What is an iron welding machine without welding rods? Pros and Cons of Rodless Iron Welding Machine

In the era of technological development, modern equipment is increasingly replacing traditional tools, making work more convenient and efficient. Typically, iron welding machines without welding rods, are gradually replacing welding machines that need to use rods. This new type of welding machine not only improves work productivity, but also ensures better product quality. So  what is a rodless welding machine? What are its pros and cons? Let’s explore with RX Tradex to better understand this cutting-edge device.

1. What is a rodless welding machine?

Traditional rod welding machines use welding rods with filler to conduct electricity and create welds through the process of melting and applying filler metal. In contrast, rodless welding machine adopt modern methods such as molten arc welding and tungsten electrode welding.

At present, there are three popular types of rodless iron welding machines: Tig welding machine, Mig welding machine, and multi-function welding machine. Each type of machine has its own operating principle, pros/cons and applicability, suitable for each specific mechanical field.

Rodless welding machine are popular with many people because of their ability to weld a variety of metals and produce higher quality welds than rod welding machines. However, their disadvantages are that they are more expensive and the cost of using them is also more expensive.

2. Types of rodless welding machines

Rodless Mig Welding Machine

Like the rod welding machine, the Mig welding machine also adopts the molten arc welding method, but the difference is that it works in an environment with protective gases such as CO2, Argon or gas mixtures. Instead of using welding rods, the Mig welding machine uses a welding gun connected to the welding coil to compensate for the auxiliary metal for the weld.

Mig welding machines have two main types: the type that uses protective gas (also called CO2 welding machine) and the type that does not use protective gas.

Advantage

• The Mig welding technique is not difficult and easy to learn
• Mig welding machines are capable of welding all types of metals such as iron, steel, non-ferrous metals, and specialty metals
• The welding speed is very fast, which meets the high work efficiency.

Shortcoming

Mig welding machines have the highest cost of all electronic welding machines today. In addition, there is also the cost of buying gas cylinders and welding coils, both of which are not cheap. Therefore, Mig welding machines are often used in industrial welding workshops.

Rodless Tig Welding Machine

The Tig welding machine adopts the method of welding tungsten electrodes that do not melt in inert gas environments, such as Helium and Argon. This type of rodless welding machine is capable of welding most of today’s popular metals including iron, steel, copper, aluminum,… especially thin stainless steel welds.

Tig welders use only welding pliers and tungsten electrodes, and can use additional Tig sticks, or no to create a weld.

Advantage

The weld of the Tig machine is very beautiful and shiny. If machining is required, just use a mild grinder or stainless steel remover. When Tig welding does not use rods, there is no phenomenon of welding sparks splashing out like rod welding machines.

Tig welding machines are often used in stainless steel processing workshops, instead of using rod welding machines. Because the rod welding machine produces stainless steel welds, it is easy to tarnish, rust and difficult to clean. Therefore, a Tig welding machine is a worthy option to consider when it comes to rod-less welding.

Shortcoming

The welding speed of the Tig machine is very slow, which reduces work productivity.

The Tig welding technique is quite complicated, requiring highly skilled workers

Tig welding machine price is usually higher than rod welding machine. In addition, the cost of using periodic Argon gas cylinders also increases the total cost of Tig welding. Meanwhile, the rod welding machine only needs to use the welding rod, which is very cheap but also easy to use many times.

Universal Welding Machine

A multi-purpose welding machine is a device capable of performing a variety of welding functions, including: Tig rod welding machine (non-stick Tig welding or rod welding) and Mig rod welding machine (CO2 welding, non-gas Mig welding or rod welding).

Advantage

The universal welding machine supports a variety of welding functions, allowing welding on a wide range of materials and meeting a variety of work requirements. This is not only a conventional rodless welding machine, but also capable of welding rods when needed.

This versatile welding machine helps to avoid work interruptions, especially in the case of mobile iron welding at outdoor projects or when it is necessary to weld rods due to the exhaustion of protective gas during mig welding.

Although it can be imagined that the price of a multi-purpose welding machine is high, in fact, the selling price only ranges from 3.4 million to tens of millions of VND. Buying a universal welding machine (rod and non-rod) provides maximum cost savings because there will be no need to buy many other welding equipment.

Shortcoming

Although it is possible to buy a universal welding machine at a low price, this type of machine is only suitable for small welding workshops and family use. To be used for medium and large-scale residential welding workshops, it is recommended to invest in a welding machine priced from 6.5 – 11 million VND or more. Although this amount is not small, the usable value of the device is completely worth the investment.

3. Some popular non-rod electronic welding machines on the market today

Weldcom Multimag V2000 Non-Gas Mig Welding Machine

Weldcom Multimag V2000 is a welding machine that integrates three functions: rod welding, non-gas Mig welding and CO2 gas Mig welding. The machine uses a 5kg Mig welding coil and a Mig welding gun. Even though it is a rod-free welding machine, it still supports rod welding when needed.

• Non-gas MIG welding: Using 0.8 – 1.0mm diameter self-protecting drug core wire, fast zinc code steel welding, easy to clean wholesale welding.
• MIG welding with gas protection: Use 0.8mm diameter solid core wire, 5kg coil, for stable wire output speed.
• Rod welding: Supports continuous 2.5mm rod welding and 3.2mm rod welding for beautiful, deep-swallowing, durable welds.
• Aluminum Welding: Aluminum can be welded with Silicon welding wire (ER 5356, ER 4043) when replacing chicken intestines and wheels.

Inverter Tig Rod Welding Machine HK TIG 200E

If you have to look for an affordable rodless welding machine that is suitable for stainless steel welding at home, then the Hong Ky HK TIG 200E welding machine is an option worth considering. The machine integrates two functions: rod welding and Argon gas welding (without rod), serving a variety of uses.

The machine has an operating efficiency of up to 85%, capable of continuous welding with 1.6mm welding rods and can weld 3.2mm welding rods, the machine also uses 1.6 – 2.4mm welding pliers to weld stainless steel Tig

Jasic Tig 200S W221 Welding Machine

The Jasic 200S welding machine is an excellent choice in the rodless welding machine series. The Tig 200S W221 model, the most popular and best-selling model today, has a price that is suitable for many people.

With a rated power of 6.6 KVA and a welding current of 200A, the machine allows the welding of metals with a thickness of 0.3mm to 8mm. The arc is stable, produces a high-quality, beautiful, deeply devoured and strong weld.

4. Conclusion

The use of rodless welding machine is becoming more and more popular in the mechanical industry thanks to its outstanding advantages such as beautiful weld quality, high performance and welding of a wide variety of metals. Hopefully, through this article, you have an overview of rodless welding machine and can make the right decision for your needs.Vietnam Manufacturing Expo 2024, organized by RX Tradex Vietnam , is one of the leading events in manufacturing technology and supporting industries in Vietnam. This will be an ideal platform for mechanical and supporting industry enterprises to showcase their capabilities, connect with domestic and foreign partners,  at the same time, update advanced technology trends. In addition, in 2024, RX Tradex will also organize other exhibitions such as NEPCON Vietnam, METALEX Vietnam and Waste and Recycling Vietnam.