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%
| Parameter | Specification |
|---|---|
| Welding Power Source | Medium-Frequency Inverter DC (MFDC) |
| Input Phase | 3-Phase |
| Current Control Accuracy | ±1% |
| Weldable Material | SUS304 / SUS316L Stainless Steel |
| Material Thickness Range | 0.6 - 1.5 mm |
| Welding Speed | ≥ 0.5 m/min (continuously adjustable) |
| Upper Welding Wheel Diameter | 280 mm |
| Lower Welding Wheel Diameter | 40 mm |
| Welding Wheel Width | 3 mm |
| Welding Wheel Speed | 800 - 4,000 mm/min |
| Upper Wheel Throat Depth | 400 mm |
| Lower Wheel Throat Depth | 400 mm |
| Wheel Gap | 50 mm |
| Air Pressure Requirement | 0.6 MPa |
| Gas Consumption | 10 m³/h |
| Water Pressure | 0.2 MPa |
| Cooling Water Temp. | 10 - 20°C |
| Cooling Water Consumption | 800 L/h |
| Controller | Intelligent Microcomputer, LED Display, CNC Programmable |
| Heat Adjustment Range | 15% - 99% |
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