Posts Tagged ‘Submerged Arc Welding’

Tips for arc welding

Wednesday, January 26th, 2011

Introduction:

In industries the arc welding playing the vital roll and it is more helpful in welding industries. Arc welding is used to make the machines in good shape and it works for more years depend upon the usage of the machine. Arc welding is a metallurgical procedure for two metals fusing by intense heat at the moment of fusion of the two metals.

Tips for arc welding basics for beginners:

Safety measures for arc welding:

In the initial stage for starting the welding works the welder should strictly follow some rules and regulations.

1.    Eyes and skin should be fully covered because the UV light is discharging from electrodes while welding.

2.    During arc welding use helmets compulsorily. To prevent the risks. The risks like fire accidents and shocks so the welders have to strictly follow the rules and regulations.

3.     And keep one bucket full of sand, welding helmets and gloves to start welding process.

Rules for arc welding:

Keep the welding machine on and at the moment of welding the welding machine should touch the fusion of the electrical circuit is fulfilled and the electric arc is produced. There are two methods of electric arc is there they are tap starting and scratch starting.

Rules for organizing the joints:

In arc welding while welding the impurities and dirt will be removed and it will modify the transmission. And the welders have to create joints for each arc welding it is more important for arc welding. This is more useful way for avoid some cases like cold joints and it is more helpful in creating the fusion more powerful.

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Technique used in Gas Metal Arc Welding:

Tuesday, January 25th, 2011

Gas Metal Arc Welding (GMAW) otherwise called the MIG welding is partly an automatic process where the welding arc is constantly fed with shielding gas and wire electrode. This makes the welding technique very easy and simple when compared to TIG welding where the welding torch and filler wire is held in both hands which making it a chaotic process. MIG welding is made easy with proper positioning of the welding gun by maintaining an appropriate stickout distance. Not to forget the gun’s orientation, it should be at an angle of 45 degrees and 90 degrees for a fillet welding and a flat surface welding respectively, with the travel angle being vertical. If this simple technique is followed actively we can get a good quality MIG welding done.

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INFORMATION ABOUT ARC WELDING:

Tuesday, January 4th, 2011

One of the most common and famous type of welding is arc welding. It is nothing but joining two pieces of metals together. The basic operation of welding is that, these electric machines generate enough electricity which produces immense heat of a very high temperature, which can melt any metal. This is what exactly happens in any welding process. So in arc welding what happens is, it produces electrical power which creates an arc between an electrode and a base substance. Then, similarly like normal welding the arc produces enough heat to melt the metal, which allows to fuse two metals. Welding is a risky job, whatever be the type of welding, it involves the same amount of risk, and so having necessary precautions is always essential. Welders should wear proper safety gears for themselves while welding. Even the place where welding is done should be protected by some type of inert gas, this is called shielding. It is a must for each and every welding depot to be shielded.

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Guidelines for Submerged Arc Welding

Monday, February 15th, 2010

Submerged arc welding in short is known as (SAW). The other name for SAW welding is sub arc, welding. In this welding procedure it requires a continuously fed wire electrode and a blanket of fusible, material – commonly known as flux. The importance of using the flux is to the shield the arc and molten material. An arc is generated between the material and wire electrode, and tip being submerged in the flux.

The process of welding is similar like arc welding process. The position of welding is limited to horizontal welding position. Saw welding procedure gives high quality of submerged arc welds. Since they provide high quality of welds they seek deep penetrations and deposition rates also being higher. The process of welding is automated or semi -automated. Sub arc welding is popular among the rebuilding steel fabrication industries, and hard facing industries.

The Equipment which comes into the contact for submerged arc welding process are- source of electricity, wire drive unit or head, flux storage, nozzle (combining wire and flux in the joint) and control units. The power to be used is DC or AC power or both powers can be used on multiple electrode systems. The flux been used can be recycled and reused.

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