Archive for the ‘Gas Welding’ Category

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Electro gas welding

Wednesday, June 15th, 2011

The electro gas welding is a continuous welding process. In this process the arc is struck between the work piece and the electrode used. The arc is struck by keeping the electrode in a vertical position over the work piece. The arc that is used in this process is not extinguished like in electro slag welding. It is used throughout the welding process. With the help of this process we can make square groove welds on butt joints and t joints. This is especially useful in the shipbuilding industry. Also in the construction of storage tanks such a process is used. For a electro gas welding process, you need to have a constant voltage direct current welding power supply. This can be purchased from manufactures of welding products. If you have difficulty in locating such a supplier then you can always get in touch with such people with a simple search of the internet.

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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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Arc Welding Fumes- Importance Of Using Protective Gears!

Friday, March 25th, 2011

There are many protective gears to safeguard the welders while they are at work but it happens that a lot of us don’t care much about using the protective gears properly or sometimes get exposed to the harmful Fumes and gases let out during the process. Here are a few points to know about these fumes and gases…

During the arc welding process you will get to sense the most compounds like manganese and silicon. Apart from these the other compounds that are found in the electrode or in the base metal may also be found in the fumes.

These fumes are likely to do a lot of medical complications in a normal person’s body. Manganese is one of the elements that come out through the fumes and overexposure to this will affect the central nervous system. When the central nervous system of our body is affected it results in poor coordination, complexity in speaking in addition to shivering of arms or legs. The saddest part of this condition is that it is considered medically irreversible and hence avoiding these harmful fumes with proper usage of protective gears becomes important.

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Tig welding equipment

Friday, March 11th, 2011

Tig welding is also known as tungsten inert gas welding. In this process a non consumable electrode is used to complete the weld. This is generally meant for motorsport enthusiasts. Usually a shielding gas is used to protect the weld are from contamination from the environment. If you are look for some welding work on your automobile then you should look TIG welding process and equipment. Normally TIG welding equipment is able to weld together steel or stainless steel material. This will help to make quick repairs and modifications. This equipment should be easily able to fit in your garage. Portability is the key here. You should make sure that you have a portable wielder that runs on a 6500 watt generator. This will help in maneuvering the equipment to the work area.  Always look for something that packs a punch as welding equipment. A machine that packs out 225 amps is sure to give you a sturdy performance. Also there are pulse machines available that will help you to modulate the settings of your welding machine that will help in a better finish of the project. Look for something that has both amperage and features. This versatility will help to make your projects better every time.

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An Insight on Gas welding:

Wednesday, September 1st, 2010

In gas welding, some hazards happen from fire and explosion. Explosion or fire can happen while using gas welding due to certain reasons:

1. If welder does not handle lighted blow pipe carefully, it can cause burns to him or other workers.

2. If blowpipe is used too close to combustible material.

3. Gas leakage from hoses, valves or other equipments.

4. Misuse of oxygen.

5. Backfires and flashbacks.

Lighted blowpipes are dangerous equipment which can burn the user badly. It can also injure other people and set flammable materials on fire. By following these precautionary steps you can prevent injury

• Always work in a safe location which is away from other people.

• Before starting your work, do wear welding helmet, protective clothes and gauntlets to protect yourself from fire.

• Clamp the work piece, do not hold it by hand.

• Once your work is over, switch off the blowpipe.

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A View on Oxyacetylene Welding

Friday, May 14th, 2010

The other name for the oxyacetylene welding is gas welding. The methodology which is applied over here to perform the task of weld is by mixing up of two gas elements. Mixing up of oxygen and acetylene in an equal proportion is required in this weld type.

Along with the mixture of these two gases the other elements which come into the contact are a welding torch which is hand-held or a gas blow pipe from which a sultry flame is generated where the temperature will be around 3,200 degree Celsius. To regulate the disproportionate outpouring of oxyacetylene flames you have to then change the proportion of two gases from oxygen to acetylene. To adjust the settings of the flame you can make use of neutral, oxidizing and carburizing settings.

If the mixing ratios of both gases are equal then the weld is generally carried on neutral flame setting. In the second kind of setting, the outpour of oxidizing flame is acquired by escalating the flow rate of oxygen. And in the last type of setting, carburizing flame is acquired by escalating the flow rate of acetylene. Oxyacetylene welding procedure is best suited to weld the steel, as the amount of heat produced here is high

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Oxyacetylene Welding Overview

Wednesday, February 3rd, 2010

Oxyacetylene is also known as gas welding. The technique used is to mix two gas components namely oxygen and acetylene in an equal ratio and with the help of hand-held torch or a gas blow pipe a humid flame is produced with the temperature being around 3,200 degree Celsius. To adjust the excessive outflow of oxyacetylene flames change the volume of mixing ratio of two gases from oxygen to acetylene. The settings that are used for adjusting flame are neutral, oxidizing and carburizing.

As the ratio of mixing the gas is equal welding are generally done in neutral flame setting. In the second type of setting the outflow of oxidizing flame is obtained by increasing the flow rate of oxygen. And in the third setting carburizing flame is obtained by increasing the flow rate of acetylene.

As the amount of heat generated in Oxyacetylene welding process is high, it is best suited to weld the steel. The other gas components such as propane, hydrogen and coal gas are been used to join the lower melting points of non-ferrous metals and it can also be used for brazing and silver soldering. In this welding technique as the gas components are stored in steel cylinders at a specific pressure the equipments are friendly to handle and easy to use.

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Things to Remember While You Use Oxy/Acetylene Torch

Tuesday, December 29th, 2009
  • To check all the connections before firing the torch.
  • Don’t stand in front or behind of regulator when opening the cylinder valve.
  • Keep away your welding cylinder while you weld.
  • Turn off cylinders immediately when the torch flashes back.
  • Use a striker when you lighting a welding torch.
  • Never leave welding torch valves open.
  • Do not carry welding cylinders without the caps in place.
  • Close welding valves on empty cylinders.
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What Are The Uses Cylinder Valves, Regulators and Torch Valves?

Monday, December 28th, 2009
  • To increase the needle on the high pressure gauge, open the oxygen cylinder valve
    slowly. Adjust the oxygen pressure. Wrenches shall not be used on oxygen valves.
  • Acetylene cylinder valve shall be opened one and one quarter turns with the “T” handle wrench, which is supplied for the cylinder. This wrench shall be kept on the valve while equipment is in use. Regulate desired gas pressure, which shall never exceed 15 pounds per square inch.
  • Keep away each hose before lighting the torch.
  • Use only a friction lighter to lighting a torch.
  • Always stand to the side of regulators when opening valves.
  • Light acetylene, adjust flame, then adjust oxygen.
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