Hwashi Sink Welding Machine: Premium Strength Joints for Kitchenware Production
The Hwashi Stainless Steel Kitchen Utensil Sink Bowl Seam Welding Machine is a specialized automated solution engineered to deliver flawless, high-strength seams for stainless steel sink bowls—critical components in kitchen utensil manufacturing. Designed to address the unique challenges of welding thin-gauge stainless steel (0.8-2mm thickness), this machine combines precision engineering with intelligent control to redefine seam quality and production efficiency.
Application
At its core is the advanced seam welding technology, which utilizes high-frequency resistance welding (HFW) paired with a servo-driven welding wheel system. This ensures uniform heat distribution along the sink bowl's curved or straight seams, creating airtight, leakproof joints with a smooth, post-weld surface finish (Ra ≤ 0.8μm)—eliminating the need for time-consuming manual grinding or polishing. The machine's adaptive current control adjusts welding parameters in real time based on material variations (304/316 stainless steel) and seam length, guaranteeing consistent weld strength (shear strength ≥ 300MPa) that meets food-grade safety standards (FDA, LFGB).
Tailored for sink bowl geometries, the machine features a customizable clamping fixture with 360° rotational capability, accommodating various sink designs—from single-bowl to double-bowl configurations, deep or shallow profiles, and even sinks with integrated drain grooves. The fixture's precision positioning (±0.05mm repeatability) ensures seamless alignment of sink components before welding, minimizing gaps that could lead to weak points or leakage.
Technical Specifications
| Model |
WL-FS-AC75K |
WL-FS-MF75K |
WL-FS-MF100K |
| Input Voltage |
Three-phase 380V±10% 50Hz |
Three-phase 380V±10% 50Hz |
Three-phase 380V±10% 50Hz |
| Input Power |
75KVA |
75KVA |
100KVA |
| Rated Input Current |
115A |
115A |
150A |
| Rated Duty Cycle Rate |
50% |
50% |
50% |
| Max Secondary Floating Voltage |
DC9.75V |
DC9.75V |
DC11.6V |
| Secondary Max Short Circuit Current |
26500A |
26500A |
28000A |
| Welding Transformer Insulation Grade |
Grade F |
Grade F |
Grade F |
| Program Segment Time Adjustment Range |
0～9999SEC |
0～9999SEC |
0～9999SEC |
| Controller Heat Adjustment Range |
15%～99% |
15%～99% |
15%～99% |
| Upper Welding Wheel Diameter |
280mm |
| Lower Welding Wheel Diameter |
40mm |
| Welding Wheel Width |
3mm |
| Welding Wheel Rotating Speed |
800-4000mm/min (adjustable) |
| Upper Welding Wheel Throat Depth Distance |
400mm |
| Lower Welding Wheel Throat Depth Distance |
400mm |
| Upper and Lower Welding Wheel Distance |
50mm |
| Air Pressure |
0.6MPa |
| Gas Consumption |
10m³/h |
| Water Pressure |
0.2Mpa |
| Water Temperature |
10-20℃ |
| Cooling Water Consumption |
800L/H |
Technology Description
Seam welding is a form of permanent metal welding. When welding, welding pressure is applied between two welding wheels while the spinning welding wheel drives the weldment and electricity. The welding current creates local heating, forming successively overlapping welds to create continuous weld joints and achieve permanent welding. Applications include automotive and motorcycle fuel tanks, barrels such as cans, and sheet-formed artifacts such as wheels, mufflers, and radiators.
The machine adopts 75KVA/100K medium frequency inverter DC power source with a 50% duty cycle rate while welding output current is 26KA. The three-phase power supply, rectified by a special inverter, is converted into 1000Hz AC voltage and then transmitted to a medium frequency transformer where the current is rectified to supply DC welding current.
Key Features
- Intelligent microcomputer single piece controller with pure digital setting, online computer programming, LED digital display, stable performance, and convenient online program modification
- Intelligent microcomputer control welding system with automatic current compensation during voltage fluctuations to ensure welding stability
- Digital circuit control using components from world-renowned manufacturers for long-term operational stability
- Utilizes IXYS from West Germany and IR silicon controlled from United States for high precision, long operating life, and stable current control
- Transmission tile axis adopts latest mercury conductive technology from abroad with excellent transmission and conductivity performance
- Welding roll wheel uses alloy copper material from Japan with high rigidity and good conductivity
- Transformer employs high-purity silicon steel sheet from Japan with excellent magnetic and electrical conductivity, low electricity consumption, and stronger, more stable power
- Welding mold and machine connection uses mosaic connection for easy assembly and disassembly
- Available with AC pulse, secondary rectifying, and three-phase medium frequency welding power sources
Competitive Advantages
Industry Leadership: HWASHI is the leading brand in resistance welding industry in China for 20 years; Factory direct sale with competitive pricing
Customized Service: We design and develop welding machines according to your requirements as a flexible and capable supplier
Quality Assurance: Genuine products with excellent quality, 12 months warranty, ISO9001:2000 and China Compulsory Certification compliance, 8-10 years service life, 100% pre-delivery testing
Technical Support: 24-hour technical support by email with professional team serving as your technical consultant
Fast Delivery: Our company provides just-in-time delivery services
Customer Focus: Prompt response to customers with satisfaction as our primary goal
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