Last Updated: June 12, 2022 by Louis Sham
Welding Electrodes & Filler Rods Explained
Table of Contents
- (also known as welding electrodes, welding rods, weld rods)
- Different welding electrodes
- Consumable electrodes
- Light coated electrodes
- Bare electrodes
- Shielded arc electrodes
- Non-consumable electrodes
- Carbon electrodes
- Welding Rods and the Damaging Effects of Moisture
- Stick Welding Process Intro
- Stick Welding Techniques
- Selecting the Right Electrode for Basic Stick Welding
- How to read the code on stick electrodes
- Tungsten electrodes and their different kinds
(also known as welding electrodes, welding rods, weld rods)
are used for welding, brazing, and soldering. They are usually made of a tungsten alloy (the most common one being Tungsten Carbide) or a copper alloy (this is usually known as Copper-Tungsten).
Tungsten electrodes are very hard and brittle so are usually used for welding, while copper electrodes are softer and more ductile so are usually used for brazing and soldering.
When you look at the tip of a stick electrode, it is usually made up of a very hard material at the tip, which is usually made up of tungsten or tungsten carbide. This hard material is called the tip, tip-up, or tip. The rest of the stick electrode is usually made up of a softer material which is usually copper or copper alloy. This softer material is called the rod.
Different welding electrodes
have different melting points, which means that the higher the melting point, the harder the metal is to melt. We can use this to our advantage. For example, tungsten or tungsten-core electrodes are harder than carbon arc welding electrodes, and are therefore able to melt more easily and be used in more applications. However, they are also more expensive.The consumable electrodes are the cheapest and include:- carbon-arc wire-carbon-tungsten wire-molybdenum-arc wire (high-temperature)-tungsten-core wire (high-temperature)-molybdenum-core wire (high-temperature)Welding electrodes are used to melt the metal. When you weld, you will typically use a welding gun, which is a transformer that transforms the electricity from the welding machine into an electric arc.
include:Tungsten-tungsten is the most common filler material of consumable electrodes. It is used for MIG welding and stick welding. For those, you should use tungsten-coated wire. In TIG welding, you will find tungsten-coated wire. They basically consist of a tungsten wire that has a coating of, say, molybdenum. The coating acts as a filler material.The main advantages of tungsten-tungsten electrodes are:They are cheap. They are easy to use. The filler material is easy to apply. The filler material is less likely to get slag on it.Tungsten-coated electrodes are the best for TIG welding. They are best for welding stainless steel, aluminum, brass, and copper.They are easily available in different sizes.
Light coated electrodes
are the most common. They have a thin coating of filler material on the surface. This coating protects the filler material from oxidation.The coating also helps to reduce the burning of slag on the surface of the weld. The coating can be applied to either the inner or outer surface of the electrode. However, the coating is usually applied to the inner surface.Lacking an outer coating, the electrode must be protected from moisture and oxidation, which means that inert gases must be used. The inert gases should be used to protect the electrode from oxidation and moisture as well; however, they can also blow off during welding.Since inert gases are expelled during welding, they need to be replaced over time. This leads to a need for replacement of electrodes.Write for meParaphraseParaphrasing Mode:StandardShortenExpandFormalCasualCreative
Shielded arc electrodes are used for MIG and flux-cored welding. They are also called shielded-arc electrodes.
Bare electrodes are used to weld in the absence of any filler material.They do not necessarily have to be consumable. For instance, tungsten inert gas welding uses a non-consumable electrode.The main disadvantage is that the electrode is susceptible to contamination. This can make the weld look dull and can increase the chance of welding defects. The other disadvantage is that the electrode can wear out quickly.TIG welding, on the other hand, uses a consumable electrode. The filler material is provided by a wire, which is manually fed.It is a good idea to buy the consumable electrode from a company that is well-known in the industry. This will ensure that you get a quality product.Write for meParaphraseParaphrasing Mode:StandardShortenExpandFormalCasualCreative
Non-consumable electrodes are used for welding in the absence of filler material.
Shielded arc electrodes
Shielded arc electrodes are an example of non-consumable electrodes. They consist of a non-consumable material, such as tungsten, that is coated with a conductive material. This coating shields the metal from the arc, which allows for a more stable arc.Shielded arc electrodes are used in manual welding. The filler material is fed manually to the welding area.Write for meParaphraseParaphrasing Mode:StandardShortenExpandFormalCasualCreative
Heavy-duty electrodes are the opposite of shielded arc electrodes. They typically consist of the same material as non-consumable electrodes, but the coating is thicker. A thick coating helps to protect the welding area from the heat and spatter. Heavy-duty electrodes are thus, suitable for welding thicker sections of metal.
TIG welding uses non-consumable electrodes. Non-consumable electrodes are the most popular type of electrodes used for the welding of non-ferrous metals. These electrodes are made from pure tungsten and a flux that is applied using a rod. It is the flux which provides the filler material.Flux is an important factor in TIG welding. It serves several purposes. It keeps the weld bead clean and the weld bead melts evenly.Write for meParaphraseParaphrasing Mode:StandardShortenExpandFormalCasualCreative
Fluxes are classified into two types, liquid and dry. The liquid fluxes are further classified into wire arc and gas tungsten arc. The dry fluxes consist of a combination of oxides, which are combined with an acid.
