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The MIG High Frequency Welding or TIG High Frequency Welding

The MIG High Frequency Welding process uses an inert gas to shield the weld and to keep it free from impurities. This makes MIG welding very neat and easy to clean up since there isn't anything to chip away, which is typical for Stick welding.

MIG Welders are extremely popular because they tend to cost less than TIG or Stick welders with comparable power and features, are extremely easy to learn, and can tackle a wide variety of projects. Since the filler metal is fed through the MIG welding torch, welders can use both hands to hold the torch steady rather than using one hand to add filler metal, as in TIG welding. The wire feeder also makes MIG welding up to four times faster.

MIG welding can be used on a wide variety of materials such as aluminum and is also frequently used for automotive work. However, MIG also requires the purchase of shielding gas and generally requires materials that cost more when compared to other methods.

TIG Welding

When appearance counts, TIG welding creates a high quality, clean weld that is far less likely to distort the metal by using a nonconsumable tungsten electrode. There is no need to worry about splatter because it only uses the necessary amount of filler metal needed in the welding puddle, making for the highest quality weld in every respect.

However, TIG is fairly specialized and requires a good deal of training in order to master it—so make sure any TIG welder purchase is paired with a plan to take welding classes. Instead of the point and shoot simplicity of MIG welding, TIG requires the use of a foot pedal to regulate the welding process. A filler rod that is separate from the torch must be fed in gradually.

Many professional welders prefer TIG because it can weld a wide variety of metals and because of the versatility of argon gas used during TIG welding.  There is no slag to block the view of the weld puddle. Argon gas can weld any metal at any thickness with TIG welding, and therefore there is no need to change the gas depending on the project.
stick-welder-weldingStick Welding

Stick welding is one of the most effective techniques for fusing alloys and joints, but it is also the least efficient. The process utilizes a consumable stick electrode that works anywhere, inside or outside, and the welding process is quite simple. The weld is not protected by a shielding gas. Rather, the electrode is coated with flux that covers the weld and protects it. This layer must be chipped away when the weld is completed.

Because it doesn't require shielding gas, stick welding remains popular and cost-effective. It's also the most convenient since a welder can easily switch from one metal work piece to another by changing the filler metal rod in order to match it to the metal workpiece.
Power Options for Welders

Welders with a higher power output can work with thicker metals, but higher voltage welders will require special power supply set ups—either generators or appropriate power outlets. A welder with lower voltage in the 100's will not be able to handle heavy duty jobs, but it can be plugged in and operated from any outlet. Any welder with power over 115V cannot run off a typical power outlet and will naturally cost more to run.

welder-plugIn addition, welders will either run an alternating current (AC) that reverses itself at regular intervals or a direct current (DC) that flows in one direction and does not reverse itself. DC offers a steady rate of energy that leads to hotter temperatures and deeper weld penetration.

AC welders usually cost less than DC welders, but the available electrodes are far more limited for AC. In fact, DC welders are more costly but remain popular because their higher power offers a wider selection of electrodes and a number of working advantages such as: simple arc striking, better penetration, and improved control. Welders who expect to work on a wide variety of projects may want to consider an AC/DC combination welder.
Choosing a Welder with the Right Duty Cycle

A duty cycle is the length of time a welder can run before it needs to be turned off in order to cool. The less expensive welders have shorter duty cycles, while the more expensive welders have longer duty cycles—some can even run continuously at a 100% duty cycle.

Longer duty cycles are critical when welding thicker metals that require more time on task. For home and hobby RF Welder, a duty cycle may not be as important a factor as it would be for professional welders in a shop.

The capture of HF Welder fumes

High Frequency Welding large fabrications, frames, and complex geometries can pose challenges for capturing or controlling the associated weld fume. Further, compliance with recent Environmental Protection Agency (EPA) regulations is forcing fabricators to rethink roof exhausters they have relied upon to keep weld fume in check.

