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.
Question 1: How effective is the intermediate frequency DC inverter spot welding machine in welding the connecting rod of car wipers?
Answer: The intermediate frequency DC inverter spot welding machine has a very good welding effect on the connecting rod of car wipers. Due to the use of high-frequency inverter technology, the welding heat is concentrated, the welding speed is fast, and the welding quality is high, which can meet the strength and accuracy requirements of automotive wiper connecting rods.
Question 2: How to weld the connecting rod of a car wiper with a spot welding machine?
Answer: When welding the connecting rod of the car wiper, the first step is to place the connecting rod on a dedicated fixture to ensure accurate positioning. Then, by adjusting the parameters of the spot welding machine, such as welding current, time, and pressure, the welding operation is carried out. After welding is completed, necessary inspections and repairs are carried out to ensure that the welding quality meets the requirements.
Question 3: What are the advantages of intermediate frequency DC inverter spot welding machines compared to traditional welding equipment?
Answer: Compared to traditional welding equipment, intermediate frequency DC inverter spot welding machines have advantages such as high welding efficiency, stable welding quality, small heat affected zone, and small deformation. At the same time, the device also has the characteristics of energy conservation, environmental protection, and easy operation.
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 |
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.
1,Can the welding parameters of the spot welding machine be saved and recalled?
Answer: Yes, our spot welding machine supports the saving and recalling of welding parameters. You can save commonly used welding parameter combinations and quickly recall them as needed to improve welding efficiency.
2,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.
3,When welding materials of different thicknesses, does the spot welding machine require electrode replacement?
Answer: Typically, when welding materials of different thicknesses, it may be necessary to adjust the electrode spacing or replace suitable electrodes. Our spot welding machine is designed to be flexible, allowing electrode adjustments and replacements according to the welding requirements of different workpieces' thicknesses.
4,
How to control welding deformation during the welding process of the spot welding machine?
Answer: Welding deformation is one of the common problems during the welding process of the spot welding machine. To control welding deformation, the following measures can be taken: Firstly, optimize welding parameters by selecting appropriate welding current, welding time, and electrode pressure to reduce heat input during the welding process. Secondly, arrange welding sequences and positions reasonably to minimize welding stress concentration. Additionally, preheating and post-heating methods can be used to improve the structure and properties of the welding joint, thus reducing welding deformation.
5,How to ensure the stability of welding quality during the welding process of the spot welding machine?
Answer: To ensure the stability of welding quality, the spot welding machine adopts advanced welding control systems and precise parameter adjustment mechanisms. By precisely controlling key parameters such as welding current, welding time, and welding pressure, the spot welding machine can stably output high-quality welding results. Additionally, regularly maintaining and servicing the equipment to ensure the integrity and cleanliness of the electrodes is also an important measure to ensure the stability of welding quality.
6,How is the accuracy and stability of the spot welding machine ensured?
Answer: Our spot welding machine adopts advanced control systems and precise mechanical transmission mechanisms to ensure welding process accuracy and stability. During the manufacturing process, we strictly adhere to quality control standards and conduct rigorous quality inspections to ensure the equipment's stability and reliability.
7,How to control noise generated during the welding process of the spot welding machine?
Answer: Noise generated during the welding process of the spot welding machine mainly comes from the contact between the electrode and the workpiece and the vibration generated when the current passes through. To control noise, the following measures can be taken: Firstly, choose welding equipment and power supply systems with low noise to reduce noise generation sources. Secondly, arrange the work area reasonably, placing the welding equipment in a place with good sound insulation to reduce noise transmission. Additionally, operators can wear noise-canceling earplugs or earmuffs to protect hearing health.
8,How is the cooling system of the spot welding machine maintained?
Answer: The cooling system of the spot welding machine is crucial for ensuring stable equipment operation. When maintaining the cooling system, the quantity and quality of the cooling liquid should be checked regularly to ensure it is sufficient and free from contamination. Additionally, clean the radiator of the cooling system to prevent dust and dirt from blocking the heat dissipation channels. If the cooling liquid becomes turbid or has an unusual odor, it should be replaced promptly.
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