The Cooling-Thermal Automatic Welder is purpose-built for high-volume heat pipe manufacturing. Designed to handle pipe diameters from D3 to D8 and lengths from 70 to 500mm, it delivers consistent, precision welding at up to 550 pieces per hour — with wall thickness compatibility ranging from 0.1 to 0.3mm. Whether you're running a single line or scaling to full production capacity, this machine is engineered to keep pace.
Automatic welder Key Specifications
| Specification | Details |
| Voltage | 380V / 220V / 415V |
| Motor Power | 4 kW |
| Pipe Diameter | D3 – D8 |
| Pipe Length | 70 – 500 mm |
| Wall Thickness | 0.1 – 0.3 mm |
| Production Capacity | 550 pcs/hr |
| Operation Mode | Automatic / Fully Automatic |
| Machine Dimensions | 1,100 x 600 x 1,500 mm |
| Weight | 350 kg |
Why Choose Cooling-Thermal's Automatic Welder
| Cooling-Thermal Automatic Welder | Typical Market Alternative | |
| Production capacity | 550 pcs/hr | 300-400 pcs/hr |
| Wall thickness range | 0.1-0.3mm | Often limited to 0.2mm+ |
| Power compatibility | 380V / 220V / 415V | Single voltage only |
| Operation mode | Automatic + fully automatic | Semi-automatic common |
| Customization | OEM/ODM available | Standard spec only |
| Sample testing | Available before order | Rarely offered |
| After-sales support | Dedicated 5-person team | Limited |
| Line integration | Full production line available | Equipment only |
Beyond the specifications, the key difference is support. Cooling-Thermal designs, builds, and services every machine in-house from our Kunshan factory — the same team that has delivered complete heat pipe production lines to Foxconn, Nidec, and Furukawa Electric is behind every automatic welder we ship.
Why Weld Quality Determines Heat Pipe Reliability
The tail weld is the last barrier between the heat pipe's internal vacuum and the outside world. A pipe can pass every earlier station — degassing, water injection, wick sintering — and still fail in the field if the seal weld is inconsistent. A weld that looks acceptable visually can still carry a micro-leak too small to catch by eye, which is why weld parameters (current, duration, electrode pressure) are logged per pipe rather than checked by spot inspection alone. For a deeper look at why the step right before welding — secondary degassing — has to be tightly coupled to the seal weld with no exposure to atmosphere in between, see our process guide on the topic.
Where the Automatic Welder Fits in the Production Line
The automatic welder is positioned after vacuum degassing and working-fluid processing, and before final leak and performance testing — it is the step that locks in whatever vacuum integrity and fluid charge the earlier stations achieved. Downstream, helium leak testing and thermal performance testing are what actually catch a weak weld before it ships. For manufacturers who want degassing and tail welding combined into a single vacuum-continuous station rather than two separate machines, our automatic degassing and tail welding machine integrates both steps without breaking vacuum between them.
