WELDING

Welding aims to introduce you to various spot welding machines, nail pullers, and battery welders used in automotive bodywork or battery construction. This pertains to spot welding in general during the repair of automotive sheet metal or the manufacturing of electric batteries.

Different welding techniques and tools will be presented to achieve professional results.

Whether you are a beginner or an expert, you will find practical tips here to perfect your spot welding craft. This will help you optimize your bodywork repairs and battery creations.

Spot welding is a widely used welding technique in various industrial sectors. This is especially true in boiler making and sheet metal work. This process primarily uses an electric arc to fuse metal pieces. The electrodes are usually made of copper. They transmit the necessary heat and pressure to create the weld spot.

The different spot welding processes

Welders must master various spot welding processes. MIG MAG, TIG, and shielded electrode arc welding are the main processes. Each of these processes uses a welding torch and filler metal. It is often in the form of a rod or flux-cored wire to create solid welds. TIG welding, for example, uses a tungsten electrode and an inert gas. Argon protects the molten pool from contamination.

The choice of shielding gas, such as argon or helium, is crucial to prevent oxidation. This ensures good penetration of the weld. Welders must also choose the right type of welding machine. This depends on the materials to be welded, whether stainless steel, cast iron, alloys, or thin sheets.

The semi-automatic process, like MIG MAG, uses a feeder to continuously supply the welding wire. This facilitates welding work on large surfaces or bulky assembly parts. Arc welding is performed manually. It can also be done with an automated generator for repetitive and precise welding operations.

Settings of spot welder

During spot welding, polarity, current (AC or DC), and amperage are carefully adjusted. They depend on the material and the thickness of the parts to be welded. The use of a welding mask and a protective hood is essential. This protects the eyes and skin from splashes and UV rays produced by the electric arc.

The specific case of spot welder

Spot welding is particularly effective for assembling thin sheets, for example in the automotive industry, where speed and precision are crucial. Each weld spot is applied in a very short welding time. It allows for quick and efficient welding of parts without overheating the surrounding materials too much. This reduces the risk of deformation.

Welding training includes learning various welding techniques, using different types of welding machines, and essential safety rules. Professional welders must also know how to detect and correct welding defects, such as cracks or inclusions, to ensure solid and durable assemblies.

Spot welding and other welding processes thus require in-depth knowledge of equipment, materials, and welding techniques to achieve quality welds. Tools such as torches, electrodes, generators, and shielding gases all play a crucial role in the success of welding operations, whether for maintenance work, industrial manufacturing, or craftsmanship.

Spot welding

Spot welding is a method of resistance welding. It is primarily used in the automotive industry to assemble metal parts quickly and durably. This technique involves applying strong pressure and a high-intensity electric current to two or more overlapping metal sheets.

The electrical resistance at the metal interface generates enough heat to locally melt them. This forms a solid weld once cooled.

The main use of spot welding in the automotive industry lies in assembling body panels and the metal structures of vehicles. This method is appreciated for its speed and efficiency. It allows the production of thousands of weld spots in a single production day. It also offers high precision, essential for maintaining the strict tolerances required in automotive manufacturing.

Stud welder

A nail puller is primarily used in bodywork workshops. It serves to straighten dents and deformations in sheet metal panels. It works by welding nails or special pins onto the damaged surface of the sheet metal. Once welded, these nails serve as anchor points to apply tension and straighten the sheet metal.

The damaged area of the sheet metal must be cleaned to ensure good adhesion of the nails. A nail puller quickly welds nails at specific points on the sheet metal. The welding occurs through a short electric current pass through the nail, generating enough heat to fuse the nail metal with the sheet metal.

A traction tool (usually an inertia hammer or a lifting device) is attached to the welded nails. By pulling on this tool, the technician applies controlled force to straighten the sheet metal.

Once the sheet metal is straightened, the nails are removed, and the surface can be sanded and finished to eliminate any remaining imperfections.
This process allows for the repair of body panels without having to disassemble the parts. This provides a quick, precise, and cost-effective solution for all interventions and repairs.

Battery welder

A battery welder or spot welder for batteries allows the manufacture of batteries based on lithium-ion cells. It works by spot welding the batteries to special conductive strips. Once welded, these strips serve as points in the battery’s series or parallel electrical network.

Interest

Battery spot welding is currently of particular interest. With the advent of electric vehicles, more and more people are looking to utilize these propulsion methods. For example, electric bicycles are significant battery consumers. When you consider the price of a bicycle battery, the interest in building your own battery becomes clear. This involves assembling cell packs in a safe and efficient manner. For this, you need a specialized spot welding method. You must be able to connect nickel tabs to each terminal of the battery cells.

