Basic Questions Before Buying a Welding Machine - Electrex

What material to be welded?
In addition to your experience or the learning curve for each welding process, the metal to be welded will greatly affect the welding machine you will buy, as each machine will only have specific welding processes available*.
Here is a table of the metals to be welded and the respective welding processes you can use:

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Within the TIG, we distinguish the DC TIG and AC/DC TIG variants, because it is only possible to weld aluminum and other light alloys with the AC TIG variant (TIG in alternating current).

*Note: there are machines with more than one welding process available. These are the multi-process.

Machine power supply?
To buy a welding machine, you need to know what type of supply voltage is available at the place where you are going to weld. If you go to DIY jobs at home, you will probably only have single-phase electricity. If it is in a company, you will also have the option of three-phase voltage (usually 380 or 400V). Be careful when buying from foreign sites, as there are machines prepared for other voltages that are not available in your country.

What is the place where you are going to weld?
It may seem like a secondary aspect, but the place where you are going to weld is very important when choosing your welding machine. For example, if you go outdoors, in a location with wind, the best options are stick welding machines (coated electrode). In this welding process, unlike MIG and TIG, the electrode already has gas protection in its coating so that the wind will not compromise the quality of your welds.
Where you are going to weld can also influence the type of design of the welding machine. To weld in a place where there are obstacles (for example, a shipbuilding workshop or a civil construction work), your machine must have portability and mobility, allowing the welder to transport it from place to place. In this case, in addition to compact and light machines, MIG/MAG machines with a separate feeder are good options.

Long or short weld beads? Thick or thin materials?
The length of your welds and the thickness of the workpieces to be welded will influence the current range and duty cycle that your machine will need to have. The current range will depend on the thickness of the metal to be welded, so the thicker it is, the more power the welding machine will have to have. The machine&#;s duty cycle will comprise how long you will be welding at a given amperage or welding current. For example: if the machine specifications states that the welding current is 200A &#; 60% and 160A &#; 100%, it means that the welding machine will weld for 6 minutes with a welding current of 200 Amperes and with a current 160 amps can run continuously. After this time of 6 minutes, the machine will probably turn on the thermal protection so you will have to let it cool down. The current range and its duty cycles must be considered and are a good comparison between different brands of welding machines.

Machine&#;s price?
The budget you have available for your new welding machine is a subjective matter and no longer depends on the factors described above. Remember that after-sales service, machine durability and welding results must also be considered and that they often require higher investments, which pay off in the long term.

Do you need a welding machine for personal or professional use? This guide will help you decide which welding machine is best for your needs.

Outline:

Welding machines are an essential tool for anyone looking to do welding work. But with all of the different welding machines on the market, it can be tough to decide which one is right for you.

The following welding machine buying guide will cover the many types of welding devices available, as well as assist you in determining which is ideal for your requirements. So whether you're a personal user or a professional welder, read on to learn more about welding machines!

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Types Of Welding Machines

Stick welders, MIG welders, and TIG welders are the three most common welding machines. Here's a quick overview of each type:

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Stick Welding Machine

Stick welding is the most cost-effective method to weld. It does, however, have the lowest conversion rate of all wire welding processes. The most basic form of stick welding is produced using a consumable electrode. Flux may be purchased separately or added to the electrode with flux to make it easier.

The electrode is treated with flux. The molten material consists of this substance, forming a slag that protects the hot weld from corrosion. As the weld cools, the slag solidifies. The solid protective covering may be scraped away to reveal the completed weld when the weld has cooled thoroughly.

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MIG Welding Machine

A wire electrode is used to weld metals with a MIG welder or Metal Inert Gas welding machine. The welding procedure begins when an electric arc is produced between the welding wire and the workpiece. That creates heat which melts the metals and joins them together.

There is no need for a flux with MIG welding, unlike stick welding. However, you will need to use a shielding gas (usually carbon dioxide) to protect the weld from contamination.

MIG welding may also be used to connect small amounts of metal. It has a clear edge over stick welding, which is inappropriate for welding fragile metals. MIG welding does not create slag, unlike stick welding. Consequently, the weld pool is simple to spot and does not have to be removed.

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TIG Welding Machine

Tungsten Inert Gas welding machines are used for thin welding sheets of metal together. They are also used for welding alloys that contain aluminum, magnesium, copper, and nickel.

A tungsten electrode is used in TIG welders to produce the welding arc. The weld is made by adding filler metal to the weld puddle. Shielding gas is not usually required with TIG welding, but a flux may be needed if welding in an environment that contains oxygen.

New welders learn MIG welding before moving on to TIG welding since it has higher precision and quality weld joints.

The good news is that, if done correctly, the operation may be completed in a short time. The bad news is that numerous factors are taken into account, and joint strength must be compensated to execute it properly. Because this isn't something you can learn quickly on your own, you should budget for training. Set aside cash for additional equipment, such as gas supply, an inert gas cylinder, TIG torch, welding cables, power supply, regulators, and hoses.

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Which Welding Machine Is Right For Me?

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Now that you know about the different welding machines let's help you decide which one is right for you.

A stick welder or MIG welder is probably best for you if you're a personal user. Stick welders are suitable for welding thicker materials, while MIG welders are good for welding thinner materials.

A TIG welder is probably best for you if you're a professional welder. TIG welders are precision welding machines perfect for welding thin and delicate materials.

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Factors To Consider While Selecting The Proper Welding Machine

Now that you know the basics of welding machines let's discuss some factors to consider while selecting the proper welding machine.

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Material

The first thing to consider is the material you'll be welding. Stick welders are designed to weld thicker materials, while MIG welders are intended for thinner materials. If you're unsure which type of welding machine is best for your needs, then speak to a professional welder or shop around for opinions.

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Power Source

The second consideration is the power source. Welding machines may be powered by electricity, gas, or battery. Each power supply has its own set of benefits and drawbacks; determining which one is appropriate for your needs is critical.

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Welding Process

The third factor to consider is the welding process. Stick welders use an electrode to create the welding arc, MIG welders use a wire feed to make the welding arc, and TIG welders use a tungsten electrode to produce the welding arc. Welding has various advantages and disadvantages, therefore picking the best one for your application is critical.

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Portability

The fourth factor to consider is portability. If you need a welding machine to take to job sites, choose a portable welding machine. Portable welding machines are smaller and weigh less than traditional welding machines, making them easy to transport.

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Gas Tanks

The fifth factor to consider is gas tanks. If you're using a MIG welder or TIG welder, then you'll need to purchase gas tanks. Gas tanks are used to store welding gas, which is used to protect the weld from contamination.

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Price

The sixth factor to consider is price. Welding machines can range from $200 to $, so choosing the welding machine that fits your budget is essential.

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Welding Machine Brands

Several different welding machine brands are on the market, but some of the most popular brands include Lincoln Electric, Miller Electric, and Hobart. These brands offer a wide variety of welding machines for personal and professional users.

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Final Thoughts

Whether you're a novice or seasoned welder, consider the material you'll be welding, the power source, technique, portability, and price when selecting a welding machine. And if you're still undecided about which welding machine to purchase, speak with a professional welder or conduct research on various viewpoints.

At Superior Welding & Fabrication, we want you to have all of the information you need before purchasing. That's why we provide weld test coupons and a wide range of welding equipment and supplies. Give us a call right now to talk about which welding machine is best for you!

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