Welder World Blog

Posts Tagged ‘rod’

Welding rod is commonly known as filler metals in context with the technical terms. It is considered as a metal which is used for the welding procedure in order to fill up a joint that needs to be fixed together. Generally, the overall procedure of welding is done by melting up the work pieces and adding up a filler material in it, which is often a welding rod. This is done in order to create a pool of molten material that cools down and becomes a strong joint.

Also known as electrodes, welding rods usually come in four types, that involve covered welding rods which is used in the system of metal arc welding. The coating involved in the process of electrodes mainly contains certain compounds such as calcium fluoride, cellulose, iron powder and rutile. The method of rutile coated rods give a good appearance to the weld and create good quality weld. Even large number of stainless steel rods or electrodes are used in order to weld steel work pieces with the carbon steel work pieces.

Bare welding electrodes, on the other hand are used for the gas metal arc work. These kinds of electrodes contain several deoxidizing metals like silicon, manganese, titanium, and aluminum that help prevent oxygen porosity. Moreover, they even contain some sort of denitriding metals such as titanium and zirconium for avoiding the nitrogen porosity. Such rods are generally available in the diameters that range from 0.7 mm to 2.4 mm. However, it is largely determined by the kind of metal and application.

In addition, the method of tubular welding rods, that are in the wired form, are usually used for the flux-cored arc welding. These rods contain the alloys of mild and low alloy steel, stainless steel, and high nickel. Some are even made from wear-facing or surfacing alloys. What is more is that welding rods can also be divided as fast-fill and fast-freeze electrodes. Fast-fill rods are designed in order to melt quickly, while the fast freeze rods are designed to solidify quickly. It is therefore, very important to make use of proper welding rod in the welding process as it is the major factor that will determine the nature of the joint.

The theory behind keeping an arc going is, the electrical current is forced between the welding rod tip and the steel you are welding. If you want to be a successful welder you must be able to strike an arc and keep it going without even thinking about it.

The 2 most common ways of starting your arc are by tapping and scratching your welding rod to the steel. Scratching seems to be the most natural way used by beginners.

Scratching is when you swipe the rod across the steel as if you were trying to light a match. Once the rod makes contact with the steel, the arc starts. The only real reason for scratching it to get it started is so it won’t stick to the steel since it is in motion. The trick then is to locate where you want to weld and try to keep the arc going. This takes some practice to get the hang of it.

Tapping is basically stabbing the steel with your welding rod. This is better for starting your rod in the correct welding location, but it is harder to keep the rod from sticking and still maintaining an arc. The natural reaction is once the arc strikes, you will want to pull it away to keep it from sticking. The only problem is, beginners tend to pull it too far away and lose the arc. This can go on and on and is actually pretty funny to watch someone doing this. But we all need to remember we were new at one point also.

Sticking of your welding rod is caused by the rod melting to the steel before it is pulled away slightly to maintain it’s arc. I won’t go into how far away it should be from the steel since it is dependent on what type of rod you are using and the amperage you are welding with.

These are the basics and should give you an idea of how to strike an arc. Just remember that it takes practice and patience to get good at it. One day you will grab the stinger and it will all just click in your head. It will almost start to feel natural, then you will know it’s all coming together.

Related Types Of Welding Rods Articles

It is obvious that Arc welding is considered as the major and an essential part of all the industries involved in designing and infrastructure. But what arc welding is? It is a process of fusing two metals by applying intense heat. This welding type used welding power supply in order to create an electric arc between base material and electrode. And, the final product that develops contain all the properties, just as in metals. The term arc welding is named because the heat that is used during the process of melting the metal at the juncture of joining is caused by an electric arc. With the help of a mechanically guided electrode, carrying the current between tip and the joint leads to cause of electric arc. Listed here are some of the arc welding tips and techniques for the beginners.

- Safety Precautions
Remember that before commencing with any of the welding methods, you need to adopt proper safety precautions. During welding harmful UV rays and sparks are produced that can damage eyes and skin, so it is important to wear safety glasses to get rid of any kind of damage. Also, wearing helmets during arc welding is mandatory. After all, self protection is a must to reduce risk of fire accidents and electric shocks. So before starting with arc welding, make sure that you have every safety gear ready with you.

- Rod and Arc Setting
This is the one of the most crucial and important parts of this procedure. And, if you are starting with this welding type for the very first time then it is better to do it on a rusty metal work as it is much more tolerant to the rusty surfaces. Also, make sure that your current setting should be in the correct position. And, if you are making use of 2.55mm rods, then make sure to use only 80 amps current supply. Also, polarity settings have to be adjusted. Polarity setting is done in such a way that the rod is positive and the earth is negative.