Everyone can thus create their own battery by varying the number of cells and adapting their desired geometric configuration. The battery can be easily installed in the chosen location. Building a bicycle battery is just one example among many. Why not create your own scooter, electric skateboard, or other means of transport requiring an electric battery?

Technique

Battery spot welding is an essential technique for assembling cell packs in a safe and efficient manner. This method uses a specialized spot welding machine to connect nickel tabs to the terminals of the battery cells. The tabs are cut to the appropriate length. They are cleaned to ensure good conductivity.

The cells are placed in a battery holder, aligned according to the desired configuration, whether in series or parallel. The spot welding machine is precisely adjusted, tuning the power and duration of the welding pulse to avoid any damage to the cells while ensuring solid welds. Each tab holds with a controlled pulse firmly connecting the cells. The final connections must be insulated to prevent short circuits.

Assembly

After assembly, the battery is tested with a multimeter to check the voltage and ensure balanced operation. Charge and discharge tests validate performance. This process allows the production of reliable and durable batteries, essential for various applications, ranging from portable electronic devices to electric vehicles, while ensuring safety and efficiency.

VEVOR

VEVOR is a recognized brand offering a wide range of welding equipment, including spot welding machines, nail pullers, and battery welders.

VEVOR Models

VEVOR offers several models suitable for spot welding:

Spot Welder 737G: Designed for precise welding of nickel strips, this machine features selectable pulse modes and current adjustment across 99 levels. It is equipped with an LCD display to monitor pulses and LED lighting to facilitate work in low-light environments.
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Spot Welder 801D: Utilizing pulse welding technology with capacitor energy storage, it offers an output power of 14.5 kW and a maximum welding energy of 290 J. It is suitable for welding pure nickel strips from 0.1 to 0.3 mm, ideal for assembling lithium batteries.
VEVOR

VEVOR also offers nail pullers and dent removals stations for bodywork repair:

Bodywork nail puller 5 kW: This dent removal kit offers 10 welding modes and is designed to work on steel and aluminum panels. It is equipped with two welding guns and an overheating protection system, ensuring precise and effective repairs.
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Bodywork nail puller 3 kW: Featuring 6 welding modes, this tool is designed for dent formation and sheet metal repair. It comes with complete accessories, including two welding guns, and has a rapid heat dissipation system for prolonged use.
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VEVOR also offers specific spot welding for battery assembly:

Battery Spot Welder 737G: This machine is equipped with selectable pulse modes, precise current adjustment, and LED lighting to facilitate the welding of nickel strips, making weld spots more reliable.

VEVOR products are appreciated for their versatility, efficiency, and advanced features, meeting the needs of both professionals and hobbyists in welding and repair.

History of VEVOR

VEVOR is a Chinese company founded in 2007 in Shanghai. It specializes in providing tools and equipment for home and industry. Since its inception, VEVOR has expanded its presence to over 200 countries. It now serves more than 10 million customers. VEVOR’s mission is to offer robust products at competitive prices.

The company has over 60 warehouses located in countries such as Australia, Canada, Germany, the United Kingdom, and the United States. These warehouses facilitate efficient global distribution. VEVOR offers a wide range of products, from industrial equipment to household items, including gardening tools and automotive supplies.

VEVOR has established itself as a major player in the field of affordable tools and equipment. Its global presence is significant.

Buy VEVOR

VEVOR products are available on several online platforms, such as:

• Amazon: VEVOR has a store on Amazon, offering a variety of products with the benefits of fast delivery and customer reviews to guide your choices.
• AliExpress: VEVOR products are also available on AliExpress, allowing you to compare prices and read seller ratings.

When shopping online, it is essential to ensure that you are buying from reliable sources to guarantee the authenticity of VEVOR products. Avoid suspicious or unofficial websites that may offer counterfeit or inferior quality products. For added security, prioritize the recognized platforms mentioned above.

Selection of VEVOR welding products:

Here are some products from the VEVOR range that have caught our attention:

Master spot welding with VEVOR for performance, durability and versatility:

Precision welding for robust sheets
With VEVOR’s portable spot welder, achieve flawless welds on carbon steel and aluminum sheets up to 4/25 inches thick. Whether for personal or professional projects, this machine guarantees unparalleled quality and spot welding performance.

Optimal power for fast and efficient welding
Equipped with a nominal input capacity of 9.2 KVA and an output current reaching 4,500 A, the VEVOR spot welder is designed to meet all your needs, from light tasks to intensive work. Enjoy unmatched efficiency for professional results.

