Automatic Seam Welding Machine for 0.6-1.5mm Stainless Steel Sinks with Medium-Frequency Inverter DC and Leak Rate Below 0.1%

The Hwashi Automatic Stainless Steel Sink Rolling Seam Welding Machine is a purpose-built resistance seam welding solution designed for high-volume kitchen sink manufacturing. Engineered with 25 years of resistance welding expertise, this machine delivers consistent, leak-proof welds on 0.6-1.5mm stainless steel sheets — eliminating the quality inconsistencies and high labor costs associated with manual TIG welding.

Backed by two invention patents (2015 Sink Welding Special Machine Patent & CN112872568A "Automatic Sink Welding Machine", 2020), the system is trusted by leading OEM/ODM kitchenware manufacturers worldwide and exported to over 80 countries.

• Current control accuracy: ±1% — precise heat input prevents warping on thin-gauge stainless steel
• Power factor: 95% (vs. 60-70% for conventional AC machines) — 30%+ energy savings
• Dynamic millisecond-level response; electrode life extended by 2× compared to traditional systems
• Narrow heat-affected zone ensures minimal deformation on 0.6-1.5mm SUS304/316L sheets

• Integrated automatic positioning, clamping, and continuous rolling seam welding
• Single-operator production line — reduces labor headcount by up to 60%
• PLC control system with HD touch screen: real-time parameter monitoring, storage, and traceability
• Supports pulse, segmented heating, and multi-mode welding programs

• Purpose-built fixtures matched to your sink dimensions and weld trajectories
• Emergency stop, safety light curtains, and overload protection — compliant with national machinery safety standards
• Welding parameters fully programmable and recallable for quick changeover between sink models

• Weld seam height deviation controlled within ± 0.2mm
• Leak rate reduced to below 0.1% (vs. industry average 3-5% with manual welding)
• Smooth, flat surface — 70%+ reduction in post-weld grinding and polishing workload
• Weld seam pass rate exceeds 99.5%