- Arc Welding Process
At first you need to turn on the welding machine. An electric arc is being generated when the welding rod comes in contact with the juncture of fusion. Generally, Tap Starting and Scratch Starting, are used for the process of electric arc generation. In Tap starting method, an electrode is used to tap on the work that removes excessive flux from electrode tip, which meanwhile creates an electric contact to generate the arc. While in scratch starting method, the rod is made to scratch against the surface of the work slightly and as the spark is generated, the rod can be lifted off. Also, remember not to put extra pressure in the method, because through this the rod might get stuck to the work medium.
Stick welding is known as the process that makes use of a covered electrode called stick. Also, known as Shielded Metal Arc Welding or SMAW, stick welding is the most widely used method today than other welding methods. But, now the question is how do they work?

The equipments used:

Stick welder contains circuitry inside the machine, which enables to carry a specified amount of voltage, therefore creating an arc. And, this is the reason why these welders are sometimes referred to as ARC welders. Totally relying on the application as well as on the machine, the current can be either alternating or direct current. The circuit board, which is present inside the welder enables it to ground the negative to the positive by creating heat without burning the electronics.

Shielded Metal Arc Welding (SMAW)

The welding procedure with the help of stick is called shielded metal arc welding or SMAW. The welding stick is a metal, which is coated with a flux material that burns off when the arc is struck, thereby creating a gas that protects the weld created. This type of welding is the most preferred method for the purpose of large metal structures like building framework, etc., because of its versatility and penetration ability. Although, today, other welding process like Flux-cored welding, or wire feed, is gaining more popularity, but stick welding still dominates the field.

The Weld:-

Factually, there are two types of leads that occurs in a stick welder. One lead is the negative clamp, and the other is the positive lead. In positive lead, the consumable metal stick is placed, while the negative lead is clamped on to the metal that is to be welded. During the process, when positive lead containing the stick comes in contact with the metal, an arc is created that further burns into the metal surface. Throughout the arc burning process, the stick is also burned, which thereby creates the weld. And, this is why welding is considered different than that of soldering process.

Safety Measures

While getting indulged in the process of welding, it is imperative to consider certain safety precautions to get rid of the risky environment. Always make sure to wear a welding hood when striking an arc. It is known that harmful UV rays are produced during the welding that can lead to burn in the eyes, so it is advisable to wear suitable goggles during welding. Also, wear leather welding gloves and a long-sleeved leather jacket, as well as heavy footwear and jeans. Remember, to remove all the inflammable materials from the work area before welding. So, consider the safety measures in order to get clean and successful welding.

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Don’t worry too much about how your welds look at first:
* While you’re improving electrode control, you’ll be learning more about different welding job situations.
* Plus I’ll tell you WHY it’s important to have good rod control.
* After you read these tips, THEN you can practice your welding rod control techniques.
* Whether you swing a golf club or a bat, if you don’t practice in correct ways, the results can be at least EMBARRASSING!

Let’s talk about arc pressure and gravity:
1) Arc pressure is produced by the voltage from the machine as it’s pushing the molten metal outwardly.
2) The pressure will vary depending on machine settings, rod size, & the amount of arc gap.
3) Gravity not only effects the direction of the molten metal, but also it’s going to try to make your puddle drip.
4) If you’re arc welding in a flat position, you mainly just worry about keeping the rod at right angles to the work-pieces, & tilted away from the puddle, to help control the puddle & the slag. (And that will help you to SEE THE PUDDLE!).
5) If you’re going to weld in a vertical position, you need to aim the arc up-ward to preheat the metal & to help keep the puddle from dripping.
6) At the same time, in vertical welding, you no longer need to worry about slag, because gravity is keeping it out of the way.
7) For horizontal positions it’s a lot the same. Gravity will try to drip the weld, so you aim the arc upwardly.
For overhead jobs you keep the rod nearly straight up for the same reasons. You don’t want to do any weaving in overhead welding, instead just use straight “stringer” beads.

Pipe welding:
* Pipe welding is rather unique, in that it involves all positions as you go around it. You will gain real electrode control experience in pipe welding!
* Horizontal welding on pipe can be tricky too, because you need to keep changing the rod angle as you go around.
* Save overhead welding practice for last. Get used to ELECTRODE CONTROL & amp settings in the easier welding positions first.

