Posts Tagged ‘Welding Equipments’

Equipments of welding

Thursday, June 9th, 2011

Most people know the definition of welding by now. At least they should know welding is a term used in manufacturing industries which manufactures heavy and other steel related objects which we are most likely to use on a day to day basis. Nonetheless, welding is a process where two or more metal pieces are joined together with the help of a molten solution. The molten solution on cooling down forms a strong bond between the work pieces. This whole process depends heavily upon electricity and high heat transfer to be a successful one.

As mentioned earlier it is impossible to perform the art of welding without electricity and high heat energy transfer. As such there are certain equipments used in the welding which allows us to perform the necessary. They have actually revolutionized the manufacturing industries and improved the quality of welds beyond measures. Welding equipments as such involve a welding gun, a generator, spool with a nozzle, gas and the work pieces. Gas is necessary for running the generator which gives the necessary electricity and the welding gun along with spool and nozzle allows you to focus the heat energy upon the work pieces. Apart from these there are also welding safety equipments such as welding goggles, shield or mask, welding apparels and gloves etc.

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The Electrically Hazardous Areas While Welding

Monday, May 2nd, 2011

While you get to start welding, you will have to know about a few important stuffs like Safe Work Practices, Primary Electric Shock and precautions, Secondary Electric Shocks and precautions and more. This article is a short lesson about the Electrically Hazardous Areas that you will have to know before starting to weld alone on your home. If you are still practicing welding, it is advisable for you to learn all the possibilities in which one might fall into an accident and avoid them wisely.

Generally arc welding is electrically hazardous under the following conditions. If the location in which the welding is carried out is damp or wet, or on metal floors or surfaces, or if it is in restricted body positions of the welder when he is sitting, kneeling or lying, the probability of Accident is more.

The welding equipments which are best for carrying out arc welding under electrically hazardous areas is when you use Semiautomatic DC Constant Voltage welder or DC Manual welder or AC welder. All of them must be used with Reduced Voltage Control.

If you experience a shock the first thing you should o is to check your equipment for any malfunctions like disconnection in input power and take the machine to a qualified electrician to resolve it.

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Standard parts of welding equipment

Thursday, April 21st, 2011

The types of welding equipment differ from model to model. However there are some standard parts that have to remain the same. The first such part is a torch.

The torch usually is built in the welder. However you can also purchase a euro torch separately. This is done for your specific purpose. It is also available at a relatively cheap price.

This is also a good idea because torches that are bought separately will last longer than the ones that come with the welder. The second standard equipment is the gas regulator. The gas regulator is used to regulate the flow of gas and the pressure. You can either get single or twin gas regulators.

Twin gas regulators will help you to regulate the flow rate of the gas as well as the pressure. However you should also remember that the twin gas regulators will be costlier than the single gauge ones.

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Metal Gas Inert Welding Basics

Friday, April 15th, 2011

MIG welding is also known as metal gas inert welding? This welding process requires a constant supply of voltage and current from a direct source.

This welding process is mostly used for industrial purposes. This is especially true for the automobile industrial process. This process makes use of a consumable electrode that also uses a shielding gas to protect the area of weld. This welding is not used outdoors or areas which would have air volatility. A welding gun is used in this process to weld two metals together.

This welding technique can be used to stainless steel aluminum and cast iron. This type of weld makes for very strong joints between two metals. This is one of the reasons why this type of welding is mainly used for industrial purposes.

Also most industries have a direct supply of current; therefore it is not a problem to supply the welding equipment with constant direct current.

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Leak test in welding

Thursday, April 14th, 2011

A leak testing in welding is done to makes sure that no gas leaks out from small holes and defects in the pipe. The test is done by first passing air or high pressure gas through the pipes.

The pipes are them submerged under water. If there are leaks present in the pipe, there would be bubbles on the water. The position of the leaks can also be determined by the position of the bubbles of water. There are times when a liquid penetrate is also used to determine leaks.

The liquid penetrate works as a marker for the leaks in the pipe. If the welding pipe is handling sensitive gas then the specific gas detectors can be used to detect leakage of those gasses in the air.

Non destructive inspection and quality control can be used to check for leak in welding pipes. This way the safety of the welding system is maintained.

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Various Generators for your welding

Monday, April 11th, 2011

Welding is the art wherein two or more metal or alloy work pieces are joined together with the help of heat energy and electricity. A molten hot solution is allowed to settle down upon the two pieces which is then allowed to cool down to form a strong between the pieces. Thus from the above definition, it is very clear that without heat energy and electricity it is undoubtedly impossible to weld components together.

This electricity required for welding is providing by the different generators which forms an essential part of the welding equipments. When it comes to generators, you’ve got diesel generators, and gas generators.

