Aluminum spot welding machine SMD-20T

Aluminum Spot Welder, Aluminum Sheet Spot Welder Brand: Shanghai Haojing Model: SMD-20T Rated Capacity: 50KVA Maximum Short-Circuit Current: 20KA External Power Supply: 380V/3φ Duty Cycle: 50% Maximum Working Pressure: 3.6KN Electrode Stroke: 50MM Cooling Water Flow Rate: 15L/MIN. Shanghai Haojing’s SMD-20T aluminum spot welder features fully digital control via a human-machine interface touchscreen for intuitive operation. Performance can be expanded through PC programming. Custom fixtures can be designed to accommodate diverse workpiece welding requirements, and automated special-purpose machines can be engineered to enhance production efficiency.
Product Overview:

1. Welding current approaches pure DC. With no significant peak current, the weld nugget expands steadily with minimal spatter, ensuring consistent weld quality and high thermal efficiency. Compared to AC welders, aluminum spot welders reduce welding current by 40%, significantly extending electrode lifespan.
2. Minimizes interference in secondary circuits with large open areas. Zhejiang Haojing Electromechanical’s aluminum spot welders use DC welding current, ensuring undisturbed operation even when magnetic materials are present in the secondary winding.
3. Response time is only 1/20th that of industrial frequency AC spot welders. Current rapidly reaches set values, enabling more precise parameter analysis and tighter weld quality control.
4. Three-phase load balancing achieves high power factor (around 0.9), enhancing energy efficiency. It demonstrates superior adaptability to grid fluctuations and voltage drops. Energy is partially stored by the inverter before being supplied to the load, replacing direct grid power delivery. In contrast, two-phase AC welders struggle to maintain balanced phase voltages during operation, exhibit low power factor (around 0.6), and three-phase AC welders often fail to achieve constant current output.
5. Aluminum spot welders accommodate diverse materials and dissimilar metal welding, such as aluminum alloys, stainless steel, and high-strength steel plates. Additionally, their weld quality for galvanized sheets and standard multilayer panels significantly surpasses that of conventional welding machines.
6. Precision machining employs CNC machine tools for component fabrication, ensuring reliability and dimensional accuracy.
7. Superior electrical performance structure featuring the advanced HJ-SMD controller, which delivers powerful functionality and upgrade capabilities.

Four Key Features of Haojing Welding Machines:

Haojing aluminum spot welders excel in stability, precision, energy efficiency, user-friendliness, and automation. Built upon German industrial technology and incorporating globally leading innovations like Siemens control systems and Taiwan’s Weintek operator interfaces, they lead the forefront of welding equipment R&D and manufacturing.
Wide Material Compatibility
Offers broader welding capabilities than AC welders, processing aluminum, aluminum alloys, copper, low-carbon steel, stainless steel, galvanized sheets, and more with exceptional adaptability.
Energy Efficiency
Consumes 30% less power than AC welders. Features balanced three-phase input, precise current output, and zero secondary circuit energy loss. Delivers high welding stability with minimal grid impact for superior energy savings.
User-Friendly Operation
Features a human-machine interface for precise, rapid, and comprehensive control and analysis of welding parameters. Performance can be expanded via PC programming, effectively boosting welding efficiency.
High Welding Efficiency
Achieves millisecond-level welding cycles, producing aesthetically pleasing surfaces that require no grinding. Significantly reduces labor costs while enhancing both productivity and quality.
Comparison Between Aluminum Spot Welders and AC Spot Welders:

1. Superior welding stability;
2. Over 40% energy savings with low operating costs;
3. Balanced three-phase power input achieving up to 95% power factor;
4. Reduced welding current and electrode pressure requirements;
5. Minimal inductive energy loss in secondary circuits;
6. Doubled electrode lifespan with reduced grinding time;
7. Substantially reduced installation costs for electrical systems and auxiliary facilities like water/air supply;
8. More precise, rapid, and comprehensive control/analysis of welding parameters;
9. Shorter welding cycles for improved productivity and weld quality;
10. Wider application range with superior performance on low-carbon steel, stainless steel, copper, aluminum, and galvanized sheet metal.