Aluminum Radiator Straight Seam Welding Machine

 

 

A radiator straight seam welder is an automated welding machine specifically designed for manufacturing radiator cores. Its core task is to weld the metal tube wall (usually aluminum or copper) of the heat pipe at high speed and high precision along its length, forming a sealed straight seam, thereby ensuring the sealing and strength of the heat pipe.

 

 

Manual feeding→positioning and clamping of the workpiece→the head quickly walks to the starting point of the welding seam, and quickly drops→sends shielding gas→start arc→the welding torch walks left and right separately→reaches the set length→stops the arc→stops the protective gas→the head moves quickly Return to the starting point of the welding seam and raise it quickly at the same time→pneumatically flip→when in place, the welding torch quickly falls→sends shielding gas→start arc→the welding torch walks left and right→reaches the set length→retracts the arc→stops the shielding gas→the welding torch quickly lifts and moves quickly to the origin Position → Manual unloading, welding is over.

 

 

 

This direct seam welding machine is built for automotive radiator, intercooler, and charge air cooler (CAC) manufacturers - especially Tier 1/Tier 2 thermal system suppliers and OEM plants producing aluminum or copper-brass radiator cores. Manual or semi-manual welding often causes inconsistent penetration, porosity, undercut, coolant leakage, pressure-test failures, rework, and scrap. This machine solves those problems with programmable torch travel speed, welding current, and dwell time, producing uniform, leak-tight seams along the full radiator length. The result is fewer defects, less rework, higher throughput, and more stable radiator quality.

 

 

Applicable length	max 1000mm
Welding speed of torch	0.2-2m/min,Stepless
Welding gun return empty stroke speed	4m/min,Stepless
Pneumatic lifting distance of welding gun	200mm
Workpiece thrust cylinder stroke	100mm
The pressure and flow of the workpiece thrust cylinder are adjustable, and the left and right strokes are adjustable.
Adjustable height of the middle bracket	80mm(adjustable front and rear stroke)
Increase the left and right rough positioning for workpiece installation, adjustable according to the width of the workpiece.
Up and down adjustment of welding gun	100mm
Front and back adjustment of welding gun	100mm
Turning angle of worktable	180°

 

 

And the welding effect is shown in the figure below:

 

Yes - customization starts with your radiator, not our standard model. We customize the direct seam welding machine based on your radiator size, material, seam length, production capacity, and automation needs.

Before building, we review your drawings or samples and confirm:

• Radiator core size, thickness, and seam length
• Aluminum or copper-brass material
• Required welding speed and cycle time
• Manual, semi-automatic, or fully automatic loading
• PLC/HMI control, recipe storage, and line integration
• Fixtures, safety guards, fume extraction, and cooling

Then we configure the torch travel, welding current, dwell time, fixture, and control system to match your production. The result is a direct seam welding solution that fits your radiator line - not a standard machine you have to adapt.

We can also customize radiator core robotic welding system according to our customers' welding needs.

Send us your radiator specifications and target output, and we'll recommend the right customization.

 

 

Q: Can this machine produce leak-free welds?
A: The machine is designed for consistent, repeatable seam welding by controlling welding current, travel speed, and dwell time. For leak-critical radiators, we recommend sample welding and pressure testing before finalizing the configuration. Final performance depends on material, thickness, joint design, and fixture.

 

Q: How do you reduce porosity and cracking in aluminum radiator welding?
A: Aluminum welding requires stable parameters and proper process control. Send us your radiator sample or drawing, and we will validate the welding process and recommend the right configuration to minimize porosity and cracking.

 

Q: How is welding deformation controlled?
A: Welding heat input is controlled through programmable parameters, and the workpiece is held with a fixture designed for your radiator. The fixture and parameters are confirmed after reviewing your drawing or sample.

 

Q: What materials can the machine weld?
A: It is commonly used for aluminum, copper, carbon steel, stainless steel, and titanium. The suitable thickness depends on the material and joint design. Please send your specifications for confirmation.

 

Q: Can it weld long seams?
A: Yes, long seams can be handled, but the solution depends on seam length, material, and tolerance. For demanding applications, optional tracking or oscillation systems can be configured. We confirm this during process review.

 

Q: What is the welding speed and production capacity?
A: Speed and cycle time depend on radiator size, material, seam length, and loading method. After reviewing your part and target output, we will recommend a suitable configuration and estimate the cycle time.

 

 

Q: Do operators need specialized welding skills?
A: No. The machine is designed to reduce dependence on manual welding skill. Operators normally need basic training on loading, parameter selection, and daily checks.

 

Q: What information do you need for a customized solution?
A: Please provide radiator drawings or samples, material, thickness, seam length, annual volume or target cycle time, and automation requirements. With this information, we can recommend the right configuration.

 

 

Q: How long does customization take?
A: Customization typically includes drawing review, process validation, solution confirmation, manufacturing, factory testing, and on-site installation. Lead time depends on the customization level and is confirmed in the technical proposal.

 

 

We have always been committed with the service idea of customer-centric, supply Installation, adjustment, training and maintenance in pre-sales and after-sales service.

1. Pre-sales Service

Before signing contract, customers can get production plan, technical consultant and equipment suggestion and etc.

2. Training

Customers can get free technical training in supplier factory. Mainly training are as follow:

• Training for machine and controller operation
• Basic daily cleaning and maintenance for the machine
• Solutions for common hardware problems

3. Equipment Maintenance

• One year free maintenance, lifelong caring
• Free technical consultant
• Customer service responding in 2 hours

 

 

 

 

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