PDKJ, BORN FOR METAL WELDIN
High Power ▪ Intermediate Frequency ▪ DC output current
Intermediate Frequency Inverter DC Spot (Convex) Welder
DTB-80 DTB-160 DTB-240 DTB-280 DTB-340 DTB-450
Energy saving, power saving, high efficiency, low operating cost, and high welding quality.
Product overview: The medium frequency inverter DC spot welding machine converts the power frequency (50Hz) AC to the medium frequency (1000Hz) DC output. The time resolution is higher than that of the power frequency, the control accuracy is also improved, and the output current is not affected by the change of the secondary output circuit. It has high thermal efficiency, large output power rate and better welding quality. Compared with the traditional power frequency welding machine, inverter medium frequency DC welding will be efficient and energy-saving. It is a technological revolution breakthrough in the field of resistance welding.
Welding Advantages of PDKJ Intermediate Frequency Inverter DC Spot Welder
1. Easy to operate
No skill training required, easy to operate, and easy to master for beginners.
2. Design life 20 years
It is designed for the lifespan of 20 years, with over 100000 hours of intensive work and aging testing in industrial laboratories.
3. Good quality
The surface of the welding spot has few oxidation and deformation, even without any marks, and the welding is firm and has good quality.
4.Widely used
Metal cabinets, automotive components, fasteners, electronic components, instruments and meters, battery spot welding, hardware spot welding, electrical switches, terminal wires, wire mesh, mesh baskets, etc.
5. Fast welding speed
High power, fast dotting speed, short time consumption, high welding efficiency.
6. Customized
Can be customized fixtures, electrode arms, electrode holders, and electrode heads of different sizes for different product work-pieces, and can customize highly automated welding equipment and production lines.
Parameters of PDKJ Intermediate Frequency Inverter DC Spot Welder (1)
| parameter |
DTB-80 |
DTB-160 |
DTB-240 |
| Rated capacity |
80KVA |
160KVA |
240KVA |
| Input power |
3 φ 380V |
3 φ 380V |
3 φ 380V |
| short-circuit current |
25KA |
35KA |
50KA |
| Load duration |
20% |
20% |
20% |
| control mode |
Primary / secondary constant current |
Primary / secondary constant current |
Primary / secondary constant current |
| Inverter frequency |
1000HZ |
1000HZ |
1000HZ |
| Arm extension size |
500 × 350mm |
500 × 350mm |
500 × 350mm |
| press |
6000N |
6000N |
12000N |
| Electrode stroke |
80mm |
80mm |
100mm |
| Cooling water flow |
12L/min |
12L/min |
14L/min |
| Welding capacity /Al. plate |
2.0+2.0mm |
2.5+2.5mm |
3.0+3.0mm |
| Welding capacity / carbon steel |
2.5+2.5mm |
3.0+3.0mm |
4.0+4.0mm |
| Electrode arm size |
φ 59x173mm |
φ 59x173mm |
φ 74x195mm |
| Electrode holder size |
φ 24.6 × 180mm |
φ 24.6 × 180mm |
φ 31.6 × 250mm |
| Electrode head size |
φ 16x50mm |
φ 16x50mm |
φ 20x60mm |
| weight |
336kg |
384kg |
733kg |
| Overall dimension |
1180*750*1830mm |
1180*750*1830mm |
1205*870*2140mm |
| parameter |
DTB-280 |
DTB-340 |
DTB-450 |
| Rated capacity |
280KVA |
340KVA |
450KVA |
| Input power |
3 φ 380V |
3 φ 380V |
3 φ 380V |
| short-circuit current |
65KA |
80KA |
100KA |
| Load duration |
20% |
20% |
20% |
| control mode |
Primary / secondary constant current |
Primary / secondary constant current |
Primary / secondary constant current |
| Inverter frequency |
1000HZ |
1000HZ |
1000HZ |
| Arm extension size |
500 × 350mm |
500 × 350mm |
500 × 350mm |
| press |
12000N |
12000N |
12000N |
| Electrode stroke |
100mm |
100mm |
100mm |
| Cooling water flow |
14L/min |
16L/min |
20L/min |
| Welding capacity /Al. plate |
3.5+3.5mm |
4.0+4.0mm |
5.0+5.0mm |
| Welding capacity / carbon steel |
4.5+4.5mm |
5.0+5.0mm |
6.0+6.0mm |
| Electrode arm size |
φ 74x195mm |
φ 74x195mm |
φ 74x195mm |
| Electrode holder size |
φ 31.6 × 250mm |
φ 31.6 × 250mm |
φ 31.6 × 250mm |
| Electrode head size |
φ 20x60mm |
φ 20x60mm |
φ 20x60mm |
| weight |
820kg |
900kg |
980kg |
| Overall dimension |
1205*870*2140mm |
1205*870*2140mm |
1205*870*2140mm |
Question 1: What are the advantages of spot welding machines for welding hardware sheet metal?
