AT8

Product Introduction

The AT8 automated tube-to-tubesheet welding machine is primarily designed for welding small-diameter tubes ranging from 6 mm to 32 mm. It must be operated in conjunction with a cross-gantry mounting frame. The system supports various tube-to-tubesheet configurations—specifically recessed, protruding, and flush—and features a torch angle adjustment range of -10° to +30°. Additionally, an integrated circulating water-cooling system ensures the machine's capability for continuous, long-duration operation.

Product Advantage

1. Stable Welding Quality: Featuring an improved welding head and system components, the equipment offers exceptional durability and delivers superior weld quality.

2. Adaptability: Capable of meeting highly specialized welding requirements (e.g., specific fillet welds).

3. Customization: Flexible chucks or positioning fixtures can be customized and selected to suit specific operational needs.

4. Data Traceability: Welding parameters—including current, time, and temperature—are automatically recorded, ensuring full compliance with regulations for special equipment.

5. Continuous Operation: Equipped with a circulating water-cooling system, the unit supports prolonged, continuous welding sessions; this makes it ideal for high-volume factory production and uninterrupted operations, significantly reducing the time required for each individual weld pass.

6. Quality Control: Welding current, voltage, and travel speed are digitally controlled and maintained at constant levels, thereby eliminating defects—such as porosity and lack of fusion—that typically result from human factors like hand tremors or fatigue during manual welding. Consequently, the first-pass acceptance rate for non-destructive testing (NDT) far exceeds that of manual welding.

Technical Parameters

Product Uses

1. Reactor Industry: Automated tube-sheet welding meets stringent requirements such as high-temperature resistance, leak-proof integrity, the handling of thick tube-sheets and dense tube bundles, and high-volume production.

2. HVAC & Refrigeration Industry: Tailored to client needs, this solution delivers high welding efficiency, excellent consistency, superior heat dissipation, exceptional cleanliness, and precise positioning.

3. Energy Storage Liquid Cooling Industry: Designed for the tube-sheets of large-scale liquid cooling units, automated TIG welding systems are ideal for high-volume production, offering robust reliability, stable weld quality, superior welding results, and prioritized heat dissipation efficiency.

Product Operate Guide

1. Power-on inspection: Connect the power, water cooling, and argon; degrease and clean the heat exchanger tube ends; assemble and secure the tube and tube sheet tightly.

2. Install the clamping machine head: Insert the AT8 machine head into the tube and lock it; adjust the welding gun tilt angle to 0–30°, and keep the tungsten electrode 0.6–0.9 mm from the weld seam.

3. Gas purging with argon: Pass external protective argon, pre-fill gas for 25–40 seconds to expel air.

4. Parameter setting: Select the AT8 model on the power supply, set current and rotation speed according to tube diameter and wall thickness, enable wire feeding as needed, and run a test rotation.

5. Automatic welding: Start with remote control; the welding gun rotates 360° around the tube to complete tube-to-tube sheet corner and flush welding.

6. Finishing and disassembly: After welding, delay to maintain gas protection while cooling, turn off gas, stop water, and cut off power; loosen clamp and remove the machine head.

Product Video