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#FLUX CORE WIRE SIZE CHART HOW TO#

Like many other factors, the use of flux core wires also bear many pros and cons. Advantages And Disadvantages Of Using Flux Core Wires Picture 05 – Self-shielded Flux Core Wires. However, it can also be utilized in some special industries, such as structural steel, and bridge construction. You will often find self-shielded flux core wires being used in small-scale projects, like a DIY application or a small commercial environment, with a flux cored we l der. It can totally be used for outdoor processes. With no external shielding gas utilized, FCAW-S provides more portability to the welding process. Self-shielded flux core wires (FCAW-S)Ĭontrary to gas-shielded flux core wires, self-shielded type does not require an external shielding gas and employs purely the flux for molten weld pool protection.Īs the wire is burnt during the welding process, its flux will generate shielding gas to safeguard the molten weld puddle from contaminants.

Picture 04 – Gas-shielded Flux Core Wires. This type of flux core wires is also applicable in some popular industries like pressure vessels building, petrochemical piping, and heavy equipment production. When dealing with thick metals or difficult welding positions mentioned above, I highly recommend using gas-shielded flux core wires. Hence, FCAW-G is very ideal for performing welding overhead or vertical up positions.Īs the wires employ both the flux and the external shielding gas to protect the molten weld puddle, it is often regarded as the “double-shielded mechanism”. As a consequence, it can create a shelf to hold the molten pool more quickly. The flux of gas-shielded flux core wires solidifies faster than the molten weld metal. The slag formed from this type is easy to remove.

This first type refers to flux core wires that utilize an external shielding gas during the welding process. Picture 03 – Two basic types of Flux Core Wires. There are basically two broad types of flux core wires: gas-shielded (FCAW-G) and self-shielded (FCAW-S). The concept of flux core wires has emerged around since the 1950s. We will discuss this issue more detailedly in the later part of this article. It can work well on both DCEP and DCEN, depending on its composition.

You are forced to weld in awkward welding positions (vertical up, overhead).įlux core wires function on constant-voltage (CV) DC power sources.

You are performing the welding process outdoors or under windy conditions.

You are dealing with rusty or contaminated metals.

You need to get the welding application finished quickly.

You do not have expensive welding guns.

You are a novice welder, or you plan to fix a broken metal.

There are various situations where you can make use of flux core welding wires. The slag layer will be removed once the welding process is done. It also contains scavengers and deoxidizers to push impurities out of the weld and into the slag. The flux comprises many compounds that, when melted, generate a shielding gas to protect the weld from being contaminated. What makes flux core wire special is its flux, of course. Let’s waste no more time and jump right in! Picture 01 – Your Most Updated Selection Guide On Flux Core Wire What Is Flux Core Wire?įlux Core Wire is simply a welding wire used in the Flux Cored Arc Welding process, which contains flux inside its hollow core covered by the welding materials (usually mild steel) on the outside.

#FLUX CORE WIRE SIZE CHART HOW TO#

Having a comprehensive guide on how to purchase flux core wires.Understand different types of flux core wires.Grasp the basic ideas of what flux core wires are.

In this article, I will narrow things down and walk you through the journey of picking up the best flux core wire. If you are getting confused on how to select the most appropriate flux core wire for your welding projects, then congratulations, as you have come to the right place.