General tips:
* Learn to keep the arc length as steady as possible, plus keep the rod angle steady.
* Weld in a straight a line. This helps to give your welds to look better, and to give them more strength.
* Use both hands to steady the rod. Either place both hands on the rod holder, or one hand on the rod itself, until it gets too short (or until the rod gets too hot).
* Work on a steady speed to keep a uniform puddle shape. An oval shape is good, but don’t let it get too pointed. A round shape may be too wide, unless you need a wider or heavier bead for the job you’re doing. You’ll soon be able to judge that your welding speed is right for the job size & situation.
* Finding a good amperage setting for the job at hand, will help you to concentrate on getting a good weld, & not be fighting sticking rods, or having the rod burn through the work-piece.
* Learn to hesitate slightly at the start of your welds to ensure that the “puddle” forms sufficiently.
* Also pause a bit, at each side of the bead, when you’re doing a weave weld, to make sure there is good penetration.

REMEMBER, Don’t worry too much about how your welds look at first! Now start practicing!

Joel Ort of Miller Electric Mfg. Co. shares his tips for MIG welding success. Placing the focus on MIG technique, Ort’s useful comments are applicable for many garage applications involving farm and automotive repairs. Topics include: simple setup, butt joints, T-joints, lap joints and horizontal, vertical and overhead welding positions.

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HDPE Pipes Repair Solution

High Density Polyethylene (HDPE) is a term that is used with pipes and linings. High density polyethylene pipes are more durable then A normal polyethylene pipe as it has low density. A number of people have started using HDPE pipes for its durability and long-lastingness in their home and offices. Modern pipe liner uses HDPE pipe repair and maintenance method with traditional resistance process as well. HDPE pipes have a thicker lining and last longer, and thus are getting popular everywhere.These pipes are light weight and can be installed easily at any place when needed.

HDPE pipe repair :

Even though they are durable but to protect HDPE pipes we must acquire knowledge on professional HDPE repair & installation as a pipe leak can happen anywhere, any time and without warning, and can threaten to shut down your entire operation, resulting in costly downtime and product ion loss.

(1) Instant Effective Pipe Repairs :

There’s no better solution for instant effective pipe repairs than Rapp-it Pipe Repair Bandages.Rapp-it is a roll of fibreglass bandage impregnated with water-activated polyurethane resin. Every pack of Rapp-it includes the bandage, a stick of epoxy putty and a pair of gloves. It’s simple to use with no mixing or measuring required, yet results in a strong, superior pipe repair. You simply immerse the bandage in water for 10 seconds, and then apply by wrapping around the damaged pipe area. A successful pipe repair can be achieved in only 30 minutes.

(2) Long Lasting OR Permanent Repair Method :

There are a number of methods to pipeline repair that include weld and non-weld, numerous non-exhaustive, external and internal replacement methods.

(1) Plastic extrusion is the most popular method Among all as it is the efficient and effective way to access pipelines without disturbing your premises. And,

(2) To prevent leakage you can use HDPE pipeline liners but these liners must be installed by Pipe Liner Specialists.

(3) The open-cut excavation method is also used for the pipeline repairing, however it is costly and requires loads of time.

(4) Another method of HDPE pipes repair is the trenchless pipe rehabilitation method. This procedure helps in to stop any kind of existing leakage and the further harm of the pipe lining system.

While selecting the method of repairing HDPE pipeline you must keep the safety issues in mind and make sure you go for Professional HDPE Repair & Installation for long lasting results. Ask for services of Pipe Liner Specialists for better results.

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More Hdpe Welding Articles

Have you ever watched American Chopper or Overhaulin or American Hot Rod and thought man I wish I could fabricate something out of metal like those guys?  I constantly wish I had the skills and equipment to do these things.  As a high-schooler I was exposed to the skill of welding while working for a commercial HVAC sheet metal contractor and fabricator.  When I had the opportunity to fabricate something it always brought a smile to my face.

Now that I have a desk job working as a business manager, I no longer have access to these amazing tools that I once did, although i still would love to be able to make what ever I want out of metal.

I think the biggest deterrent to this has been the entry price to the equipment that I would want/need.  A little over 0 for a decent Mig Welder and I will be off and running right? Well,  mig welding is a start, but what about a plasma cutter to cut the metal, and what about a tig welder to weld metal that is too thin to weld with a mig welder, and what about welding Aluminum.  To obtain all of these types of welders would run in the range of 00 – 00, but the evolution of the welder has created machines capable of all of these processes in one and at a much more affordable price.

Everlast Welders has been developing a line of Multi-Process welders that can Tig Weld, Arc Weld, and Plasma cut all from the same compact machine.  Independent tests have shown that one can achieve amazing results when put up against the more prominent american made competitors. For about one third as much as it would have cost to get these functions individually I can now have in one great machine. Check it out and see.

So now I have no excuses looks like this winter I will be out in the garage doing what I love.