Answer: The advantages of spot welding machines for welding hardware sheet metal mainly lie in fast welding speed, high strength, good sealing, and a small heat affected zone during the welding process, which is less prone to deformation or cracking. In addition, spot welding machines are easy to operate and suitable for large-scale automated production.
Question 2: Is the spot welding machine that easy to use?
Answer: Spot welding machines are indeed very useful in welding hardware sheet metal. It not only enables efficient and high-quality welding, but also has the advantages of easy operation and high reliability. Of course, the specific effectiveness of use still needs to be evaluated based on actual application scenarios and welding requirements.
Characteristics of PDKJ Intermediate Frequency Inverter DC Spot Welder
1. PDKJ MFDC Controller
The intermediate frequency welding controller and current closed-loop control can control the actual welding current at high speed. The output current is DC, and the current is smooth, the inductance reactance is zero. The working frequency is 1000Hz, and the time control accuracy is 1ms. The welding program can achieve multiple welding functions such as preheating, welding, and tempering to achieve complex welding functions. Humanized design, can save multiple welding presets.
2.LCD touch screen
The interface is simple and beautiful, and the operation is simple. Multi language switching between Chinese and English, with clear welding parameters at a glance. Cooperate with preset functions to achieve fast welding.
3. Water cooling circulation system
Transparent and intuitive water flow meter for easy observation and adjustment of cooling water flow. PDKJ customized anti-corrosion and anti-aging soft water pipes have a long service life and prevent water leakage accidents. Stable and appropriate temperature can improve welding quality and speed.
4. Thickened and stable body design
The body is designed with a high-strength thickened steel plate mechanical structure, which is stable and rigid, ensuring that the body does not vibrate during welding, and large welded work-pieces do not shake. The high-strength corrosion-resistant nano coating body can ensure machine quality and ultra long service life. And it won the Red Dot, known as the "beautiful spot welder".
5. Pure copper transformer
The transformer of PDKJ is made of pure copper for both primary and secondary poles, with a high conductivity magnetic core and high-quality epoxy resin poured inside. It has good insulation performance and stable performance, and is packaged in a stainless steel shell, with a compact and beautiful appearance. The rectifier component adopts high-power ABB diodes, with stable performance and high efficiency, making it the most reliable heart of PDKJ spot welding machine.
6. Precision and flexible welding platform
The welding platform adopts high conductivity brass material with the copper content of 85%, integrated electrode voltage mechanism, short gas path, compact structure, fast reaction speed, and more convenient installation and maintenance. The stroke between electrodes is adjustable, which can greatly improve the welding speed. Internally, it adopts water-cooled circulation for heat dissipation, and can quickly replace welding fixtures and electrode heads.
7. R&D Pneumatic system
The seventh generation pressure stabilizing cylinder developed specifically for welding has fast response speed, high pressure resistance, and long service life, meeting the needs of high-speed welding. The cylinder directional valve adopts SMC/Airtag triple body, with fast response speed and large flow rate, meeting the requirements of high-speed management.
8. Safe and reliable circuit system
The body comes with an LS air switch, and the circuit design fully complies with the humidity breakdown voltage standard for electrical equipment air gaps. The body is equipped with an emergency stop button. All electrical designs strictly comply with safety standards from China, the European Union, and North America.
Cooling component of spot welding machine
Stainless steel water tank and water pump (optional)
Large capacity water tank, stainless steel shell for heat dissipation, combined with high-power water pump, using room temperature water circulation cooling. This standard cooling component can meet welding operations with general strength. Maintaining the spot welding machine at the optimal working temperature can improve welding quality and accuracy, and extend the service life of the machine. It's recommended to use spot projection welding machine with power less than 160KVA for optional.
When the temperature is below 0ºC, please use antifreeze.
Industrial grade chiller (optional)
1.Vertical top air outlet design, easy installation and maintenance.
2.High quality brand refrigeration components, with a control accuracy of ± 1.0 ºC to ± 3.0 ºC;
3.Stainless steel multi-stage centrifugal pump and stainless steel water tank, PVC connection material, no worry of rust;
4.Multiple alarm protection functions and providing passive signal output;
5.Independently developed and produced bilingual intelligent temperature controllers in Chinese and English, with various settings and fault prompt functions, making operation simple and convenient;
6.The pure water filtration protection device ensures the safe operation of the equipment;
This advanced cooling component can meet ultra-high strength welding work. Maintaining the spot welding machine at the optimal working temperature can improve welding quality and accuracy, and extend the service life of the machine. It's recommended to use 170KVA spot projection welding machine for optional.
When the temperature is below 0 ºC, please use antifreeze.
Welding Automation and Non-standard Customized welding equipment
Since its establishment 18 years ago, PDKJ has designed and completed numerous cases of welding automation and production lines. It is a leading enterprise in automation technology in Dongguan, focusing on automatic welding in the fields of laser welding and Electric resistance welding. More than 3000 high-end users around the world have witnessed the common use.
