improve production efficiency, leading to higher output and better resource management.

Model #		DB-165	DB-220	DB-250	DB-280	DB-330	DB-440
Power Rated Capacity@20d.c.	KVA	165	220	250	280	330	440
Power Supply	V/Φ/Hz	380V / 3P/ 50Hz or 480V / 3P/ 60Hz
Max. Primary Current	A	120	150	150	150	240	350
Primary Cable	MM2	335+216	335+216	335+216	335+216	350+216	350+216
Max. Short Circuit Current	KA	30	40	45	45	58	59.9
Secondary Voltage	V	13	10.4	12.5	12.5	13	10.4
Welding Cylinder Size	*ΦL**	Φ140*120	Φ140*120	Φ160*120	Φ160*120	Φ140*120	Φ140*120
Max. Force/5Bar	N	7500	7500	10000	10000	15000	15000
Throat Depth	MM	472	472	472	472	472	472
Arm Gap	MM	500	500	500	500	500	500
Dimensions	H(MM)	2182	2182	2204	2204	2244	2244
	L(MM)	1310	1310	1310	1310	1310	1310
	W(MM)	880	880	880	880	880	880
*Package size (HLW)*	MM	H+150, L+200, W+200
Weight	MM	663	716	732	732	864	889
Standard Configurations	Operation	Foot Pedestal Start
	Control	Heron HRC-802
	Components	Heron Round Cylinder (or Small Roller Ram) SMC Pneumatic Components IFM Flow Switch and See-through Tube HRC-802 Programming Panel
Add-Ons		▢ PLC and Touch Screen ▢ Quality Monitor ▢ Safety Grating ▢ Single or Double-handed Start ▢ Optional Configurations Available on Request

H Series MFDC Welder---220/250/330/440/500/660/750/880KVA

Choose based on your industry application, from a range between 220KVA to 880KVA power supply.

H series

Features

Our H Series MFDC spot and projection welder modular design simplifies both usage and maintenance, ensuring you can operate it efficiently. The streamlined, space-saving design enhances productivity by optimizing your workspace. Moreover, our MFDC welder meets both European CE and North American CUL standards, ensuring superior rigidity and safety for your operations.

Benefits

With features like enhanced stability of welding quality, reduced heat-affected zone, streamlined production, cost-effective solution.

Model #		DB-220	DB-250	DB-330	DB-440	DB-500	DB-660	DB-750	DB-880
Power Rated Capacity@20d.c.	KVA	220	250	330	440	500	660	750	880
Power Supply	V/Φ/Hz	380V / 3P/ 50Hz or 480V / 3P/ 60Hz
Max. Primary Current	A	150	150	240	350	339	500	508	700
Primary Cable	MM2	335+216	335+216	350+216	350+216	370+216	370+216	390+216	390+216
Max. Short Circuit Current	KA	40	45	58	59.9	70	85	90	110
Secondary Voltage	V	10.4	12.5	13	10.4	12.5	10.4	12.5	10.4
Welding Cylinder Size	*ΦL**	Φ160*150	Φ200*150	Φ200*150	Φ200*150	Φ250*150	Φ250*150	Φ300*150	Φ300*150
Max. Force/5Bar	N	10000	10000	15000	15000	24000	24000	35000	35000
Throat Depth	MM	400	400	400	400	400	400	400	400
Arm Gap	MM	500	500	500	500	500	500	500	500
Dimensions	H(MM)	2435	2435	2435	2435	2435	2435	2435	2435
	L(MM)	1315	1310	1310	1310	1310	1310	1310	1310
	W(MM)	1021	1021	1021	1251	1251	1251	1251	1251
*Package size (HLW)*	MM	H+150, L+200, W+200
Weight	MM	1411	1442	1485	1515	1884	1962	1962	2116
Standard Configurations	Operation	Double-Handed Start
	Control	Heron HRC-802
	Components	Heron Round Cylinder (or Small Roller Ram) FESTO Pneumatic Components IFM Flow Switch and See-through Tube HRC-802 Premium Programming Panel Mitsubishi PLC and 7-inch Kunlun Touchscreen
Add-Ons		▢ Siemens PLC & Touch Screen ▢ Quality Monitor ▢ Safety Fences ▢ Light Curtain ▢ Other Configurations Available on Request

L series and H series capacitor discharge welder

E Series Medium Frequency Welder

H Series Medium Frequency Welder

MFDC welder vs AC welders

MFDC welders deliver a highly stable direct current waveform, producing minimal power peaks and virtually no spatter during the welding process. This enhances the quality and reliability of welds, ensuring a superior finish on every time.

MFDC welders are not affected by parts' shape and material, eliminating the challenges of inductance loss often faced in traditional systems. This adaptability makes it a versatile choice for a varity of welding applications.

With an energy requirement of only two-thirds that of conventional AC welders, MFDC systems significantly reduce the demand on factory power grids. Their ability to maintain precise control over welding current, even during voltage fluctuations, underscores their efficiency.

MFDC welders boast a dramatically reduced weight—only one-third of the AC transformer. This portability is particularly advantageous for robotic welding systems, allowing for greater flexibility and ease of integration into automated environments.

Embracing a green approach, MFDC technology eliminates pollution associated with traditional power supplies. The ability to work in harmony with existing robot welding tooling control systems eliminates the need for separate power grids, contributing to a cleaner manufacturing process.

MFDC Discharge Curve

Applications

Industry applications

Automotive, electrical and general industry

Application material

Non-ferrous metals

High-temperature alloys

Low-carbon steel

Stainless steel

High-strength steel

Galvanized steel

Aluminum alloys

Welding result

No sticking of electrodes.

No cracks or bubbles in the weld nugget.

Video

HERON, make welding simple

HERON is a metal connection equipment manufacturer, a high-tech enterprise based on welding technology and integrating R&D and manufacturing.

QUICK LINK

PRODUCTS

Flush Self-Pierce Riveting

Industrialized Products

Welding Consumables And Accessories

Contact Person: Christina Liu
Tel: 86 20 87813325 / 86 20 87819588 / 86 20 87815075

Fax: 86 20 87813346

Email: info@heronwelder.com

Address: No.63 Xin Yi Road, Taiping Town, Conghua District, Guangzhou China

HERON is a metal connection equipment manufacturer, a high-tech enterprise based on welding technology and integrating R&D and manufacturing of automated production lines.

HERON, make joining simple