Carbon electrodes are made from carbon, which is considered a filler material. These electrodes have a high melting point and low resistance.Carbon electrodes are used for tungsten inert gas (TIG) welding. They are also used for welding steel, aluminum, and other metals.Write for meParaphraseParaphrasing Mode:StandardShortenExpandFormalCasualCreative
Tungsten electrodes are the most common non-consumable electrodes. They are used for welding steel, aluminum, and other metals.The tungsten electrode has a very high melting point, so it does not melt during welding. It does not require a filler metal. The tungsten electrode is fed from a welding torch.
Welding Rods and the Damaging Effects of Moisture
Welding rods are made from pure metal, typically steel or aluminum alloys. The metal is chosen based on its resistance to heat and corrosion and its ability to be worked. The metal is ground to a predetermined diameter and its surface is then coated with a melting material that will not burn or corrode. The melting material is usually tungsten, but a number of other materials can be used. The welding rod is also known as a welding wire. The melting material is called a flux. A flux is a substance, which usually consists of some form of silicate, that is added to a metal to make it easier to weld. The flux is added to the metal, as a slag or solidified material, before the welding. The flux protects the weld from atmospheric contaminants which would cause its deterioration.
The flux is generally composed of an oil or water-soluble material and an inorganic material.
Stick Welding Process Intro
The Stick Welding Process
Stick welding is a process that uses a rod that is heated and bent into a shape that fits your needs. This rod is held against the surface to be joined by a holding rod, called a stick, and a filler rod or stick is placed on top of the workpiece. The workpiece is then pressed against a heated anvil, which melts the end of the workpiece and the filler rod or stick. The molten metal flows into the joint, making a strong bond.
Stick welding is a process that uses a rod that is heated and bent into a shape that fits your needs. This rod is held against the surface to be joined by a holding rod, called a stick, and a filler rod or stick is placed on top of the workpiece. The workpiece is then pressed against a heated anvil, which melts the end of the workpiece and the filler rod or stick.
Stick Welding Techniques
Stick welding is a method of joining two pieces of metal together using a continuous stream of filler material. In this process, the filler material is usually a pure metal. Stick welding is used to join together blank plates, sheets, or panels that are used in the manufacture of automobiles, appliances, and a variety of other manufactured goods.
The most common welding method for joining steel is stick welding. In basic stick welding, a continuous wire of filler metal is directed into an arc between the two pieces of metal to be joined. The arc is created by a tungsten electrode and the metal filler material is made from a metal that has been fluxed. The arc heats the pieces of metal to a temperature where the filler material melts and then flows into the joint. The filler material is usually in the form of a wire, but can be in the form of a stick.
Stick welding is widely used by many welders.
Selecting the Right Electrode for Basic Stick Welding
In general, stick welding is meant to be a simple and effective welding technique. Because it is a manual process, it requires a person to remove the weld from the workpiece. It is a good technique for joining metals that are relatively thin and not very heat sensitive. Since the person performing the welding is the one who controls the arc and the heat input, this can be a difficult and time-consuming process. There are two basic types of electrodes used in stick welding: direct current (DC) and alternating current (AC). The type of electrode that you choose is determined by the material that you are welding. Direct Current (DC) ElectrodesDirect current (DC) electrodes are the most common type of stick electrodes. They generally consist of a copper or brass core covered with a flux that is coated in an arc-fluxing compound. They come in a variety of diameters and lengths. The size of the electrode is determined by the materials being welded.
How to read the code on stick electrodes
The code on stick electrodes indicate the following:Diameter (mm)Thickness (mm)
The first number indicates the diameter of the electrode. For example, 100 indicates that it is a 100-mm electrode. The next number indicates the type of material that is used for the electrode. For example, for electrodes made from tungsten-containing 1 percent thorium, the code will be 100-1-2. The last number indicates the thickness of the electrode. For example, 100-1-2.5 indicates that a 100-mm electrode will be made out of tungsten, with 1 percent thorium, and with a thickness of 2.5mm.In some cases, the code on the stick electrode may be different from the code on the label on the electrode. This may happen when you purchase electrodes from a welding supply store.
Tungsten electrodes and their different kinds
The second type of non-consumable electrode is made from tungsten. It can be uncoated or coated with a tungsten carbide or tungsten carbide/silicon carbide mix.Write for meParaphraseParaphrasing Mode:StandardShortenExpandFormalCasualCreative
Tungsten electrodes are used for TIG welding. They are more popular for welding metals because they can withstand high welding temperatures.These electrodes are used for both welding and cutting. The welding process uses a tungsten electrode, whereas the cutting process uses a tungsten electrode.The two electrodes are similar, but there are differences. The welding electrode is made out of a harder material, whereas the cutting electrode is made out of a softer material.