Part of classic automation cases of PDKJ:
Anzhao Oil Heater Production Line, BYD Copper Wire Terminal Welding Machine, Leite Automobile Radiator Aluminum Parts Spot Welding Machine, Feng's Wire Mesh Welding Machine, Hettich Slide Rail Welding Machine, Qixin Side Furnace Medium Frequency Welding Machine, Huayangtong Door Plate Code Reinforcement Welding Machine, CRRC Copper Wire Welding Machine, Chongqing Linglong Small Chassis Automation Welding Machine, Nanjing Qiangli Laser Automation Production Line, etc.
Q1: What is the quality of the welds achieved when using a vertical spot welder for enclosure assembly?
A1: The quality of welds achieved when using a vertical spot welder for enclosure assembly is characterized by:
- Strength and reliability: Welds exhibit high tensile strength, good ductility, and excellent fatigue resistance, ensuring robust connections.
- Consistency: Reproducible welds with uniform size, shape, and penetration depth contribute to predictable structural integrity.
Q2: How does a vertical spot welder perform in the context of welding enclosures?
A2: A vertical spot welder performs well in the context of welding enclosures due to its:
- Efficiency: Rapid heat generation and localized heating minimize energy consumption and reduce overall welding times.
- Accuracy: Precise control over welding parameters ensures consistent, high-quality welds with minimal distortion or thermal damage to surrounding material.
1,What is the maintenance and maintenance cycle of the spot welding machine?
Answer: The maintenance and maintenance cycle of the spot welding machine vary depending on usage. Generally, we recommend regular maintenance of the equipment, such as cleaning the equipment surface and checking electrical connections. For equipment repairs, if the equipment experiences malfunctions or abnormalities, please contact our after-sales service team promptly, and we will provide timely repair support.
2,What is the cooling system of the spot welding machine? How is the equipment's stable operation ensured?
Answer: Our spot welding machine is equipped with an efficient cooling system, which ensures stable temperature control during prolonged operation through circulating cooling water or fan heat dissipation. This helps reduce heat loss and enhances welding quality and equipment reliability.
3,How to select suitable electrode materials for the spot welding machine?
Answer: Selecting suitable electrode materials is crucial for welding quality and stability of the spot welding machine. Common electrode materials include copper, copper alloys, tungsten, etc. When choosing electrode materials, factors such as the type, thickness, and properties of the welding material, as well as temperature, pressure, and current during the welding process should be considered. Typically, copper or copper alloys can be chosen as electrode materials for welding materials with low melting points, while tungsten or other materials resistant to high temperatures may be required for welding materials with high melting points or special properties.
4,How to maintain and upkeep the spot welding machine?
Answer: Maintenance and upkeep of the spot welding machine are crucial for its normal operation and prolonged service life. It is recommended to regularly clean the equipment, removing dirt and oxides from welding electrodes and the welding area. Also, check the power lines and connection circuits of the equipment for integrity to ensure the normal operation of the electrical system. Additionally, regular inspections of mechanical components and transmission mechanisms should be conducted to ensure their normal operation and accuracy.
5,Does the spot welding machine support integration into automated production lines?
Answer: Yes, our spot welding machine features programming and debugging capabilities for automated welding. Users can set welding parameters and interfaces through programming according to specific welding requirements to achieve automated welding. Additionally, the equipment provides debugging functions, allowing users to adjust and optimize welding programs easily. This greatly enhances production efficiency and operational convenience, meeting your needs for automated production. Our spot welding machine can be integrated with automated production lines to achieve automated welding. We provide interfaces with various automation equipment and systems for easy integration and debugging, enhancing production efficiency and welding quality. We can offer customized interface services tailored to your specific requirements to ensure smooth integration and stable operation of the equipment.
6,Is the operation interface of the spot welding machine user-friendly and easy to use?
Answer: Our spot welding machine features a user-friendly operation interface designed with clear and intuitive icons and buttons, making it easy for even first-time users to quickly get started. Additionally, we provide detailed operation manuals and video tutorials to help users better master the operation skills of the equipment.
7,Does the spot welding machine support simultaneous multi-point welding?
Answer: Yes, some advanced models of spot welding machines support simultaneous multi-point welding. By configuring multiple welding heads and control systems, it is possible to achieve simultaneous welding of multiple welding points, thereby improving production efficiency and welding quality. However, please note that multi-point welding requires precise control and parameter adjustment to ensure consistent welding results for each welding point.
8,What should be paid attention to when the spot welding machine welds thin sheet materials?
Answer: When welding thin sheet materials, the spot welding machine needs to pay special attention to controlling the welding pressure and welding time to avoid over-welding, which may cause material deformation or burn-through. It is recommended to use smaller welding currents and shorter welding times, and adjust the welding pressure appropriately to achieve good welding results.
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