Exceptional durability thanks to premium materials
Manufactured with high-quality copper tips, this machine offers durable and reliable performance. Perfect for welding materials of varying thicknesses, it reduces your maintenance costs while ensuring clean and precise welds.

An Easy-to-Use tool for all levels
Ideal for beginners and experts alike, its intuitive design allows you to weld in a few simple steps: pull the lever, apply pressure, and weld! Lightweight and compact, the VEVOR spot welding gun is easy to transport thanks to its ergonomic handle, perfect for use on various job sites.

Versatility for a multitude of applications
This spot welding machine is the ideal solution for numerous sectors: automotive manufacturing, electronic assembly, metallurgy, and much more. Take your welding projects to the next level with remarkable efficiency.

Choose VEVOR for uncompromised spot welding!
With this portable spot welder, benefit from a reliable, powerful tool suited to a wide variety of needs. Turn your ideas into reality and enhance your welding performance today!

Optimize battery welding with the VEVOR 801D spot welder

Precision and Control for Welding Pure Nickel
The VEVOR 801D spot welder offers precise control for welding pure nickel strips from 0.1 mm to 0.3 mm, ensuring reliable performance for your battery assemblies. Perfect for spot welding batteries, electronic components, and metal hardware, this machine is an essential tool for modern industries and advanced technologies.

Exceptional Power for Efficient Welding
Equipped with pulse welding technology with super energy accumulation, this capacitor welder achieves an impressive power of 14.5 kW with a maximum welding energy of 290 J. This level of performance ensures solid welds, enhancing the reliability and efficiency of batteries.

Versatile Welding Modes for All Applications
Equipped with a welding pen 73B and a welding arm 73S, the VEVOR 801D welder offers two welding modes:

AT Mode: ideal for quick and large-scale welding tasks.

MT Mode: designed for precise control and refined finishes during welding.

These options make the device perfect for a variety of industrial applications.

Intelligent LED Display for Simplified Control
With its intuitive LED panel, monitor parameters such as welding power, capacitor voltage, and actual current in real-time. Easily adjust energy levels between 1 and 99 steps for fast and optimized welding, thereby enhancing your productivity.

Compact and Portable: The Ideal Welder for Batteries
Designed to be lightweight and compact, the VEVOR 801D spot welder is easily transportable and practical. It combines power and functionality while being significantly less bulky than traditional models, making it the perfect tool for your battery welding projects.

VEVOR 801D: Your Ally for Efficient and Reliable Spot Welding
With its advanced technology and versatility, this welder is a must-have for demanding professionals. Enhance your battery assemblies with a high-performance and durable spot welding solution.

VEVOR automotive bodywork nail pullers for enhanced performance, versatility, and safety

Reliable Welding for Precise Body Repairs
The VEVOR automotive bodywork nail puller, with its 3 kW power, offers solid and professional spot welding. It is designed to handle sheets up to 1.2 mm thick on one side. This tool ensures precise repairs without damaging the vehicle’s bodywork. For optimal results, be sure to thoroughly clean the sheet surface before welding.

Ease of Use for Efficient Work
Set the welding mode and power, and the machine does the rest! Thanks to its automatic welding function, the dent extractor determines the ideal moment to weld, applies the necessary pressure, and performs quick and precise welding. No need for manual switches; the process is smooth and optimized for consistent results.

6 Welding Modes for Maximum Flexibility
This VEVOR automotive bodywork nail puller offers six functional modes:

Round Joint

OT Joint

Wavy Line

Hot Press Flattening

Carbon Rod

Sliding Hammer for Spot Welding

These options make this machine ideal for handling deep dents, flat areas, long lines, curves, and much more. Compatible with materials such as carbon steel, stainless steel, iron, and galvanized sheets, it is perfect for a variety of automotive repairs.

Enhanced Safety with Overheat Protection
Equipped with an intelligent system, this machine automatically stops when the temperature reaches 95 °C, preventing short circuits and damage. The side vents ensure rapid heat dissipation, ensuring safe and reliable operation.

Complete and Portable Professional Kit
The VEVOR dent removal kit includes all necessary accessories, carefully organized in a practical toolbox. Compact and lightweight, the machine is equipped with an ergonomic handle, making it easy to transport and ideal for use at different sites.

VEVOR: The Ideal Solution for Body Repairs
With its power, versatility, and safety features, the VEVOR automotive bodywork nail puller is an essential tool for professional and effective repairs. Enhance your dent removal skills with this state-of-the-art equipment!