Thyristor Stud Welding Machine
Engineered for heavy steel structures and mega infrastructure. Delivering up to 3150A pure thyristor current to effortlessly master galvanized deck penetration welding for shear studs from Φ4mm to Φ30mm.
What is a Thyristor Stud Welding Machine, and Why Do Heavy Industries Rely on It?
A Thyristor Stud Welding Machine (also known as SCR – Silicon Controlled Rectifier Welder) is a heavy-duty industrial power source designed for continuous, high-strength arc stud welding. Unlike lightweight electronic inverters, a thyristor welder utilizes a massive, premium pure-copper transformer paired with robust phase-controlled rectifiers.
This classic, uncompromising engineering creates an exceptionally stable welding current with massive thermal capacity. It is explicitly built to deliver explosive, unyielding energy required to melt large-diameter shear connectors instantly, making it the bedrock of heavy infrastructure steel fabrications.
300A-3150A
Heavy-Duty Current Output
Delivers a continuous, high-capacity welding arc that never fluctuates. Seamlessly handles non-stop, intense production demands on large-scale engineering sites without thermal shutdown.
Ø4-Ø30 mm
Massive Diameter Range
Engineered to easily melt and secure ultra-thick shear studs and concrete anchors. Provides deep, flawless full-fusion penetration into heavy-gauge structural steel plates .
100% Steel
Deck Penetration Masters
Specifically optimized to instantly pierce through galvanized floor support plates and decking. Creates flawless, robust weld collars with zero failure rates for mega infrastructure applications.
Ideal Applications: Heavy Steel Structures • Bridge Construction • High-Rise Buildings • Shipyards & Marine Engineering • Galvanized Floor Decking
RSN SERIES
THYRISTOR STUD WELDING MACHINE (Ø4-30 mm)
RSN Series Thyristor Stud Welding Machine: Technical Specifications & Model Comparison
The RSN series features classic thyristor technology, renowned for its reliability and robust performance in heavy-duty welding environments . Specifically designed for large-scale projects such as bridges, steel structures, and floor support plates, this series excels in welding shear studs with diameters ranging from 4 mm to 30 mm . The table below compares the technical parameters of the RSN-1600, RSN-2000, RSN-2500, and RSN-3150 models to help you find the most cost-effective and powerful solution for your construction needs.
| Model | Welding Range | Welding Current | Rated Input Capacity | Net Weight |
|---|---|---|---|---|
| RSN-1600 | Φ4mm-Φ20mm | 300A-2000A | 65KW | 320kg |
| RSN-2000 | Φ4mm-Φ24mm | 300A-2000A | 80KW | 380kg |
| RSN-2500 | Φ4mm-Φ28mm | 300A-2500A | 100KW | 410kg |
| RSN-3150 | Φ4mm-Φ30mm | 300A-3150A | 120KW | 450kg |
Customized input voltages (220V, 240V, 415V, 440V, 460V, etc.) are available upon request to meet different international power standards.
RSN SERIES
CLASSIC THYRISTOR TECHNOLOGY FOR INDUSTRIAL POWERPure Thyristor Regulation
Utilizes classic pure thyristor regulation for current, ensuring a smooth, sturdy, and highly reliable welding process suitable for heavy-duty industrial applications.
Wide Welding Diameter Range
Specifically engineered for welding large equipment, supporting stud diameters from Φ4mm up to Φ30mm (model dependent) to meet diverse structural needs.
Industrial Voltage Compensation
Equipped with a grid voltage compensation function that automatically stabilizes welding parameters during voltage drops, maintaining consistent weld quality.
Rugged All-Weather Design
Features IP23 protection and specialized waterproofing for circuit boards, making the machine ideal for outdoor construction sites with high humidity.
Corrosion-Resistant Casing
Built with high-strength steel plate electrostatic spraying, providing robust machine casing with superior corrosion resistance for long-term durability.
Foolproof Welding Control
Parameters are fully preset on the panel for a foolproof device, enabling standard welders to become proficient in just one hour.
Industrial Applications for Stud Welding – Manufacturer Solutions
Widely used in heavy construction, steel decking, shipbuilding, bridges, and mega infrastructure projects. Delivering strong, stable, and highly reliable stud welding performance under the most demanding industrial environments.
