1. What is Q235 steel and why is it used in barrel seam welding?
Q235 steel is a standard carbon structural steel widely used in Asia (equivalent to ASTM A36). It offers excellent weldability, good ductility, and cost efficiency, making it ideal for pressure vessel fabrication and seam welding machine applications.
2. What are the applicable standards for seam weld quality?
Leading machines comply with ISO 3834 (Welding Quality Management), ANSI/AWS D1.1 (Structural Welding), and EN ISO 5817 (Quality levels for weld imperfections). All machines should provide traceable certificates.
3. What is the typical service life of seam welding electrodes?
CrZr (chromium-zirconium) copper alloy electrodes last up to 45,000m of weld line with proper maintenance (per EN12163), outperforming standard copper by 130%.
4. How does PLC control improve welding accuracy?
A modern PLC (Programmable Logic Controller) controls welding current, roller speed, and barrel rotation with closed-loop feedback, ensuring process repeatability (±2%) for every cycle. Touch HMI allows real-time parameter adjustments.
5. How is corrosion resistance tested for welded steel barrels?
Corrosion resistance is verified through standardized 1,000-hour neutral salt spray (ASTM B117) and, where required, chemical soaking and cyclic humidity testing according to client specification.
6. Are there specific installation requirements?
Yes. Installation requires a level, vibration-free foundation, three-phase 380V/50Hz (customizable voltage), 19L/min industrial water cooling, and adequate fume extraction—per ISO 14713.
7. What post-sale support and documentation are provided?
Comprehensive documentation (user manual, process chart, electrical diagram) in English; video training library; certification dossier (CE, ISO, SGS report); and lifetime technical FAQ hotline.