High-Strength Joints for Kitchen Utensil Manufacturing Hwashi Sink Welding

High-Strength Joints for Kitchen Utensil Manufacturing Hwashi Sink Welding Machine

APPLICATION

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.

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.

SPECIFICATION

DESCRIPTION

Seam welding is a kind of form permanent metal welding.When welding, welding pressure, between two welding wheel spin welding wheel drives the weldment and electricity, welding current by welding and local heating, forming successively overlapping to form a continuous weld joint and realize the permanent welding.Light reaction for casing, such as automobile, motorcycle fuel tank; Barrel, such as cans, and sheet forming artifacts, such as wheels, seam welding of muffler, radiator, etc.

Adopt 75KVA/100K medium frequency inverter DC power source. Duty cycle rate is 50% while welding output current is 26KA. The three-phase power supply, through rectified by a special inverter, is converted into 1000Hz AC voltage and then is transmitted to a medium frequency transformer so the current is rectified in order to supply DC welding current.

FEATURE

1. Adopt intelligent microcomputer single piece controller which achieve pure digital setting. Online computer programming, LED digital display, stable performance, convenient modification of the program online.

2. Adopt intelligent microcomputer control welding system. When the voltage fluctuates, it will compensate the welding current automatically to ensure the stability of welding.

3. Adopt digital circuit control; select the components from famous factories in the world to ensure the equipment could operate steadily in the long run.

4. Adopt from West Germany, IXYS and IR silicon controlled from United States. High precision, long operating life, achieve high stability control of the magnitude of current.

5. The transmission tile axis adopts the latest mercury conductive technology from abroad. State-of –the-art technology with good performance in transmission and conductivity.

6. Welding roll wheel adopts the alloy copper material from Japan. High rigidity, good conductivity.

7. The transformer adopts the high pure silicon steel sheet from Japan, good performance in magnet and electricity conductivity. Low consumption of electricity. Stronger and more stable power.

8. Welding mold and the connection of the whole machine uses the mosaic connection. Easy to be assembled and disassembled.

9. AC pulse, secondary rectifying and three-phase medium frequency type of welding power source are available.

COMPETITIVE ADVANTAGE

1. HWASHI is the leading brand in resistance welding industry in China for 20 years; Factory direct sale, competitive price.

2. Customized Service: We can help to design and develop the welding machine according to your requirement. We are flexible and capable Supplier.

3. Genuine Product with Excellent Quality: 12 months warranty. Our machines are strictly complied with ISO9001:2000 and China Compulsory Certification. Most of our machines enjoy 8-10 years service life. 100% guarantee test before delivery.

4. After Sales Service and Technical Assistance: 24 hours technical support by email. Our professional team is always here willing to be your technical consultant.

5. Quick Delivery: Our company provides just-in-time delivery.

6. Prompt Response to Customers: Your satisfaction is the goal we pursue.