Pdkj Spot Welder Aluminum, Galvanized Sheet, Carbon Steel and Other Metal Welding

• Control: Manual
• Cooling Way: Water Cooling
• Style: Fixed
• Model NO.: DTB-80/160/240/280/340/450
• Electrode Stroke: Vertical
• Electric Current: DC
• Transmission: Pneumatic
• Conductive Way: Copper
• Welding Spot Number: Single
• Type: Universal
• Applicable Material: All Metal Materials: Stainless Steel; Galv. Sheet
• Key Selling Points: Firm Welding, High Efficiency, Power Saving
• Cooling Water Flow: 20L/Min
• Input Power: 3 Phase; 380V
• Maximum Short Circuit Current: 25ka/35ka/50ka/65ka/80ka/100ka
• Transport Package: Wooden Case
• Specification: 1200*870*2210mm
• Trademark: PDKJ
• Origin: China
• HS Code: 8515809090
• Production Capacity: 100 Unit Per Month
• Package Size: 139.00cm * 104.00cm * 221.00cm
• Package Gross Weight: 1056.000kg

Product Description

 

Product Description

 

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: What should be considered when using a medium-frequency inverter DC spot welder for welding enclosures?

When employing a medium-frequency inverter DC spot welder for welding enclosures, the following factors should be taken into account:

• Material Compatibility: Ensure that the welder is suitable for the specific alloy composition and thickness of the enclosure material, as different aluminum alloys may require distinct welding parameters.
• Preparation: Thoroughly clean and degrease the surfaces to be welded, removing any oxide layers or contaminants that could compromise weld quality. Proper edge preparation, such as chamfering or V-grooving, may also be necessary.

• Question 2: What welding process is typically used for enclosures?

  The most commonly employed welding processes for enclosures include:

• Tungsten Inert Gas (TIG) Welding: Provides excellent control over heat input, making it suitable for thin and delicate aluminum components, as well as for producing aesthetically pleasing, high-quality welds.
• Gas Metal Arc Welding (GMAW/MIG): Offers higher deposition rates and is more suitable for thicker materials or higher-volume production, particularly when using pulse welding modes for better control over heat input and spatter reduction.
• Friction Stir Welding (FSW): A solid-state joining process ideal for large, thick-section aluminum enclosures, as it produces strong, defect-free joints with minimal distortion and no need for filler material.

 

Product Parameters

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

Detailed Photos

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.

Usage on site

Q1: What is the quality of the welds produced by a vertical spot welder when welding enclosures?

Answer: The quality of welds produced by a vertical spot welder when welding enclosures 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 well does a vertical spot welder perform when welding enclosures?

Answer: A vertical spot welder performs well when 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.

Packaging & Shipping

Our team

Patent certificate

FAQ

1,Do spot welding machines have safety protection measures?
Answer: Yes, our spot welding machines have comprehensive safety protection measures. The equipment incorporates various safety mechanisms such as overload protection and overheat protection, ensuring that power can be cut off promptly in case of abnormal situations to protect the safety of operators and equipment.

2,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.

3,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.

4,
How does the spot welding machine adapt to the welding requirements of different materials?

Answer: The spot welding machine can adapt to the welding requirements of different materials by adjusting welding parameters and selecting appropriate welding electrodes. Since different materials have different thermal conductivity, melting points, etc., parameter adjustments need to be made according to the material characteristics. Our spot welding machine has flexible parameter setting functions, allowing customization adjustments based on the specific requirements of customers to meet the welding requirements of different materials.


5,What are the special requirements when welding stainless steel with the spot welding machine?

Answer: When welding stainless steel with the spot welding machine, special attention should be paid due to the high thermal conductivity and low resistivity of stainless steel. Several points to note include: Firstly, select appropriate welding parameters, such as appropriately increasing welding current and welding pressure, to ensure fusion penetration and firmness of the welding joint. Secondly, choose electrode materials and shapes suitable for stainless steel welding to improve the stability and welding quality of the welding process. Additionally, stainless steel is prone to oxidation and discoloration during welding, so proper protective measures, such as using shielding gas or flux, should be taken to prevent oxidation and discoloration.

6,What should I do if my machine is damaged during the warranty period?
Answer: First, our engineers will assist you in diagnosing the issue through online guidance. If any parts are damaged during the warranty period, we will ship the parts to you for replacement free of charge. If you are unable to resolve the issue by replacing new parts, we will dispatch engineers to your factory to assist in repairing the machine.
For foreign users, we prioritize solving problems for you through remote phone and video calls. Over the past decade, almost all issues have been successfully resolved through remote phone and video calls. If part replacement is necessary, it will be done through express delivery, with remote guidance for installation.
If the problem still cannot be resolved, we will negotiate and dispatch after-sales engineers to your location for repairs.

7,What are the special requirements when the spot welding machine welds non-ferrous metals?

Answer: Welding non-ferrous metals usually requires higher welding temperatures and more precise control of welding parameters. When spot welding non-ferrous metals, special welding electrodes and materials may be required, and welding parameters such as welding current, welding time, and welding pressure need to be adjusted to adapt to the characteristics and welding requirements of non-ferrous metals. When welding non-ferrous metals, attention should be paid to their conductivity and thermal expansion coefficient. Firstly, select appropriate welding parameters such as current, voltage, and welding time to adapt to the melting characteristics of non-ferrous metals. Secondly, choose suitable electrode materials and shapes to ensure the stability and quality of the welding process. Additionally, attention should be paid to the oxidation of non-ferrous metals, and appropriate measures should be taken to prevent oxidation and the occurrence of defects such as porosity.

8,What factors affect the welding quality of the spot welding machine?

Answer: Welding quality is influenced by various factors, including welding current, welding time, welding pressure, electrode materials, and the types and thicknesses of the materials being welded. We provide suitable welding parameter recommendations based on your specific requirements and material characteristics to ensure the welding quality reaches the optimal state.