The backbone of modern high-rise commercial buildings and industrial workshops. Engineered to deliver massive current for securing large-diameter shear studs onto heavy structural steel columns and cores, ensuring unyielding structural integrity under ultimate loads.
Explicitly built to withstand the punishing environments of highway and railway bridge construction sites. Effortlessly handles continuous, non-stop welding of concrete anchors and heavy shear connectors (up to Φ30 mm) on massive steel girders and piers.
Engineered to tackle the thickest steel plates in marine environments. Provides deep, full-fusion penetration required for shipbuilding, offshore oil platforms, and dock structures, delivering impeccable corrosion-resistant weld joints that survive severe ocean conditions.
Trusted by heavy machinery manufacturers and military defense contractors. Ideal for high-stress applications such as armored vehicle construction, large mining equipment frames, and boiler manufacturing where zero weld failure is a non-negotiable standard.
Overcoming Core Construction Risks with ZOC RSN Heavy-Duty Thyristor Stud Welders
Severe Current Drops, Shallow Penetration, and Costly Bend Test Failures
Traditional small welders or standard inverters suffer from severe amperage drops when continuously welding large shear connectors (Φ22 mm – Φ30 mm). This results in a shallow weld pool, brittle weld collars, and catastrophic failures during destructive site inspections.
Unbreakable Full-Fusion Penetration & 100% Destructive Test Pass Rates
Driven by a massive pure-copper transformer and industrial-grade silicon controlled rectifiers, the RSN series maintains a relentless current output up to 3150 A. It ensures absolute, deep arc penetration into heavy steel plates, delivering perfect weld collars every time.
Unstable Onsite Generators, Constant Error Codes, and Voltage-Induced Burnouts
Remote megaprojects rely heavily on diesel generators. Severe voltage fluctuations and sudden grid drops cause delicate digital or lightweight welders to frequently trigger error codes, shut down, or suffer expensive PCB failures.
Heavy-Duty Grid Voltage Compensation & All-Weather Onsite Reliability
Our robust analog SCR control circuit features the advanced automatic grid compensation function. Even under severe field voltage fluctuations, it automatically stabilizes welding parameters to keep the arc uniform while protecting internal components from severe grid spikes.
Weak Bonds, Heavy Spatter, and Unstable Arcs through Galvanized Decks
Welding through thick galvanized floor support plates or steel decks is a massive challenge for ordinary welders. They fail to instantly pierce the zinc layer, leading to severe arc blowouts, low penetration, and weak, unsafe joints.
Flawless Galvanized Deck Penetration Circuit & Rapid Full-Strength Fusion
Specifically optimized for steel structure contractors, the RSN series delivers an explosive initial arc that instantly vaporizes galvanized coatings. It effortlessly pierces through the decking and creates a high-strength, full-fusion molecular bond with the structural beam beneath in a fraction of a second.
Quick Answer
RSN Series Stud Welding FAQs
Get technical answers regarding our RSN-1600 to RSN-3150 thyristor stud welding machines. Learn about their pure thyristor technology, welding capabilities, and industrial-grade protection features.
The RSN series utilizes classic pure thyristor regulation for current, ensuring a smooth, sturdy, and highly reliable welding process specifically designed for heavy-duty industrial applications.
Depending on the model, the RSN series supports stud diameters ranging from Φ4mm up to Φ30mm, making it ideal for large equipment and structural welding.
The machines are equipped with a voltage stability compensation function that automatically stabilizes welding parameters during voltage drops to maintain consistent quality.
Yes, the machines feature IP23 protection and specialized waterproofing for circuit boards, making them ideal for outdoor environments with high humidity.
Yes, featuring foolproof welding control, parameters are fully preset on the panel, allowing standard welders to become proficient in just one hour.
Ready to Optimize Your Stud Welding Efficiency? Get a Direct Factory Quote.
Share your project details, heavy steel structures, base materials, or required stud diameters (Φ4 – Φ30 mm) with us. Our engineering and sales team will review your inquiry and respond with professional technical support and clear commercial solutions.
All inquiries are handled confidentially and answered within 12–24 hours.