Archive for May, 2009

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Types of welding tools

Sunday, May 31st, 2009

What flashes across your mind when you hear the phrase ‘welding tools’? There are various categories of welding tools that you will find very useful. What is welding? It is an effective technique to join metallic parts through application of heat. This technique was discovered during attempts to manipulate iron into useful shapes. Welding joins metals for making them firm. It is also used to make the metal bond so tight that they never get free. One can use different varieties of bonds for different purposes. It all depends on the type of welding that is being utilized. Want to know the various categories of welding tools? Then here we have given detail description of them.

Gas welding happens to be a great kind of welding that makes use of a flame created from ignited gas. This also creates the required welding heat. Another welding tool is propane torches that people utilize when they wish weld the pieces by sweating the joint. They also this welding tool when they wish join pieces of metal using solder. Oxyacetylene torch is another wonderful welding tool, which work at slightly higher temperature. This method is often recognized as the one of the universal welding methods. This tool is utilized when you require hot flame. This torch can weld different things without any difficulty. However, one has to use the right metals and the right specs for this purpose.

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Details about Stud welding process

Saturday, May 30th, 2009

Most people believe that there is only one welding application. However, in actuality there are different welding applications. One of the many welding applications is the stud welding application. In this process, a bolt is welded on another metal piece. This welding process includes utilizing stud welding equipment to feed the bolts in the spot welder.

Stud welding involves joining the stud for a flat plate and utilizing the stud as an electrode. The polarity, which is selected for the specific stud welding application, can depend on the kind of metal that is utilized. For instance, aluminum needs direct-current electrode positive and steel demands direct-current electrode negative.

The weld nuts that are utilized in stud welding process usually have flange with some kind of small numbs which melt during the process to form the weld. Another important aspect of this kind of welding process is the utilization of flux known as ferrule. A ferrule is a ceramic ring, which can concentrate the generated heart protecting oxidation as well as retaining the melted metal in the wished weld zone.

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Plasma Arc Welding: For fine-tune jobs

Wednesday, May 27th, 2009

The use of plasma arc welders has been around since the early 1960’s; and still today, this method of welding is useful for applications that no other type of welding can handle. Plasma arc welding offers more control to the job being performed and in lower current ranges. Primary applications of plasma welding include miniature and fine tune applications, especially when large quantities of welds are required.

The process of Plasma Arc Welding:

Plasma is a gas, which when heated to very high temperatures and ionized becomes electrically conductive. The plasma is used to create the arc that is then transferred to the item being welded. As with other types of welding, the weld is made by the metal of the piece melting under the heat of the arc applied to it.

The use of plasma welding produces a high quality and fine tune weld because of the design of the plasma welder itself. The torch is composed of a Tungsten electrode within a copper nozzle. In particular, the small opening at the end of the nozzle is what enables the plasma welder to be used for miniature welding jobs and fine details. Because the equipment produces a high intensity heat delivered to a small easily controlled area.

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Purchasing A TIG Welder

Tuesday, May 26th, 2009

TIG welding may be the slowest type of welding out there. But, it is also most precise and easily controlled. The most difficult problem that consumers face when buying this type of equipment is finding a setup that meets their needs and their budget at the same time.

Typically, TIG welders are divided into two categories—rectifier and inverter. Rectifier welders have been the most widely used for TIG work for a long time. These machines use a transformer or coils to generate the current used for welding. Inverters on the other hand have only been around for about the last fifteen years. But, they are growing in popularity and demand. A circuit board is used to generate the welding current in the case of inverters. One advantage of purchasing an inverter TIG welder is that they use less power than their counterpart, the rectifier. Consider the features of the following types of TIG welders before making a decision about which one to purchase.

Small Inverter TIG Welders (110-230v)

Most of these TIG welder systems come with the option to operate on 110v or 230v. However, the 230-volt option produces better results with a stronger and more controlled weld bead. Below you will find some options for available Small Inverter TIG Welders.

Thermal Arc 85: This is a very basic 110-volt welder that is a scratch start, meaning no remote start and a hand or foot option can be added. This welder is only DC and will only weld steel and stainless steel when in TIG mode, but can be used for some other applications in stick mode. Because of the price range and portability of this model, it is an ideal option for around the house and emergency welding situations.

The Miller Maxstar 140 series: Available in 5 different packages, so there are many more options to choose from. Again this is DC only so no aluminum TIG welding.  A perfect choice for around the house or where a small portable welder would be useful as in HVAC and restaurant repair and, auto body sheet metal repair; the Maxstar can operate on 110v or 230v.