Trying out the longevity multi process welder/plasma cutter. this is my first time with this machine and I think it’s good. I still need to get the hang of it and practice but I think I can. I still need to read the book so I don’t know if I even set it correctly but it was better than I thought it would be. it can also tig weld and is a stick welder.
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Nirmala Engineering Works is a hardcore company which has established itself as a marked up manufacturer of Wire Drawing Machines like Rod Break down Machine (RBD- Tandem & Step cone type), Intermediate Wet Wire Drawing  Machine, High Speed fine wire drawing machine, Fine wire drawing machine upto 50 swg and wire drawing accessories like Butt Welding Machine, Wire Annealing machine, Wire dies, Pointing cum threading machine, Spooler, etc suitable for Copper, Aluminium, Nichrome & Brass Wire.

Nirmala Engineering Works is a huge company engaged itself in the manufacturing of all types of wire drawing machines. It offers the most inclusive range and competitive price of Wire drawing machines to its customers. Nirmala Engineering Works focuses on present need of the wire and cable industry and provide solutions to all Industry’s different sectors through production of all types wire drawing machines like Rod Break Down Machine, Intermediate Wire Drawing Machine, Wire Annealing Machine and wire drawing machine accessories etc suitable for Copper & Aluminium wire.

Nirmala Engineering Works has a good industry experience which helps them to manufacture world class Wet Wire Drawing Machines. Nirmala Engineering Works has manufactured and supplied all types of wire drawing machinery to its local as well as international customers based world wide.

Rod Break down Machine manufactured by Nirmala Engineering Works is in great demand these days by whole Wire and Cable Industries. Similar case is with other wire drawing machines as these industries serves as a core base to the industrial era.

Basically , There are two models of Rod Break Down Machine namely- Tandem type & Step cone type. These two models are identical  except  the  number  of  Rod Breakdown Machine they use . Which rod breakdown machine is most suitable to you depends on the inlet diameter of the copper & aluminium and the Diameter of the finishing wire you would like to make.

Under normal situation , the RBD inlet should be 8.0mm of copper or 9.5mm for aluminium, the rod breakdown machine is outlet should be from 1.30mm to 3.5mm. By the evaluation of inlet and range of the outlet, we also calculate the Rod Breakdown Machine Sequence Table for our customers. This rod breakdown machine is a valuable function since we guarantee our customers can have the Rod Breakdown Machine sequence table with the minimum number of Rod Breakdown Machine. Rod Break Down Machine guarantee the minimum material loss. Which means, you save not only the materials (either copper or aluminum) but also the Rod Breakdown Machine (because it last longer) . Except for this , you also save money from somewhere invisible – electricity . This rod breakdown machine  is the one most people neglect.

Nirmala Engineering Works has been serving the industrial zone from the last 25 years with its world class wire drawing machines like RBD, Aluminium wire drawing machines, Intermediate Machines, Rod Break Down Machines, Annealing Machines.

Nirmala Engineering Works manufactures the wire drawing machines to serve the industrial area with world class machines through deep research and development. It manufactures all type fine wire drawing machines, like Rod break down machines, Annealing machines, Intermediate machines, High speed wire drawing machines.

Brazing is an effective thermal joining process commonly used in engineering. It is often preferred over other process like welding. Brazing can join almost all the metals and alloys. In this process, a molten brazing alloy is drawn into a capillary gap between the metals being joined. Many forms of brazing alloys are used for fulfilling this requirement. Brazing rods are perhaps the most popular forms of brazing alloys used world over by professionals.

What is a Brazing Rod?

Brazing rod is a piece of metal in the shape of a rod. It melts during the brazing process and attaches to the separate pieces of metals in order to join them together once cooled.

What are the Metals Used for Making Brazing Rods?

Brazing process has the ability to join different metals and components of dissimilar size and mass. However, for this, the perfect form of brazing alloy (filler metal which melts above 450˚C but below the temperatures at which metals being joined melt) has to be present. Therefore, brazing rods have to be made from different metals like aluminum, silver, steel, bronze etc.

What is Flux Coated Brazing Rod?

There are many types of brazing processes which are conducted in different atmospheres. In the one which is not contained within an inert or reducing atmosphere environment (for example a furnace,) flux is needed to prevent oxides from forming when the metal is heated. Not only this, flux also cleans up any contamination that is left on the brazing surfaces. Flux too comes in various forms like flux paste, liquid, powder or pre-made brazing pastes that combine flux with filler metal powder. Sometimes, flux is applied to brazing rods either in the form of a coating of flux or a flux core. This flux flows into the joint when the brazing rod is applied to the heated joint and is displaced by the molten filler metal entering the joint.

To know more about brazing rods as well as other forms of brazing alloys, read Brazing Rod

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