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Resistance Welding

Resistance welding is widely used in the manufacturing industry for joining metal sheets and components. With over 32 years of experience in Resistance Welding, Heron is committed to the development of high-tech joining technologies including, medium voltage capacitor discharge welding and medium frequency DC resistance welding. Our products cover best-in-class spot & press welders, AC welders, seam welders, butt welders at a competitive price.

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.
10KJ-120KJ Capacitor Discharge Resistance Welding Machine (Spot Welder, Projection Welder)
The power of our resistance welding machine is ranging from 10KJ to 120KJ.
The maximum short circuit current of our welding machine is ranging from 90KA to 1000KA.
At air pressure of 6bar, the welding pressure of our welder is ranging from 15KN to 240KN.
500J-8000J Capacitor Discharge Resistance Spot Welding and Projection Welding Machine
The power of our resistance welding machine is ranging from 500J to 8000J.
The maximum short circuit current of our welding machine is ranging from 14KA to 80KA.
At air pressure of 6bar, the welding pressure of our welder is ranging from 1240N to 15000N.
Capacitor Discharge Resistance Seam Welding Machine
The resistance welding machine power is 500J.
The maximum short circuit current of our welding machine is 14.6A.
At an air pressure of 6bar, the welding pressure of our welder is 240N.
The effective throat depth is 116.5mm.
50KVA-500KVA AC Resistance Welding Machine (Spot Welder, Projection Welder)
The power of our resistance welding machine is ranging from 50KVA to 500KVA.
The maximum short circuit current of our welding machine is ranging from 12KA to 76KA.
At air pressure of 6bar, the welding pressure of our welder is ranging from 2510N to 24000N.
25KVA-150KVA AC Resistance Welding Machine (Spot Welder, Projection Welder)
The power of our resistance welding machine is ranging from 25KVA to 150KVA.
The maximum short circuit current of our welding machine is ranging from 12KA to 34KA.
At air pressure of 6bar, the welding pressure of our welder is ranging from 2510N to 15000N.
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Resistance welding machines - metal connection solutions for various industries

Resistance welding is widely used in the manufacturing industry for joining metal sheets and components. With over 30 years of experience in resistance welding, Heron is committed to the development of high-tech joining technologies, including medium voltage capacitor discharge welding and medium frequency DC resistance welding. Our products cover best-in-class spot & projection welders, AC welders, seam welders, butt welders at a competitive price. Manufactured from standard modules, Heron resistance welding machines are assembled in a flexible manner to adapt to your application needs. 
Projection welding
Process flow

Projection welding is a form of resistance welding that utilizes projections to concentrate the current and welding force on a small area. This allows for more efficient welding with reduced energy consumption and enhanced weld strength. This welding process offers various competitive advantages as it guarantees high-quality outcomes at a cost-effective rate. 

Applications
Projection welding is employed for the purpose of joining nuts and studs onto automotive assemblies made of various steels, including high-strength steels, hot stamping steels, and galvanized steels. Projection welding can also be used for water heaters in appliance manufacturing. This welding method is especially well-suited for mass production.
Benefits of projection welding
01
Enhanced production
Simultaneous completion of multiple welds boosts production output.
02
Prolonged lifespan
Projection welding requires less heat and pressure, resulting in a prolonged lifespan of electrodes.
03
Versatile application
Suitable for a wide range of parts and components due to its adjustable multiple parameters.
04
Simplified operation
The process is user-friendly and utilizes automated equipment with simple parameter settings.
05
Clean finish
By minimizing heated area, projection welding reduces surface imperfections and achieves a refined appearance.
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Spot welding

Process flow

Spot welding is the most commonly employed form of resistance welding. This method involves passing an electrical current through electrodes attached to two separate metal surfaces pressed together. This process generates heat, which causes the pieces to melt and fuse together, resulting in the formation of spot welds at one or more specific locations. Consequently, this method necessitates a higher amount of current and pressure.

Applications
Spot welding is commonly employed to joining large components or thin sheet stamping parts. 
Benefits of spot welding
01
Efficient and user-friendly
Spot welding provides more expedient and simpler operation process, as it does not require special skills and reduce training requirements.
02
Cost-effective
With no flux or filler material require, spot welding significantly lowers material costs for welding operations.
03
Safer working conditions
Spot welding operations do not use an open flame to create joints, which decreases the likelihood of burns or fires.
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Seam welding
Process flow

Seam welding is a variant of spot welding, with the primary distinction being that the welding electrodes consist of motor-driven wheels instead of stationary rods. The disc-shaped electrode wheels generate heat, which in turn produces a continuous weld as the parts are fed between them, resulting in a rolling resistance weld or a non-hermetic seam weld.

Applications
Because of its capability to create gas or liquid-tight joins, this process is well suited for manufacturing items such as steel fuel tanks for vehicles, as well as tin cans, radiators and steel drums. Seam welding can also be found in various types of barrel and exhaust systems.
Benefits of seam welding
01
Eco-friendly
Clear welds with no gas formation or welding fume, resulting in clean and high-quality results.
02
Durability
No need to use filler materials to create the join, ensuring airtight and watertight seals for improved durability.
03
Automation
Seam welding can be fully automated, making it a highly repeatable process.
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Butt welding

Process flow

Butt welding is one of the simplest and adaptable forms of weld joint designs. The type of joint is create by placing two metal pieces end-to-end and subsequently welding them together along the joint. It is crucial to note that in a butt joint, the surfaces of the parts being joined are on the same plane and weld metal remains within the planes of these surfaces. Consequently, the parts are nearly parallel and do not overlap, unlike lap joints.

Applications
This can be used in a wide range of materials such as steels, stainless steel, aluminum alloys, nickel alloys or titanium. 
Benefits of butt welding
01
Enhanced strength
Achieves high strength through complete fusion, ensuring durable and reliable joints.
02
Distortion control
Ensures minimal distortion during the welding process, maintaining the structural integrity of the parts.
03
Economical
Butt welding provides an economical welding method without compromising on quality, making it a cost-effective option for budget-conscious projects.
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If you are interested in a quotation or opportunities to collaborate, please use the following enquiry form.
Our sales representative will contact you within 24 hours. Thank you for your interest in Heron.

HERON, make welding simple

CONTACT US

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, make joining simple
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