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Repairing Aluminum: The correct way to get the job done

Monday, May 25th, 2009

If you are in the position where you have aluminum tools or parts that have become damaged by cracks or a broken joint, consider welding the item with a TIG welder. This list of steps and suggestions for how to complete a successful aluminum repair can be a handy guide. Read through it and keep it around for reference in the future.

First, you should consider whether or not the damaged item in question really merits repairing. Is the tool or part easily and inexpensively replace. If this is the case then you may want to replace it rather than repairing it. Because, although TIG welding is an effective process for aluminum repair, it is tedious and time consuming to do it right and ensure a strong weld that will actually last and hold up under stress.

GTAW and TIG welding are both acceptable forms of welding for aluminum repair. However, we will refer only to TIG welding in this article. Many of the steps for preparation of aluminum are universal and can be translated.

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What Are The Advantages Of Opting For Plasma Cutting Machine?

Saturday, May 23rd, 2009

The first and most obvious advantage is that plasma cutting can be done on practically all types of metals. Using oxygen to burn the metal is possible only if the metal supports burning. If the metal is burn resistant, that is to say it does not support easy oxidization, using oxyfuel will be counter productive. This is true in case of stainless steel etc. If you use oxyfuel to burn and cut the metal, you will have to spend a lot of time on the job and it will be the most inefficient way to cut the metal.

On the other hand, plasma cutting machine is not dependent on the affinity of the metal to oxygen. It will work irrespective of whether the metal supports oxidization or not. This is because the cutting is not done by a flame. Rather, it is done super heated air which has turned into plasma. Since plasma will cut all metals irrespective of their characteristics, this method is perfect for cutting all types of metals.

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Use Quality Welding Helmet When Undertaking Overhead Welding Projects

Friday, May 22nd, 2009

The human mind is capable of coming up with the strangest ideas. The finished product never tells us how difficult it was to construct the same. This is especially true in case of construction of structures. You may have to weld joints at the most unlikely places. This cannot be avoided as these joints, in most cases, are the ones that hold the entire structure firmly in its foundation.

Now you cannot refuse jobs because it requires performing welding operations in uncomfortable positions, can you? The smart way out is to make preparations beforehand and make the job as uncomfortable as possible.

Safety is a very important factor as far as welding and other such activities are concerned. Safety becomes every more important where you are performing welding at a height or where you are performing overhead welding using a stick welder.

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Advantages Of Opting For An AC DC Welder

Thursday, May 21st, 2009

Our world, as we know it today, is literally welded together by welding machines. Welding is the cheapest and most effective method to bind two metals together without any loss of strength or weakness in the bind.

Your business will gain a lot by adding an AC DC Welder to the welding equipment that you already own. Some of the advantages are listed below

- Better value for money

Buying an AC DC Welder along with your other welding machines will increase your ability to provide better value for money to your customers. This welding equipment is usually available as a portable machine and this enables you to provide different services on the go.

- Versatility

The range of services that you can provide drastically increases if you opt for the portable AC DC welder. You can now undertake maintenance work, repair work, fabrication work, construction and erection work and hard surface work including cutting and piercing holes in steel

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Why Is It Called The AC/DC Welder?

Wednesday, May 20th, 2009

If you have a need for welding equipment and have a job that requires several different welding processes. You might benefit from using a AC/DC welder or a machine that is capable of providing options in your power output or amperage. This means that you are able to weld using your initial welding process and then change up to another welding process using the same machine.

The AC/DC welder is a durable and heavy-duty piece of welding equipment. You can purchase one that is portable, so that you can carry it to whatever work area you desire. This portability feature is one greatly desired for those who work in areas where the welding source might be hard to reach. But, you must make sure that the power supply cables aren’t too long, because if they are too long, it may cause a hazard for the welder.

This AC/DC welder will also bring you options in amperage. The first number is for the AC or alternating current. You will see another number for the DC or direct current, for example: (240 AC/180 DC Welder). These numbers tell you how high your amperage can go for each set of power choices.

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What You Should Know About Aluminum Welding

Tuesday, May 19th, 2009

We all know that the welding profession is one of science and patience. It requires some scientific knowledge to know which electrodes you will need to purchase for your job. You will need to have a slight bit of knowledge to be able to know what size you will need, what type of metal will work with which type of electrode. You will also need a vast amount of patience, especially if you are a beginner.

There are several types of welding processes along with different types of metals that can be welded. But, when it comes to aluminum welding process, it is most sensitive. You must apply the correct amount of heat to the welding source or experience burn through. You must make sure that your welding source material is free of any debris or other chemicals such as; aluminum oxide. Any chemicals left on the surface of the work material will deter the welder from producing the outcome desired, they may in fact bring about adverse effects to the work materials.

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