Tabletop Spot Welding Machines

Electro Technotak Tabletop Spot Welding Machines are designed and manufactured for welding very delicate electronic and electrical components, brazing applications, and precision spot welding. In general, the force application mechanism of these machines is designed to generate two different pressure levels combined with electrical current, making them particularly suitable for welding non-ferrous metals. The welding process is precisely controlled by electronic control timers, ensuring consistent and uniform weld quality.

Types of Pedal-Operated Tabletop Spot Welding Machines

1. Pedal-Operated Spot Welding Machines for General Workshops

• These machines typically feature medium-length arms, for example, 35 to 70 cm.

• The typical power range for these models is approximately 20 to 40 KVA.

• Applications: Suitable for welding low- to medium-thickness oiled sheets, mild steel sheets, stainless steel, galvanized sheets, and wires.

• Advantages: Lower installation costs, suitable for workshops that do not require high-volume production, and easy operation.

• Limitations: May not be suitable for thicker sheets or very high production volumes.

2. Timer-Controlled / Dimmer-Controlled Pedal-Operated Spot Welding Machines

• Some models are equipped with a timer and dimmer for precise adjustment of welding time and current intensity. This feature provides better and more accurate control over weld quality.

• These machines are generally used in semi-industrial workshops or applications where weld quality is critical, such as automotive body panels and sensitive components.

• Technical specification: For example, 35 KVA models can be capable of welding sheets up to 3 mm thick.

• Advantages: More precise control and repeatable welding with consistent quality.

• Limitations: Higher cost and the need for more specialized settings.

3. Long-Arm Pedal-Operated Spot Welding Machines / Models for Large Sheets

• These models feature longer arms, typically over 60 cm, making them suitable for larger sheets or applications where access to the welding area is difficult.

• These machines generally have higher power ratings, such as 40–50 KVA, allowing them to weld thicker sheets.

• Advantages: Better accessibility and higher capacity for welding thicker sheets.

• Disadvantages: Require more workspace, have higher power consumption, and generally cost more.

4. Comparison with Other Models (Non-Pedal)

• Manual models (hand-operated or simple manual): In these models, the operator manually controls the current. They are suitable for smaller-scale and low-volume applications.

• Pneumatic or hydraulic models: These machines use pneumatic or hydraulic pressure to apply force and are suitable for welding thicker sheets and high-volume production. They generally have a higher cost and are more suitable for larger workshops.

Options for Tabletop Spot Welding Machines

• Constant-current control timer and commonly used control switches

• Alarm light, proportional valve, and air and water flow switches

• Custom design and manufacturing of holders and formed electrodes for specialized components

• Capability to install formed electrodes for welding specialized components on pedal-operated spot welding machines

Standard Components and Accessories of Tabletop Spot Welding Machines

• Transformer with a digital control panel

• Force application components, including a pneumatic cylinder with a dual-pressure mechanism and solenoid valve

• Electrical current transfer components

• Foot pedal

• A pedal-operated spot welding machine temporarily applies pressure to the workpieces when the pedal is pressed to create the spot weld. If the components are not properly positioned and securely held in place, the weld may be weak, misaligned, or unsuccessful. Using a welding fixture helps position the components accurately, resulting in precise and uniform welds.

Applications of Pedal-Operated Tabletop Spot Welding Machines

• Automotive industry

• Electronic and electrical industries

• Military industries

These machines can also be used in all related industries that require equipment for welding metals with weld precision down to 0.1 mm.

Additional Information About Purchasing a Tabletop Spot Welding Machine

• The tabletop spot welding machine is recommended for welding low-thickness copper and brass electrical connectors.

• The machine requires a 380 V two-phase power supply and can be operated with a minimum current of 50 A.

• The tabletop spot welding machine is not recommended for simultaneous multi-point welding applications (projection welding).

Advantages and Disadvantages of Pedal-Operated Spot Welding Machines

Advantages of Purchasing a Tabletop Spot Welding Machine:

• Lower cost compared with more complex systems.

• Relatively easy and fast operation for spot welding.

• Suitable for thin sheets and workshop-scale production.

• Foot-pedal control provides greater convenience for the operator.

Disadvantages:

• May have limitations in sheet thickness or production volume compared with mobile spot welding machines.

• Weld quality may be slightly lower than that of automated systems and can depend on operator accuracy.

• Requires regular maintenance of electrodes, cooling systems, and arm-pressure mechanisms.

• Larger or thicker components may require a machine with longer arms and higher power.

Advantages and Reasons to Choose Electro Technotak Industrial Group

• 44 years of experience in the research, design, and manufacturing of resistance welding machines

• Reliable, high-quality welds

• Welds capable of withstanding tension, torsion, and bending

• Low welding costs with no need for additional consumable materials

• Easy operation, even with a semi-skilled operator

• Lightweight, portable, and durable

• 10 years of service and technical support for all products

• 1-year warranty from Electro Technotak

• Competitive pricing for tabletop spot welding machines

Important Technical Factors When Choosing a Pedal-Operated Spot Welding Machine

• Power (KVA or KW): Machine power determines the thickness of sheet metal that can be welded. For example, a 20 KVA machine is generally suitable for welding two 1 mm sheets, while a 45 KVA machine can be suitable for welding two 3 mm sheets.

• Input Voltage: Machines may be single-phase or three-phase. The appropriate machine should be selected based on the electrical power available at the workshop.

• Arm Length and Electrode Diameter: For large components or applications where access is difficult, selecting a machine with suitable arms and electrodes is essential.

• Welding Time and Current Settings (Timer/Dimmer): Machines equipped with these controls provide better control over weld quality.

• Maintenance: To maintain consistent weld quality, it is essential to keep the electrodes clean, properly adjust arm pressure, and use an appropriate cooling system.

• Application and Production Volume: For high-volume production, a basic pedal-operated machine may not be sufficient, and more advanced pneumatic or automated systems may be required.

• Using a welding inverter in a pedal-operated spot welding machine can improve weld quality and reduce errors caused by improper current and welding-time settings.

Relationship Between Pipe Seam Welding Machines and Pedal-Operated Spot Welding Machines

A pipe seam welding machine and a pedal-operated spot welding machine both use resistance welding technology, but their applications and operating principles differ. Nevertheless, there are certain similarities and differences between these two machines that help clarify their relationship within resistance welding processes.