While best practice is always to capture weld fume as close as possible to the source to improve energy savings, protect workers, and prevent fume migration, many fabrication shops simply can’t capture fumes at the source. Factors that might prevent local capture include:

    Part geometry.
    Weldment size.
    An employee’s unwillingness to use extraction arms.
    Extreme cross-drafts from main cooling fans.
    Overhead cranes or other obstructions that prevent the placement of hoods or ductwork.

In many facilities the challenges to control weld fume vary from application to application. That makes the successful approach to fume capture for one fabricator much different from another fabricator’s. For example, an ambient collection system that cleans a large area of the plant clears the fume haze, but does not directly protect the workers’ breathing zones while they are welding. This raises an important point: The one-size-fits-all strategy for large-part welding is not realistic. That’s why a coordinated approach is necessary to create a strategy that successfully addresses the capture of HF Welder fumes in large-component welding environments.



When you contact davison-machinery to service RF welding machines, you can move forward with absolute confidence knowing that you, and the job, will not be let down. In addition to our extensive inventory of RF Welding machine parts and range of RF equipment services, we carry a variety of used and refurbished products to replace older, broken-down machines. We also offer technical support from knowledgeable representatives via phone or email, and we will even provide a dedicated service engineer on your floor to appropriately assess your needs.


We help our customers save thousands of dollars by providing local field service on European RF machines, and we use our extensive network to locate difficult-to-find parts and units to get your RF welding machines repaired faster. Our experienced RF welder service team can also service all European brand machines at our conveniently located facility.

At davison-machinery, we are all about building long-term relationships with our loyal customers by supplying superior service at competitive prices. Don’t forget to register your email to get copies of our maintenance specials where we offer discounted spare parts and Preventative Maintenance visits.

The best high frequency welding machine suppliers is davison-machinery's High Frequency Welding Machine.

Why Use RF Welding?

Why Use RF Welding?

There are several alternatives to RF welding including sewing, gluing, or using hot air. Why use RF welding?

RF Welding vs. Sewing

RF welding provides a consistent air tight seal unlike sewing. When sewn seams are stressed, the thread takes the pressure and could break. RF welds evenly distribute stresses throughout the material providing a much stronger seam while preventing any air, moisture, or debris getting in.

RF Welding vs. Gluing/Adhesives

Gluing can provide an air tight solution, but gluing takes much longer than RF welding and often uses hazardous solvents that are harmful to the environment. Glued seams are also subject to failure once the adhesive has worn out.

RF Welding vs. Hot Air

Hot air is a method that applies heat to the outside of the material to melt it and create a bond. This method is only effective up to certain thicknesses. Materials that are too thick will not bond in the middle as the core will struggle to melt, while the outside layers are over heated or burned. RF welding heats from the inside out and is the best method for forming air tight seams.

Davison-machinery’ RF Welded Products

One of our newest innovations for the medical device industry, DAVISON ,is manufactured via RF welding. FlexShield is a medical device pouch designed to prevent sharp medical instruments from puncturing the sterile barrier. It is crucial to the functionality of the product that the RF welds on FlexShield maintain their integrity throughout the supply-chain. High Frequency Welding is also used in a number of wound care applications that assist patients through the healing process. For safe storage of defibulators,Davison-machinery manufacturers a three chamber reusable pouch storage system that is sealed using RF welding. We also utilize these capabilities to produce industrial cleaning products.

A good value but also tried and true

The problem in this is threefold.

    All the hoses , cables, remote controls, High Frequency Welding  and torches it takes to tig, mig, and stick are just plain unmanageable.
    When the machine breaks, you are dead in the water, whereas if you have separate machines for each, you can at least get by until you get the broke machine fixed
    Multiprocess machines never quite measure up in all three processes...kind of like an old El Camino that was supposed to be both car and truck, and was really not very good at being car OR truck.

Rather than try to buy RF Welding Companies on machine that does it all, why not buy 2 or 3 used welding machines that are not only a good value but also tried and true machines.