Gas generators are cheaper and predominantly lightweight. The fuel for running the generators is readily available and thus very easy to come by. Gas is cheaper than diesel fuel. They run more quietly than the diesel counterparts and they are suitable for small and portable applications.

Diesel generators on the other hand also have readily available diesel fuel. They are expensive than gasoline, but then they consume much less fuel for the applications and thus it is actually a more cost effective choice. They do not use spark plugs and thus invariably much safer to use than the gas counterparts. It also doesn’t evaporate like the gasoline.

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An insight into CNC plasma cutters

Friday, April 8th, 2011

Plasma is a state of matter found only at high temperatures. Plasma cutters are welding equipment which uses this state of matter to cut electrically conductive materials very quickly and very precisely. CNC plasma cutters have revolutionized the field of welding in several ways. They used specialized software that controls and directs the plasma torch. It incorporates speed, accuracy, efficiency and repeatability for the plasma torch.

The plasma can reach temperatures as high as 30,000 Fahrenheit and very easily cuts through 2 inches of metal. CNC plasma cutters are even more efficient along with the abilities of plasma mainly because of the fact that they are driven by computer numerically driven controlled software. CAD/CAM is integral part of each CNC machine. CNC assures precise handling of the machine and exacts the distance between the plasma nozzle and metal sheet. It also includes nesting capabilities which makes the plasma cutter even more efficient.

Plasma cutters come in different shapes and sizes. The only thing that differentiates among them is their construction and the components. High quality units have solid, heavy-duty, fully welded unitized construction. They can be quite expensive. Lesser expensive equipment is less stable and thus leads to lesser accurate plasma cutting. All together it will be a less efficient machine.

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Rules of Welding

Monday, April 4th, 2011

Welding is a very easy thing to learn about. However extreme care ought to be taken while performing for providing better results as well as working in safe manner. Welding in general can be quite hazardous without proper protection. There are some basic rules you need to follow when you venture into the welding field. These rules should never be ignored. There are three basic rules which ought to be followed no matter what and it certainly validates the statement “ignorance is bliss”. These three rules are also known as the three Golden Rules of Welding.

They are:

•    Joint preparation is critical
•    Welding machine set up for the task is the key to a smooth weld
•    Comfort is more significant than technique

Most people focus on the technique and they rely heavily upon it for successful outcomes. Joint set up is the initially critical part for producing sound quality welds. What you feed is what you get out and improper setups screws even the best of the lots. Proper machine set up makes up for the lack of skill levels in the technique. Finally and not the least, comfort is something everyone ought to pursue in welding no matter what techniques you choose to carry out the task. It helps you concentrate better and provide better results.

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Safety while handling welding equipment

Monday, March 28th, 2011

When you are setting up a welding setup, you should make sure that you have safety equipment also ready. The most major accidents happen in welding because of the lack of safety equipment.  The process of welding is relatively simple but the risks that are associated with welding in terms of safety is high. There are always molten metal pieces flying around that could cause injuries. Also looking directly at the welding arc can lead to defects in vision as well as blindness. The following welding equipment is essential while welding.

Welding gloves- protects the hands from the arc as well as sparks. These gloves are also eclectically insulated to prevent from electrical shock.

Welding shield- protects the face from the arc and from sparks. Also the shield has a tinted glass attached through which the work is viewed. This prevents the damage to the eyes.

Insulated boots- This cuts of the body from acting as an earth so that the current does not flow.

A fire extinguisher should also be always kept at the work place to prevent any accidents.

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Tips for Field Repair

Tuesday, March 22nd, 2011

It is important to have the best of quality equipments and immense knowledge in welding along with at most concentration when we are working with welding applications. Selecting proper engine driven welding generators, plasma cutters and other repair tools helps you to prevent downtime by fixing repair works right at the first time.

Equipment repair is adds up to your vows more compared to the complications you encounter while you weld. Every minute your machine turns down is a minute of lost time and minutes turn to hours when servicing those machines. Immense knowledge and experience in welding enables you to estimate the right kind of tools you always would need for the job and helps you to reduce downtime drastically and finish off the work quickly. At the end of the day your intelligence and quality of equipments predicts the outcome whether it’s a profitable one or not.

In order to finish off the field repair there are five basic steps you need to follow;

1.    Cut out broken steel with Oxy-fuel, Plasma or Carbon arc Gouging. This is the initial step         when  it comes to field repair. Most contractors have oxy fuel equipments for cutting, brazing, soldering, and preheating welding surfaces
2.    Match and cut replacement steel. Match your equipments based upon their strengths and  replace them. Cut your steel to its required size.
3.    Preheat to eliminate cracking. Fill the replacement steel to find irregularities and check its fitting. After achieving proper fit, preheat the surface with oxy-fuel equipment.
4.    Electrode Selection and Welding Technique. Mostly stick welding technique is preferred.
5.    Select your welding system. This factor depends upon the electrodes you have chosen in the previous step.

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